From faf8ffe678d0bcc5c951b68c916a87706de5fd4e Mon Sep 17 00:00:00 2001 From: missytake Date: Sun, 15 Oct 2023 22:54:46 +0200 Subject: [PATCH 01/22] do DKIM signing with rspamd instead of openDKIM --- cmdeploy/src/cmdeploy/__init__.py | 100 +- cmdeploy/src/cmdeploy/postfix/main.cf.j2 | 2 +- .../rspamd/dkim_signing.conf.j2 | 10 + .../src/deploy_chatmail/rspamd/redis.conf | 2276 +++++++++++++++++ 4 files changed, 2383 insertions(+), 5 deletions(-) create mode 100644 deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 create mode 100644 deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 4edb2ef..f1563d4 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -370,6 +370,86 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool: return need_restart +def remove_opendkim() -> bool: + """Remove OpenDKIM, deprecated""" + files.file( + name="Remove legacy opendkim.conf", + path="/etc/opendkim.conf", + present=False, + ) + + files.directory( + name="Remove legacy opendkim socket directory from /var/spool/postfix", + path="/var/spool/postfix/opendkim", + present=False, + ) + + apt.packages( + name="Remove openDKIM", + packages="opendkim", + present=False + ) + return False + + +def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: + """Configures rspamd for Rate Limiting.""" + need_restart = False + + dkim_directory = "/var/lib/rspamd/dkim/" + dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" + + dkim_config = files.template( + src=importlib.resources.files(__package__).joinpath("rspamd/dkim_signing.conf.j2"), + dest="/etc/rspamd/local.d/dkim_signing.conf", + user="root", + group="root", + mode="644", + config={ + "dkim_selector": str(dkim_selector), + "mail_domain": mail_domain, + "dkim_key_path": dkim_key_path, + }, + ) + need_restart |= dkim_config.changed + + files.directory( + name="ensure DKIM key directory exists", + path=dkim_directory, + present=True, + user="_rspamd", + group="_rspamd", + ) + + if not host.get_fact(File, dkim_key_path): + server.shell( + name="Generate DKIM domain keys with rspamd", + commands=[ + f"rspamadm dkim_keygen -s {dkim_selector} -d {mail_domain} -k {dkim_key_path}" + ], + _sudo=True, + _sudo_user="_rspamd", + ) + + return need_restart + + +def _configure_redis() -> bool: + """Configures redis as a key-value storage for rspamd.""" + need_restart = False + + redis_config = files.put( + src=importlib.resources.files(__package__).joinpath("rspamd/redis.conf"), + dest="/etc/redis/redis.conf", + user="redis", + group="redis", + mode="640", + ) + need_restart |= redis_config.changed + + return need_restart + + def check_config(config): mail_domain = config.mail_domain if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"): @@ -468,18 +548,30 @@ def deploy_chatmail(config_path: Path) -> None: debug = False dovecot_need_restart = _configure_dovecot(config, debug=debug) postfix_need_restart = _configure_postfix(config, debug=debug) - opendkim_need_restart = _configure_opendkim(mail_domain) mta_sts_need_restart = _install_mta_sts_daemon() nginx_need_restart = _configure_nginx(mail_domain) + remove_opendkim() + rspamd_need_restart = _configure_rspamd("dkim", mail_domain) + redis_need_restart = _configure_redis() + systemd.service( - name="Start and enable OpenDKIM", - service="opendkim.service", + name="Start and enable redis-server", + service="redis-server.service", running=True, enabled=True, - restarted=opendkim_need_restart, + restarted=redis_need_restart, ) + systemd.service( + name="Start and enable rspamd", + service="rspamd.service", + running=True, + enabled=True, + restarted=rspamd_need_restart, + ) + + systemd.service( name="Start and enable MTA-STS daemon", service="mta-sts-daemon.service", diff --git a/cmdeploy/src/cmdeploy/postfix/main.cf.j2 b/cmdeploy/src/cmdeploy/postfix/main.cf.j2 index 4a20123..aba216a 100644 --- a/cmdeploy/src/cmdeploy/postfix/main.cf.j2 +++ b/cmdeploy/src/cmdeploy/postfix/main.cf.j2 @@ -46,7 +46,7 @@ inet_protocols = all virtual_transport = lmtp:unix:private/dovecot-lmtp virtual_mailbox_domains = {{ config.mail_domain }} -smtpd_milters = unix:opendkim/opendkim.sock +smtpd_milters = inet:127.0.0.1:11332 non_smtpd_milters = $smtpd_milters header_checks = regexp:/etc/postfix/submission_header_cleanup diff --git a/deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 b/deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 new file mode 100644 index 0000000..d0c5c96 --- /dev/null +++ b/deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 @@ -0,0 +1,10 @@ +selector = {{ config.dkim_selector }} +use_esld = false # don't cut c1.testrun.org down to testrun.org +domain = { + {{ config.mail_domain }} { + selectors [ + selector = {{ config.dkim_selector }} + path = {{ config.dkim_key_path }} + ] + } +} \ No newline at end of file diff --git a/deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf b/deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf new file mode 100644 index 0000000..2e17518 --- /dev/null +++ b/deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf @@ -0,0 +1,2276 @@ +# Redis configuration file example. +# +# Note that in order to read the configuration file, Redis must be +# started with the file path as first argument: +# +# ./redis-server /path/to/redis.conf + +# Note on units: when memory size is needed, it is possible to specify +# it in the usual form of 1k 5GB 4M and so forth: +# +# 1k => 1000 bytes +# 1kb => 1024 bytes +# 1m => 1000000 bytes +# 1mb => 1024*1024 bytes +# 1g => 1000000000 bytes +# 1gb => 1024*1024*1024 bytes +# +# units are case insensitive so 1GB 1Gb 1gB are all the same. + +################################## INCLUDES ################################### + +# Include one or more other config files here. This is useful if you +# have a standard template that goes to all Redis servers but also need +# to customize a few per-server settings. Include files can include +# other files, so use this wisely. +# +# Note that option "include" won't be rewritten by command "CONFIG REWRITE" +# from admin or Redis Sentinel. Since Redis always uses the last processed +# line as value of a configuration directive, you'd better put includes +# at the beginning of this file to avoid overwriting config change at runtime. +# +# If instead you are interested in using includes to override configuration +# options, it is better to use include as the last line. +# +# Included paths may contain wildcards. All files matching the wildcards will +# be included in alphabetical order. +# Note that if an include path contains a wildcards but no files match it when +# the server is started, the include statement will be ignored and no error will +# be emitted. It is safe, therefore, to include wildcard files from empty +# directories. +# +# include /path/to/local.conf +# include /path/to/other.conf +# include /path/to/fragments/*.conf +# + +################################## MODULES ##################################### + +# Load modules at startup. If the server is not able to load modules +# it will abort. It is possible to use multiple loadmodule directives. +# +# loadmodule /path/to/my_module.so +# loadmodule /path/to/other_module.so + +################################## NETWORK ##################################### + +# By default, if no "bind" configuration directive is specified, Redis listens +# for connections from all available network interfaces on the host machine. +# It is possible to listen to just one or multiple selected interfaces using +# the "bind" configuration directive, followed by one or more IP addresses. +# Each address can be prefixed by "-", which means that redis will not fail to +# start if the address is not available. Being not available only refers to +# addresses that does not correspond to any network interface. Addresses that +# are already in use will always fail, and unsupported protocols will always BE +# silently skipped. +# +# Examples: +# +# bind 192.168.1.100 10.0.0.1 # listens on two specific IPv4 addresses +# bind 127.0.0.1 ::1 # listens on loopback IPv4 and IPv6 +# bind * -::* # like the default, all available interfaces +# +# ~~~ WARNING ~~~ If the computer running Redis is directly exposed to the +# internet, binding to all the interfaces is dangerous and will expose the +# instance to everybody on the internet. So by default we uncomment the +# following bind directive, that will force Redis to listen only on the +# IPv4 and IPv6 (if available) loopback interface addresses (this means Redis +# will only be able to accept client connections from the same host that it is +# running on). +# +# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES +# COMMENT OUT THE FOLLOWING LINE. +# +# You will also need to set a password unless you explicitly disable protected +# mode. +# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +bind 127.0.0.1 -::1 + +# By default, outgoing connections (from replica to master, from Sentinel to +# instances, cluster bus, etc.) are not bound to a specific local address. In +# most cases, this means the operating system will handle that based on routing +# and the interface through which the connection goes out. +# +# Using bind-source-addr it is possible to configure a specific address to bind +# to, which may also affect how the connection gets routed. +# +# Example: +# +# bind-source-addr 10.0.0.1 + +# Protected mode is a layer of security protection, in order to avoid that +# Redis instances left open on the internet are accessed and exploited. +# +# When protected mode is on and the default user has no password, the server +# only accepts local connections from the IPv4 address (127.0.0.1), IPv6 address +# (::1) or Unix domain sockets. +# +# By default protected mode is enabled. You should disable it only if +# you are sure you want clients from other hosts to connect to Redis +# even if no authentication is configured. +protected-mode yes + +# Redis uses default hardened security configuration directives to reduce the +# attack surface on innocent users. Therefore, several sensitive configuration +# directives are immutable, and some potentially-dangerous commands are blocked. +# +# Configuration directives that control files that Redis writes to (e.g., 'dir' +# and 'dbfilename') and that aren't usually modified during runtime +# are protected by making them immutable. +# +# Commands that can increase the attack surface of Redis and that aren't usually +# called by users are blocked by default. +# +# These can be exposed to either all connections or just local ones by setting +# each of the configs listed below to either of these values: +# +# no - Block for any connection (remain immutable) +# yes - Allow for any connection (no protection) +# local - Allow only for local connections. Ones originating from the +# IPv4 address (127.0.0.1), IPv6 address (::1) or Unix domain sockets. +# +# enable-protected-configs no +# enable-debug-command no +# enable-module-command no + +# Accept connections on the specified port, default is 6379 (IANA #815344). +# If port 0 is specified Redis will not listen on a TCP socket. +port 6379 + +# TCP listen() backlog. +# +# In high requests-per-second environments you need a high backlog in order +# to avoid slow clients connection issues. Note that the Linux kernel +# will silently truncate it to the value of /proc/sys/net/core/somaxconn so +# make sure to raise both the value of somaxconn and tcp_max_syn_backlog +# in order to get the desired effect. +tcp-backlog 511 + +# Unix socket. +# +# Specify the path for the Unix socket that will be used to listen for +# incoming connections. There is no default, so Redis will not listen +# on a unix socket when not specified. +# +# unixsocket /run/redis/redis-server.sock +# unixsocketperm 700 + +# Close the connection after a client is idle for N seconds (0 to disable) +timeout 0 + +# TCP keepalive. +# +# If non-zero, use SO_KEEPALIVE to send TCP ACKs to clients in absence +# of communication. This is useful for two reasons: +# +# 1) Detect dead peers. +# 2) Force network equipment in the middle to consider the connection to be +# alive. +# +# On Linux, the specified value (in seconds) is the period used to send ACKs. +# Note that to close the connection the double of the time is needed. +# On other kernels the period depends on the kernel configuration. +# +# A reasonable value for this option is 300 seconds, which is the new +# Redis default starting with Redis 3.2.1. +tcp-keepalive 300 + +# Apply OS-specific mechanism to mark the listening socket with the specified +# ID, to support advanced routing and filtering capabilities. +# +# On Linux, the ID represents a connection mark. +# On FreeBSD, the ID represents a socket cookie ID. +# On OpenBSD, the ID represents a route table ID. +# +# The default value is 0, which implies no marking is required. +# socket-mark-id 0 + +################################# TLS/SSL ##################################### + +# By default, TLS/SSL is disabled. To enable it, the "tls-port" configuration +# directive can be used to define TLS-listening ports. To enable TLS on the +# default port, use: +# +# port 0 +# tls-port 6379 + +# Configure a X.509 certificate and private key to use for authenticating the +# server to connected clients, masters or cluster peers. These files should be +# PEM formatted. +# +# tls-cert-file redis.crt +# tls-key-file redis.key +# +# If the key file is encrypted using a passphrase, it can be included here +# as well. +# +# tls-key-file-pass secret + +# Normally Redis uses the same certificate for both server functions (accepting +# connections) and client functions (replicating from a master, establishing +# cluster bus connections, etc.). +# +# Sometimes certificates are issued with attributes that designate them as +# client-only or server-only certificates. In that case it may be desired to use +# different certificates for incoming (server) and outgoing (client) +# connections. To do that, use the following directives: +# +# tls-client-cert-file client.crt +# tls-client-key-file client.key +# +# If the key file is encrypted using a passphrase, it can be included here +# as well. +# +# tls-client-key-file-pass secret + +# Configure a DH parameters file to enable Diffie-Hellman (DH) key exchange, +# required by older versions of OpenSSL (<3.0). Newer versions do not require +# this configuration and recommend against it. +# +# tls-dh-params-file redis.dh + +# Configure a CA certificate(s) bundle or directory to authenticate TLS/SSL +# clients and peers. Redis requires an explicit configuration of at least one +# of these, and will not implicitly use the system wide configuration. +# +# tls-ca-cert-file ca.crt +# tls-ca-cert-dir /etc/ssl/certs + +# By default, clients (including replica servers) on a TLS port are required +# to authenticate using valid client side certificates. +# +# If "no" is specified, client certificates are not required and not accepted. +# If "optional" is specified, client certificates are accepted and must be +# valid if provided, but are not required. +# +# tls-auth-clients no +# tls-auth-clients optional + +# By default, a Redis replica does not attempt to establish a TLS connection +# with its master. +# +# Use the following directive to enable TLS on replication links. +# +# tls-replication yes + +# By default, the Redis Cluster bus uses a plain TCP connection. To enable +# TLS for the bus protocol, use the following directive: +# +# tls-cluster yes + +# By default, only TLSv1.2 and TLSv1.3 are enabled and it is highly recommended +# that older formally deprecated versions are kept disabled to reduce the attack surface. +# You can explicitly specify TLS versions to support. +# Allowed values are case insensitive and include "TLSv1", "TLSv1.1", "TLSv1.2", +# "TLSv1.3" (OpenSSL >= 1.1.1) or any combination. +# To enable only TLSv1.2 and TLSv1.3, use: +# +# tls-protocols "TLSv1.2 TLSv1.3" + +# Configure allowed ciphers. See the ciphers(1ssl) manpage for more information +# about the syntax of this string. +# +# Note: this configuration applies only to <= TLSv1.2. +# +# tls-ciphers DEFAULT:!MEDIUM + +# Configure allowed TLSv1.3 ciphersuites. See the ciphers(1ssl) manpage for more +# information about the syntax of this string, and specifically for TLSv1.3 +# ciphersuites. +# +# tls-ciphersuites TLS_CHACHA20_POLY1305_SHA256 + +# When choosing a cipher, use the server's preference instead of the client +# preference. By default, the server follows the client's preference. +# +# tls-prefer-server-ciphers yes + +# By default, TLS session caching is enabled to allow faster and less expensive +# reconnections by clients that support it. Use the following directive to disable +# caching. +# +# tls-session-caching no + +# Change the default number of TLS sessions cached. A zero value sets the cache +# to unlimited size. The default size is 20480. +# +# tls-session-cache-size 5000 + +# Change the default timeout of cached TLS sessions. The default timeout is 300 +# seconds. +# +# tls-session-cache-timeout 60 + +################################# GENERAL ##################################### + +# By default Redis does not run as a daemon. Use 'yes' if you need it. +# Note that Redis will write a pid file in /var/run/redis.pid when daemonized. +# When Redis is supervised by upstart or systemd, this parameter has no impact. +daemonize yes + +# If you run Redis from upstart or systemd, Redis can interact with your +# supervision tree. Options: +# supervised no - no supervision interaction +# supervised upstart - signal upstart by putting Redis into SIGSTOP mode +# requires "expect stop" in your upstart job config +# supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET +# on startup, and updating Redis status on a regular +# basis. +# supervised auto - detect upstart or systemd method based on +# UPSTART_JOB or NOTIFY_SOCKET environment variables +# Note: these supervision methods only signal "process is ready." +# They do not enable continuous pings back to your supervisor. +# +# The default is "no". To run under upstart/systemd, you can simply uncomment +# the line below: +# +# supervised auto + +# If a pid file is specified, Redis writes it where specified at startup +# and removes it at exit. +# +# When the server runs non daemonized, no pid file is created if none is +# specified in the configuration. When the server is daemonized, the pid file +# is used even if not specified, defaulting to "/var/run/redis.pid". +# +# Creating a pid file is best effort: if Redis is not able to create it +# nothing bad happens, the server will start and run normally. +# +# Note that on modern Linux systems "/run/redis.pid" is more conforming +# and should be used instead. +pidfile /run/redis/redis-server.pid + +# Specify the server verbosity level. +# This can be one of: +# debug (a lot of information, useful for development/testing) +# verbose (many rarely useful info, but not a mess like the debug level) +# notice (moderately verbose, what you want in production probably) +# warning (only very important / critical messages are logged) +loglevel notice + +# Specify the log file name. Also the empty string can be used to force +# Redis to log on the standard output. Note that if you use standard +# output for logging but daemonize, logs will be sent to /dev/null +logfile /var/log/redis/redis-server.log + +# To enable logging to the system logger, just set 'syslog-enabled' to yes, +# and optionally update the other syslog parameters to suit your needs. +# syslog-enabled no + +# Specify the syslog identity. +# syslog-ident redis + +# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7. +# syslog-facility local0 + +# To disable the built in crash log, which will possibly produce cleaner core +# dumps when they are needed, uncomment the following: +# +# crash-log-enabled no + +# To disable the fast memory check that's run as part of the crash log, which +# will possibly let redis terminate sooner, uncomment the following: +# +# crash-memcheck-enabled no + +# Set the number of databases. The default database is DB 0, you can select +# a different one on a per-connection basis using SELECT where +# dbid is a number between 0 and 'databases'-1 +databases 16 + +# By default Redis shows an ASCII art logo only when started to log to the +# standard output and if the standard output is a TTY and syslog logging is +# disabled. Basically this means that normally a logo is displayed only in +# interactive sessions. +# +# However it is possible to force the pre-4.0 behavior and always show a +# ASCII art logo in startup logs by setting the following option to yes. +always-show-logo no + +# By default, Redis modifies the process title (as seen in 'top' and 'ps') to +# provide some runtime information. It is possible to disable this and leave +# the process name as executed by setting the following to no. +set-proc-title yes + +# When changing the process title, Redis uses the following template to construct +# the modified title. +# +# Template variables are specified in curly brackets. The following variables are +# supported: +# +# {title} Name of process as executed if parent, or type of child process. +# {listen-addr} Bind address or '*' followed by TCP or TLS port listening on, or +# Unix socket if only that's available. +# {server-mode} Special mode, i.e. "[sentinel]" or "[cluster]". +# {port} TCP port listening on, or 0. +# {tls-port} TLS port listening on, or 0. +# {unixsocket} Unix domain socket listening on, or "". +# {config-file} Name of configuration file used. +# +proc-title-template "{title} {listen-addr} {server-mode}" + +################################ SNAPSHOTTING ################################ + +# Save the DB to disk. +# +# save [ ...] +# +# Redis will save the DB if the given number of seconds elapsed and it +# surpassed the given number of write operations against the DB. +# +# Snapshotting can be completely disabled with a single empty string argument +# as in following example: +# +# save "" +# +# Unless specified otherwise, by default Redis will save the DB: +# * After 3600 seconds (an hour) if at least 1 change was performed +# * After 300 seconds (5 minutes) if at least 100 changes were performed +# * After 60 seconds if at least 10000 changes were performed +# +# You can set these explicitly by uncommenting the following line. +# +# save 3600 1 300 100 60 10000 + +# By default Redis will stop accepting writes if RDB snapshots are enabled +# (at least one save point) and the latest background save failed. +# This will make the user aware (in a hard way) that data is not persisting +# on disk properly, otherwise chances are that no one will notice and some +# disaster will happen. +# +# If the background saving process will start working again Redis will +# automatically allow writes again. +# +# However if you have setup your proper monitoring of the Redis server +# and persistence, you may want to disable this feature so that Redis will +# continue to work as usual even if there are problems with disk, +# permissions, and so forth. +stop-writes-on-bgsave-error yes + +# Compress string objects using LZF when dump .rdb databases? +# By default compression is enabled as it's almost always a win. +# If you want to save some CPU in the saving child set it to 'no' but +# the dataset will likely be bigger if you have compressible values or keys. +rdbcompression yes + +# Since version 5 of RDB a CRC64 checksum is placed at the end of the file. +# This makes the format more resistant to corruption but there is a performance +# hit to pay (around 10%) when saving and loading RDB files, so you can disable it +# for maximum performances. +# +# RDB files created with checksum disabled have a checksum of zero that will +# tell the loading code to skip the check. +rdbchecksum yes + +# Enables or disables full sanitization checks for ziplist and listpack etc when +# loading an RDB or RESTORE payload. This reduces the chances of a assertion or +# crash later on while processing commands. +# Options: +# no - Never perform full sanitization +# yes - Always perform full sanitization +# clients - Perform full sanitization only for user connections. +# Excludes: RDB files, RESTORE commands received from the master +# connection, and client connections which have the +# skip-sanitize-payload ACL flag. +# The default should be 'clients' but since it currently affects cluster +# resharding via MIGRATE, it is temporarily set to 'no' by default. +# +# sanitize-dump-payload no + +# The filename where to dump the DB +dbfilename dump.rdb + +# Remove RDB files used by replication in instances without persistence +# enabled. By default this option is disabled, however there are environments +# where for regulations or other security concerns, RDB files persisted on +# disk by masters in order to feed replicas, or stored on disk by replicas +# in order to load them for the initial synchronization, should be deleted +# ASAP. Note that this option ONLY WORKS in instances that have both AOF +# and RDB persistence disabled, otherwise is completely ignored. +# +# An alternative (and sometimes better) way to obtain the same effect is +# to use diskless replication on both master and replicas instances. However +# in the case of replicas, diskless is not always an option. +rdb-del-sync-files no + +# The working directory. +# +# The DB will be written inside this directory, with the filename specified +# above using the 'dbfilename' configuration directive. +# +# The Append Only File will also be created inside this directory. +# +# Note that you must specify a directory here, not a file name. +dir /var/lib/redis + +################################# REPLICATION ################################# + +# Master-Replica replication. Use replicaof to make a Redis instance a copy of +# another Redis server. A few things to understand ASAP about Redis replication. +# +# +------------------+ +---------------+ +# | Master | ---> | Replica | +# | (receive writes) | | (exact copy) | +# +------------------+ +---------------+ +# +# 1) Redis replication is asynchronous, but you can configure a master to +# stop accepting writes if it appears to be not connected with at least +# a given number of replicas. +# 2) Redis replicas are able to perform a partial resynchronization with the +# master if the replication link is lost for a relatively small amount of +# time. You may want to configure the replication backlog size (see the next +# sections of this file) with a sensible value depending on your needs. +# 3) Replication is automatic and does not need user intervention. After a +# network partition replicas automatically try to reconnect to masters +# and resynchronize with them. +# +# replicaof + +# If the master is password protected (using the "requirepass" configuration +# directive below) it is possible to tell the replica to authenticate before +# starting the replication synchronization process, otherwise the master will +# refuse the replica request. +# +# masterauth +# +# However this is not enough if you are using Redis ACLs (for Redis version +# 6 or greater), and the default user is not capable of running the PSYNC +# command and/or other commands needed for replication. In this case it's +# better to configure a special user to use with replication, and specify the +# masteruser configuration as such: +# +# masteruser +# +# When masteruser is specified, the replica will authenticate against its +# master using the new AUTH form: AUTH . + +# When a replica loses its connection with the master, or when the replication +# is still in progress, the replica can act in two different ways: +# +# 1) if replica-serve-stale-data is set to 'yes' (the default) the replica will +# still reply to client requests, possibly with out of date data, or the +# data set may just be empty if this is the first synchronization. +# +# 2) If replica-serve-stale-data is set to 'no' the replica will reply with error +# "MASTERDOWN Link with MASTER is down and replica-serve-stale-data is set to 'no'" +# to all data access commands, excluding commands such as: +# INFO, REPLICAOF, AUTH, SHUTDOWN, REPLCONF, ROLE, CONFIG, SUBSCRIBE, +# UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBLISH, PUBSUB, COMMAND, POST, +# HOST and LATENCY. +# +replica-serve-stale-data yes + +# You can configure a replica instance to accept writes or not. Writing against +# a replica instance may be useful to store some ephemeral data (because data +# written on a replica will be easily deleted after resync with the master) but +# may also cause problems if clients are writing to it because of a +# misconfiguration. +# +# Since Redis 2.6 by default replicas are read-only. +# +# Note: read only replicas are not designed to be exposed to untrusted clients +# on the internet. It's just a protection layer against misuse of the instance. +# Still a read only replica exports by default all the administrative commands +# such as CONFIG, DEBUG, and so forth. To a limited extent you can improve +# security of read only replicas using 'rename-command' to shadow all the +# administrative / dangerous commands. +replica-read-only yes + +# Replication SYNC strategy: disk or socket. +# +# New replicas and reconnecting replicas that are not able to continue the +# replication process just receiving differences, need to do what is called a +# "full synchronization". An RDB file is transmitted from the master to the +# replicas. +# +# The transmission can happen in two different ways: +# +# 1) Disk-backed: The Redis master creates a new process that writes the RDB +# file on disk. Later the file is transferred by the parent +# process to the replicas incrementally. +# 2) Diskless: The Redis master creates a new process that directly writes the +# RDB file to replica sockets, without touching the disk at all. +# +# With disk-backed replication, while the RDB file is generated, more replicas +# can be queued and served with the RDB file as soon as the current child +# producing the RDB file finishes its work. With diskless replication instead +# once the transfer starts, new replicas arriving will be queued and a new +# transfer will start when the current one terminates. +# +# When diskless replication is used, the master waits a configurable amount of +# time (in seconds) before starting the transfer in the hope that multiple +# replicas will arrive and the transfer can be parallelized. +# +# With slow disks and fast (large bandwidth) networks, diskless replication +# works better. +repl-diskless-sync yes + +# When diskless replication is enabled, it is possible to configure the delay +# the server waits in order to spawn the child that transfers the RDB via socket +# to the replicas. +# +# This is important since once the transfer starts, it is not possible to serve +# new replicas arriving, that will be queued for the next RDB transfer, so the +# server waits a delay in order to let more replicas arrive. +# +# The delay is specified in seconds, and by default is 5 seconds. To disable +# it entirely just set it to 0 seconds and the transfer will start ASAP. +repl-diskless-sync-delay 5 + +# When diskless replication is enabled with a delay, it is possible to let +# the replication start before the maximum delay is reached if the maximum +# number of replicas expected have connected. Default of 0 means that the +# maximum is not defined and Redis will wait the full delay. +repl-diskless-sync-max-replicas 0 + +# ----------------------------------------------------------------------------- +# WARNING: RDB diskless load is experimental. Since in this setup the replica +# does not immediately store an RDB on disk, it may cause data loss during +# failovers. RDB diskless load + Redis modules not handling I/O reads may also +# cause Redis to abort in case of I/O errors during the initial synchronization +# stage with the master. Use only if you know what you are doing. +# ----------------------------------------------------------------------------- +# +# Replica can load the RDB it reads from the replication link directly from the +# socket, or store the RDB to a file and read that file after it was completely +# received from the master. +# +# In many cases the disk is slower than the network, and storing and loading +# the RDB file may increase replication time (and even increase the master's +# Copy on Write memory and replica buffers). +# However, parsing the RDB file directly from the socket may mean that we have +# to flush the contents of the current database before the full rdb was +# received. For this reason we have the following options: +# +# "disabled" - Don't use diskless load (store the rdb file to the disk first) +# "on-empty-db" - Use diskless load only when it is completely safe. +# "swapdb" - Keep current db contents in RAM while parsing the data directly +# from the socket. Replicas in this mode can keep serving current +# data set while replication is in progress, except for cases where +# they can't recognize master as having a data set from same +# replication history. +# Note that this requires sufficient memory, if you don't have it, +# you risk an OOM kill. +repl-diskless-load disabled + +# Master send PINGs to its replicas in a predefined interval. It's possible to +# change this interval with the repl_ping_replica_period option. The default +# value is 10 seconds. +# +# repl-ping-replica-period 10 + +# The following option sets the replication timeout for: +# +# 1) Bulk transfer I/O during SYNC, from the point of view of replica. +# 2) Master timeout from the point of view of replicas (data, pings). +# 3) Replica timeout from the point of view of masters (REPLCONF ACK pings). +# +# It is important to make sure that this value is greater than the value +# specified for repl-ping-replica-period otherwise a timeout will be detected +# every time there is low traffic between the master and the replica. The default +# value is 60 seconds. +# +# repl-timeout 60 + +# Disable TCP_NODELAY on the replica socket after SYNC? +# +# If you select "yes" Redis will use a smaller number of TCP packets and +# less bandwidth to send data to replicas. But this can add a delay for +# the data to appear on the replica side, up to 40 milliseconds with +# Linux kernels using a default configuration. +# +# If you select "no" the delay for data to appear on the replica side will +# be reduced but more bandwidth will be used for replication. +# +# By default we optimize for low latency, but in very high traffic conditions +# or when the master and replicas are many hops away, turning this to "yes" may +# be a good idea. +repl-disable-tcp-nodelay no + +# Set the replication backlog size. The backlog is a buffer that accumulates +# replica data when replicas are disconnected for some time, so that when a +# replica wants to reconnect again, often a full resync is not needed, but a +# partial resync is enough, just passing the portion of data the replica +# missed while disconnected. +# +# The bigger the replication backlog, the longer the replica can endure the +# disconnect and later be able to perform a partial resynchronization. +# +# The backlog is only allocated if there is at least one replica connected. +# +# repl-backlog-size 1mb + +# After a master has no connected replicas for some time, the backlog will be +# freed. The following option configures the amount of seconds that need to +# elapse, starting from the time the last replica disconnected, for the backlog +# buffer to be freed. +# +# Note that replicas never free the backlog for timeout, since they may be +# promoted to masters later, and should be able to correctly "partially +# resynchronize" with other replicas: hence they should always accumulate backlog. +# +# A value of 0 means to never release the backlog. +# +# repl-backlog-ttl 3600 + +# The replica priority is an integer number published by Redis in the INFO +# output. It is used by Redis Sentinel in order to select a replica to promote +# into a master if the master is no longer working correctly. +# +# A replica with a low priority number is considered better for promotion, so +# for instance if there are three replicas with priority 10, 100, 25 Sentinel +# will pick the one with priority 10, that is the lowest. +# +# However a special priority of 0 marks the replica as not able to perform the +# role of master, so a replica with priority of 0 will never be selected by +# Redis Sentinel for promotion. +# +# By default the priority is 100. +replica-priority 100 + +# The propagation error behavior controls how Redis will behave when it is +# unable to handle a command being processed in the replication stream from a master +# or processed while reading from an AOF file. Errors that occur during propagation +# are unexpected, and can cause data inconsistency. However, there are edge cases +# in earlier versions of Redis where it was possible for the server to replicate or persist +# commands that would fail on future versions. For this reason the default behavior +# is to ignore such errors and continue processing commands. +# +# If an application wants to ensure there is no data divergence, this configuration +# should be set to 'panic' instead. The value can also be set to 'panic-on-replicas' +# to only panic when a replica encounters an error on the replication stream. One of +# these two panic values will become the default value in the future once there are +# sufficient safety mechanisms in place to prevent false positive crashes. +# +# propagation-error-behavior ignore + +# Replica ignore disk write errors controls the behavior of a replica when it is +# unable to persist a write command received from its master to disk. By default, +# this configuration is set to 'no' and will crash the replica in this condition. +# It is not recommended to change this default, however in order to be compatible +# with older versions of Redis this config can be toggled to 'yes' which will just +# log a warning and execute the write command it got from the master. +# +# replica-ignore-disk-write-errors no + +# ----------------------------------------------------------------------------- +# By default, Redis Sentinel includes all replicas in its reports. A replica +# can be excluded from Redis Sentinel's announcements. An unannounced replica +# will be ignored by the 'sentinel replicas ' command and won't be +# exposed to Redis Sentinel's clients. +# +# This option does not change the behavior of replica-priority. Even with +# replica-announced set to 'no', the replica can be promoted to master. To +# prevent this behavior, set replica-priority to 0. +# +# replica-announced yes + +# It is possible for a master to stop accepting writes if there are less than +# N replicas connected, having a lag less or equal than M seconds. +# +# The N replicas need to be in "online" state. +# +# The lag in seconds, that must be <= the specified value, is calculated from +# the last ping received from the replica, that is usually sent every second. +# +# This option does not GUARANTEE that N replicas will accept the write, but +# will limit the window of exposure for lost writes in case not enough replicas +# are available, to the specified number of seconds. +# +# For example to require at least 3 replicas with a lag <= 10 seconds use: +# +# min-replicas-to-write 3 +# min-replicas-max-lag 10 +# +# Setting one or the other to 0 disables the feature. +# +# By default min-replicas-to-write is set to 0 (feature disabled) and +# min-replicas-max-lag is set to 10. + +# A Redis master is able to list the address and port of the attached +# replicas in different ways. For example the "INFO replication" section +# offers this information, which is used, among other tools, by +# Redis Sentinel in order to discover replica instances. +# Another place where this info is available is in the output of the +# "ROLE" command of a master. +# +# The listed IP address and port normally reported by a replica is +# obtained in the following way: +# +# IP: The address is auto detected by checking the peer address +# of the socket used by the replica to connect with the master. +# +# Port: The port is communicated by the replica during the replication +# handshake, and is normally the port that the replica is using to +# listen for connections. +# +# However when port forwarding or Network Address Translation (NAT) is +# used, the replica may actually be reachable via different IP and port +# pairs. The following two options can be used by a replica in order to +# report to its master a specific set of IP and port, so that both INFO +# and ROLE will report those values. +# +# There is no need to use both the options if you need to override just +# the port or the IP address. +# +# replica-announce-ip 5.5.5.5 +# replica-announce-port 1234 + +############################### KEYS TRACKING ################################# + +# Redis implements server assisted support for client side caching of values. +# This is implemented using an invalidation table that remembers, using +# a radix key indexed by key name, what clients have which keys. In turn +# this is used in order to send invalidation messages to clients. Please +# check this page to understand more about the feature: +# +# https://redis.io/topics/client-side-caching +# +# When tracking is enabled for a client, all the read only queries are assumed +# to be cached: this will force Redis to store information in the invalidation +# table. When keys are modified, such information is flushed away, and +# invalidation messages are sent to the clients. However if the workload is +# heavily dominated by reads, Redis could use more and more memory in order +# to track the keys fetched by many clients. +# +# For this reason it is possible to configure a maximum fill value for the +# invalidation table. By default it is set to 1M of keys, and once this limit +# is reached, Redis will start to evict keys in the invalidation table +# even if they were not modified, just to reclaim memory: this will in turn +# force the clients to invalidate the cached values. Basically the table +# maximum size is a trade off between the memory you want to spend server +# side to track information about who cached what, and the ability of clients +# to retain cached objects in memory. +# +# If you set the value to 0, it means there are no limits, and Redis will +# retain as many keys as needed in the invalidation table. +# In the "stats" INFO section, you can find information about the number of +# keys in the invalidation table at every given moment. +# +# Note: when key tracking is used in broadcasting mode, no memory is used +# in the server side so this setting is useless. +# +# tracking-table-max-keys 1000000 + +################################## SECURITY ################################### + +# Warning: since Redis is pretty fast, an outside user can try up to +# 1 million passwords per second against a modern box. This means that you +# should use very strong passwords, otherwise they will be very easy to break. +# Note that because the password is really a shared secret between the client +# and the server, and should not be memorized by any human, the password +# can be easily a long string from /dev/urandom or whatever, so by using a +# long and unguessable password no brute force attack will be possible. + +# Redis ACL users are defined in the following format: +# +# user ... acl rules ... +# +# For example: +# +# user worker +@list +@connection ~jobs:* on >ffa9203c493aa99 +# +# The special username "default" is used for new connections. If this user +# has the "nopass" rule, then new connections will be immediately authenticated +# as the "default" user without the need of any password provided via the +# AUTH command. Otherwise if the "default" user is not flagged with "nopass" +# the connections will start in not authenticated state, and will require +# AUTH (or the HELLO command AUTH option) in order to be authenticated and +# start to work. +# +# The ACL rules that describe what a user can do are the following: +# +# on Enable the user: it is possible to authenticate as this user. +# off Disable the user: it's no longer possible to authenticate +# with this user, however the already authenticated connections +# will still work. +# skip-sanitize-payload RESTORE dump-payload sanitization is skipped. +# sanitize-payload RESTORE dump-payload is sanitized (default). +# + Allow the execution of that command. +# May be used with `|` for allowing subcommands (e.g "+config|get") +# - Disallow the execution of that command. +# May be used with `|` for blocking subcommands (e.g "-config|set") +# +@ Allow the execution of all the commands in such category +# with valid categories are like @admin, @set, @sortedset, ... +# and so forth, see the full list in the server.c file where +# the Redis command table is described and defined. +# The special category @all means all the commands, but currently +# present in the server, and that will be loaded in the future +# via modules. +# +|first-arg Allow a specific first argument of an otherwise +# disabled command. It is only supported on commands with +# no sub-commands, and is not allowed as negative form +# like -SELECT|1, only additive starting with "+". This +# feature is deprecated and may be removed in the future. +# allcommands Alias for +@all. Note that it implies the ability to execute +# all the future commands loaded via the modules system. +# nocommands Alias for -@all. +# ~ Add a pattern of keys that can be mentioned as part of +# commands. For instance ~* allows all the keys. The pattern +# is a glob-style pattern like the one of KEYS. +# It is possible to specify multiple patterns. +# %R~ Add key read pattern that specifies which keys can be read +# from. +# %W~ Add key write pattern that specifies which keys can be +# written to. +# allkeys Alias for ~* +# resetkeys Flush the list of allowed keys patterns. +# & Add a glob-style pattern of Pub/Sub channels that can be +# accessed by the user. It is possible to specify multiple channel +# patterns. +# allchannels Alias for &* +# resetchannels Flush the list of allowed channel patterns. +# > Add this password to the list of valid password for the user. +# For example >mypass will add "mypass" to the list. +# This directive clears the "nopass" flag (see later). +# < Remove this password from the list of valid passwords. +# nopass All the set passwords of the user are removed, and the user +# is flagged as requiring no password: it means that every +# password will work against this user. If this directive is +# used for the default user, every new connection will be +# immediately authenticated with the default user without +# any explicit AUTH command required. Note that the "resetpass" +# directive will clear this condition. +# resetpass Flush the list of allowed passwords. Moreover removes the +# "nopass" status. After "resetpass" the user has no associated +# passwords and there is no way to authenticate without adding +# some password (or setting it as "nopass" later). +# reset Performs the following actions: resetpass, resetkeys, off, +# -@all. The user returns to the same state it has immediately +# after its creation. +# () Create a new selector with the options specified within the +# parentheses and attach it to the user. Each option should be +# space separated. The first character must be ( and the last +# character must be ). +# clearselectors Remove all of the currently attached selectors. +# Note this does not change the "root" user permissions, +# which are the permissions directly applied onto the +# user (outside the parentheses). +# +# ACL rules can be specified in any order: for instance you can start with +# passwords, then flags, or key patterns. However note that the additive +# and subtractive rules will CHANGE MEANING depending on the ordering. +# For instance see the following example: +# +# user alice on +@all -DEBUG ~* >somepassword +# +# This will allow "alice" to use all the commands with the exception of the +# DEBUG command, since +@all added all the commands to the set of the commands +# alice can use, and later DEBUG was removed. However if we invert the order +# of two ACL rules the result will be different: +# +# user alice on -DEBUG +@all ~* >somepassword +# +# Now DEBUG was removed when alice had yet no commands in the set of allowed +# commands, later all the commands are added, so the user will be able to +# execute everything. +# +# Basically ACL rules are processed left-to-right. +# +# The following is a list of command categories and their meanings: +# * keyspace - Writing or reading from keys, databases, or their metadata +# in a type agnostic way. Includes DEL, RESTORE, DUMP, RENAME, EXISTS, DBSIZE, +# KEYS, EXPIRE, TTL, FLUSHALL, etc. Commands that may modify the keyspace, +# key or metadata will also have `write` category. Commands that only read +# the keyspace, key or metadata will have the `read` category. +# * read - Reading from keys (values or metadata). Note that commands that don't +# interact with keys, will not have either `read` or `write`. +# * write - Writing to keys (values or metadata) +# * admin - Administrative commands. Normal applications will never need to use +# these. Includes REPLICAOF, CONFIG, DEBUG, SAVE, MONITOR, ACL, SHUTDOWN, etc. +# * dangerous - Potentially dangerous (each should be considered with care for +# various reasons). This includes FLUSHALL, MIGRATE, RESTORE, SORT, KEYS, +# CLIENT, DEBUG, INFO, CONFIG, SAVE, REPLICAOF, etc. +# * connection - Commands affecting the connection or other connections. +# This includes AUTH, SELECT, COMMAND, CLIENT, ECHO, PING, etc. +# * blocking - Potentially blocking the connection until released by another +# command. +# * fast - Fast O(1) commands. May loop on the number of arguments, but not the +# number of elements in the key. +# * slow - All commands that are not Fast. +# * pubsub - PUBLISH / SUBSCRIBE related +# * transaction - WATCH / MULTI / EXEC related commands. +# * scripting - Scripting related. +# * set - Data type: sets related. +# * sortedset - Data type: zsets related. +# * list - Data type: lists related. +# * hash - Data type: hashes related. +# * string - Data type: strings related. +# * bitmap - Data type: bitmaps related. +# * hyperloglog - Data type: hyperloglog related. +# * geo - Data type: geo related. +# * stream - Data type: streams related. +# +# For more information about ACL configuration please refer to +# the Redis web site at https://redis.io/topics/acl + +# ACL LOG +# +# The ACL Log tracks failed commands and authentication events associated +# with ACLs. The ACL Log is useful to troubleshoot failed commands blocked +# by ACLs. The ACL Log is stored in memory. You can reclaim memory with +# ACL LOG RESET. Define the maximum entry length of the ACL Log below. +acllog-max-len 128 + +# Using an external ACL file +# +# Instead of configuring users here in this file, it is possible to use +# a stand-alone file just listing users. The two methods cannot be mixed: +# if you configure users here and at the same time you activate the external +# ACL file, the server will refuse to start. +# +# The format of the external ACL user file is exactly the same as the +# format that is used inside redis.conf to describe users. +# +# aclfile /etc/redis/users.acl + +# IMPORTANT NOTE: starting with Redis 6 "requirepass" is just a compatibility +# layer on top of the new ACL system. The option effect will be just setting +# the password for the default user. Clients will still authenticate using +# AUTH as usually, or more explicitly with AUTH default +# if they follow the new protocol: both will work. +# +# The requirepass is not compatible with aclfile option and the ACL LOAD +# command, these will cause requirepass to be ignored. +# +# requirepass foobared + +# New users are initialized with restrictive permissions by default, via the +# equivalent of this ACL rule 'off resetkeys -@all'. Starting with Redis 6.2, it +# is possible to manage access to Pub/Sub channels with ACL rules as well. The +# default Pub/Sub channels permission if new users is controlled by the +# acl-pubsub-default configuration directive, which accepts one of these values: +# +# allchannels: grants access to all Pub/Sub channels +# resetchannels: revokes access to all Pub/Sub channels +# +# From Redis 7.0, acl-pubsub-default defaults to 'resetchannels' permission. +# +# acl-pubsub-default resetchannels + +# Command renaming (DEPRECATED). +# +# ------------------------------------------------------------------------ +# WARNING: avoid using this option if possible. Instead use ACLs to remove +# commands from the default user, and put them only in some admin user you +# create for administrative purposes. +# ------------------------------------------------------------------------ +# +# It is possible to change the name of dangerous commands in a shared +# environment. For instance the CONFIG command may be renamed into something +# hard to guess so that it will still be available for internal-use tools +# but not available for general clients. +# +# Example: +# +# rename-command CONFIG b840fc02d524045429941cc15f59e41cb7be6c52 +# +# It is also possible to completely kill a command by renaming it into +# an empty string: +# +# rename-command CONFIG "" +# +# Please note that changing the name of commands that are logged into the +# AOF file or transmitted to replicas may cause problems. + +################################### CLIENTS #################################### + +# Set the max number of connected clients at the same time. By default +# this limit is set to 10000 clients, however if the Redis server is not +# able to configure the process file limit to allow for the specified limit +# the max number of allowed clients is set to the current file limit +# minus 32 (as Redis reserves a few file descriptors for internal uses). +# +# Once the limit is reached Redis will close all the new connections sending +# an error 'max number of clients reached'. +# +# IMPORTANT: When Redis Cluster is used, the max number of connections is also +# shared with the cluster bus: every node in the cluster will use two +# connections, one incoming and another outgoing. It is important to size the +# limit accordingly in case of very large clusters. +# +# maxclients 10000 + +############################## MEMORY MANAGEMENT ################################ + +# Set a memory usage limit to the specified amount of bytes. +# When the memory limit is reached Redis will try to remove keys +# according to the eviction policy selected (see maxmemory-policy). +# +# If Redis can't remove keys according to the policy, or if the policy is +# set to 'noeviction', Redis will start to reply with errors to commands +# that would use more memory, like SET, LPUSH, and so on, and will continue +# to reply to read-only commands like GET. +# +# This option is usually useful when using Redis as an LRU or LFU cache, or to +# set a hard memory limit for an instance (using the 'noeviction' policy). +# +# WARNING: If you have replicas attached to an instance with maxmemory on, +# the size of the output buffers needed to feed the replicas are subtracted +# from the used memory count, so that network problems / resyncs will +# not trigger a loop where keys are evicted, and in turn the output +# buffer of replicas is full with DELs of keys evicted triggering the deletion +# of more keys, and so forth until the database is completely emptied. +# +# In short... if you have replicas attached it is suggested that you set a lower +# limit for maxmemory so that there is some free RAM on the system for replica +# output buffers (but this is not needed if the policy is 'noeviction'). +# +maxmemory 200mb + +# MAXMEMORY POLICY: how Redis will select what to remove when maxmemory +# is reached. You can select one from the following behaviors: +# +# volatile-lru -> Evict using approximated LRU, only keys with an expire set. +# allkeys-lru -> Evict any key using approximated LRU. +# volatile-lfu -> Evict using approximated LFU, only keys with an expire set. +# allkeys-lfu -> Evict any key using approximated LFU. +# volatile-random -> Remove a random key having an expire set. +# allkeys-random -> Remove a random key, any key. +# volatile-ttl -> Remove the key with the nearest expire time (minor TTL) +# noeviction -> Don't evict anything, just return an error on write operations. +# +# LRU means Least Recently Used +# LFU means Least Frequently Used +# +# Both LRU, LFU and volatile-ttl are implemented using approximated +# randomized algorithms. +# +# Note: with any of the above policies, when there are no suitable keys for +# eviction, Redis will return an error on write operations that require +# more memory. These are usually commands that create new keys, add data or +# modify existing keys. A few examples are: SET, INCR, HSET, LPUSH, SUNIONSTORE, +# SORT (due to the STORE argument), and EXEC (if the transaction includes any +# command that requires memory). +# +# The default is: +# +# maxmemory-policy noeviction + +# LRU, LFU and minimal TTL algorithms are not precise algorithms but approximated +# algorithms (in order to save memory), so you can tune it for speed or +# accuracy. By default Redis will check five keys and pick the one that was +# used least recently, you can change the sample size using the following +# configuration directive. +# +# The default of 5 produces good enough results. 10 Approximates very closely +# true LRU but costs more CPU. 3 is faster but not very accurate. +# +# maxmemory-samples 5 + +# Eviction processing is designed to function well with the default setting. +# If there is an unusually large amount of write traffic, this value may need to +# be increased. Decreasing this value may reduce latency at the risk of +# eviction processing effectiveness +# 0 = minimum latency, 10 = default, 100 = process without regard to latency +# +# maxmemory-eviction-tenacity 10 + +# Starting from Redis 5, by default a replica will ignore its maxmemory setting +# (unless it is promoted to master after a failover or manually). It means +# that the eviction of keys will be just handled by the master, sending the +# DEL commands to the replica as keys evict in the master side. +# +# This behavior ensures that masters and replicas stay consistent, and is usually +# what you want, however if your replica is writable, or you want the replica +# to have a different memory setting, and you are sure all the writes performed +# to the replica are idempotent, then you may change this default (but be sure +# to understand what you are doing). +# +# Note that since the replica by default does not evict, it may end using more +# memory than the one set via maxmemory (there are certain buffers that may +# be larger on the replica, or data structures may sometimes take more memory +# and so forth). So make sure you monitor your replicas and make sure they +# have enough memory to never hit a real out-of-memory condition before the +# master hits the configured maxmemory setting. +# +# replica-ignore-maxmemory yes + +# Redis reclaims expired keys in two ways: upon access when those keys are +# found to be expired, and also in background, in what is called the +# "active expire key". The key space is slowly and interactively scanned +# looking for expired keys to reclaim, so that it is possible to free memory +# of keys that are expired and will never be accessed again in a short time. +# +# The default effort of the expire cycle will try to avoid having more than +# ten percent of expired keys still in memory, and will try to avoid consuming +# more than 25% of total memory and to add latency to the system. However +# it is possible to increase the expire "effort" that is normally set to +# "1", to a greater value, up to the value "10". At its maximum value the +# system will use more CPU, longer cycles (and technically may introduce +# more latency), and will tolerate less already expired keys still present +# in the system. It's a tradeoff between memory, CPU and latency. +# +# active-expire-effort 1 + +############################# LAZY FREEING #################################### + +# Redis has two primitives to delete keys. One is called DEL and is a blocking +# deletion of the object. It means that the server stops processing new commands +# in order to reclaim all the memory associated with an object in a synchronous +# way. If the key deleted is associated with a small object, the time needed +# in order to execute the DEL command is very small and comparable to most other +# O(1) or O(log_N) commands in Redis. However if the key is associated with an +# aggregated value containing millions of elements, the server can block for +# a long time (even seconds) in order to complete the operation. +# +# For the above reasons Redis also offers non blocking deletion primitives +# such as UNLINK (non blocking DEL) and the ASYNC option of FLUSHALL and +# FLUSHDB commands, in order to reclaim memory in background. Those commands +# are executed in constant time. Another thread will incrementally free the +# object in the background as fast as possible. +# +# DEL, UNLINK and ASYNC option of FLUSHALL and FLUSHDB are user-controlled. +# It's up to the design of the application to understand when it is a good +# idea to use one or the other. However the Redis server sometimes has to +# delete keys or flush the whole database as a side effect of other operations. +# Specifically Redis deletes objects independently of a user call in the +# following scenarios: +# +# 1) On eviction, because of the maxmemory and maxmemory policy configurations, +# in order to make room for new data, without going over the specified +# memory limit. +# 2) Because of expire: when a key with an associated time to live (see the +# EXPIRE command) must be deleted from memory. +# 3) Because of a side effect of a command that stores data on a key that may +# already exist. For example the RENAME command may delete the old key +# content when it is replaced with another one. Similarly SUNIONSTORE +# or SORT with STORE option may delete existing keys. The SET command +# itself removes any old content of the specified key in order to replace +# it with the specified string. +# 4) During replication, when a replica performs a full resynchronization with +# its master, the content of the whole database is removed in order to +# load the RDB file just transferred. +# +# In all the above cases the default is to delete objects in a blocking way, +# like if DEL was called. However you can configure each case specifically +# in order to instead release memory in a non-blocking way like if UNLINK +# was called, using the following configuration directives. + +lazyfree-lazy-eviction no +lazyfree-lazy-expire no +lazyfree-lazy-server-del no +replica-lazy-flush no + +# It is also possible, for the case when to replace the user code DEL calls +# with UNLINK calls is not easy, to modify the default behavior of the DEL +# command to act exactly like UNLINK, using the following configuration +# directive: + +lazyfree-lazy-user-del no + +# FLUSHDB, FLUSHALL, SCRIPT FLUSH and FUNCTION FLUSH support both asynchronous and synchronous +# deletion, which can be controlled by passing the [SYNC|ASYNC] flags into the +# commands. When neither flag is passed, this directive will be used to determine +# if the data should be deleted asynchronously. + +lazyfree-lazy-user-flush no + +################################ THREADED I/O ################################# + +# Redis is mostly single threaded, however there are certain threaded +# operations such as UNLINK, slow I/O accesses and other things that are +# performed on side threads. +# +# Now it is also possible to handle Redis clients socket reads and writes +# in different I/O threads. Since especially writing is so slow, normally +# Redis users use pipelining in order to speed up the Redis performances per +# core, and spawn multiple instances in order to scale more. Using I/O +# threads it is possible to easily speedup two times Redis without resorting +# to pipelining nor sharding of the instance. +# +# By default threading is disabled, we suggest enabling it only in machines +# that have at least 4 or more cores, leaving at least one spare core. +# Using more than 8 threads is unlikely to help much. We also recommend using +# threaded I/O only if you actually have performance problems, with Redis +# instances being able to use a quite big percentage of CPU time, otherwise +# there is no point in using this feature. +# +# So for instance if you have a four cores boxes, try to use 2 or 3 I/O +# threads, if you have a 8 cores, try to use 6 threads. In order to +# enable I/O threads use the following configuration directive: +# +# io-threads 4 +# +# Setting io-threads to 1 will just use the main thread as usual. +# When I/O threads are enabled, we only use threads for writes, that is +# to thread the write(2) syscall and transfer the client buffers to the +# socket. However it is also possible to enable threading of reads and +# protocol parsing using the following configuration directive, by setting +# it to yes: +# +# io-threads-do-reads no +# +# Usually threading reads doesn't help much. +# +# NOTE 1: This configuration directive cannot be changed at runtime via +# CONFIG SET. Also, this feature currently does not work when SSL is +# enabled. +# +# NOTE 2: If you want to test the Redis speedup using redis-benchmark, make +# sure you also run the benchmark itself in threaded mode, using the +# --threads option to match the number of Redis threads, otherwise you'll not +# be able to notice the improvements. + +############################ KERNEL OOM CONTROL ############################## + +# On Linux, it is possible to hint the kernel OOM killer on what processes +# should be killed first when out of memory. +# +# Enabling this feature makes Redis actively control the oom_score_adj value +# for all its processes, depending on their role. The default scores will +# attempt to have background child processes killed before all others, and +# replicas killed before masters. +# +# Redis supports these options: +# +# no: Don't make changes to oom-score-adj (default). +# yes: Alias to "relative" see below. +# absolute: Values in oom-score-adj-values are written as is to the kernel. +# relative: Values are used relative to the initial value of oom_score_adj when +# the server starts and are then clamped to a range of -1000 to 1000. +# Because typically the initial value is 0, they will often match the +# absolute values. +oom-score-adj no + +# When oom-score-adj is used, this directive controls the specific values used +# for master, replica and background child processes. Values range -2000 to +# 2000 (higher means more likely to be killed). +# +# Unprivileged processes (not root, and without CAP_SYS_RESOURCE capabilities) +# can freely increase their value, but not decrease it below its initial +# settings. This means that setting oom-score-adj to "relative" and setting the +# oom-score-adj-values to positive values will always succeed. +oom-score-adj-values 0 200 800 + + +#################### KERNEL transparent hugepage CONTROL ###################### + +# Usually the kernel Transparent Huge Pages control is set to "madvise" or +# or "never" by default (/sys/kernel/mm/transparent_hugepage/enabled), in which +# case this config has no effect. On systems in which it is set to "always", +# redis will attempt to disable it specifically for the redis process in order +# to avoid latency problems specifically with fork(2) and CoW. +# If for some reason you prefer to keep it enabled, you can set this config to +# "no" and the kernel global to "always". + +disable-thp yes + +############################## APPEND ONLY MODE ############################### + +# By default Redis asynchronously dumps the dataset on disk. This mode is +# good enough in many applications, but an issue with the Redis process or +# a power outage may result into a few minutes of writes lost (depending on +# the configured save points). +# +# The Append Only File is an alternative persistence mode that provides +# much better durability. For instance using the default data fsync policy +# (see later in the config file) Redis can lose just one second of writes in a +# dramatic event like a server power outage, or a single write if something +# wrong with the Redis process itself happens, but the operating system is +# still running correctly. +# +# AOF and RDB persistence can be enabled at the same time without problems. +# If the AOF is enabled on startup Redis will load the AOF, that is the file +# with the better durability guarantees. +# +# Please check https://redis.io/topics/persistence for more information. + +appendonly no + +# The base name of the append only file. +# +# Redis 7 and newer use a set of append-only files to persist the dataset +# and changes applied to it. There are two basic types of files in use: +# +# - Base files, which are a snapshot representing the complete state of the +# dataset at the time the file was created. Base files can be either in +# the form of RDB (binary serialized) or AOF (textual commands). +# - Incremental files, which contain additional commands that were applied +# to the dataset following the previous file. +# +# In addition, manifest files are used to track the files and the order in +# which they were created and should be applied. +# +# Append-only file names are created by Redis following a specific pattern. +# The file name's prefix is based on the 'appendfilename' configuration +# parameter, followed by additional information about the sequence and type. +# +# For example, if appendfilename is set to appendonly.aof, the following file +# names could be derived: +# +# - appendonly.aof.1.base.rdb as a base file. +# - appendonly.aof.1.incr.aof, appendonly.aof.2.incr.aof as incremental files. +# - appendonly.aof.manifest as a manifest file. + +appendfilename "appendonly.aof" + +# For convenience, Redis stores all persistent append-only files in a dedicated +# directory. The name of the directory is determined by the appenddirname +# configuration parameter. + +appenddirname "appendonlydir" + +# The fsync() call tells the Operating System to actually write data on disk +# instead of waiting for more data in the output buffer. Some OS will really flush +# data on disk, some other OS will just try to do it ASAP. +# +# Redis supports three different modes: +# +# no: don't fsync, just let the OS flush the data when it wants. Faster. +# always: fsync after every write to the append only log. Slow, Safest. +# everysec: fsync only one time every second. Compromise. +# +# The default is "everysec", as that's usually the right compromise between +# speed and data safety. It's up to you to understand if you can relax this to +# "no" that will let the operating system flush the output buffer when +# it wants, for better performances (but if you can live with the idea of +# some data loss consider the default persistence mode that's snapshotting), +# or on the contrary, use "always" that's very slow but a bit safer than +# everysec. +# +# More details please check the following article: +# http://antirez.com/post/redis-persistence-demystified.html +# +# If unsure, use "everysec". + +# appendfsync always +appendfsync everysec +# appendfsync no + +# When the AOF fsync policy is set to always or everysec, and a background +# saving process (a background save or AOF log background rewriting) is +# performing a lot of I/O against the disk, in some Linux configurations +# Redis may block too long on the fsync() call. Note that there is no fix for +# this currently, as even performing fsync in a different thread will block +# our synchronous write(2) call. +# +# In order to mitigate this problem it's possible to use the following option +# that will prevent fsync() from being called in the main process while a +# BGSAVE or BGREWRITEAOF is in progress. +# +# This means that while another child is saving, the durability of Redis is +# the same as "appendfsync no". In practical terms, this means that it is +# possible to lose up to 30 seconds of log in the worst scenario (with the +# default Linux settings). +# +# If you have latency problems turn this to "yes". Otherwise leave it as +# "no" that is the safest pick from the point of view of durability. + +no-appendfsync-on-rewrite no + +# Automatic rewrite of the append only file. +# Redis is able to automatically rewrite the log file implicitly calling +# BGREWRITEAOF when the AOF log size grows by the specified percentage. +# +# This is how it works: Redis remembers the size of the AOF file after the +# latest rewrite (if no rewrite has happened since the restart, the size of +# the AOF at startup is used). +# +# This base size is compared to the current size. If the current size is +# bigger than the specified percentage, the rewrite is triggered. Also +# you need to specify a minimal size for the AOF file to be rewritten, this +# is useful to avoid rewriting the AOF file even if the percentage increase +# is reached but it is still pretty small. +# +# Specify a percentage of zero in order to disable the automatic AOF +# rewrite feature. + +auto-aof-rewrite-percentage 100 +auto-aof-rewrite-min-size 64mb + +# An AOF file may be found to be truncated at the end during the Redis +# startup process, when the AOF data gets loaded back into memory. +# This may happen when the system where Redis is running +# crashes, especially when an ext4 filesystem is mounted without the +# data=ordered option (however this can't happen when Redis itself +# crashes or aborts but the operating system still works correctly). +# +# Redis can either exit with an error when this happens, or load as much +# data as possible (the default now) and start if the AOF file is found +# to be truncated at the end. The following option controls this behavior. +# +# If aof-load-truncated is set to yes, a truncated AOF file is loaded and +# the Redis server starts emitting a log to inform the user of the event. +# Otherwise if the option is set to no, the server aborts with an error +# and refuses to start. When the option is set to no, the user requires +# to fix the AOF file using the "redis-check-aof" utility before to restart +# the server. +# +# Note that if the AOF file will be found to be corrupted in the middle +# the server will still exit with an error. This option only applies when +# Redis will try to read more data from the AOF file but not enough bytes +# will be found. +aof-load-truncated yes + +# Redis can create append-only base files in either RDB or AOF formats. Using +# the RDB format is always faster and more efficient, and disabling it is only +# supported for backward compatibility purposes. +aof-use-rdb-preamble yes + +# Redis supports recording timestamp annotations in the AOF to support restoring +# the data from a specific point-in-time. However, using this capability changes +# the AOF format in a way that may not be compatible with existing AOF parsers. +aof-timestamp-enabled no + +################################ SHUTDOWN ##################################### + +# Maximum time to wait for replicas when shutting down, in seconds. +# +# During shut down, a grace period allows any lagging replicas to catch up with +# the latest replication offset before the master exists. This period can +# prevent data loss, especially for deployments without configured disk backups. +# +# The 'shutdown-timeout' value is the grace period's duration in seconds. It is +# only applicable when the instance has replicas. To disable the feature, set +# the value to 0. +# +# shutdown-timeout 10 + +# When Redis receives a SIGINT or SIGTERM, shutdown is initiated and by default +# an RDB snapshot is written to disk in a blocking operation if save points are configured. +# The options used on signaled shutdown can include the following values: +# default: Saves RDB snapshot only if save points are configured. +# Waits for lagging replicas to catch up. +# save: Forces a DB saving operation even if no save points are configured. +# nosave: Prevents DB saving operation even if one or more save points are configured. +# now: Skips waiting for lagging replicas. +# force: Ignores any errors that would normally prevent the server from exiting. +# +# Any combination of values is allowed as long as "save" and "nosave" are not set simultaneously. +# Example: "nosave force now" +# +# shutdown-on-sigint default +# shutdown-on-sigterm default + +################ NON-DETERMINISTIC LONG BLOCKING COMMANDS ##################### + +# Maximum time in milliseconds for EVAL scripts, functions and in some cases +# modules' commands before Redis can start processing or rejecting other clients. +# +# If the maximum execution time is reached Redis will start to reply to most +# commands with a BUSY error. +# +# In this state Redis will only allow a handful of commands to be executed. +# For instance, SCRIPT KILL, FUNCTION KILL, SHUTDOWN NOSAVE and possibly some +# module specific 'allow-busy' commands. +# +# SCRIPT KILL and FUNCTION KILL will only be able to stop a script that did not +# yet call any write commands, so SHUTDOWN NOSAVE may be the only way to stop +# the server in the case a write command was already issued by the script when +# the user doesn't want to wait for the natural termination of the script. +# +# The default is 5 seconds. It is possible to set it to 0 or a negative value +# to disable this mechanism (uninterrupted execution). Note that in the past +# this config had a different name, which is now an alias, so both of these do +# the same: +# lua-time-limit 5000 +# busy-reply-threshold 5000 + +################################ REDIS CLUSTER ############################### + +# Normal Redis instances can't be part of a Redis Cluster; only nodes that are +# started as cluster nodes can. In order to start a Redis instance as a +# cluster node enable the cluster support uncommenting the following: +# +# cluster-enabled yes + +# Every cluster node has a cluster configuration file. This file is not +# intended to be edited by hand. It is created and updated by Redis nodes. +# Every Redis Cluster node requires a different cluster configuration file. +# Make sure that instances running in the same system do not have +# overlapping cluster configuration file names. +# +# cluster-config-file nodes-6379.conf + +# Cluster node timeout is the amount of milliseconds a node must be unreachable +# for it to be considered in failure state. +# Most other internal time limits are a multiple of the node timeout. +# +# cluster-node-timeout 15000 + +# The cluster port is the port that the cluster bus will listen for inbound connections on. When set +# to the default value, 0, it will be bound to the command port + 10000. Setting this value requires +# you to specify the cluster bus port when executing cluster meet. +# cluster-port 0 + +# A replica of a failing master will avoid to start a failover if its data +# looks too old. +# +# There is no simple way for a replica to actually have an exact measure of +# its "data age", so the following two checks are performed: +# +# 1) If there are multiple replicas able to failover, they exchange messages +# in order to try to give an advantage to the replica with the best +# replication offset (more data from the master processed). +# Replicas will try to get their rank by offset, and apply to the start +# of the failover a delay proportional to their rank. +# +# 2) Every single replica computes the time of the last interaction with +# its master. This can be the last ping or command received (if the master +# is still in the "connected" state), or the time that elapsed since the +# disconnection with the master (if the replication link is currently down). +# If the last interaction is too old, the replica will not try to failover +# at all. +# +# The point "2" can be tuned by user. Specifically a replica will not perform +# the failover if, since the last interaction with the master, the time +# elapsed is greater than: +# +# (node-timeout * cluster-replica-validity-factor) + repl-ping-replica-period +# +# So for example if node-timeout is 30 seconds, and the cluster-replica-validity-factor +# is 10, and assuming a default repl-ping-replica-period of 10 seconds, the +# replica will not try to failover if it was not able to talk with the master +# for longer than 310 seconds. +# +# A large cluster-replica-validity-factor may allow replicas with too old data to failover +# a master, while a too small value may prevent the cluster from being able to +# elect a replica at all. +# +# For maximum availability, it is possible to set the cluster-replica-validity-factor +# to a value of 0, which means, that replicas will always try to failover the +# master regardless of the last time they interacted with the master. +# (However they'll always try to apply a delay proportional to their +# offset rank). +# +# Zero is the only value able to guarantee that when all the partitions heal +# the cluster will always be able to continue. +# +# cluster-replica-validity-factor 10 + +# Cluster replicas are able to migrate to orphaned masters, that are masters +# that are left without working replicas. This improves the cluster ability +# to resist to failures as otherwise an orphaned master can't be failed over +# in case of failure if it has no working replicas. +# +# Replicas migrate to orphaned masters only if there are still at least a +# given number of other working replicas for their old master. This number +# is the "migration barrier". A migration barrier of 1 means that a replica +# will migrate only if there is at least 1 other working replica for its master +# and so forth. It usually reflects the number of replicas you want for every +# master in your cluster. +# +# Default is 1 (replicas migrate only if their masters remain with at least +# one replica). To disable migration just set it to a very large value or +# set cluster-allow-replica-migration to 'no'. +# A value of 0 can be set but is useful only for debugging and dangerous +# in production. +# +# cluster-migration-barrier 1 + +# Turning off this option allows to use less automatic cluster configuration. +# It both disables migration to orphaned masters and migration from masters +# that became empty. +# +# Default is 'yes' (allow automatic migrations). +# +# cluster-allow-replica-migration yes + +# By default Redis Cluster nodes stop accepting queries if they detect there +# is at least a hash slot uncovered (no available node is serving it). +# This way if the cluster is partially down (for example a range of hash slots +# are no longer covered) all the cluster becomes, eventually, unavailable. +# It automatically returns available as soon as all the slots are covered again. +# +# However sometimes you want the subset of the cluster which is working, +# to continue to accept queries for the part of the key space that is still +# covered. In order to do so, just set the cluster-require-full-coverage +# option to no. +# +# cluster-require-full-coverage yes + +# This option, when set to yes, prevents replicas from trying to failover its +# master during master failures. However the replica can still perform a +# manual failover, if forced to do so. +# +# This is useful in different scenarios, especially in the case of multiple +# data center operations, where we want one side to never be promoted if not +# in the case of a total DC failure. +# +# cluster-replica-no-failover no + +# This option, when set to yes, allows nodes to serve read traffic while the +# cluster is in a down state, as long as it believes it owns the slots. +# +# This is useful for two cases. The first case is for when an application +# doesn't require consistency of data during node failures or network partitions. +# One example of this is a cache, where as long as the node has the data it +# should be able to serve it. +# +# The second use case is for configurations that don't meet the recommended +# three shards but want to enable cluster mode and scale later. A +# master outage in a 1 or 2 shard configuration causes a read/write outage to the +# entire cluster without this option set, with it set there is only a write outage. +# Without a quorum of masters, slot ownership will not change automatically. +# +# cluster-allow-reads-when-down no + +# This option, when set to yes, allows nodes to serve pubsub shard traffic while +# the cluster is in a down state, as long as it believes it owns the slots. +# +# This is useful if the application would like to use the pubsub feature even when +# the cluster global stable state is not OK. If the application wants to make sure only +# one shard is serving a given channel, this feature should be kept as yes. +# +# cluster-allow-pubsubshard-when-down yes + +# Cluster link send buffer limit is the limit on the memory usage of an individual +# cluster bus link's send buffer in bytes. Cluster links would be freed if they exceed +# this limit. This is to primarily prevent send buffers from growing unbounded on links +# toward slow peers (E.g. PubSub messages being piled up). +# This limit is disabled by default. Enable this limit when 'mem_cluster_links' INFO field +# and/or 'send-buffer-allocated' entries in the 'CLUSTER LINKS` command output continuously increase. +# Minimum limit of 1gb is recommended so that cluster link buffer can fit in at least a single +# PubSub message by default. (client-query-buffer-limit default value is 1gb) +# +# cluster-link-sendbuf-limit 0 + +# Clusters can configure their announced hostname using this config. This is a common use case for +# applications that need to use TLS Server Name Indication (SNI) or dealing with DNS based +# routing. By default this value is only shown as additional metadata in the CLUSTER SLOTS +# command, but can be changed using 'cluster-preferred-endpoint-type' config. This value is +# communicated along the clusterbus to all nodes, setting it to an empty string will remove +# the hostname and also propagate the removal. +# +# cluster-announce-hostname "" + +# Clusters can advertise how clients should connect to them using either their IP address, +# a user defined hostname, or by declaring they have no endpoint. Which endpoint is +# shown as the preferred endpoint is set by using the cluster-preferred-endpoint-type +# config with values 'ip', 'hostname', or 'unknown-endpoint'. This value controls how +# the endpoint returned for MOVED/ASKING requests as well as the first field of CLUSTER SLOTS. +# If the preferred endpoint type is set to hostname, but no announced hostname is set, a '?' +# will be returned instead. +# +# When a cluster advertises itself as having an unknown endpoint, it's indicating that +# the server doesn't know how clients can reach the cluster. This can happen in certain +# networking situations where there are multiple possible routes to the node, and the +# server doesn't know which one the client took. In this case, the server is expecting +# the client to reach out on the same endpoint it used for making the last request, but use +# the port provided in the response. +# +# cluster-preferred-endpoint-type ip + +# In order to setup your cluster make sure to read the documentation +# available at https://redis.io web site. + +########################## CLUSTER DOCKER/NAT support ######################## + +# In certain deployments, Redis Cluster nodes address discovery fails, because +# addresses are NAT-ted or because ports are forwarded (the typical case is +# Docker and other containers). +# +# In order to make Redis Cluster working in such environments, a static +# configuration where each node knows its public address is needed. The +# following four options are used for this scope, and are: +# +# * cluster-announce-ip +# * cluster-announce-port +# * cluster-announce-tls-port +# * cluster-announce-bus-port +# +# Each instructs the node about its address, client ports (for connections +# without and with TLS) and cluster message bus port. The information is then +# published in the header of the bus packets so that other nodes will be able to +# correctly map the address of the node publishing the information. +# +# If cluster-tls is set to yes and cluster-announce-tls-port is omitted or set +# to zero, then cluster-announce-port refers to the TLS port. Note also that +# cluster-announce-tls-port has no effect if cluster-tls is set to no. +# +# If the above options are not used, the normal Redis Cluster auto-detection +# will be used instead. +# +# Note that when remapped, the bus port may not be at the fixed offset of +# clients port + 10000, so you can specify any port and bus-port depending +# on how they get remapped. If the bus-port is not set, a fixed offset of +# 10000 will be used as usual. +# +# Example: +# +# cluster-announce-ip 10.1.1.5 +# cluster-announce-tls-port 6379 +# cluster-announce-port 0 +# cluster-announce-bus-port 6380 + +################################## SLOW LOG ################################### + +# The Redis Slow Log is a system to log queries that exceeded a specified +# execution time. The execution time does not include the I/O operations +# like talking with the client, sending the reply and so forth, +# but just the time needed to actually execute the command (this is the only +# stage of command execution where the thread is blocked and can not serve +# other requests in the meantime). +# +# You can configure the slow log with two parameters: one tells Redis +# what is the execution time, in microseconds, to exceed in order for the +# command to get logged, and the other parameter is the length of the +# slow log. When a new command is logged the oldest one is removed from the +# queue of logged commands. + +# The following time is expressed in microseconds, so 1000000 is equivalent +# to one second. Note that a negative number disables the slow log, while +# a value of zero forces the logging of every command. +slowlog-log-slower-than 10000 + +# There is no limit to this length. Just be aware that it will consume memory. +# You can reclaim memory used by the slow log with SLOWLOG RESET. +slowlog-max-len 128 + +################################ LATENCY MONITOR ############################## + +# The Redis latency monitoring subsystem samples different operations +# at runtime in order to collect data related to possible sources of +# latency of a Redis instance. +# +# Via the LATENCY command this information is available to the user that can +# print graphs and obtain reports. +# +# The system only logs operations that were performed in a time equal or +# greater than the amount of milliseconds specified via the +# latency-monitor-threshold configuration directive. When its value is set +# to zero, the latency monitor is turned off. +# +# By default latency monitoring is disabled since it is mostly not needed +# if you don't have latency issues, and collecting data has a performance +# impact, that while very small, can be measured under big load. Latency +# monitoring can easily be enabled at runtime using the command +# "CONFIG SET latency-monitor-threshold " if needed. +latency-monitor-threshold 0 + +################################ LATENCY TRACKING ############################## + +# The Redis extended latency monitoring tracks the per command latencies and enables +# exporting the percentile distribution via the INFO latencystats command, +# and cumulative latency distributions (histograms) via the LATENCY command. +# +# By default, the extended latency monitoring is enabled since the overhead +# of keeping track of the command latency is very small. +# latency-tracking yes + +# By default the exported latency percentiles via the INFO latencystats command +# are the p50, p99, and p999. +# latency-tracking-info-percentiles 50 99 99.9 + +############################# EVENT NOTIFICATION ############################## + +# Redis can notify Pub/Sub clients about events happening in the key space. +# This feature is documented at https://redis.io/topics/notifications +# +# For instance if keyspace events notification is enabled, and a client +# performs a DEL operation on key "foo" stored in the Database 0, two +# messages will be published via Pub/Sub: +# +# PUBLISH __keyspace@0__:foo del +# PUBLISH __keyevent@0__:del foo +# +# It is possible to select the events that Redis will notify among a set +# of classes. Every class is identified by a single character: +# +# K Keyspace events, published with __keyspace@__ prefix. +# E Keyevent events, published with __keyevent@__ prefix. +# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ... +# $ String commands +# l List commands +# s Set commands +# h Hash commands +# z Sorted set commands +# x Expired events (events generated every time a key expires) +# e Evicted events (events generated when a key is evicted for maxmemory) +# n New key events (Note: not included in the 'A' class) +# t Stream commands +# d Module key type events +# m Key-miss events (Note: It is not included in the 'A' class) +# A Alias for g$lshzxetd, so that the "AKE" string means all the events +# (Except key-miss events which are excluded from 'A' due to their +# unique nature). +# +# The "notify-keyspace-events" takes as argument a string that is composed +# of zero or multiple characters. The empty string means that notifications +# are disabled. +# +# Example: to enable list and generic events, from the point of view of the +# event name, use: +# +# notify-keyspace-events Elg +# +# Example 2: to get the stream of the expired keys subscribing to channel +# name __keyevent@0__:expired use: +# +# notify-keyspace-events Ex +# +# By default all notifications are disabled because most users don't need +# this feature and the feature has some overhead. Note that if you don't +# specify at least one of K or E, no events will be delivered. +notify-keyspace-events "" + +############################### ADVANCED CONFIG ############################### + +# Hashes are encoded using a memory efficient data structure when they have a +# small number of entries, and the biggest entry does not exceed a given +# threshold. These thresholds can be configured using the following directives. +hash-max-listpack-entries 512 +hash-max-listpack-value 64 + +# Lists are also encoded in a special way to save a lot of space. +# The number of entries allowed per internal list node can be specified +# as a fixed maximum size or a maximum number of elements. +# For a fixed maximum size, use -5 through -1, meaning: +# -5: max size: 64 Kb <-- not recommended for normal workloads +# -4: max size: 32 Kb <-- not recommended +# -3: max size: 16 Kb <-- probably not recommended +# -2: max size: 8 Kb <-- good +# -1: max size: 4 Kb <-- good +# Positive numbers mean store up to _exactly_ that number of elements +# per list node. +# The highest performing option is usually -2 (8 Kb size) or -1 (4 Kb size), +# but if your use case is unique, adjust the settings as necessary. +list-max-listpack-size -2 + +# Lists may also be compressed. +# Compress depth is the number of quicklist ziplist nodes from *each* side of +# the list to *exclude* from compression. The head and tail of the list +# are always uncompressed for fast push/pop operations. Settings are: +# 0: disable all list compression +# 1: depth 1 means "don't start compressing until after 1 node into the list, +# going from either the head or tail" +# So: [head]->node->node->...->node->[tail] +# [head], [tail] will always be uncompressed; inner nodes will compress. +# 2: [head]->[next]->node->node->...->node->[prev]->[tail] +# 2 here means: don't compress head or head->next or tail->prev or tail, +# but compress all nodes between them. +# 3: [head]->[next]->[next]->node->node->...->node->[prev]->[prev]->[tail] +# etc. +list-compress-depth 0 + +# Sets have a special encoding in just one case: when a set is composed +# of just strings that happen to be integers in radix 10 in the range +# of 64 bit signed integers. +# The following configuration setting sets the limit in the size of the +# set in order to use this special memory saving encoding. +set-max-intset-entries 512 + +# Similarly to hashes and lists, sorted sets are also specially encoded in +# order to save a lot of space. This encoding is only used when the length and +# elements of a sorted set are below the following limits: +zset-max-listpack-entries 128 +zset-max-listpack-value 64 + +# HyperLogLog sparse representation bytes limit. The limit includes the +# 16 bytes header. When an HyperLogLog using the sparse representation crosses +# this limit, it is converted into the dense representation. +# +# A value greater than 16000 is totally useless, since at that point the +# dense representation is more memory efficient. +# +# The suggested value is ~ 3000 in order to have the benefits of +# the space efficient encoding without slowing down too much PFADD, +# which is O(N) with the sparse encoding. The value can be raised to +# ~ 10000 when CPU is not a concern, but space is, and the data set is +# composed of many HyperLogLogs with cardinality in the 0 - 15000 range. +hll-sparse-max-bytes 3000 + +# Streams macro node max size / items. The stream data structure is a radix +# tree of big nodes that encode multiple items inside. Using this configuration +# it is possible to configure how big a single node can be in bytes, and the +# maximum number of items it may contain before switching to a new node when +# appending new stream entries. If any of the following settings are set to +# zero, the limit is ignored, so for instance it is possible to set just a +# max entries limit by setting max-bytes to 0 and max-entries to the desired +# value. +stream-node-max-bytes 4096 +stream-node-max-entries 100 + +# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in +# order to help rehashing the main Redis hash table (the one mapping top-level +# keys to values). The hash table implementation Redis uses (see dict.c) +# performs a lazy rehashing: the more operation you run into a hash table +# that is rehashing, the more rehashing "steps" are performed, so if the +# server is idle the rehashing is never complete and some more memory is used +# by the hash table. +# +# The default is to use this millisecond 10 times every second in order to +# actively rehash the main dictionaries, freeing memory when possible. +# +# If unsure: +# use "activerehashing no" if you have hard latency requirements and it is +# not a good thing in your environment that Redis can reply from time to time +# to queries with 2 milliseconds delay. +# +# use "activerehashing yes" if you don't have such hard requirements but +# want to free memory asap when possible. +activerehashing yes + +# The client output buffer limits can be used to force disconnection of clients +# that are not reading data from the server fast enough for some reason (a +# common reason is that a Pub/Sub client can't consume messages as fast as the +# publisher can produce them). +# +# The limit can be set differently for the three different classes of clients: +# +# normal -> normal clients including MONITOR clients +# replica -> replica clients +# pubsub -> clients subscribed to at least one pubsub channel or pattern +# +# The syntax of every client-output-buffer-limit directive is the following: +# +# client-output-buffer-limit +# +# A client is immediately disconnected once the hard limit is reached, or if +# the soft limit is reached and remains reached for the specified number of +# seconds (continuously). +# So for instance if the hard limit is 32 megabytes and the soft limit is +# 16 megabytes / 10 seconds, the client will get disconnected immediately +# if the size of the output buffers reach 32 megabytes, but will also get +# disconnected if the client reaches 16 megabytes and continuously overcomes +# the limit for 10 seconds. +# +# By default normal clients are not limited because they don't receive data +# without asking (in a push way), but just after a request, so only +# asynchronous clients may create a scenario where data is requested faster +# than it can read. +# +# Instead there is a default limit for pubsub and replica clients, since +# subscribers and replicas receive data in a push fashion. +# +# Note that it doesn't make sense to set the replica clients output buffer +# limit lower than the repl-backlog-size config (partial sync will succeed +# and then replica will get disconnected). +# Such a configuration is ignored (the size of repl-backlog-size will be used). +# This doesn't have memory consumption implications since the replica client +# will share the backlog buffers memory. +# +# Both the hard or the soft limit can be disabled by setting them to zero. +client-output-buffer-limit normal 0 0 0 +client-output-buffer-limit replica 256mb 64mb 60 +client-output-buffer-limit pubsub 32mb 8mb 60 + +# Client query buffers accumulate new commands. They are limited to a fixed +# amount by default in order to avoid that a protocol desynchronization (for +# instance due to a bug in the client) will lead to unbound memory usage in +# the query buffer. However you can configure it here if you have very special +# needs, such us huge multi/exec requests or alike. +# +# client-query-buffer-limit 1gb + +# In some scenarios client connections can hog up memory leading to OOM +# errors or data eviction. To avoid this we can cap the accumulated memory +# used by all client connections (all pubsub and normal clients). Once we +# reach that limit connections will be dropped by the server freeing up +# memory. The server will attempt to drop the connections using the most +# memory first. We call this mechanism "client eviction". +# +# Client eviction is configured using the maxmemory-clients setting as follows: +# 0 - client eviction is disabled (default) +# +# A memory value can be used for the client eviction threshold, +# for example: +# maxmemory-clients 1g +# +# A percentage value (between 1% and 100%) means the client eviction threshold +# is based on a percentage of the maxmemory setting. For example to set client +# eviction at 5% of maxmemory: +# maxmemory-clients 5% + +# In the Redis protocol, bulk requests, that are, elements representing single +# strings, are normally limited to 512 mb. However you can change this limit +# here, but must be 1mb or greater +# +# proto-max-bulk-len 512mb + +# Redis calls an internal function to perform many background tasks, like +# closing connections of clients in timeout, purging expired keys that are +# never requested, and so forth. +# +# Not all tasks are performed with the same frequency, but Redis checks for +# tasks to perform according to the specified "hz" value. +# +# By default "hz" is set to 10. Raising the value will use more CPU when +# Redis is idle, but at the same time will make Redis more responsive when +# there are many keys expiring at the same time, and timeouts may be +# handled with more precision. +# +# The range is between 1 and 500, however a value over 100 is usually not +# a good idea. Most users should use the default of 10 and raise this up to +# 100 only in environments where very low latency is required. +hz 10 + +# Normally it is useful to have an HZ value which is proportional to the +# number of clients connected. This is useful in order, for instance, to +# avoid too many clients are processed for each background task invocation +# in order to avoid latency spikes. +# +# Since the default HZ value by default is conservatively set to 10, Redis +# offers, and enables by default, the ability to use an adaptive HZ value +# which will temporarily raise when there are many connected clients. +# +# When dynamic HZ is enabled, the actual configured HZ will be used +# as a baseline, but multiples of the configured HZ value will be actually +# used as needed once more clients are connected. In this way an idle +# instance will use very little CPU time while a busy instance will be +# more responsive. +dynamic-hz yes + +# When a child rewrites the AOF file, if the following option is enabled +# the file will be fsync-ed every 4 MB of data generated. This is useful +# in order to commit the file to the disk more incrementally and avoid +# big latency spikes. +aof-rewrite-incremental-fsync yes + +# When redis saves RDB file, if the following option is enabled +# the file will be fsync-ed every 4 MB of data generated. This is useful +# in order to commit the file to the disk more incrementally and avoid +# big latency spikes. +rdb-save-incremental-fsync yes + +# Redis LFU eviction (see maxmemory setting) can be tuned. However it is a good +# idea to start with the default settings and only change them after investigating +# how to improve the performances and how the keys LFU change over time, which +# is possible to inspect via the OBJECT FREQ command. +# +# There are two tunable parameters in the Redis LFU implementation: the +# counter logarithm factor and the counter decay time. It is important to +# understand what the two parameters mean before changing them. +# +# The LFU counter is just 8 bits per key, it's maximum value is 255, so Redis +# uses a probabilistic increment with logarithmic behavior. Given the value +# of the old counter, when a key is accessed, the counter is incremented in +# this way: +# +# 1. A random number R between 0 and 1 is extracted. +# 2. A probability P is calculated as 1/(old_value*lfu_log_factor+1). +# 3. The counter is incremented only if R < P. +# +# The default lfu-log-factor is 10. This is a table of how the frequency +# counter changes with a different number of accesses with different +# logarithmic factors: +# +# +--------+------------+------------+------------+------------+------------+ +# | factor | 100 hits | 1000 hits | 100K hits | 1M hits | 10M hits | +# +--------+------------+------------+------------+------------+------------+ +# | 0 | 104 | 255 | 255 | 255 | 255 | +# +--------+------------+------------+------------+------------+------------+ +# | 1 | 18 | 49 | 255 | 255 | 255 | +# +--------+------------+------------+------------+------------+------------+ +# | 10 | 10 | 18 | 142 | 255 | 255 | +# +--------+------------+------------+------------+------------+------------+ +# | 100 | 8 | 11 | 49 | 143 | 255 | +# +--------+------------+------------+------------+------------+------------+ +# +# NOTE: The above table was obtained by running the following commands: +# +# redis-benchmark -n 1000000 incr foo +# redis-cli object freq foo +# +# NOTE 2: The counter initial value is 5 in order to give new objects a chance +# to accumulate hits. +# +# The counter decay time is the time, in minutes, that must elapse in order +# for the key counter to be divided by two (or decremented if it has a value +# less <= 10). +# +# The default value for the lfu-decay-time is 1. A special value of 0 means to +# decay the counter every time it happens to be scanned. +# +# lfu-log-factor 10 +# lfu-decay-time 1 + +########################### ACTIVE DEFRAGMENTATION ####################### +# +# What is active defragmentation? +# ------------------------------- +# +# Active (online) defragmentation allows a Redis server to compact the +# spaces left between small allocations and deallocations of data in memory, +# thus allowing to reclaim back memory. +# +# Fragmentation is a natural process that happens with every allocator (but +# less so with Jemalloc, fortunately) and certain workloads. Normally a server +# restart is needed in order to lower the fragmentation, or at least to flush +# away all the data and create it again. However thanks to this feature +# implemented by Oran Agra for Redis 4.0 this process can happen at runtime +# in a "hot" way, while the server is running. +# +# Basically when the fragmentation is over a certain level (see the +# configuration options below) Redis will start to create new copies of the +# values in contiguous memory regions by exploiting certain specific Jemalloc +# features (in order to understand if an allocation is causing fragmentation +# and to allocate it in a better place), and at the same time, will release the +# old copies of the data. This process, repeated incrementally for all the keys +# will cause the fragmentation to drop back to normal values. +# +# Important things to understand: +# +# 1. This feature is disabled by default, and only works if you compiled Redis +# to use the copy of Jemalloc we ship with the source code of Redis. +# This is the default with Linux builds. +# +# 2. You never need to enable this feature if you don't have fragmentation +# issues. +# +# 3. Once you experience fragmentation, you can enable this feature when +# needed with the command "CONFIG SET activedefrag yes". +# +# The configuration parameters are able to fine tune the behavior of the +# defragmentation process. If you are not sure about what they mean it is +# a good idea to leave the defaults untouched. + +# Active defragmentation is disabled by default +# activedefrag no + +# Minimum amount of fragmentation waste to start active defrag +# active-defrag-ignore-bytes 100mb + +# Minimum percentage of fragmentation to start active defrag +# active-defrag-threshold-lower 10 + +# Maximum percentage of fragmentation at which we use maximum effort +# active-defrag-threshold-upper 100 + +# Minimal effort for defrag in CPU percentage, to be used when the lower +# threshold is reached +# active-defrag-cycle-min 1 + +# Maximal effort for defrag in CPU percentage, to be used when the upper +# threshold is reached +# active-defrag-cycle-max 25 + +# Maximum number of set/hash/zset/list fields that will be processed from +# the main dictionary scan +# active-defrag-max-scan-fields 1000 + +# Jemalloc background thread for purging will be enabled by default +jemalloc-bg-thread yes + +# It is possible to pin different threads and processes of Redis to specific +# CPUs in your system, in order to maximize the performances of the server. +# This is useful both in order to pin different Redis threads in different +# CPUs, but also in order to make sure that multiple Redis instances running +# in the same host will be pinned to different CPUs. +# +# Normally you can do this using the "taskset" command, however it is also +# possible to this via Redis configuration directly, both in Linux and FreeBSD. +# +# You can pin the server/IO threads, bio threads, aof rewrite child process, and +# the bgsave child process. The syntax to specify the cpu list is the same as +# the taskset command: +# +# Set redis server/io threads to cpu affinity 0,2,4,6: +# server_cpulist 0-7:2 +# +# Set bio threads to cpu affinity 1,3: +# bio_cpulist 1,3 +# +# Set aof rewrite child process to cpu affinity 8,9,10,11: +# aof_rewrite_cpulist 8-11 +# +# Set bgsave child process to cpu affinity 1,10,11 +# bgsave_cpulist 1,10-11 + +# In some cases redis will emit warnings and even refuse to start if it detects +# that the system is in bad state, it is possible to suppress these warnings +# by setting the following config which takes a space delimited list of warnings +# to suppress +# +# ignore-warnings ARM64-COW-BUG From 67062677b092fed8f0100abcaa4dd5aa2e39b72a Mon Sep 17 00:00:00 2001 From: missytake Date: Sun, 15 Oct 2023 23:11:55 +0200 Subject: [PATCH 02/22] disable some unnecessary rspamd modules --- cmdeploy/src/cmdeploy/__init__.py | 20 +++++++++++++++++++ .../src/cmdeploy}/rspamd/dkim_signing.conf.j2 | 0 cmdeploy/src/cmdeploy/rspamd/hfilter.conf | 5 +++++ cmdeploy/src/cmdeploy/rspamd/phishing.conf | 1 + .../src/cmdeploy}/rspamd/redis.conf | 0 5 files changed, 26 insertions(+) rename {deploy-chatmail/src/deploy_chatmail => cmdeploy/src/cmdeploy}/rspamd/dkim_signing.conf.j2 (100%) create mode 100644 cmdeploy/src/cmdeploy/rspamd/hfilter.conf create mode 100644 cmdeploy/src/cmdeploy/rspamd/phishing.conf rename {deploy-chatmail/src/deploy_chatmail => cmdeploy/src/cmdeploy}/rspamd/redis.conf (100%) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index f1563d4..6cd991c 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -396,6 +396,26 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: """Configures rspamd for Rate Limiting.""" need_restart = False + phishing_conf = files.put( + name="disable phishing rspamd plugin", + src=importlib.resources.files(__package__).joinpath("rspamd/phishing.conf"), + dest="/etc/rspamd/local.d/phishing.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= phishing_conf.changed + + hfilter = files.put( + name="disable hfilter rspamd plugin", + src=importlib.resources.files(__package__).joinpath("rspamd/hfilter.conf"), + dest="/etc/rspamd/local.d/hfilter.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= hfilter.changed + dkim_directory = "/var/lib/rspamd/dkim/" dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" diff --git a/deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 b/cmdeploy/src/cmdeploy/rspamd/dkim_signing.conf.j2 similarity index 100% rename from deploy-chatmail/src/deploy_chatmail/rspamd/dkim_signing.conf.j2 rename to cmdeploy/src/cmdeploy/rspamd/dkim_signing.conf.j2 diff --git a/cmdeploy/src/cmdeploy/rspamd/hfilter.conf b/cmdeploy/src/cmdeploy/rspamd/hfilter.conf new file mode 100644 index 0000000..87efb91 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/hfilter.conf @@ -0,0 +1,5 @@ +helo_enabled = false; +hostname_enabled = false; +url_enabled = false; +from_enabled = false; +rcpt_enabled = false; diff --git a/cmdeploy/src/cmdeploy/rspamd/phishing.conf b/cmdeploy/src/cmdeploy/rspamd/phishing.conf new file mode 100644 index 0000000..69be164 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/phishing.conf @@ -0,0 +1 @@ +phishtank_enabled = false; diff --git a/deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf b/cmdeploy/src/cmdeploy/rspamd/redis.conf similarity index 100% rename from deploy-chatmail/src/deploy_chatmail/rspamd/redis.conf rename to cmdeploy/src/cmdeploy/rspamd/redis.conf From 28fc91f5f35ae66ca07733bd0a722900336abf6d Mon Sep 17 00:00:00 2001 From: missytake Date: Sun, 15 Oct 2023 23:25:36 +0200 Subject: [PATCH 03/22] rspamd: add rate limiting --- cmdeploy/src/cmdeploy/__init__.py | 10 ++++++++++ cmdeploy/src/cmdeploy/rspamd/ratelimit.conf | 9 +++++++++ 2 files changed, 19 insertions(+) create mode 100644 cmdeploy/src/cmdeploy/rspamd/ratelimit.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 6cd991c..06401b4 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -416,6 +416,16 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= hfilter.changed + ratelimit_conf = files.put( + name="enable rate limiting", + src=importlib.resources.files(__package__).joinpath("rspamd/ratelimit.conf"), + dest="/etc/rspamd/local.d/ratelimit.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= ratelimit_conf.changed + dkim_directory = "/var/lib/rspamd/dkim/" dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" diff --git a/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf b/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf new file mode 100644 index 0000000..fe6bb18 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf @@ -0,0 +1,9 @@ +rates { + user = { + bucket = { + burst = 110; + rate = "90 / 1min"; + } + } +} +whitelisted_user = "/etc/rspamd/local.d/whitelisted_users_ratelimit.map" From a2316beab1ef7369304f8a4196db4ea70b2556b2 Mon Sep 17 00:00:00 2001 From: missytake Date: Sun, 15 Oct 2023 23:37:29 +0200 Subject: [PATCH 04/22] rspamd: disable RBL checks --- cmdeploy/src/cmdeploy/__init__.py | 20 ++++++++++++++++++++ cmdeploy/src/cmdeploy/rspamd/options.inc | 1 + cmdeploy/src/cmdeploy/rspamd/rbl.conf | 4 ++++ 3 files changed, 25 insertions(+) create mode 100644 cmdeploy/src/cmdeploy/rspamd/options.inc create mode 100644 cmdeploy/src/cmdeploy/rspamd/rbl.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 06401b4..11a71a9 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -406,6 +406,26 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= phishing_conf.changed + rbl = files.put( + name="disable rbl rspamd plugin", + src=importlib.resources.files(__package__).joinpath("rspamd/rbl.conf"), + dest="/etc/rspamd/override.d/rbl.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= rbl.changed + + options_inc = files.put( + name="disable fuzzy checks", + src=importlib.resources.files(__package__).joinpath("rspamd/options.inc"), + dest="/etc/rspamd/local.d/options.inc", + user="root", + group="root", + mode="644", + ) + need_restart |= options_inc.changed + hfilter = files.put( name="disable hfilter rspamd plugin", src=importlib.resources.files(__package__).joinpath("rspamd/hfilter.conf"), diff --git a/cmdeploy/src/cmdeploy/rspamd/options.inc b/cmdeploy/src/cmdeploy/rspamd/options.inc new file mode 100644 index 0000000..a8a76a4 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/options.inc @@ -0,0 +1 @@ +filters = "dkim"; diff --git a/cmdeploy/src/cmdeploy/rspamd/rbl.conf b/cmdeploy/src/cmdeploy/rspamd/rbl.conf new file mode 100644 index 0000000..f0f1b78 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/rbl.conf @@ -0,0 +1,4 @@ +url_whitelist = []; + +rbls { +} From bf863f05b6473340287b56d10738c7fb6d6c9f68 Mon Sep 17 00:00:00 2001 From: missytake Date: Mon, 16 Oct 2023 17:05:19 +0200 Subject: [PATCH 05/22] rspamd: add redis-server for caching --- cmdeploy/src/cmdeploy/__init__.py | 10 ++++++++++ cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf | 1 + 2 files changed, 11 insertions(+) create mode 100644 cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 11a71a9..859be88 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -436,6 +436,16 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= hfilter.changed + redis_conf = files.put( + name="enable redis for caching", + src=importlib.resources.files(__package__).joinpath("rspamd/rspamd_redis.conf"), + dest="/etc/rspamd/local.d/redis.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= redis_conf.changed + ratelimit_conf = files.put( name="enable rate limiting", src=importlib.resources.files(__package__).joinpath("rspamd/ratelimit.conf"), diff --git a/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf b/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf new file mode 100644 index 0000000..5a9c582 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf @@ -0,0 +1 @@ +servers = "127.0.0.1"; From 1b15ec0eaebea8b1df2bd62ffded9c55248a4358 Mon Sep 17 00:00:00 2001 From: missytake Date: Mon, 16 Oct 2023 17:06:03 +0200 Subject: [PATCH 06/22] rspamd: Significantly lower ratelimit; without read receipts this should be more than fine --- cmdeploy/src/cmdeploy/rspamd/ratelimit.conf | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf b/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf index fe6bb18..f9b7912 100644 --- a/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf +++ b/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf @@ -1,9 +1,9 @@ rates { user = { bucket = { - burst = 110; - rate = "90 / 1min"; + burst = 60; + rate = "40 / 1min"; } } } -whitelisted_user = "/etc/rspamd/local.d/whitelisted_users_ratelimit.map" +whitelisted_user = "/etc/rspamd/local.d/whitelisted_users_ratelimit.map"; From 17a919ee537d62a310e11d387702c44643565f00 Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 09:58:47 +0100 Subject: [PATCH 07/22] lint: fix 3 issues --- cmdeploy/src/cmdeploy/__init__.py | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 859be88..22b0be3 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -384,11 +384,7 @@ def remove_opendkim() -> bool: present=False, ) - apt.packages( - name="Remove openDKIM", - packages="opendkim", - present=False - ) + apt.packages(name="Remove openDKIM", packages="opendkim", present=False) return False @@ -460,7 +456,9 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" dkim_config = files.template( - src=importlib.resources.files(__package__).joinpath("rspamd/dkim_signing.conf.j2"), + src=importlib.resources.files(__package__).joinpath( + "rspamd/dkim_signing.conf.j2" + ), dest="/etc/rspamd/local.d/dkim_signing.conf", user="root", group="root", @@ -631,7 +629,6 @@ def deploy_chatmail(config_path: Path) -> None: restarted=rspamd_need_restart, ) - systemd.service( name="Start and enable MTA-STS daemon", service="mta-sts-daemon.service", From 7b90b936dd19ba24bffed6c12996211bbce5fe77 Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 10:00:16 +0100 Subject: [PATCH 08/22] tests: add test for rejecting SPF & DMARC fails --- chatmaild/src/chatmaild/tests/mail-data/plain.eml | 4 ++-- cmdeploy/src/cmdeploy/tests/online/test_1_basic.py | 14 ++++++++++++++ 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/chatmaild/src/chatmaild/tests/mail-data/plain.eml b/chatmaild/src/chatmaild/tests/mail-data/plain.eml index 69867b8..80a2542 100644 --- a/chatmaild/src/chatmaild/tests/mail-data/plain.eml +++ b/chatmaild/src/chatmaild/tests/mail-data/plain.eml @@ -7,7 +7,7 @@ Date: Sun, 15 Oct 2023 16:41:44 +0000 Message-ID: References: Chat-Version: 1.0 -Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual; +Autocrypt: addr={from_addr}; prefer-encrypt=mutual; keydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m nNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID FgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I @@ -20,4 +20,4 @@ Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no Hi! - + diff --git a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py index 8dafc70..1edd9df 100644 --- a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py +++ b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py @@ -42,6 +42,20 @@ def test_reject_forged_from(cmsetup, maildata, gencreds, lp, forgeaddr): assert "500" in str(e.value) +@pytest.mark.parametrize("from_addr", ["fake@example.org", "fake@testrun.org"]) +def test_reject_wrong_dmarc_spf(cmsetup, maildata, from_addr): + """Test that emails with missing or wrong DKIM and SPF entries are rejected.""" + # create recipient + recipient = "charlie@c1.testrun.org" # cmsetup.gen_users(1)[0] + # craft email object with fake sender + msg = maildata("plain.eml", from_addr=from_addr, to_addr=recipient).as_string() + # initiate SMTP connection + with smtplib.SMTP(cmsetup.maildomain, 25) as s: + with pytest.raises(smtplib.SMTPException): + s.sendmail(from_addr=from_addr, to_addrs=recipient, msg=msg) + # assert response code == 500 or something + + @pytest.mark.slow def test_exceed_rate_limit(cmsetup, gencreds, maildata, chatmail_config): """Test that the per-account send-mail limit is exceeded.""" From ecbf1355499060499dd6282958faec228307c9fe Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 10:22:44 +0100 Subject: [PATCH 09/22] rspamd: install rspamd + redis --- cmdeploy/src/cmdeploy/__init__.py | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 22b0be3..bb97709 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -392,6 +392,11 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: """Configures rspamd for Rate Limiting.""" need_restart = False + apt.packages( + name="apt install rspamd", + packages="rspamd", + ) + phishing_conf = files.put( name="disable phishing rspamd plugin", src=importlib.resources.files(__package__).joinpath("rspamd/phishing.conf"), @@ -496,6 +501,11 @@ def _configure_redis() -> bool: """Configures redis as a key-value storage for rspamd.""" need_restart = False + apt.packages( + name="apt install redis-server", + packages="redis-server", + ) + redis_config = files.put( src=importlib.resources.files(__package__).joinpath("rspamd/redis.conf"), dest="/etc/redis/redis.conf", @@ -610,8 +620,8 @@ def deploy_chatmail(config_path: Path) -> None: nginx_need_restart = _configure_nginx(mail_domain) remove_opendkim() - rspamd_need_restart = _configure_rspamd("dkim", mail_domain) redis_need_restart = _configure_redis() + rspamd_need_restart = _configure_rspamd("dkim", mail_domain) systemd.service( name="Start and enable redis-server", From fd679af577375cd72a792f7d3a51978ba5f6c6cd Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 10:27:11 +0100 Subject: [PATCH 10/22] rspamd: generate DKIM keys with rspamadm --- cmdeploy/src/cmdeploy/__init__.py | 33 ++++++++++++--------------- cmdeploy/src/cmdeploy/chatmail.zone.f | 2 +- cmdeploy/src/cmdeploy/dns.py | 8 ++++--- 3 files changed, 21 insertions(+), 22 deletions(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index bb97709..3a36167 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -130,6 +130,19 @@ def _configure_opendkim(domain: str, dkim_selector: str = "dkim") -> bool: """Configures OpenDKIM""" need_restart = False + server.group(name="Create opendkim group", group="opendkim", system=True) + server.user( + name="Add postfix user to opendkim group for socket access", + user="postfix", + groups=["opendkim"], + system=True, + ) + + apt.packages( + name="apt install opendkim opendkim-tools", + packages=["opendkim", "opendkim-tools"], + ) + main_config = files.template( src=importlib.resources.files(__package__).joinpath("opendkim/opendkim.conf"), dest="/etc/opendkim.conf", @@ -168,7 +181,6 @@ def _configure_opendkim(domain: str, dkim_selector: str = "dkim") -> bool: config={"domain_name": domain, "opendkim_selector": dkim_selector}, ) need_restart |= signing_table.changed - files.directory( name="Add opendkim socket directory to /var/spool/postfix", path="/var/spool/postfix/opendkim", @@ -459,6 +471,7 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: dkim_directory = "/var/lib/rspamd/dkim/" dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" + dkim_dns_file = f"{dkim_directory}{mail_domain}.{dkim_selector}.zone" dkim_config = files.template( src=importlib.resources.files(__package__).joinpath( @@ -488,7 +501,7 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: server.shell( name="Generate DKIM domain keys with rspamd", commands=[ - f"rspamadm dkim_keygen -s {dkim_selector} -d {mail_domain} -k {dkim_key_path}" + f"rspamadm dkim_keygen -b 2048 -s {dkim_selector} -d {mail_domain} -k {dkim_key_path} > {dkim_dns_file}" ], _sudo=True, _sudo_user="_rspamd", @@ -545,14 +558,6 @@ def deploy_chatmail(config_path: Path) -> None: server.group(name="Create vmail group", group="vmail", system=True) server.user(name="Create vmail user", user="vmail", group="vmail", system=True) - server.group(name="Create opendkim group", group="opendkim", system=True) - server.user( - name="Add postfix user to opendkim group for socket access", - user="postfix", - groups=["opendkim"], - system=True, - ) - # Run local DNS resolver `unbound`. # `resolvconf` takes care of setting up /etc/resolv.conf # to use 127.0.0.1 as the resolver. @@ -587,14 +592,6 @@ def deploy_chatmail(config_path: Path) -> None: packages=["dovecot-imapd", "dovecot-lmtpd"], ) - apt.packages( - name="Install OpenDKIM", - packages=[ - "opendkim", - "opendkim-tools", - ], - ) - apt.packages( name="Install nginx", packages=["nginx"], diff --git a/cmdeploy/src/cmdeploy/chatmail.zone.f b/cmdeploy/src/cmdeploy/chatmail.zone.f index 2fd55ad..da58aa8 100644 --- a/cmdeploy/src/cmdeploy/chatmail.zone.f +++ b/cmdeploy/src/cmdeploy/chatmail.zone.f @@ -7,7 +7,7 @@ _imap._tcp.{chatmail_domain}. SRV 0 1 143 {chatmail_domain}. _imaps._tcp.{chatmail_domain}. SRV 0 1 993 {chatmail_domain}. {chatmail_domain}. CAA 128 issue "letsencrypt.org;accounturi={acme_account_url}" {chatmail_domain}. TXT "v=spf1 a:{chatmail_domain} -all" -_dmarc.{chatmail_domain}. TXT "v=DMARC1;p=reject;rua=mailto:{email};ruf=mailto:{email};fo=1;adkim=r;aspf=r" +_dmarc.{chatmail_domain}. TXT "v=DMARC1;p=reject;rua=mailto:{email};ruf=mailto:{email};fo=1;adkim=s;aspf=s" _mta-sts.{chatmail_domain}. TXT "v=STSv1; id={sts_id}" mta-sts.{chatmail_domain}. CNAME {chatmail_domain}. www.{chatmail_domain}. CNAME {chatmail_domain}. diff --git a/cmdeploy/src/cmdeploy/dns.py b/cmdeploy/src/cmdeploy/dns.py index e8e740a..5a051a6 100644 --- a/cmdeploy/src/cmdeploy/dns.py +++ b/cmdeploy/src/cmdeploy/dns.py @@ -60,6 +60,7 @@ def show_dns(args, out): continue line = line.replace("\t", " ") lines.append(line) + lines[0] = f"dkim._domainkey.{mail_domain}. IN TXT " + lines[0].strip("dkim._domainkey IN TXT ") return "\n".join(lines) print("Checking your DKIM keys and DNS entries...") @@ -68,7 +69,8 @@ def show_dns(args, out): except subprocess.CalledProcessError: print("Please run `cmdeploy run` first.") return - dkim_entry = read_dkim_entries(out.shell_output(f"{ssh} -- opendkim-genzone -F")) + dkim_entry = read_dkim_entries(out.shell_output(f"{ssh} -- cat /var/lib/rspamd/dkim/{mail_domain}.dkim.zone")) + ipv6 = dns.get_ipv6() reverse_ipv6 = dns.check_ptr_record(ipv6, mail_domain) @@ -142,8 +144,8 @@ def show_dns(args, out): domain, data = "\n".join(dkim_lines).split(" IN TXT ") current = dns.get("TXT", domain.strip()[:-1]) if current: - current = "( %s )" % (current.replace('" "', '"\n "')) - if current.replace(";", "\\;") != data: + current = "( %s" % (current.replace('" "', '"\n "')) + if current != data: to_print.append(dkim_entry) else: to_print.append(dkim_entry) From 265403e110f98a0cc6a928ed98f0ceadb2f962da Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 12:45:58 +0100 Subject: [PATCH 11/22] revert "Significantly lower ratelimit" --- cmdeploy/src/cmdeploy/__init__.py | 11 ++++------- cmdeploy/src/cmdeploy/rspamd/ratelimit.conf | 9 --------- 2 files changed, 4 insertions(+), 16 deletions(-) delete mode 100644 cmdeploy/src/cmdeploy/rspamd/ratelimit.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 3a36167..cbcd41f 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -459,13 +459,10 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= redis_conf.changed - ratelimit_conf = files.put( - name="enable rate limiting", - src=importlib.resources.files(__package__).joinpath("rspamd/ratelimit.conf"), - dest="/etc/rspamd/local.d/ratelimit.conf", - user="root", - group="root", - mode="644", + ratelimit_conf = files.file( + name="disable rate limiting", + path="/etc/rspamd/local.d/ratelimit.conf", + present=False, ) need_restart |= ratelimit_conf.changed diff --git a/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf b/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf deleted file mode 100644 index f9b7912..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/ratelimit.conf +++ /dev/null @@ -1,9 +0,0 @@ -rates { - user = { - bucket = { - burst = 60; - rate = "40 / 1min"; - } - } -} -whitelisted_user = "/etc/rspamd/local.d/whitelisted_users_ratelimit.map"; From 536c12d9890d3e5ef1951e75f7eb1a1d338a4aff Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 26 Dec 2023 13:18:48 +0100 Subject: [PATCH 12/22] tests: use generic recipient for DKIM testing --- .../src/cmdeploy/tests/online/test_1_basic.py | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py index 1edd9df..7cacd4e 100644 --- a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py +++ b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py @@ -43,16 +43,13 @@ def test_reject_forged_from(cmsetup, maildata, gencreds, lp, forgeaddr): @pytest.mark.parametrize("from_addr", ["fake@example.org", "fake@testrun.org"]) -def test_reject_wrong_dmarc_spf(cmsetup, maildata, from_addr): - """Test that emails with missing or wrong DKIM and SPF entries are rejected.""" - # create recipient - recipient = "charlie@c1.testrun.org" # cmsetup.gen_users(1)[0] - # craft email object with fake sender - msg = maildata("plain.eml", from_addr=from_addr, to_addr=recipient).as_string() - # initiate SMTP connection +def test_reject_missing_dkim(cmsetup, maildata, from_addr): + """Test that emails with missing or wrong DKIM entries are rejected.""" + recipient = cmsetup.gen_users(1)[0] + msg = maildata("plain.eml", from_addr=from_addr, to_addr=recipient.addr).as_string() with smtplib.SMTP(cmsetup.maildomain, 25) as s: - with pytest.raises(smtplib.SMTPException): - s.sendmail(from_addr=from_addr, to_addrs=recipient, msg=msg) + with pytest.raises(smtplib.SMTPDataError): + s.sendmail(from_addr=from_addr, to_addrs=recipient.addr, msg=msg) # assert response code == 500 or something From 35422323937114f0225ef66ef65b74266907882c Mon Sep 17 00:00:00 2001 From: missytake Date: Wed, 27 Dec 2023 11:17:24 +0100 Subject: [PATCH 13/22] rspamd: reject emails with invalid SPF, DKIM, DMARC --- cmdeploy/src/cmdeploy/__init__.py | 12 ++++++++++++ cmdeploy/src/cmdeploy/rspamd/policies_group.conf | 14 ++++++++++++++ 2 files changed, 26 insertions(+) create mode 100644 cmdeploy/src/cmdeploy/rspamd/policies_group.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index cbcd41f..97d8b21 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -449,6 +449,18 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= hfilter.changed + groups_conf = files.put( + name="set metrics for DKIM, SPF, and DMARC fails", + src=importlib.resources.files(__package__).joinpath( + "rspamd/policies_group.conf" + ), + dest="/etc/rspamd/local.d/policies_group.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= groups_conf.changed + redis_conf = files.put( name="enable redis for caching", src=importlib.resources.files(__package__).joinpath("rspamd/rspamd_redis.conf"), diff --git a/cmdeploy/src/cmdeploy/rspamd/policies_group.conf b/cmdeploy/src/cmdeploy/rspamd/policies_group.conf new file mode 100644 index 0000000..6ad714d --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/policies_group.conf @@ -0,0 +1,14 @@ +symbols { + "R_DKIM_REJECT" { + weight = 15; + } + "R_SPF_FAIL" { + weight = 15; + } + "R_DKIM_NA" { + weight = 15; + } + "DMARC_POLICY_REJECT" { + weight = 15; + } +} \ No newline at end of file From 66debb9245f01a4cac9dcbfea2af4f64f9228bd7 Mon Sep 17 00:00:00 2001 From: missytake Date: Wed, 27 Dec 2023 13:34:24 +0100 Subject: [PATCH 14/22] lint fixes, final touch --- cmdeploy/src/cmdeploy/dns.py | 9 ++++++--- cmdeploy/src/cmdeploy/tests/online/test_1_basic.py | 5 ++--- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/cmdeploy/src/cmdeploy/dns.py b/cmdeploy/src/cmdeploy/dns.py index 5a051a6..8a1baca 100644 --- a/cmdeploy/src/cmdeploy/dns.py +++ b/cmdeploy/src/cmdeploy/dns.py @@ -60,7 +60,9 @@ def show_dns(args, out): continue line = line.replace("\t", " ") lines.append(line) - lines[0] = f"dkim._domainkey.{mail_domain}. IN TXT " + lines[0].strip("dkim._domainkey IN TXT ") + lines[0] = f"dkim._domainkey.{mail_domain}. IN TXT " + lines[0].strip( + "dkim._domainkey IN TXT " + ) return "\n".join(lines) print("Checking your DKIM keys and DNS entries...") @@ -69,8 +71,9 @@ def show_dns(args, out): except subprocess.CalledProcessError: print("Please run `cmdeploy run` first.") return - dkim_entry = read_dkim_entries(out.shell_output(f"{ssh} -- cat /var/lib/rspamd/dkim/{mail_domain}.dkim.zone")) - + dkim_entry = read_dkim_entries( + out.shell_output(f"{ssh} -- cat /var/lib/rspamd/dkim/{mail_domain}.dkim.zone") + ) ipv6 = dns.get_ipv6() reverse_ipv6 = dns.check_ptr_record(ipv6, mail_domain) diff --git a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py index 7cacd4e..316e933 100644 --- a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py +++ b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py @@ -44,13 +44,12 @@ def test_reject_forged_from(cmsetup, maildata, gencreds, lp, forgeaddr): @pytest.mark.parametrize("from_addr", ["fake@example.org", "fake@testrun.org"]) def test_reject_missing_dkim(cmsetup, maildata, from_addr): - """Test that emails with missing or wrong DKIM entries are rejected.""" + """Test that emails with missing or wrong DMARC, DKIM, and SPF entries are rejected.""" recipient = cmsetup.gen_users(1)[0] msg = maildata("plain.eml", from_addr=from_addr, to_addr=recipient.addr).as_string() with smtplib.SMTP(cmsetup.maildomain, 25) as s: - with pytest.raises(smtplib.SMTPDataError): + with pytest.raises(smtplib.SMTPDataError, match="Spam message rejected"): s.sendmail(from_addr=from_addr, to_addrs=recipient.addr, msg=msg) - # assert response code == 500 or something @pytest.mark.slow From 7758c94e3180779fa537fa0c8ee8637bd4fc7740 Mon Sep 17 00:00:00 2001 From: missytake Date: Tue, 9 Jan 2024 16:47:07 +0100 Subject: [PATCH 15/22] rspamd: remove redis (not needed) --- cmdeploy/src/cmdeploy/__init__.py | 40 - cmdeploy/src/cmdeploy/rspamd/redis.conf | 2276 ----------------- .../src/cmdeploy/rspamd/rspamd_redis.conf | 1 - 3 files changed, 2317 deletions(-) delete mode 100644 cmdeploy/src/cmdeploy/rspamd/redis.conf delete mode 100644 cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 97d8b21..9d5fe94 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -461,16 +461,6 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= groups_conf.changed - redis_conf = files.put( - name="enable redis for caching", - src=importlib.resources.files(__package__).joinpath("rspamd/rspamd_redis.conf"), - dest="/etc/rspamd/local.d/redis.conf", - user="root", - group="root", - mode="644", - ) - need_restart |= redis_conf.changed - ratelimit_conf = files.file( name="disable rate limiting", path="/etc/rspamd/local.d/ratelimit.conf", @@ -519,27 +509,6 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: return need_restart -def _configure_redis() -> bool: - """Configures redis as a key-value storage for rspamd.""" - need_restart = False - - apt.packages( - name="apt install redis-server", - packages="redis-server", - ) - - redis_config = files.put( - src=importlib.resources.files(__package__).joinpath("rspamd/redis.conf"), - dest="/etc/redis/redis.conf", - user="redis", - group="redis", - mode="640", - ) - need_restart |= redis_config.changed - - return need_restart - - def check_config(config): mail_domain = config.mail_domain if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"): @@ -626,17 +595,8 @@ def deploy_chatmail(config_path: Path) -> None: nginx_need_restart = _configure_nginx(mail_domain) remove_opendkim() - redis_need_restart = _configure_redis() rspamd_need_restart = _configure_rspamd("dkim", mail_domain) - systemd.service( - name="Start and enable redis-server", - service="redis-server.service", - running=True, - enabled=True, - restarted=redis_need_restart, - ) - systemd.service( name="Start and enable rspamd", service="rspamd.service", diff --git a/cmdeploy/src/cmdeploy/rspamd/redis.conf b/cmdeploy/src/cmdeploy/rspamd/redis.conf deleted file mode 100644 index 2e17518..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/redis.conf +++ /dev/null @@ -1,2276 +0,0 @@ -# Redis configuration file example. -# -# Note that in order to read the configuration file, Redis must be -# started with the file path as first argument: -# -# ./redis-server /path/to/redis.conf - -# Note on units: when memory size is needed, it is possible to specify -# it in the usual form of 1k 5GB 4M and so forth: -# -# 1k => 1000 bytes -# 1kb => 1024 bytes -# 1m => 1000000 bytes -# 1mb => 1024*1024 bytes -# 1g => 1000000000 bytes -# 1gb => 1024*1024*1024 bytes -# -# units are case insensitive so 1GB 1Gb 1gB are all the same. - -################################## INCLUDES ################################### - -# Include one or more other config files here. This is useful if you -# have a standard template that goes to all Redis servers but also need -# to customize a few per-server settings. Include files can include -# other files, so use this wisely. -# -# Note that option "include" won't be rewritten by command "CONFIG REWRITE" -# from admin or Redis Sentinel. Since Redis always uses the last processed -# line as value of a configuration directive, you'd better put includes -# at the beginning of this file to avoid overwriting config change at runtime. -# -# If instead you are interested in using includes to override configuration -# options, it is better to use include as the last line. -# -# Included paths may contain wildcards. All files matching the wildcards will -# be included in alphabetical order. -# Note that if an include path contains a wildcards but no files match it when -# the server is started, the include statement will be ignored and no error will -# be emitted. It is safe, therefore, to include wildcard files from empty -# directories. -# -# include /path/to/local.conf -# include /path/to/other.conf -# include /path/to/fragments/*.conf -# - -################################## MODULES ##################################### - -# Load modules at startup. If the server is not able to load modules -# it will abort. It is possible to use multiple loadmodule directives. -# -# loadmodule /path/to/my_module.so -# loadmodule /path/to/other_module.so - -################################## NETWORK ##################################### - -# By default, if no "bind" configuration directive is specified, Redis listens -# for connections from all available network interfaces on the host machine. -# It is possible to listen to just one or multiple selected interfaces using -# the "bind" configuration directive, followed by one or more IP addresses. -# Each address can be prefixed by "-", which means that redis will not fail to -# start if the address is not available. Being not available only refers to -# addresses that does not correspond to any network interface. Addresses that -# are already in use will always fail, and unsupported protocols will always BE -# silently skipped. -# -# Examples: -# -# bind 192.168.1.100 10.0.0.1 # listens on two specific IPv4 addresses -# bind 127.0.0.1 ::1 # listens on loopback IPv4 and IPv6 -# bind * -::* # like the default, all available interfaces -# -# ~~~ WARNING ~~~ If the computer running Redis is directly exposed to the -# internet, binding to all the interfaces is dangerous and will expose the -# instance to everybody on the internet. So by default we uncomment the -# following bind directive, that will force Redis to listen only on the -# IPv4 and IPv6 (if available) loopback interface addresses (this means Redis -# will only be able to accept client connections from the same host that it is -# running on). -# -# IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES -# COMMENT OUT THE FOLLOWING LINE. -# -# You will also need to set a password unless you explicitly disable protected -# mode. -# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -bind 127.0.0.1 -::1 - -# By default, outgoing connections (from replica to master, from Sentinel to -# instances, cluster bus, etc.) are not bound to a specific local address. In -# most cases, this means the operating system will handle that based on routing -# and the interface through which the connection goes out. -# -# Using bind-source-addr it is possible to configure a specific address to bind -# to, which may also affect how the connection gets routed. -# -# Example: -# -# bind-source-addr 10.0.0.1 - -# Protected mode is a layer of security protection, in order to avoid that -# Redis instances left open on the internet are accessed and exploited. -# -# When protected mode is on and the default user has no password, the server -# only accepts local connections from the IPv4 address (127.0.0.1), IPv6 address -# (::1) or Unix domain sockets. -# -# By default protected mode is enabled. You should disable it only if -# you are sure you want clients from other hosts to connect to Redis -# even if no authentication is configured. -protected-mode yes - -# Redis uses default hardened security configuration directives to reduce the -# attack surface on innocent users. Therefore, several sensitive configuration -# directives are immutable, and some potentially-dangerous commands are blocked. -# -# Configuration directives that control files that Redis writes to (e.g., 'dir' -# and 'dbfilename') and that aren't usually modified during runtime -# are protected by making them immutable. -# -# Commands that can increase the attack surface of Redis and that aren't usually -# called by users are blocked by default. -# -# These can be exposed to either all connections or just local ones by setting -# each of the configs listed below to either of these values: -# -# no - Block for any connection (remain immutable) -# yes - Allow for any connection (no protection) -# local - Allow only for local connections. Ones originating from the -# IPv4 address (127.0.0.1), IPv6 address (::1) or Unix domain sockets. -# -# enable-protected-configs no -# enable-debug-command no -# enable-module-command no - -# Accept connections on the specified port, default is 6379 (IANA #815344). -# If port 0 is specified Redis will not listen on a TCP socket. -port 6379 - -# TCP listen() backlog. -# -# In high requests-per-second environments you need a high backlog in order -# to avoid slow clients connection issues. Note that the Linux kernel -# will silently truncate it to the value of /proc/sys/net/core/somaxconn so -# make sure to raise both the value of somaxconn and tcp_max_syn_backlog -# in order to get the desired effect. -tcp-backlog 511 - -# Unix socket. -# -# Specify the path for the Unix socket that will be used to listen for -# incoming connections. There is no default, so Redis will not listen -# on a unix socket when not specified. -# -# unixsocket /run/redis/redis-server.sock -# unixsocketperm 700 - -# Close the connection after a client is idle for N seconds (0 to disable) -timeout 0 - -# TCP keepalive. -# -# If non-zero, use SO_KEEPALIVE to send TCP ACKs to clients in absence -# of communication. This is useful for two reasons: -# -# 1) Detect dead peers. -# 2) Force network equipment in the middle to consider the connection to be -# alive. -# -# On Linux, the specified value (in seconds) is the period used to send ACKs. -# Note that to close the connection the double of the time is needed. -# On other kernels the period depends on the kernel configuration. -# -# A reasonable value for this option is 300 seconds, which is the new -# Redis default starting with Redis 3.2.1. -tcp-keepalive 300 - -# Apply OS-specific mechanism to mark the listening socket with the specified -# ID, to support advanced routing and filtering capabilities. -# -# On Linux, the ID represents a connection mark. -# On FreeBSD, the ID represents a socket cookie ID. -# On OpenBSD, the ID represents a route table ID. -# -# The default value is 0, which implies no marking is required. -# socket-mark-id 0 - -################################# TLS/SSL ##################################### - -# By default, TLS/SSL is disabled. To enable it, the "tls-port" configuration -# directive can be used to define TLS-listening ports. To enable TLS on the -# default port, use: -# -# port 0 -# tls-port 6379 - -# Configure a X.509 certificate and private key to use for authenticating the -# server to connected clients, masters or cluster peers. These files should be -# PEM formatted. -# -# tls-cert-file redis.crt -# tls-key-file redis.key -# -# If the key file is encrypted using a passphrase, it can be included here -# as well. -# -# tls-key-file-pass secret - -# Normally Redis uses the same certificate for both server functions (accepting -# connections) and client functions (replicating from a master, establishing -# cluster bus connections, etc.). -# -# Sometimes certificates are issued with attributes that designate them as -# client-only or server-only certificates. In that case it may be desired to use -# different certificates for incoming (server) and outgoing (client) -# connections. To do that, use the following directives: -# -# tls-client-cert-file client.crt -# tls-client-key-file client.key -# -# If the key file is encrypted using a passphrase, it can be included here -# as well. -# -# tls-client-key-file-pass secret - -# Configure a DH parameters file to enable Diffie-Hellman (DH) key exchange, -# required by older versions of OpenSSL (<3.0). Newer versions do not require -# this configuration and recommend against it. -# -# tls-dh-params-file redis.dh - -# Configure a CA certificate(s) bundle or directory to authenticate TLS/SSL -# clients and peers. Redis requires an explicit configuration of at least one -# of these, and will not implicitly use the system wide configuration. -# -# tls-ca-cert-file ca.crt -# tls-ca-cert-dir /etc/ssl/certs - -# By default, clients (including replica servers) on a TLS port are required -# to authenticate using valid client side certificates. -# -# If "no" is specified, client certificates are not required and not accepted. -# If "optional" is specified, client certificates are accepted and must be -# valid if provided, but are not required. -# -# tls-auth-clients no -# tls-auth-clients optional - -# By default, a Redis replica does not attempt to establish a TLS connection -# with its master. -# -# Use the following directive to enable TLS on replication links. -# -# tls-replication yes - -# By default, the Redis Cluster bus uses a plain TCP connection. To enable -# TLS for the bus protocol, use the following directive: -# -# tls-cluster yes - -# By default, only TLSv1.2 and TLSv1.3 are enabled and it is highly recommended -# that older formally deprecated versions are kept disabled to reduce the attack surface. -# You can explicitly specify TLS versions to support. -# Allowed values are case insensitive and include "TLSv1", "TLSv1.1", "TLSv1.2", -# "TLSv1.3" (OpenSSL >= 1.1.1) or any combination. -# To enable only TLSv1.2 and TLSv1.3, use: -# -# tls-protocols "TLSv1.2 TLSv1.3" - -# Configure allowed ciphers. See the ciphers(1ssl) manpage for more information -# about the syntax of this string. -# -# Note: this configuration applies only to <= TLSv1.2. -# -# tls-ciphers DEFAULT:!MEDIUM - -# Configure allowed TLSv1.3 ciphersuites. See the ciphers(1ssl) manpage for more -# information about the syntax of this string, and specifically for TLSv1.3 -# ciphersuites. -# -# tls-ciphersuites TLS_CHACHA20_POLY1305_SHA256 - -# When choosing a cipher, use the server's preference instead of the client -# preference. By default, the server follows the client's preference. -# -# tls-prefer-server-ciphers yes - -# By default, TLS session caching is enabled to allow faster and less expensive -# reconnections by clients that support it. Use the following directive to disable -# caching. -# -# tls-session-caching no - -# Change the default number of TLS sessions cached. A zero value sets the cache -# to unlimited size. The default size is 20480. -# -# tls-session-cache-size 5000 - -# Change the default timeout of cached TLS sessions. The default timeout is 300 -# seconds. -# -# tls-session-cache-timeout 60 - -################################# GENERAL ##################################### - -# By default Redis does not run as a daemon. Use 'yes' if you need it. -# Note that Redis will write a pid file in /var/run/redis.pid when daemonized. -# When Redis is supervised by upstart or systemd, this parameter has no impact. -daemonize yes - -# If you run Redis from upstart or systemd, Redis can interact with your -# supervision tree. Options: -# supervised no - no supervision interaction -# supervised upstart - signal upstart by putting Redis into SIGSTOP mode -# requires "expect stop" in your upstart job config -# supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET -# on startup, and updating Redis status on a regular -# basis. -# supervised auto - detect upstart or systemd method based on -# UPSTART_JOB or NOTIFY_SOCKET environment variables -# Note: these supervision methods only signal "process is ready." -# They do not enable continuous pings back to your supervisor. -# -# The default is "no". To run under upstart/systemd, you can simply uncomment -# the line below: -# -# supervised auto - -# If a pid file is specified, Redis writes it where specified at startup -# and removes it at exit. -# -# When the server runs non daemonized, no pid file is created if none is -# specified in the configuration. When the server is daemonized, the pid file -# is used even if not specified, defaulting to "/var/run/redis.pid". -# -# Creating a pid file is best effort: if Redis is not able to create it -# nothing bad happens, the server will start and run normally. -# -# Note that on modern Linux systems "/run/redis.pid" is more conforming -# and should be used instead. -pidfile /run/redis/redis-server.pid - -# Specify the server verbosity level. -# This can be one of: -# debug (a lot of information, useful for development/testing) -# verbose (many rarely useful info, but not a mess like the debug level) -# notice (moderately verbose, what you want in production probably) -# warning (only very important / critical messages are logged) -loglevel notice - -# Specify the log file name. Also the empty string can be used to force -# Redis to log on the standard output. Note that if you use standard -# output for logging but daemonize, logs will be sent to /dev/null -logfile /var/log/redis/redis-server.log - -# To enable logging to the system logger, just set 'syslog-enabled' to yes, -# and optionally update the other syslog parameters to suit your needs. -# syslog-enabled no - -# Specify the syslog identity. -# syslog-ident redis - -# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7. -# syslog-facility local0 - -# To disable the built in crash log, which will possibly produce cleaner core -# dumps when they are needed, uncomment the following: -# -# crash-log-enabled no - -# To disable the fast memory check that's run as part of the crash log, which -# will possibly let redis terminate sooner, uncomment the following: -# -# crash-memcheck-enabled no - -# Set the number of databases. The default database is DB 0, you can select -# a different one on a per-connection basis using SELECT where -# dbid is a number between 0 and 'databases'-1 -databases 16 - -# By default Redis shows an ASCII art logo only when started to log to the -# standard output and if the standard output is a TTY and syslog logging is -# disabled. Basically this means that normally a logo is displayed only in -# interactive sessions. -# -# However it is possible to force the pre-4.0 behavior and always show a -# ASCII art logo in startup logs by setting the following option to yes. -always-show-logo no - -# By default, Redis modifies the process title (as seen in 'top' and 'ps') to -# provide some runtime information. It is possible to disable this and leave -# the process name as executed by setting the following to no. -set-proc-title yes - -# When changing the process title, Redis uses the following template to construct -# the modified title. -# -# Template variables are specified in curly brackets. The following variables are -# supported: -# -# {title} Name of process as executed if parent, or type of child process. -# {listen-addr} Bind address or '*' followed by TCP or TLS port listening on, or -# Unix socket if only that's available. -# {server-mode} Special mode, i.e. "[sentinel]" or "[cluster]". -# {port} TCP port listening on, or 0. -# {tls-port} TLS port listening on, or 0. -# {unixsocket} Unix domain socket listening on, or "". -# {config-file} Name of configuration file used. -# -proc-title-template "{title} {listen-addr} {server-mode}" - -################################ SNAPSHOTTING ################################ - -# Save the DB to disk. -# -# save [ ...] -# -# Redis will save the DB if the given number of seconds elapsed and it -# surpassed the given number of write operations against the DB. -# -# Snapshotting can be completely disabled with a single empty string argument -# as in following example: -# -# save "" -# -# Unless specified otherwise, by default Redis will save the DB: -# * After 3600 seconds (an hour) if at least 1 change was performed -# * After 300 seconds (5 minutes) if at least 100 changes were performed -# * After 60 seconds if at least 10000 changes were performed -# -# You can set these explicitly by uncommenting the following line. -# -# save 3600 1 300 100 60 10000 - -# By default Redis will stop accepting writes if RDB snapshots are enabled -# (at least one save point) and the latest background save failed. -# This will make the user aware (in a hard way) that data is not persisting -# on disk properly, otherwise chances are that no one will notice and some -# disaster will happen. -# -# If the background saving process will start working again Redis will -# automatically allow writes again. -# -# However if you have setup your proper monitoring of the Redis server -# and persistence, you may want to disable this feature so that Redis will -# continue to work as usual even if there are problems with disk, -# permissions, and so forth. -stop-writes-on-bgsave-error yes - -# Compress string objects using LZF when dump .rdb databases? -# By default compression is enabled as it's almost always a win. -# If you want to save some CPU in the saving child set it to 'no' but -# the dataset will likely be bigger if you have compressible values or keys. -rdbcompression yes - -# Since version 5 of RDB a CRC64 checksum is placed at the end of the file. -# This makes the format more resistant to corruption but there is a performance -# hit to pay (around 10%) when saving and loading RDB files, so you can disable it -# for maximum performances. -# -# RDB files created with checksum disabled have a checksum of zero that will -# tell the loading code to skip the check. -rdbchecksum yes - -# Enables or disables full sanitization checks for ziplist and listpack etc when -# loading an RDB or RESTORE payload. This reduces the chances of a assertion or -# crash later on while processing commands. -# Options: -# no - Never perform full sanitization -# yes - Always perform full sanitization -# clients - Perform full sanitization only for user connections. -# Excludes: RDB files, RESTORE commands received from the master -# connection, and client connections which have the -# skip-sanitize-payload ACL flag. -# The default should be 'clients' but since it currently affects cluster -# resharding via MIGRATE, it is temporarily set to 'no' by default. -# -# sanitize-dump-payload no - -# The filename where to dump the DB -dbfilename dump.rdb - -# Remove RDB files used by replication in instances without persistence -# enabled. By default this option is disabled, however there are environments -# where for regulations or other security concerns, RDB files persisted on -# disk by masters in order to feed replicas, or stored on disk by replicas -# in order to load them for the initial synchronization, should be deleted -# ASAP. Note that this option ONLY WORKS in instances that have both AOF -# and RDB persistence disabled, otherwise is completely ignored. -# -# An alternative (and sometimes better) way to obtain the same effect is -# to use diskless replication on both master and replicas instances. However -# in the case of replicas, diskless is not always an option. -rdb-del-sync-files no - -# The working directory. -# -# The DB will be written inside this directory, with the filename specified -# above using the 'dbfilename' configuration directive. -# -# The Append Only File will also be created inside this directory. -# -# Note that you must specify a directory here, not a file name. -dir /var/lib/redis - -################################# REPLICATION ################################# - -# Master-Replica replication. Use replicaof to make a Redis instance a copy of -# another Redis server. A few things to understand ASAP about Redis replication. -# -# +------------------+ +---------------+ -# | Master | ---> | Replica | -# | (receive writes) | | (exact copy) | -# +------------------+ +---------------+ -# -# 1) Redis replication is asynchronous, but you can configure a master to -# stop accepting writes if it appears to be not connected with at least -# a given number of replicas. -# 2) Redis replicas are able to perform a partial resynchronization with the -# master if the replication link is lost for a relatively small amount of -# time. You may want to configure the replication backlog size (see the next -# sections of this file) with a sensible value depending on your needs. -# 3) Replication is automatic and does not need user intervention. After a -# network partition replicas automatically try to reconnect to masters -# and resynchronize with them. -# -# replicaof - -# If the master is password protected (using the "requirepass" configuration -# directive below) it is possible to tell the replica to authenticate before -# starting the replication synchronization process, otherwise the master will -# refuse the replica request. -# -# masterauth -# -# However this is not enough if you are using Redis ACLs (for Redis version -# 6 or greater), and the default user is not capable of running the PSYNC -# command and/or other commands needed for replication. In this case it's -# better to configure a special user to use with replication, and specify the -# masteruser configuration as such: -# -# masteruser -# -# When masteruser is specified, the replica will authenticate against its -# master using the new AUTH form: AUTH . - -# When a replica loses its connection with the master, or when the replication -# is still in progress, the replica can act in two different ways: -# -# 1) if replica-serve-stale-data is set to 'yes' (the default) the replica will -# still reply to client requests, possibly with out of date data, or the -# data set may just be empty if this is the first synchronization. -# -# 2) If replica-serve-stale-data is set to 'no' the replica will reply with error -# "MASTERDOWN Link with MASTER is down and replica-serve-stale-data is set to 'no'" -# to all data access commands, excluding commands such as: -# INFO, REPLICAOF, AUTH, SHUTDOWN, REPLCONF, ROLE, CONFIG, SUBSCRIBE, -# UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBLISH, PUBSUB, COMMAND, POST, -# HOST and LATENCY. -# -replica-serve-stale-data yes - -# You can configure a replica instance to accept writes or not. Writing against -# a replica instance may be useful to store some ephemeral data (because data -# written on a replica will be easily deleted after resync with the master) but -# may also cause problems if clients are writing to it because of a -# misconfiguration. -# -# Since Redis 2.6 by default replicas are read-only. -# -# Note: read only replicas are not designed to be exposed to untrusted clients -# on the internet. It's just a protection layer against misuse of the instance. -# Still a read only replica exports by default all the administrative commands -# such as CONFIG, DEBUG, and so forth. To a limited extent you can improve -# security of read only replicas using 'rename-command' to shadow all the -# administrative / dangerous commands. -replica-read-only yes - -# Replication SYNC strategy: disk or socket. -# -# New replicas and reconnecting replicas that are not able to continue the -# replication process just receiving differences, need to do what is called a -# "full synchronization". An RDB file is transmitted from the master to the -# replicas. -# -# The transmission can happen in two different ways: -# -# 1) Disk-backed: The Redis master creates a new process that writes the RDB -# file on disk. Later the file is transferred by the parent -# process to the replicas incrementally. -# 2) Diskless: The Redis master creates a new process that directly writes the -# RDB file to replica sockets, without touching the disk at all. -# -# With disk-backed replication, while the RDB file is generated, more replicas -# can be queued and served with the RDB file as soon as the current child -# producing the RDB file finishes its work. With diskless replication instead -# once the transfer starts, new replicas arriving will be queued and a new -# transfer will start when the current one terminates. -# -# When diskless replication is used, the master waits a configurable amount of -# time (in seconds) before starting the transfer in the hope that multiple -# replicas will arrive and the transfer can be parallelized. -# -# With slow disks and fast (large bandwidth) networks, diskless replication -# works better. -repl-diskless-sync yes - -# When diskless replication is enabled, it is possible to configure the delay -# the server waits in order to spawn the child that transfers the RDB via socket -# to the replicas. -# -# This is important since once the transfer starts, it is not possible to serve -# new replicas arriving, that will be queued for the next RDB transfer, so the -# server waits a delay in order to let more replicas arrive. -# -# The delay is specified in seconds, and by default is 5 seconds. To disable -# it entirely just set it to 0 seconds and the transfer will start ASAP. -repl-diskless-sync-delay 5 - -# When diskless replication is enabled with a delay, it is possible to let -# the replication start before the maximum delay is reached if the maximum -# number of replicas expected have connected. Default of 0 means that the -# maximum is not defined and Redis will wait the full delay. -repl-diskless-sync-max-replicas 0 - -# ----------------------------------------------------------------------------- -# WARNING: RDB diskless load is experimental. Since in this setup the replica -# does not immediately store an RDB on disk, it may cause data loss during -# failovers. RDB diskless load + Redis modules not handling I/O reads may also -# cause Redis to abort in case of I/O errors during the initial synchronization -# stage with the master. Use only if you know what you are doing. -# ----------------------------------------------------------------------------- -# -# Replica can load the RDB it reads from the replication link directly from the -# socket, or store the RDB to a file and read that file after it was completely -# received from the master. -# -# In many cases the disk is slower than the network, and storing and loading -# the RDB file may increase replication time (and even increase the master's -# Copy on Write memory and replica buffers). -# However, parsing the RDB file directly from the socket may mean that we have -# to flush the contents of the current database before the full rdb was -# received. For this reason we have the following options: -# -# "disabled" - Don't use diskless load (store the rdb file to the disk first) -# "on-empty-db" - Use diskless load only when it is completely safe. -# "swapdb" - Keep current db contents in RAM while parsing the data directly -# from the socket. Replicas in this mode can keep serving current -# data set while replication is in progress, except for cases where -# they can't recognize master as having a data set from same -# replication history. -# Note that this requires sufficient memory, if you don't have it, -# you risk an OOM kill. -repl-diskless-load disabled - -# Master send PINGs to its replicas in a predefined interval. It's possible to -# change this interval with the repl_ping_replica_period option. The default -# value is 10 seconds. -# -# repl-ping-replica-period 10 - -# The following option sets the replication timeout for: -# -# 1) Bulk transfer I/O during SYNC, from the point of view of replica. -# 2) Master timeout from the point of view of replicas (data, pings). -# 3) Replica timeout from the point of view of masters (REPLCONF ACK pings). -# -# It is important to make sure that this value is greater than the value -# specified for repl-ping-replica-period otherwise a timeout will be detected -# every time there is low traffic between the master and the replica. The default -# value is 60 seconds. -# -# repl-timeout 60 - -# Disable TCP_NODELAY on the replica socket after SYNC? -# -# If you select "yes" Redis will use a smaller number of TCP packets and -# less bandwidth to send data to replicas. But this can add a delay for -# the data to appear on the replica side, up to 40 milliseconds with -# Linux kernels using a default configuration. -# -# If you select "no" the delay for data to appear on the replica side will -# be reduced but more bandwidth will be used for replication. -# -# By default we optimize for low latency, but in very high traffic conditions -# or when the master and replicas are many hops away, turning this to "yes" may -# be a good idea. -repl-disable-tcp-nodelay no - -# Set the replication backlog size. The backlog is a buffer that accumulates -# replica data when replicas are disconnected for some time, so that when a -# replica wants to reconnect again, often a full resync is not needed, but a -# partial resync is enough, just passing the portion of data the replica -# missed while disconnected. -# -# The bigger the replication backlog, the longer the replica can endure the -# disconnect and later be able to perform a partial resynchronization. -# -# The backlog is only allocated if there is at least one replica connected. -# -# repl-backlog-size 1mb - -# After a master has no connected replicas for some time, the backlog will be -# freed. The following option configures the amount of seconds that need to -# elapse, starting from the time the last replica disconnected, for the backlog -# buffer to be freed. -# -# Note that replicas never free the backlog for timeout, since they may be -# promoted to masters later, and should be able to correctly "partially -# resynchronize" with other replicas: hence they should always accumulate backlog. -# -# A value of 0 means to never release the backlog. -# -# repl-backlog-ttl 3600 - -# The replica priority is an integer number published by Redis in the INFO -# output. It is used by Redis Sentinel in order to select a replica to promote -# into a master if the master is no longer working correctly. -# -# A replica with a low priority number is considered better for promotion, so -# for instance if there are three replicas with priority 10, 100, 25 Sentinel -# will pick the one with priority 10, that is the lowest. -# -# However a special priority of 0 marks the replica as not able to perform the -# role of master, so a replica with priority of 0 will never be selected by -# Redis Sentinel for promotion. -# -# By default the priority is 100. -replica-priority 100 - -# The propagation error behavior controls how Redis will behave when it is -# unable to handle a command being processed in the replication stream from a master -# or processed while reading from an AOF file. Errors that occur during propagation -# are unexpected, and can cause data inconsistency. However, there are edge cases -# in earlier versions of Redis where it was possible for the server to replicate or persist -# commands that would fail on future versions. For this reason the default behavior -# is to ignore such errors and continue processing commands. -# -# If an application wants to ensure there is no data divergence, this configuration -# should be set to 'panic' instead. The value can also be set to 'panic-on-replicas' -# to only panic when a replica encounters an error on the replication stream. One of -# these two panic values will become the default value in the future once there are -# sufficient safety mechanisms in place to prevent false positive crashes. -# -# propagation-error-behavior ignore - -# Replica ignore disk write errors controls the behavior of a replica when it is -# unable to persist a write command received from its master to disk. By default, -# this configuration is set to 'no' and will crash the replica in this condition. -# It is not recommended to change this default, however in order to be compatible -# with older versions of Redis this config can be toggled to 'yes' which will just -# log a warning and execute the write command it got from the master. -# -# replica-ignore-disk-write-errors no - -# ----------------------------------------------------------------------------- -# By default, Redis Sentinel includes all replicas in its reports. A replica -# can be excluded from Redis Sentinel's announcements. An unannounced replica -# will be ignored by the 'sentinel replicas ' command and won't be -# exposed to Redis Sentinel's clients. -# -# This option does not change the behavior of replica-priority. Even with -# replica-announced set to 'no', the replica can be promoted to master. To -# prevent this behavior, set replica-priority to 0. -# -# replica-announced yes - -# It is possible for a master to stop accepting writes if there are less than -# N replicas connected, having a lag less or equal than M seconds. -# -# The N replicas need to be in "online" state. -# -# The lag in seconds, that must be <= the specified value, is calculated from -# the last ping received from the replica, that is usually sent every second. -# -# This option does not GUARANTEE that N replicas will accept the write, but -# will limit the window of exposure for lost writes in case not enough replicas -# are available, to the specified number of seconds. -# -# For example to require at least 3 replicas with a lag <= 10 seconds use: -# -# min-replicas-to-write 3 -# min-replicas-max-lag 10 -# -# Setting one or the other to 0 disables the feature. -# -# By default min-replicas-to-write is set to 0 (feature disabled) and -# min-replicas-max-lag is set to 10. - -# A Redis master is able to list the address and port of the attached -# replicas in different ways. For example the "INFO replication" section -# offers this information, which is used, among other tools, by -# Redis Sentinel in order to discover replica instances. -# Another place where this info is available is in the output of the -# "ROLE" command of a master. -# -# The listed IP address and port normally reported by a replica is -# obtained in the following way: -# -# IP: The address is auto detected by checking the peer address -# of the socket used by the replica to connect with the master. -# -# Port: The port is communicated by the replica during the replication -# handshake, and is normally the port that the replica is using to -# listen for connections. -# -# However when port forwarding or Network Address Translation (NAT) is -# used, the replica may actually be reachable via different IP and port -# pairs. The following two options can be used by a replica in order to -# report to its master a specific set of IP and port, so that both INFO -# and ROLE will report those values. -# -# There is no need to use both the options if you need to override just -# the port or the IP address. -# -# replica-announce-ip 5.5.5.5 -# replica-announce-port 1234 - -############################### KEYS TRACKING ################################# - -# Redis implements server assisted support for client side caching of values. -# This is implemented using an invalidation table that remembers, using -# a radix key indexed by key name, what clients have which keys. In turn -# this is used in order to send invalidation messages to clients. Please -# check this page to understand more about the feature: -# -# https://redis.io/topics/client-side-caching -# -# When tracking is enabled for a client, all the read only queries are assumed -# to be cached: this will force Redis to store information in the invalidation -# table. When keys are modified, such information is flushed away, and -# invalidation messages are sent to the clients. However if the workload is -# heavily dominated by reads, Redis could use more and more memory in order -# to track the keys fetched by many clients. -# -# For this reason it is possible to configure a maximum fill value for the -# invalidation table. By default it is set to 1M of keys, and once this limit -# is reached, Redis will start to evict keys in the invalidation table -# even if they were not modified, just to reclaim memory: this will in turn -# force the clients to invalidate the cached values. Basically the table -# maximum size is a trade off between the memory you want to spend server -# side to track information about who cached what, and the ability of clients -# to retain cached objects in memory. -# -# If you set the value to 0, it means there are no limits, and Redis will -# retain as many keys as needed in the invalidation table. -# In the "stats" INFO section, you can find information about the number of -# keys in the invalidation table at every given moment. -# -# Note: when key tracking is used in broadcasting mode, no memory is used -# in the server side so this setting is useless. -# -# tracking-table-max-keys 1000000 - -################################## SECURITY ################################### - -# Warning: since Redis is pretty fast, an outside user can try up to -# 1 million passwords per second against a modern box. This means that you -# should use very strong passwords, otherwise they will be very easy to break. -# Note that because the password is really a shared secret between the client -# and the server, and should not be memorized by any human, the password -# can be easily a long string from /dev/urandom or whatever, so by using a -# long and unguessable password no brute force attack will be possible. - -# Redis ACL users are defined in the following format: -# -# user ... acl rules ... -# -# For example: -# -# user worker +@list +@connection ~jobs:* on >ffa9203c493aa99 -# -# The special username "default" is used for new connections. If this user -# has the "nopass" rule, then new connections will be immediately authenticated -# as the "default" user without the need of any password provided via the -# AUTH command. Otherwise if the "default" user is not flagged with "nopass" -# the connections will start in not authenticated state, and will require -# AUTH (or the HELLO command AUTH option) in order to be authenticated and -# start to work. -# -# The ACL rules that describe what a user can do are the following: -# -# on Enable the user: it is possible to authenticate as this user. -# off Disable the user: it's no longer possible to authenticate -# with this user, however the already authenticated connections -# will still work. -# skip-sanitize-payload RESTORE dump-payload sanitization is skipped. -# sanitize-payload RESTORE dump-payload is sanitized (default). -# + Allow the execution of that command. -# May be used with `|` for allowing subcommands (e.g "+config|get") -# - Disallow the execution of that command. -# May be used with `|` for blocking subcommands (e.g "-config|set") -# +@ Allow the execution of all the commands in such category -# with valid categories are like @admin, @set, @sortedset, ... -# and so forth, see the full list in the server.c file where -# the Redis command table is described and defined. -# The special category @all means all the commands, but currently -# present in the server, and that will be loaded in the future -# via modules. -# +|first-arg Allow a specific first argument of an otherwise -# disabled command. It is only supported on commands with -# no sub-commands, and is not allowed as negative form -# like -SELECT|1, only additive starting with "+". This -# feature is deprecated and may be removed in the future. -# allcommands Alias for +@all. Note that it implies the ability to execute -# all the future commands loaded via the modules system. -# nocommands Alias for -@all. -# ~ Add a pattern of keys that can be mentioned as part of -# commands. For instance ~* allows all the keys. The pattern -# is a glob-style pattern like the one of KEYS. -# It is possible to specify multiple patterns. -# %R~ Add key read pattern that specifies which keys can be read -# from. -# %W~ Add key write pattern that specifies which keys can be -# written to. -# allkeys Alias for ~* -# resetkeys Flush the list of allowed keys patterns. -# & Add a glob-style pattern of Pub/Sub channels that can be -# accessed by the user. It is possible to specify multiple channel -# patterns. -# allchannels Alias for &* -# resetchannels Flush the list of allowed channel patterns. -# > Add this password to the list of valid password for the user. -# For example >mypass will add "mypass" to the list. -# This directive clears the "nopass" flag (see later). -# < Remove this password from the list of valid passwords. -# nopass All the set passwords of the user are removed, and the user -# is flagged as requiring no password: it means that every -# password will work against this user. If this directive is -# used for the default user, every new connection will be -# immediately authenticated with the default user without -# any explicit AUTH command required. Note that the "resetpass" -# directive will clear this condition. -# resetpass Flush the list of allowed passwords. Moreover removes the -# "nopass" status. After "resetpass" the user has no associated -# passwords and there is no way to authenticate without adding -# some password (or setting it as "nopass" later). -# reset Performs the following actions: resetpass, resetkeys, off, -# -@all. The user returns to the same state it has immediately -# after its creation. -# () Create a new selector with the options specified within the -# parentheses and attach it to the user. Each option should be -# space separated. The first character must be ( and the last -# character must be ). -# clearselectors Remove all of the currently attached selectors. -# Note this does not change the "root" user permissions, -# which are the permissions directly applied onto the -# user (outside the parentheses). -# -# ACL rules can be specified in any order: for instance you can start with -# passwords, then flags, or key patterns. However note that the additive -# and subtractive rules will CHANGE MEANING depending on the ordering. -# For instance see the following example: -# -# user alice on +@all -DEBUG ~* >somepassword -# -# This will allow "alice" to use all the commands with the exception of the -# DEBUG command, since +@all added all the commands to the set of the commands -# alice can use, and later DEBUG was removed. However if we invert the order -# of two ACL rules the result will be different: -# -# user alice on -DEBUG +@all ~* >somepassword -# -# Now DEBUG was removed when alice had yet no commands in the set of allowed -# commands, later all the commands are added, so the user will be able to -# execute everything. -# -# Basically ACL rules are processed left-to-right. -# -# The following is a list of command categories and their meanings: -# * keyspace - Writing or reading from keys, databases, or their metadata -# in a type agnostic way. Includes DEL, RESTORE, DUMP, RENAME, EXISTS, DBSIZE, -# KEYS, EXPIRE, TTL, FLUSHALL, etc. Commands that may modify the keyspace, -# key or metadata will also have `write` category. Commands that only read -# the keyspace, key or metadata will have the `read` category. -# * read - Reading from keys (values or metadata). Note that commands that don't -# interact with keys, will not have either `read` or `write`. -# * write - Writing to keys (values or metadata) -# * admin - Administrative commands. Normal applications will never need to use -# these. Includes REPLICAOF, CONFIG, DEBUG, SAVE, MONITOR, ACL, SHUTDOWN, etc. -# * dangerous - Potentially dangerous (each should be considered with care for -# various reasons). This includes FLUSHALL, MIGRATE, RESTORE, SORT, KEYS, -# CLIENT, DEBUG, INFO, CONFIG, SAVE, REPLICAOF, etc. -# * connection - Commands affecting the connection or other connections. -# This includes AUTH, SELECT, COMMAND, CLIENT, ECHO, PING, etc. -# * blocking - Potentially blocking the connection until released by another -# command. -# * fast - Fast O(1) commands. May loop on the number of arguments, but not the -# number of elements in the key. -# * slow - All commands that are not Fast. -# * pubsub - PUBLISH / SUBSCRIBE related -# * transaction - WATCH / MULTI / EXEC related commands. -# * scripting - Scripting related. -# * set - Data type: sets related. -# * sortedset - Data type: zsets related. -# * list - Data type: lists related. -# * hash - Data type: hashes related. -# * string - Data type: strings related. -# * bitmap - Data type: bitmaps related. -# * hyperloglog - Data type: hyperloglog related. -# * geo - Data type: geo related. -# * stream - Data type: streams related. -# -# For more information about ACL configuration please refer to -# the Redis web site at https://redis.io/topics/acl - -# ACL LOG -# -# The ACL Log tracks failed commands and authentication events associated -# with ACLs. The ACL Log is useful to troubleshoot failed commands blocked -# by ACLs. The ACL Log is stored in memory. You can reclaim memory with -# ACL LOG RESET. Define the maximum entry length of the ACL Log below. -acllog-max-len 128 - -# Using an external ACL file -# -# Instead of configuring users here in this file, it is possible to use -# a stand-alone file just listing users. The two methods cannot be mixed: -# if you configure users here and at the same time you activate the external -# ACL file, the server will refuse to start. -# -# The format of the external ACL user file is exactly the same as the -# format that is used inside redis.conf to describe users. -# -# aclfile /etc/redis/users.acl - -# IMPORTANT NOTE: starting with Redis 6 "requirepass" is just a compatibility -# layer on top of the new ACL system. The option effect will be just setting -# the password for the default user. Clients will still authenticate using -# AUTH as usually, or more explicitly with AUTH default -# if they follow the new protocol: both will work. -# -# The requirepass is not compatible with aclfile option and the ACL LOAD -# command, these will cause requirepass to be ignored. -# -# requirepass foobared - -# New users are initialized with restrictive permissions by default, via the -# equivalent of this ACL rule 'off resetkeys -@all'. Starting with Redis 6.2, it -# is possible to manage access to Pub/Sub channels with ACL rules as well. The -# default Pub/Sub channels permission if new users is controlled by the -# acl-pubsub-default configuration directive, which accepts one of these values: -# -# allchannels: grants access to all Pub/Sub channels -# resetchannels: revokes access to all Pub/Sub channels -# -# From Redis 7.0, acl-pubsub-default defaults to 'resetchannels' permission. -# -# acl-pubsub-default resetchannels - -# Command renaming (DEPRECATED). -# -# ------------------------------------------------------------------------ -# WARNING: avoid using this option if possible. Instead use ACLs to remove -# commands from the default user, and put them only in some admin user you -# create for administrative purposes. -# ------------------------------------------------------------------------ -# -# It is possible to change the name of dangerous commands in a shared -# environment. For instance the CONFIG command may be renamed into something -# hard to guess so that it will still be available for internal-use tools -# but not available for general clients. -# -# Example: -# -# rename-command CONFIG b840fc02d524045429941cc15f59e41cb7be6c52 -# -# It is also possible to completely kill a command by renaming it into -# an empty string: -# -# rename-command CONFIG "" -# -# Please note that changing the name of commands that are logged into the -# AOF file or transmitted to replicas may cause problems. - -################################### CLIENTS #################################### - -# Set the max number of connected clients at the same time. By default -# this limit is set to 10000 clients, however if the Redis server is not -# able to configure the process file limit to allow for the specified limit -# the max number of allowed clients is set to the current file limit -# minus 32 (as Redis reserves a few file descriptors for internal uses). -# -# Once the limit is reached Redis will close all the new connections sending -# an error 'max number of clients reached'. -# -# IMPORTANT: When Redis Cluster is used, the max number of connections is also -# shared with the cluster bus: every node in the cluster will use two -# connections, one incoming and another outgoing. It is important to size the -# limit accordingly in case of very large clusters. -# -# maxclients 10000 - -############################## MEMORY MANAGEMENT ################################ - -# Set a memory usage limit to the specified amount of bytes. -# When the memory limit is reached Redis will try to remove keys -# according to the eviction policy selected (see maxmemory-policy). -# -# If Redis can't remove keys according to the policy, or if the policy is -# set to 'noeviction', Redis will start to reply with errors to commands -# that would use more memory, like SET, LPUSH, and so on, and will continue -# to reply to read-only commands like GET. -# -# This option is usually useful when using Redis as an LRU or LFU cache, or to -# set a hard memory limit for an instance (using the 'noeviction' policy). -# -# WARNING: If you have replicas attached to an instance with maxmemory on, -# the size of the output buffers needed to feed the replicas are subtracted -# from the used memory count, so that network problems / resyncs will -# not trigger a loop where keys are evicted, and in turn the output -# buffer of replicas is full with DELs of keys evicted triggering the deletion -# of more keys, and so forth until the database is completely emptied. -# -# In short... if you have replicas attached it is suggested that you set a lower -# limit for maxmemory so that there is some free RAM on the system for replica -# output buffers (but this is not needed if the policy is 'noeviction'). -# -maxmemory 200mb - -# MAXMEMORY POLICY: how Redis will select what to remove when maxmemory -# is reached. You can select one from the following behaviors: -# -# volatile-lru -> Evict using approximated LRU, only keys with an expire set. -# allkeys-lru -> Evict any key using approximated LRU. -# volatile-lfu -> Evict using approximated LFU, only keys with an expire set. -# allkeys-lfu -> Evict any key using approximated LFU. -# volatile-random -> Remove a random key having an expire set. -# allkeys-random -> Remove a random key, any key. -# volatile-ttl -> Remove the key with the nearest expire time (minor TTL) -# noeviction -> Don't evict anything, just return an error on write operations. -# -# LRU means Least Recently Used -# LFU means Least Frequently Used -# -# Both LRU, LFU and volatile-ttl are implemented using approximated -# randomized algorithms. -# -# Note: with any of the above policies, when there are no suitable keys for -# eviction, Redis will return an error on write operations that require -# more memory. These are usually commands that create new keys, add data or -# modify existing keys. A few examples are: SET, INCR, HSET, LPUSH, SUNIONSTORE, -# SORT (due to the STORE argument), and EXEC (if the transaction includes any -# command that requires memory). -# -# The default is: -# -# maxmemory-policy noeviction - -# LRU, LFU and minimal TTL algorithms are not precise algorithms but approximated -# algorithms (in order to save memory), so you can tune it for speed or -# accuracy. By default Redis will check five keys and pick the one that was -# used least recently, you can change the sample size using the following -# configuration directive. -# -# The default of 5 produces good enough results. 10 Approximates very closely -# true LRU but costs more CPU. 3 is faster but not very accurate. -# -# maxmemory-samples 5 - -# Eviction processing is designed to function well with the default setting. -# If there is an unusually large amount of write traffic, this value may need to -# be increased. Decreasing this value may reduce latency at the risk of -# eviction processing effectiveness -# 0 = minimum latency, 10 = default, 100 = process without regard to latency -# -# maxmemory-eviction-tenacity 10 - -# Starting from Redis 5, by default a replica will ignore its maxmemory setting -# (unless it is promoted to master after a failover or manually). It means -# that the eviction of keys will be just handled by the master, sending the -# DEL commands to the replica as keys evict in the master side. -# -# This behavior ensures that masters and replicas stay consistent, and is usually -# what you want, however if your replica is writable, or you want the replica -# to have a different memory setting, and you are sure all the writes performed -# to the replica are idempotent, then you may change this default (but be sure -# to understand what you are doing). -# -# Note that since the replica by default does not evict, it may end using more -# memory than the one set via maxmemory (there are certain buffers that may -# be larger on the replica, or data structures may sometimes take more memory -# and so forth). So make sure you monitor your replicas and make sure they -# have enough memory to never hit a real out-of-memory condition before the -# master hits the configured maxmemory setting. -# -# replica-ignore-maxmemory yes - -# Redis reclaims expired keys in two ways: upon access when those keys are -# found to be expired, and also in background, in what is called the -# "active expire key". The key space is slowly and interactively scanned -# looking for expired keys to reclaim, so that it is possible to free memory -# of keys that are expired and will never be accessed again in a short time. -# -# The default effort of the expire cycle will try to avoid having more than -# ten percent of expired keys still in memory, and will try to avoid consuming -# more than 25% of total memory and to add latency to the system. However -# it is possible to increase the expire "effort" that is normally set to -# "1", to a greater value, up to the value "10". At its maximum value the -# system will use more CPU, longer cycles (and technically may introduce -# more latency), and will tolerate less already expired keys still present -# in the system. It's a tradeoff between memory, CPU and latency. -# -# active-expire-effort 1 - -############################# LAZY FREEING #################################### - -# Redis has two primitives to delete keys. One is called DEL and is a blocking -# deletion of the object. It means that the server stops processing new commands -# in order to reclaim all the memory associated with an object in a synchronous -# way. If the key deleted is associated with a small object, the time needed -# in order to execute the DEL command is very small and comparable to most other -# O(1) or O(log_N) commands in Redis. However if the key is associated with an -# aggregated value containing millions of elements, the server can block for -# a long time (even seconds) in order to complete the operation. -# -# For the above reasons Redis also offers non blocking deletion primitives -# such as UNLINK (non blocking DEL) and the ASYNC option of FLUSHALL and -# FLUSHDB commands, in order to reclaim memory in background. Those commands -# are executed in constant time. Another thread will incrementally free the -# object in the background as fast as possible. -# -# DEL, UNLINK and ASYNC option of FLUSHALL and FLUSHDB are user-controlled. -# It's up to the design of the application to understand when it is a good -# idea to use one or the other. However the Redis server sometimes has to -# delete keys or flush the whole database as a side effect of other operations. -# Specifically Redis deletes objects independently of a user call in the -# following scenarios: -# -# 1) On eviction, because of the maxmemory and maxmemory policy configurations, -# in order to make room for new data, without going over the specified -# memory limit. -# 2) Because of expire: when a key with an associated time to live (see the -# EXPIRE command) must be deleted from memory. -# 3) Because of a side effect of a command that stores data on a key that may -# already exist. For example the RENAME command may delete the old key -# content when it is replaced with another one. Similarly SUNIONSTORE -# or SORT with STORE option may delete existing keys. The SET command -# itself removes any old content of the specified key in order to replace -# it with the specified string. -# 4) During replication, when a replica performs a full resynchronization with -# its master, the content of the whole database is removed in order to -# load the RDB file just transferred. -# -# In all the above cases the default is to delete objects in a blocking way, -# like if DEL was called. However you can configure each case specifically -# in order to instead release memory in a non-blocking way like if UNLINK -# was called, using the following configuration directives. - -lazyfree-lazy-eviction no -lazyfree-lazy-expire no -lazyfree-lazy-server-del no -replica-lazy-flush no - -# It is also possible, for the case when to replace the user code DEL calls -# with UNLINK calls is not easy, to modify the default behavior of the DEL -# command to act exactly like UNLINK, using the following configuration -# directive: - -lazyfree-lazy-user-del no - -# FLUSHDB, FLUSHALL, SCRIPT FLUSH and FUNCTION FLUSH support both asynchronous and synchronous -# deletion, which can be controlled by passing the [SYNC|ASYNC] flags into the -# commands. When neither flag is passed, this directive will be used to determine -# if the data should be deleted asynchronously. - -lazyfree-lazy-user-flush no - -################################ THREADED I/O ################################# - -# Redis is mostly single threaded, however there are certain threaded -# operations such as UNLINK, slow I/O accesses and other things that are -# performed on side threads. -# -# Now it is also possible to handle Redis clients socket reads and writes -# in different I/O threads. Since especially writing is so slow, normally -# Redis users use pipelining in order to speed up the Redis performances per -# core, and spawn multiple instances in order to scale more. Using I/O -# threads it is possible to easily speedup two times Redis without resorting -# to pipelining nor sharding of the instance. -# -# By default threading is disabled, we suggest enabling it only in machines -# that have at least 4 or more cores, leaving at least one spare core. -# Using more than 8 threads is unlikely to help much. We also recommend using -# threaded I/O only if you actually have performance problems, with Redis -# instances being able to use a quite big percentage of CPU time, otherwise -# there is no point in using this feature. -# -# So for instance if you have a four cores boxes, try to use 2 or 3 I/O -# threads, if you have a 8 cores, try to use 6 threads. In order to -# enable I/O threads use the following configuration directive: -# -# io-threads 4 -# -# Setting io-threads to 1 will just use the main thread as usual. -# When I/O threads are enabled, we only use threads for writes, that is -# to thread the write(2) syscall and transfer the client buffers to the -# socket. However it is also possible to enable threading of reads and -# protocol parsing using the following configuration directive, by setting -# it to yes: -# -# io-threads-do-reads no -# -# Usually threading reads doesn't help much. -# -# NOTE 1: This configuration directive cannot be changed at runtime via -# CONFIG SET. Also, this feature currently does not work when SSL is -# enabled. -# -# NOTE 2: If you want to test the Redis speedup using redis-benchmark, make -# sure you also run the benchmark itself in threaded mode, using the -# --threads option to match the number of Redis threads, otherwise you'll not -# be able to notice the improvements. - -############################ KERNEL OOM CONTROL ############################## - -# On Linux, it is possible to hint the kernel OOM killer on what processes -# should be killed first when out of memory. -# -# Enabling this feature makes Redis actively control the oom_score_adj value -# for all its processes, depending on their role. The default scores will -# attempt to have background child processes killed before all others, and -# replicas killed before masters. -# -# Redis supports these options: -# -# no: Don't make changes to oom-score-adj (default). -# yes: Alias to "relative" see below. -# absolute: Values in oom-score-adj-values are written as is to the kernel. -# relative: Values are used relative to the initial value of oom_score_adj when -# the server starts and are then clamped to a range of -1000 to 1000. -# Because typically the initial value is 0, they will often match the -# absolute values. -oom-score-adj no - -# When oom-score-adj is used, this directive controls the specific values used -# for master, replica and background child processes. Values range -2000 to -# 2000 (higher means more likely to be killed). -# -# Unprivileged processes (not root, and without CAP_SYS_RESOURCE capabilities) -# can freely increase their value, but not decrease it below its initial -# settings. This means that setting oom-score-adj to "relative" and setting the -# oom-score-adj-values to positive values will always succeed. -oom-score-adj-values 0 200 800 - - -#################### KERNEL transparent hugepage CONTROL ###################### - -# Usually the kernel Transparent Huge Pages control is set to "madvise" or -# or "never" by default (/sys/kernel/mm/transparent_hugepage/enabled), in which -# case this config has no effect. On systems in which it is set to "always", -# redis will attempt to disable it specifically for the redis process in order -# to avoid latency problems specifically with fork(2) and CoW. -# If for some reason you prefer to keep it enabled, you can set this config to -# "no" and the kernel global to "always". - -disable-thp yes - -############################## APPEND ONLY MODE ############################### - -# By default Redis asynchronously dumps the dataset on disk. This mode is -# good enough in many applications, but an issue with the Redis process or -# a power outage may result into a few minutes of writes lost (depending on -# the configured save points). -# -# The Append Only File is an alternative persistence mode that provides -# much better durability. For instance using the default data fsync policy -# (see later in the config file) Redis can lose just one second of writes in a -# dramatic event like a server power outage, or a single write if something -# wrong with the Redis process itself happens, but the operating system is -# still running correctly. -# -# AOF and RDB persistence can be enabled at the same time without problems. -# If the AOF is enabled on startup Redis will load the AOF, that is the file -# with the better durability guarantees. -# -# Please check https://redis.io/topics/persistence for more information. - -appendonly no - -# The base name of the append only file. -# -# Redis 7 and newer use a set of append-only files to persist the dataset -# and changes applied to it. There are two basic types of files in use: -# -# - Base files, which are a snapshot representing the complete state of the -# dataset at the time the file was created. Base files can be either in -# the form of RDB (binary serialized) or AOF (textual commands). -# - Incremental files, which contain additional commands that were applied -# to the dataset following the previous file. -# -# In addition, manifest files are used to track the files and the order in -# which they were created and should be applied. -# -# Append-only file names are created by Redis following a specific pattern. -# The file name's prefix is based on the 'appendfilename' configuration -# parameter, followed by additional information about the sequence and type. -# -# For example, if appendfilename is set to appendonly.aof, the following file -# names could be derived: -# -# - appendonly.aof.1.base.rdb as a base file. -# - appendonly.aof.1.incr.aof, appendonly.aof.2.incr.aof as incremental files. -# - appendonly.aof.manifest as a manifest file. - -appendfilename "appendonly.aof" - -# For convenience, Redis stores all persistent append-only files in a dedicated -# directory. The name of the directory is determined by the appenddirname -# configuration parameter. - -appenddirname "appendonlydir" - -# The fsync() call tells the Operating System to actually write data on disk -# instead of waiting for more data in the output buffer. Some OS will really flush -# data on disk, some other OS will just try to do it ASAP. -# -# Redis supports three different modes: -# -# no: don't fsync, just let the OS flush the data when it wants. Faster. -# always: fsync after every write to the append only log. Slow, Safest. -# everysec: fsync only one time every second. Compromise. -# -# The default is "everysec", as that's usually the right compromise between -# speed and data safety. It's up to you to understand if you can relax this to -# "no" that will let the operating system flush the output buffer when -# it wants, for better performances (but if you can live with the idea of -# some data loss consider the default persistence mode that's snapshotting), -# or on the contrary, use "always" that's very slow but a bit safer than -# everysec. -# -# More details please check the following article: -# http://antirez.com/post/redis-persistence-demystified.html -# -# If unsure, use "everysec". - -# appendfsync always -appendfsync everysec -# appendfsync no - -# When the AOF fsync policy is set to always or everysec, and a background -# saving process (a background save or AOF log background rewriting) is -# performing a lot of I/O against the disk, in some Linux configurations -# Redis may block too long on the fsync() call. Note that there is no fix for -# this currently, as even performing fsync in a different thread will block -# our synchronous write(2) call. -# -# In order to mitigate this problem it's possible to use the following option -# that will prevent fsync() from being called in the main process while a -# BGSAVE or BGREWRITEAOF is in progress. -# -# This means that while another child is saving, the durability of Redis is -# the same as "appendfsync no". In practical terms, this means that it is -# possible to lose up to 30 seconds of log in the worst scenario (with the -# default Linux settings). -# -# If you have latency problems turn this to "yes". Otherwise leave it as -# "no" that is the safest pick from the point of view of durability. - -no-appendfsync-on-rewrite no - -# Automatic rewrite of the append only file. -# Redis is able to automatically rewrite the log file implicitly calling -# BGREWRITEAOF when the AOF log size grows by the specified percentage. -# -# This is how it works: Redis remembers the size of the AOF file after the -# latest rewrite (if no rewrite has happened since the restart, the size of -# the AOF at startup is used). -# -# This base size is compared to the current size. If the current size is -# bigger than the specified percentage, the rewrite is triggered. Also -# you need to specify a minimal size for the AOF file to be rewritten, this -# is useful to avoid rewriting the AOF file even if the percentage increase -# is reached but it is still pretty small. -# -# Specify a percentage of zero in order to disable the automatic AOF -# rewrite feature. - -auto-aof-rewrite-percentage 100 -auto-aof-rewrite-min-size 64mb - -# An AOF file may be found to be truncated at the end during the Redis -# startup process, when the AOF data gets loaded back into memory. -# This may happen when the system where Redis is running -# crashes, especially when an ext4 filesystem is mounted without the -# data=ordered option (however this can't happen when Redis itself -# crashes or aborts but the operating system still works correctly). -# -# Redis can either exit with an error when this happens, or load as much -# data as possible (the default now) and start if the AOF file is found -# to be truncated at the end. The following option controls this behavior. -# -# If aof-load-truncated is set to yes, a truncated AOF file is loaded and -# the Redis server starts emitting a log to inform the user of the event. -# Otherwise if the option is set to no, the server aborts with an error -# and refuses to start. When the option is set to no, the user requires -# to fix the AOF file using the "redis-check-aof" utility before to restart -# the server. -# -# Note that if the AOF file will be found to be corrupted in the middle -# the server will still exit with an error. This option only applies when -# Redis will try to read more data from the AOF file but not enough bytes -# will be found. -aof-load-truncated yes - -# Redis can create append-only base files in either RDB or AOF formats. Using -# the RDB format is always faster and more efficient, and disabling it is only -# supported for backward compatibility purposes. -aof-use-rdb-preamble yes - -# Redis supports recording timestamp annotations in the AOF to support restoring -# the data from a specific point-in-time. However, using this capability changes -# the AOF format in a way that may not be compatible with existing AOF parsers. -aof-timestamp-enabled no - -################################ SHUTDOWN ##################################### - -# Maximum time to wait for replicas when shutting down, in seconds. -# -# During shut down, a grace period allows any lagging replicas to catch up with -# the latest replication offset before the master exists. This period can -# prevent data loss, especially for deployments without configured disk backups. -# -# The 'shutdown-timeout' value is the grace period's duration in seconds. It is -# only applicable when the instance has replicas. To disable the feature, set -# the value to 0. -# -# shutdown-timeout 10 - -# When Redis receives a SIGINT or SIGTERM, shutdown is initiated and by default -# an RDB snapshot is written to disk in a blocking operation if save points are configured. -# The options used on signaled shutdown can include the following values: -# default: Saves RDB snapshot only if save points are configured. -# Waits for lagging replicas to catch up. -# save: Forces a DB saving operation even if no save points are configured. -# nosave: Prevents DB saving operation even if one or more save points are configured. -# now: Skips waiting for lagging replicas. -# force: Ignores any errors that would normally prevent the server from exiting. -# -# Any combination of values is allowed as long as "save" and "nosave" are not set simultaneously. -# Example: "nosave force now" -# -# shutdown-on-sigint default -# shutdown-on-sigterm default - -################ NON-DETERMINISTIC LONG BLOCKING COMMANDS ##################### - -# Maximum time in milliseconds for EVAL scripts, functions and in some cases -# modules' commands before Redis can start processing or rejecting other clients. -# -# If the maximum execution time is reached Redis will start to reply to most -# commands with a BUSY error. -# -# In this state Redis will only allow a handful of commands to be executed. -# For instance, SCRIPT KILL, FUNCTION KILL, SHUTDOWN NOSAVE and possibly some -# module specific 'allow-busy' commands. -# -# SCRIPT KILL and FUNCTION KILL will only be able to stop a script that did not -# yet call any write commands, so SHUTDOWN NOSAVE may be the only way to stop -# the server in the case a write command was already issued by the script when -# the user doesn't want to wait for the natural termination of the script. -# -# The default is 5 seconds. It is possible to set it to 0 or a negative value -# to disable this mechanism (uninterrupted execution). Note that in the past -# this config had a different name, which is now an alias, so both of these do -# the same: -# lua-time-limit 5000 -# busy-reply-threshold 5000 - -################################ REDIS CLUSTER ############################### - -# Normal Redis instances can't be part of a Redis Cluster; only nodes that are -# started as cluster nodes can. In order to start a Redis instance as a -# cluster node enable the cluster support uncommenting the following: -# -# cluster-enabled yes - -# Every cluster node has a cluster configuration file. This file is not -# intended to be edited by hand. It is created and updated by Redis nodes. -# Every Redis Cluster node requires a different cluster configuration file. -# Make sure that instances running in the same system do not have -# overlapping cluster configuration file names. -# -# cluster-config-file nodes-6379.conf - -# Cluster node timeout is the amount of milliseconds a node must be unreachable -# for it to be considered in failure state. -# Most other internal time limits are a multiple of the node timeout. -# -# cluster-node-timeout 15000 - -# The cluster port is the port that the cluster bus will listen for inbound connections on. When set -# to the default value, 0, it will be bound to the command port + 10000. Setting this value requires -# you to specify the cluster bus port when executing cluster meet. -# cluster-port 0 - -# A replica of a failing master will avoid to start a failover if its data -# looks too old. -# -# There is no simple way for a replica to actually have an exact measure of -# its "data age", so the following two checks are performed: -# -# 1) If there are multiple replicas able to failover, they exchange messages -# in order to try to give an advantage to the replica with the best -# replication offset (more data from the master processed). -# Replicas will try to get their rank by offset, and apply to the start -# of the failover a delay proportional to their rank. -# -# 2) Every single replica computes the time of the last interaction with -# its master. This can be the last ping or command received (if the master -# is still in the "connected" state), or the time that elapsed since the -# disconnection with the master (if the replication link is currently down). -# If the last interaction is too old, the replica will not try to failover -# at all. -# -# The point "2" can be tuned by user. Specifically a replica will not perform -# the failover if, since the last interaction with the master, the time -# elapsed is greater than: -# -# (node-timeout * cluster-replica-validity-factor) + repl-ping-replica-period -# -# So for example if node-timeout is 30 seconds, and the cluster-replica-validity-factor -# is 10, and assuming a default repl-ping-replica-period of 10 seconds, the -# replica will not try to failover if it was not able to talk with the master -# for longer than 310 seconds. -# -# A large cluster-replica-validity-factor may allow replicas with too old data to failover -# a master, while a too small value may prevent the cluster from being able to -# elect a replica at all. -# -# For maximum availability, it is possible to set the cluster-replica-validity-factor -# to a value of 0, which means, that replicas will always try to failover the -# master regardless of the last time they interacted with the master. -# (However they'll always try to apply a delay proportional to their -# offset rank). -# -# Zero is the only value able to guarantee that when all the partitions heal -# the cluster will always be able to continue. -# -# cluster-replica-validity-factor 10 - -# Cluster replicas are able to migrate to orphaned masters, that are masters -# that are left without working replicas. This improves the cluster ability -# to resist to failures as otherwise an orphaned master can't be failed over -# in case of failure if it has no working replicas. -# -# Replicas migrate to orphaned masters only if there are still at least a -# given number of other working replicas for their old master. This number -# is the "migration barrier". A migration barrier of 1 means that a replica -# will migrate only if there is at least 1 other working replica for its master -# and so forth. It usually reflects the number of replicas you want for every -# master in your cluster. -# -# Default is 1 (replicas migrate only if their masters remain with at least -# one replica). To disable migration just set it to a very large value or -# set cluster-allow-replica-migration to 'no'. -# A value of 0 can be set but is useful only for debugging and dangerous -# in production. -# -# cluster-migration-barrier 1 - -# Turning off this option allows to use less automatic cluster configuration. -# It both disables migration to orphaned masters and migration from masters -# that became empty. -# -# Default is 'yes' (allow automatic migrations). -# -# cluster-allow-replica-migration yes - -# By default Redis Cluster nodes stop accepting queries if they detect there -# is at least a hash slot uncovered (no available node is serving it). -# This way if the cluster is partially down (for example a range of hash slots -# are no longer covered) all the cluster becomes, eventually, unavailable. -# It automatically returns available as soon as all the slots are covered again. -# -# However sometimes you want the subset of the cluster which is working, -# to continue to accept queries for the part of the key space that is still -# covered. In order to do so, just set the cluster-require-full-coverage -# option to no. -# -# cluster-require-full-coverage yes - -# This option, when set to yes, prevents replicas from trying to failover its -# master during master failures. However the replica can still perform a -# manual failover, if forced to do so. -# -# This is useful in different scenarios, especially in the case of multiple -# data center operations, where we want one side to never be promoted if not -# in the case of a total DC failure. -# -# cluster-replica-no-failover no - -# This option, when set to yes, allows nodes to serve read traffic while the -# cluster is in a down state, as long as it believes it owns the slots. -# -# This is useful for two cases. The first case is for when an application -# doesn't require consistency of data during node failures or network partitions. -# One example of this is a cache, where as long as the node has the data it -# should be able to serve it. -# -# The second use case is for configurations that don't meet the recommended -# three shards but want to enable cluster mode and scale later. A -# master outage in a 1 or 2 shard configuration causes a read/write outage to the -# entire cluster without this option set, with it set there is only a write outage. -# Without a quorum of masters, slot ownership will not change automatically. -# -# cluster-allow-reads-when-down no - -# This option, when set to yes, allows nodes to serve pubsub shard traffic while -# the cluster is in a down state, as long as it believes it owns the slots. -# -# This is useful if the application would like to use the pubsub feature even when -# the cluster global stable state is not OK. If the application wants to make sure only -# one shard is serving a given channel, this feature should be kept as yes. -# -# cluster-allow-pubsubshard-when-down yes - -# Cluster link send buffer limit is the limit on the memory usage of an individual -# cluster bus link's send buffer in bytes. Cluster links would be freed if they exceed -# this limit. This is to primarily prevent send buffers from growing unbounded on links -# toward slow peers (E.g. PubSub messages being piled up). -# This limit is disabled by default. Enable this limit when 'mem_cluster_links' INFO field -# and/or 'send-buffer-allocated' entries in the 'CLUSTER LINKS` command output continuously increase. -# Minimum limit of 1gb is recommended so that cluster link buffer can fit in at least a single -# PubSub message by default. (client-query-buffer-limit default value is 1gb) -# -# cluster-link-sendbuf-limit 0 - -# Clusters can configure their announced hostname using this config. This is a common use case for -# applications that need to use TLS Server Name Indication (SNI) or dealing with DNS based -# routing. By default this value is only shown as additional metadata in the CLUSTER SLOTS -# command, but can be changed using 'cluster-preferred-endpoint-type' config. This value is -# communicated along the clusterbus to all nodes, setting it to an empty string will remove -# the hostname and also propagate the removal. -# -# cluster-announce-hostname "" - -# Clusters can advertise how clients should connect to them using either their IP address, -# a user defined hostname, or by declaring they have no endpoint. Which endpoint is -# shown as the preferred endpoint is set by using the cluster-preferred-endpoint-type -# config with values 'ip', 'hostname', or 'unknown-endpoint'. This value controls how -# the endpoint returned for MOVED/ASKING requests as well as the first field of CLUSTER SLOTS. -# If the preferred endpoint type is set to hostname, but no announced hostname is set, a '?' -# will be returned instead. -# -# When a cluster advertises itself as having an unknown endpoint, it's indicating that -# the server doesn't know how clients can reach the cluster. This can happen in certain -# networking situations where there are multiple possible routes to the node, and the -# server doesn't know which one the client took. In this case, the server is expecting -# the client to reach out on the same endpoint it used for making the last request, but use -# the port provided in the response. -# -# cluster-preferred-endpoint-type ip - -# In order to setup your cluster make sure to read the documentation -# available at https://redis.io web site. - -########################## CLUSTER DOCKER/NAT support ######################## - -# In certain deployments, Redis Cluster nodes address discovery fails, because -# addresses are NAT-ted or because ports are forwarded (the typical case is -# Docker and other containers). -# -# In order to make Redis Cluster working in such environments, a static -# configuration where each node knows its public address is needed. The -# following four options are used for this scope, and are: -# -# * cluster-announce-ip -# * cluster-announce-port -# * cluster-announce-tls-port -# * cluster-announce-bus-port -# -# Each instructs the node about its address, client ports (for connections -# without and with TLS) and cluster message bus port. The information is then -# published in the header of the bus packets so that other nodes will be able to -# correctly map the address of the node publishing the information. -# -# If cluster-tls is set to yes and cluster-announce-tls-port is omitted or set -# to zero, then cluster-announce-port refers to the TLS port. Note also that -# cluster-announce-tls-port has no effect if cluster-tls is set to no. -# -# If the above options are not used, the normal Redis Cluster auto-detection -# will be used instead. -# -# Note that when remapped, the bus port may not be at the fixed offset of -# clients port + 10000, so you can specify any port and bus-port depending -# on how they get remapped. If the bus-port is not set, a fixed offset of -# 10000 will be used as usual. -# -# Example: -# -# cluster-announce-ip 10.1.1.5 -# cluster-announce-tls-port 6379 -# cluster-announce-port 0 -# cluster-announce-bus-port 6380 - -################################## SLOW LOG ################################### - -# The Redis Slow Log is a system to log queries that exceeded a specified -# execution time. The execution time does not include the I/O operations -# like talking with the client, sending the reply and so forth, -# but just the time needed to actually execute the command (this is the only -# stage of command execution where the thread is blocked and can not serve -# other requests in the meantime). -# -# You can configure the slow log with two parameters: one tells Redis -# what is the execution time, in microseconds, to exceed in order for the -# command to get logged, and the other parameter is the length of the -# slow log. When a new command is logged the oldest one is removed from the -# queue of logged commands. - -# The following time is expressed in microseconds, so 1000000 is equivalent -# to one second. Note that a negative number disables the slow log, while -# a value of zero forces the logging of every command. -slowlog-log-slower-than 10000 - -# There is no limit to this length. Just be aware that it will consume memory. -# You can reclaim memory used by the slow log with SLOWLOG RESET. -slowlog-max-len 128 - -################################ LATENCY MONITOR ############################## - -# The Redis latency monitoring subsystem samples different operations -# at runtime in order to collect data related to possible sources of -# latency of a Redis instance. -# -# Via the LATENCY command this information is available to the user that can -# print graphs and obtain reports. -# -# The system only logs operations that were performed in a time equal or -# greater than the amount of milliseconds specified via the -# latency-monitor-threshold configuration directive. When its value is set -# to zero, the latency monitor is turned off. -# -# By default latency monitoring is disabled since it is mostly not needed -# if you don't have latency issues, and collecting data has a performance -# impact, that while very small, can be measured under big load. Latency -# monitoring can easily be enabled at runtime using the command -# "CONFIG SET latency-monitor-threshold " if needed. -latency-monitor-threshold 0 - -################################ LATENCY TRACKING ############################## - -# The Redis extended latency monitoring tracks the per command latencies and enables -# exporting the percentile distribution via the INFO latencystats command, -# and cumulative latency distributions (histograms) via the LATENCY command. -# -# By default, the extended latency monitoring is enabled since the overhead -# of keeping track of the command latency is very small. -# latency-tracking yes - -# By default the exported latency percentiles via the INFO latencystats command -# are the p50, p99, and p999. -# latency-tracking-info-percentiles 50 99 99.9 - -############################# EVENT NOTIFICATION ############################## - -# Redis can notify Pub/Sub clients about events happening in the key space. -# This feature is documented at https://redis.io/topics/notifications -# -# For instance if keyspace events notification is enabled, and a client -# performs a DEL operation on key "foo" stored in the Database 0, two -# messages will be published via Pub/Sub: -# -# PUBLISH __keyspace@0__:foo del -# PUBLISH __keyevent@0__:del foo -# -# It is possible to select the events that Redis will notify among a set -# of classes. Every class is identified by a single character: -# -# K Keyspace events, published with __keyspace@__ prefix. -# E Keyevent events, published with __keyevent@__ prefix. -# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ... -# $ String commands -# l List commands -# s Set commands -# h Hash commands -# z Sorted set commands -# x Expired events (events generated every time a key expires) -# e Evicted events (events generated when a key is evicted for maxmemory) -# n New key events (Note: not included in the 'A' class) -# t Stream commands -# d Module key type events -# m Key-miss events (Note: It is not included in the 'A' class) -# A Alias for g$lshzxetd, so that the "AKE" string means all the events -# (Except key-miss events which are excluded from 'A' due to their -# unique nature). -# -# The "notify-keyspace-events" takes as argument a string that is composed -# of zero or multiple characters. The empty string means that notifications -# are disabled. -# -# Example: to enable list and generic events, from the point of view of the -# event name, use: -# -# notify-keyspace-events Elg -# -# Example 2: to get the stream of the expired keys subscribing to channel -# name __keyevent@0__:expired use: -# -# notify-keyspace-events Ex -# -# By default all notifications are disabled because most users don't need -# this feature and the feature has some overhead. Note that if you don't -# specify at least one of K or E, no events will be delivered. -notify-keyspace-events "" - -############################### ADVANCED CONFIG ############################### - -# Hashes are encoded using a memory efficient data structure when they have a -# small number of entries, and the biggest entry does not exceed a given -# threshold. These thresholds can be configured using the following directives. -hash-max-listpack-entries 512 -hash-max-listpack-value 64 - -# Lists are also encoded in a special way to save a lot of space. -# The number of entries allowed per internal list node can be specified -# as a fixed maximum size or a maximum number of elements. -# For a fixed maximum size, use -5 through -1, meaning: -# -5: max size: 64 Kb <-- not recommended for normal workloads -# -4: max size: 32 Kb <-- not recommended -# -3: max size: 16 Kb <-- probably not recommended -# -2: max size: 8 Kb <-- good -# -1: max size: 4 Kb <-- good -# Positive numbers mean store up to _exactly_ that number of elements -# per list node. -# The highest performing option is usually -2 (8 Kb size) or -1 (4 Kb size), -# but if your use case is unique, adjust the settings as necessary. -list-max-listpack-size -2 - -# Lists may also be compressed. -# Compress depth is the number of quicklist ziplist nodes from *each* side of -# the list to *exclude* from compression. The head and tail of the list -# are always uncompressed for fast push/pop operations. Settings are: -# 0: disable all list compression -# 1: depth 1 means "don't start compressing until after 1 node into the list, -# going from either the head or tail" -# So: [head]->node->node->...->node->[tail] -# [head], [tail] will always be uncompressed; inner nodes will compress. -# 2: [head]->[next]->node->node->...->node->[prev]->[tail] -# 2 here means: don't compress head or head->next or tail->prev or tail, -# but compress all nodes between them. -# 3: [head]->[next]->[next]->node->node->...->node->[prev]->[prev]->[tail] -# etc. -list-compress-depth 0 - -# Sets have a special encoding in just one case: when a set is composed -# of just strings that happen to be integers in radix 10 in the range -# of 64 bit signed integers. -# The following configuration setting sets the limit in the size of the -# set in order to use this special memory saving encoding. -set-max-intset-entries 512 - -# Similarly to hashes and lists, sorted sets are also specially encoded in -# order to save a lot of space. This encoding is only used when the length and -# elements of a sorted set are below the following limits: -zset-max-listpack-entries 128 -zset-max-listpack-value 64 - -# HyperLogLog sparse representation bytes limit. The limit includes the -# 16 bytes header. When an HyperLogLog using the sparse representation crosses -# this limit, it is converted into the dense representation. -# -# A value greater than 16000 is totally useless, since at that point the -# dense representation is more memory efficient. -# -# The suggested value is ~ 3000 in order to have the benefits of -# the space efficient encoding without slowing down too much PFADD, -# which is O(N) with the sparse encoding. The value can be raised to -# ~ 10000 when CPU is not a concern, but space is, and the data set is -# composed of many HyperLogLogs with cardinality in the 0 - 15000 range. -hll-sparse-max-bytes 3000 - -# Streams macro node max size / items. The stream data structure is a radix -# tree of big nodes that encode multiple items inside. Using this configuration -# it is possible to configure how big a single node can be in bytes, and the -# maximum number of items it may contain before switching to a new node when -# appending new stream entries. If any of the following settings are set to -# zero, the limit is ignored, so for instance it is possible to set just a -# max entries limit by setting max-bytes to 0 and max-entries to the desired -# value. -stream-node-max-bytes 4096 -stream-node-max-entries 100 - -# Active rehashing uses 1 millisecond every 100 milliseconds of CPU time in -# order to help rehashing the main Redis hash table (the one mapping top-level -# keys to values). The hash table implementation Redis uses (see dict.c) -# performs a lazy rehashing: the more operation you run into a hash table -# that is rehashing, the more rehashing "steps" are performed, so if the -# server is idle the rehashing is never complete and some more memory is used -# by the hash table. -# -# The default is to use this millisecond 10 times every second in order to -# actively rehash the main dictionaries, freeing memory when possible. -# -# If unsure: -# use "activerehashing no" if you have hard latency requirements and it is -# not a good thing in your environment that Redis can reply from time to time -# to queries with 2 milliseconds delay. -# -# use "activerehashing yes" if you don't have such hard requirements but -# want to free memory asap when possible. -activerehashing yes - -# The client output buffer limits can be used to force disconnection of clients -# that are not reading data from the server fast enough for some reason (a -# common reason is that a Pub/Sub client can't consume messages as fast as the -# publisher can produce them). -# -# The limit can be set differently for the three different classes of clients: -# -# normal -> normal clients including MONITOR clients -# replica -> replica clients -# pubsub -> clients subscribed to at least one pubsub channel or pattern -# -# The syntax of every client-output-buffer-limit directive is the following: -# -# client-output-buffer-limit -# -# A client is immediately disconnected once the hard limit is reached, or if -# the soft limit is reached and remains reached for the specified number of -# seconds (continuously). -# So for instance if the hard limit is 32 megabytes and the soft limit is -# 16 megabytes / 10 seconds, the client will get disconnected immediately -# if the size of the output buffers reach 32 megabytes, but will also get -# disconnected if the client reaches 16 megabytes and continuously overcomes -# the limit for 10 seconds. -# -# By default normal clients are not limited because they don't receive data -# without asking (in a push way), but just after a request, so only -# asynchronous clients may create a scenario where data is requested faster -# than it can read. -# -# Instead there is a default limit for pubsub and replica clients, since -# subscribers and replicas receive data in a push fashion. -# -# Note that it doesn't make sense to set the replica clients output buffer -# limit lower than the repl-backlog-size config (partial sync will succeed -# and then replica will get disconnected). -# Such a configuration is ignored (the size of repl-backlog-size will be used). -# This doesn't have memory consumption implications since the replica client -# will share the backlog buffers memory. -# -# Both the hard or the soft limit can be disabled by setting them to zero. -client-output-buffer-limit normal 0 0 0 -client-output-buffer-limit replica 256mb 64mb 60 -client-output-buffer-limit pubsub 32mb 8mb 60 - -# Client query buffers accumulate new commands. They are limited to a fixed -# amount by default in order to avoid that a protocol desynchronization (for -# instance due to a bug in the client) will lead to unbound memory usage in -# the query buffer. However you can configure it here if you have very special -# needs, such us huge multi/exec requests or alike. -# -# client-query-buffer-limit 1gb - -# In some scenarios client connections can hog up memory leading to OOM -# errors or data eviction. To avoid this we can cap the accumulated memory -# used by all client connections (all pubsub and normal clients). Once we -# reach that limit connections will be dropped by the server freeing up -# memory. The server will attempt to drop the connections using the most -# memory first. We call this mechanism "client eviction". -# -# Client eviction is configured using the maxmemory-clients setting as follows: -# 0 - client eviction is disabled (default) -# -# A memory value can be used for the client eviction threshold, -# for example: -# maxmemory-clients 1g -# -# A percentage value (between 1% and 100%) means the client eviction threshold -# is based on a percentage of the maxmemory setting. For example to set client -# eviction at 5% of maxmemory: -# maxmemory-clients 5% - -# In the Redis protocol, bulk requests, that are, elements representing single -# strings, are normally limited to 512 mb. However you can change this limit -# here, but must be 1mb or greater -# -# proto-max-bulk-len 512mb - -# Redis calls an internal function to perform many background tasks, like -# closing connections of clients in timeout, purging expired keys that are -# never requested, and so forth. -# -# Not all tasks are performed with the same frequency, but Redis checks for -# tasks to perform according to the specified "hz" value. -# -# By default "hz" is set to 10. Raising the value will use more CPU when -# Redis is idle, but at the same time will make Redis more responsive when -# there are many keys expiring at the same time, and timeouts may be -# handled with more precision. -# -# The range is between 1 and 500, however a value over 100 is usually not -# a good idea. Most users should use the default of 10 and raise this up to -# 100 only in environments where very low latency is required. -hz 10 - -# Normally it is useful to have an HZ value which is proportional to the -# number of clients connected. This is useful in order, for instance, to -# avoid too many clients are processed for each background task invocation -# in order to avoid latency spikes. -# -# Since the default HZ value by default is conservatively set to 10, Redis -# offers, and enables by default, the ability to use an adaptive HZ value -# which will temporarily raise when there are many connected clients. -# -# When dynamic HZ is enabled, the actual configured HZ will be used -# as a baseline, but multiples of the configured HZ value will be actually -# used as needed once more clients are connected. In this way an idle -# instance will use very little CPU time while a busy instance will be -# more responsive. -dynamic-hz yes - -# When a child rewrites the AOF file, if the following option is enabled -# the file will be fsync-ed every 4 MB of data generated. This is useful -# in order to commit the file to the disk more incrementally and avoid -# big latency spikes. -aof-rewrite-incremental-fsync yes - -# When redis saves RDB file, if the following option is enabled -# the file will be fsync-ed every 4 MB of data generated. This is useful -# in order to commit the file to the disk more incrementally and avoid -# big latency spikes. -rdb-save-incremental-fsync yes - -# Redis LFU eviction (see maxmemory setting) can be tuned. However it is a good -# idea to start with the default settings and only change them after investigating -# how to improve the performances and how the keys LFU change over time, which -# is possible to inspect via the OBJECT FREQ command. -# -# There are two tunable parameters in the Redis LFU implementation: the -# counter logarithm factor and the counter decay time. It is important to -# understand what the two parameters mean before changing them. -# -# The LFU counter is just 8 bits per key, it's maximum value is 255, so Redis -# uses a probabilistic increment with logarithmic behavior. Given the value -# of the old counter, when a key is accessed, the counter is incremented in -# this way: -# -# 1. A random number R between 0 and 1 is extracted. -# 2. A probability P is calculated as 1/(old_value*lfu_log_factor+1). -# 3. The counter is incremented only if R < P. -# -# The default lfu-log-factor is 10. This is a table of how the frequency -# counter changes with a different number of accesses with different -# logarithmic factors: -# -# +--------+------------+------------+------------+------------+------------+ -# | factor | 100 hits | 1000 hits | 100K hits | 1M hits | 10M hits | -# +--------+------------+------------+------------+------------+------------+ -# | 0 | 104 | 255 | 255 | 255 | 255 | -# +--------+------------+------------+------------+------------+------------+ -# | 1 | 18 | 49 | 255 | 255 | 255 | -# +--------+------------+------------+------------+------------+------------+ -# | 10 | 10 | 18 | 142 | 255 | 255 | -# +--------+------------+------------+------------+------------+------------+ -# | 100 | 8 | 11 | 49 | 143 | 255 | -# +--------+------------+------------+------------+------------+------------+ -# -# NOTE: The above table was obtained by running the following commands: -# -# redis-benchmark -n 1000000 incr foo -# redis-cli object freq foo -# -# NOTE 2: The counter initial value is 5 in order to give new objects a chance -# to accumulate hits. -# -# The counter decay time is the time, in minutes, that must elapse in order -# for the key counter to be divided by two (or decremented if it has a value -# less <= 10). -# -# The default value for the lfu-decay-time is 1. A special value of 0 means to -# decay the counter every time it happens to be scanned. -# -# lfu-log-factor 10 -# lfu-decay-time 1 - -########################### ACTIVE DEFRAGMENTATION ####################### -# -# What is active defragmentation? -# ------------------------------- -# -# Active (online) defragmentation allows a Redis server to compact the -# spaces left between small allocations and deallocations of data in memory, -# thus allowing to reclaim back memory. -# -# Fragmentation is a natural process that happens with every allocator (but -# less so with Jemalloc, fortunately) and certain workloads. Normally a server -# restart is needed in order to lower the fragmentation, or at least to flush -# away all the data and create it again. However thanks to this feature -# implemented by Oran Agra for Redis 4.0 this process can happen at runtime -# in a "hot" way, while the server is running. -# -# Basically when the fragmentation is over a certain level (see the -# configuration options below) Redis will start to create new copies of the -# values in contiguous memory regions by exploiting certain specific Jemalloc -# features (in order to understand if an allocation is causing fragmentation -# and to allocate it in a better place), and at the same time, will release the -# old copies of the data. This process, repeated incrementally for all the keys -# will cause the fragmentation to drop back to normal values. -# -# Important things to understand: -# -# 1. This feature is disabled by default, and only works if you compiled Redis -# to use the copy of Jemalloc we ship with the source code of Redis. -# This is the default with Linux builds. -# -# 2. You never need to enable this feature if you don't have fragmentation -# issues. -# -# 3. Once you experience fragmentation, you can enable this feature when -# needed with the command "CONFIG SET activedefrag yes". -# -# The configuration parameters are able to fine tune the behavior of the -# defragmentation process. If you are not sure about what they mean it is -# a good idea to leave the defaults untouched. - -# Active defragmentation is disabled by default -# activedefrag no - -# Minimum amount of fragmentation waste to start active defrag -# active-defrag-ignore-bytes 100mb - -# Minimum percentage of fragmentation to start active defrag -# active-defrag-threshold-lower 10 - -# Maximum percentage of fragmentation at which we use maximum effort -# active-defrag-threshold-upper 100 - -# Minimal effort for defrag in CPU percentage, to be used when the lower -# threshold is reached -# active-defrag-cycle-min 1 - -# Maximal effort for defrag in CPU percentage, to be used when the upper -# threshold is reached -# active-defrag-cycle-max 25 - -# Maximum number of set/hash/zset/list fields that will be processed from -# the main dictionary scan -# active-defrag-max-scan-fields 1000 - -# Jemalloc background thread for purging will be enabled by default -jemalloc-bg-thread yes - -# It is possible to pin different threads and processes of Redis to specific -# CPUs in your system, in order to maximize the performances of the server. -# This is useful both in order to pin different Redis threads in different -# CPUs, but also in order to make sure that multiple Redis instances running -# in the same host will be pinned to different CPUs. -# -# Normally you can do this using the "taskset" command, however it is also -# possible to this via Redis configuration directly, both in Linux and FreeBSD. -# -# You can pin the server/IO threads, bio threads, aof rewrite child process, and -# the bgsave child process. The syntax to specify the cpu list is the same as -# the taskset command: -# -# Set redis server/io threads to cpu affinity 0,2,4,6: -# server_cpulist 0-7:2 -# -# Set bio threads to cpu affinity 1,3: -# bio_cpulist 1,3 -# -# Set aof rewrite child process to cpu affinity 8,9,10,11: -# aof_rewrite_cpulist 8-11 -# -# Set bgsave child process to cpu affinity 1,10,11 -# bgsave_cpulist 1,10-11 - -# In some cases redis will emit warnings and even refuse to start if it detects -# that the system is in bad state, it is possible to suppress these warnings -# by setting the following config which takes a space delimited list of warnings -# to suppress -# -# ignore-warnings ARM64-COW-BUG diff --git a/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf b/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf deleted file mode 100644 index 5a9c582..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/rspamd_redis.conf +++ /dev/null @@ -1 +0,0 @@ -servers = "127.0.0.1"; From c171866faf6647905d241081efec6fcf16f050db Mon Sep 17 00:00:00 2001 From: link2xt Date: Fri, 12 Jan 2024 18:46:07 +0000 Subject: [PATCH 16/22] Actually disable phising, rbl and hfilter --- cmdeploy/src/cmdeploy/__init__.py | 39 ++++++---------------- cmdeploy/src/cmdeploy/rspamd/disabled.conf | 1 + cmdeploy/src/cmdeploy/rspamd/hfilter.conf | 5 --- cmdeploy/src/cmdeploy/rspamd/phishing.conf | 1 - cmdeploy/src/cmdeploy/rspamd/rbl.conf | 4 --- 5 files changed, 11 insertions(+), 39 deletions(-) create mode 100644 cmdeploy/src/cmdeploy/rspamd/disabled.conf delete mode 100644 cmdeploy/src/cmdeploy/rspamd/hfilter.conf delete mode 100644 cmdeploy/src/cmdeploy/rspamd/phishing.conf delete mode 100644 cmdeploy/src/cmdeploy/rspamd/rbl.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 9d5fe94..f3cae30 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -409,25 +409,16 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: packages="rspamd", ) - phishing_conf = files.put( - name="disable phishing rspamd plugin", - src=importlib.resources.files(__package__).joinpath("rspamd/phishing.conf"), - dest="/etc/rspamd/local.d/phishing.conf", - user="root", - group="root", - mode="644", - ) - need_restart |= phishing_conf.changed - - rbl = files.put( - name="disable rbl rspamd plugin", - src=importlib.resources.files(__package__).joinpath("rspamd/rbl.conf"), - dest="/etc/rspamd/override.d/rbl.conf", - user="root", - group="root", - mode="644", - ) - need_restart |= rbl.changed + for module in ["phishing", "rbl", "hfilter"]: + disabled_module_conf = files.put( + name="disable phishing rspamd plugin", + src=importlib.resources.files(__package__).joinpath("rspamd/disabled.conf"), + dest=f"/etc/rspamd/local.d/{module}.conf", + user="root", + group="root", + mode="644", + ) + need_restart |= disabled_module_conf.changed options_inc = files.put( name="disable fuzzy checks", @@ -439,16 +430,6 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= options_inc.changed - hfilter = files.put( - name="disable hfilter rspamd plugin", - src=importlib.resources.files(__package__).joinpath("rspamd/hfilter.conf"), - dest="/etc/rspamd/local.d/hfilter.conf", - user="root", - group="root", - mode="644", - ) - need_restart |= hfilter.changed - groups_conf = files.put( name="set metrics for DKIM, SPF, and DMARC fails", src=importlib.resources.files(__package__).joinpath( diff --git a/cmdeploy/src/cmdeploy/rspamd/disabled.conf b/cmdeploy/src/cmdeploy/rspamd/disabled.conf new file mode 100644 index 0000000..a6ee831 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/disabled.conf @@ -0,0 +1 @@ +enabled = false; diff --git a/cmdeploy/src/cmdeploy/rspamd/hfilter.conf b/cmdeploy/src/cmdeploy/rspamd/hfilter.conf deleted file mode 100644 index 87efb91..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/hfilter.conf +++ /dev/null @@ -1,5 +0,0 @@ -helo_enabled = false; -hostname_enabled = false; -url_enabled = false; -from_enabled = false; -rcpt_enabled = false; diff --git a/cmdeploy/src/cmdeploy/rspamd/phishing.conf b/cmdeploy/src/cmdeploy/rspamd/phishing.conf deleted file mode 100644 index 69be164..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/phishing.conf +++ /dev/null @@ -1 +0,0 @@ -phishtank_enabled = false; diff --git a/cmdeploy/src/cmdeploy/rspamd/rbl.conf b/cmdeploy/src/cmdeploy/rspamd/rbl.conf deleted file mode 100644 index f0f1b78..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/rbl.conf +++ /dev/null @@ -1,4 +0,0 @@ -url_whitelist = []; - -rbls { -} From ce9fe920dcb4c326cf0da97b99526372197b0fbe Mon Sep 17 00:00:00 2001 From: link2xt Date: Fri, 12 Jan 2024 18:47:57 +0000 Subject: [PATCH 17/22] Do not return anything from remove_opendkim() --- cmdeploy/src/cmdeploy/__init__.py | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index f3cae30..144525b 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -382,7 +382,7 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool: return need_restart -def remove_opendkim() -> bool: +def remove_opendkim() -> None: """Remove OpenDKIM, deprecated""" files.file( name="Remove legacy opendkim.conf", @@ -397,7 +397,6 @@ def remove_opendkim() -> bool: ) apt.packages(name="Remove openDKIM", packages="opendkim", present=False) - return False def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: From 62e25e44fd17b3ab37b17ebfd3e7035b928cf6ba Mon Sep 17 00:00:00 2001 From: link2xt Date: Fri, 12 Jan 2024 18:56:11 +0000 Subject: [PATCH 18/22] Disable ratelimit module like other modules --- cmdeploy/src/cmdeploy/__init__.py | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 144525b..f834254 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -408,7 +408,7 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: packages="rspamd", ) - for module in ["phishing", "rbl", "hfilter"]: + for module in ["phishing", "rbl", "hfilter", "ratelimit"]: disabled_module_conf = files.put( name="disable phishing rspamd plugin", src=importlib.resources.files(__package__).joinpath("rspamd/disabled.conf"), @@ -441,13 +441,6 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= groups_conf.changed - ratelimit_conf = files.file( - name="disable rate limiting", - path="/etc/rspamd/local.d/ratelimit.conf", - present=False, - ) - need_restart |= ratelimit_conf.changed - dkim_directory = "/var/lib/rspamd/dkim/" dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" dkim_dns_file = f"{dkim_directory}{mail_domain}.{dkim_selector}.zone" From 0a6db5161d6342775ff729e6e92c1498628351ca Mon Sep 17 00:00:00 2001 From: link2xt Date: Fri, 12 Jan 2024 19:05:23 +0000 Subject: [PATCH 19/22] Remove unused _configure_opendkim --- cmdeploy/src/cmdeploy/__init__.py | 77 ------------------------------- 1 file changed, 77 deletions(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index f834254..96328e4 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -126,83 +126,6 @@ def _install_remote_venv_with_chatmaild(config) -> None: ) -def _configure_opendkim(domain: str, dkim_selector: str = "dkim") -> bool: - """Configures OpenDKIM""" - need_restart = False - - server.group(name="Create opendkim group", group="opendkim", system=True) - server.user( - name="Add postfix user to opendkim group for socket access", - user="postfix", - groups=["opendkim"], - system=True, - ) - - apt.packages( - name="apt install opendkim opendkim-tools", - packages=["opendkim", "opendkim-tools"], - ) - - main_config = files.template( - src=importlib.resources.files(__package__).joinpath("opendkim/opendkim.conf"), - dest="/etc/opendkim.conf", - user="root", - group="root", - mode="644", - config={"domain_name": domain, "opendkim_selector": dkim_selector}, - ) - need_restart |= main_config.changed - - files.directory( - name="Add opendkim directory to /etc", - path="/etc/opendkim", - user="opendkim", - group="opendkim", - mode="750", - present=True, - ) - - keytable = files.template( - src=importlib.resources.files(__package__).joinpath("opendkim/KeyTable"), - dest="/etc/dkimkeys/KeyTable", - user="opendkim", - group="opendkim", - mode="644", - config={"domain_name": domain, "opendkim_selector": dkim_selector}, - ) - need_restart |= keytable.changed - - signing_table = files.template( - src=importlib.resources.files(__package__).joinpath("opendkim/SigningTable"), - dest="/etc/dkimkeys/SigningTable", - user="opendkim", - group="opendkim", - mode="644", - config={"domain_name": domain, "opendkim_selector": dkim_selector}, - ) - need_restart |= signing_table.changed - files.directory( - name="Add opendkim socket directory to /var/spool/postfix", - path="/var/spool/postfix/opendkim", - user="opendkim", - group="opendkim", - mode="750", - present=True, - ) - - if not host.get_fact(File, f"/etc/dkimkeys/{dkim_selector}.private"): - server.shell( - name="Generate OpenDKIM domain keys", - commands=[ - f"opendkim-genkey -D /etc/dkimkeys -d {domain} -s {dkim_selector}" - ], - _sudo=True, - _sudo_user="opendkim", - ) - - return need_restart - - def _install_mta_sts_daemon() -> bool: need_restart = False From 5366df8dc649bf128c582b8f413da8c7abd8f1ff Mon Sep 17 00:00:00 2001 From: link2xt Date: Sun, 14 Jan 2024 08:45:23 +0000 Subject: [PATCH 20/22] Replace rspamd rule weights with a strict rule --- cmdeploy/src/cmdeploy/__init__.py | 11 ++++++----- cmdeploy/src/cmdeploy/rspamd/force_actions.conf | 11 +++++++++++ cmdeploy/src/cmdeploy/rspamd/policies_group.conf | 14 -------------- 3 files changed, 17 insertions(+), 19 deletions(-) create mode 100644 cmdeploy/src/cmdeploy/rspamd/force_actions.conf delete mode 100644 cmdeploy/src/cmdeploy/rspamd/policies_group.conf diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index 96328e4..e38eb6c 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -352,17 +352,18 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: ) need_restart |= options_inc.changed - groups_conf = files.put( - name="set metrics for DKIM, SPF, and DMARC fails", + # https://rspamd.com/doc/modules/force_actions.html + force_actions_conf = files.put( + name="Set up rules to reject on DKIM, SPF and DMARC fails", src=importlib.resources.files(__package__).joinpath( - "rspamd/policies_group.conf" + "rspamd/force_actions.conf" ), - dest="/etc/rspamd/local.d/policies_group.conf", + dest="/etc/rspamd/local.d/force_actions.conf", user="root", group="root", mode="644", ) - need_restart |= groups_conf.changed + need_restart |= force_actions_conf.changed dkim_directory = "/var/lib/rspamd/dkim/" dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key" diff --git a/cmdeploy/src/cmdeploy/rspamd/force_actions.conf b/cmdeploy/src/cmdeploy/rspamd/force_actions.conf new file mode 100644 index 0000000..a5be751 --- /dev/null +++ b/cmdeploy/src/cmdeploy/rspamd/force_actions.conf @@ -0,0 +1,11 @@ +rules { + REJECT_DKIM_SPF { + action = "reject"; + # Reject if + # bad DKIM signature (R_DKIM_REJECT) + # no DKIM signature (R_DKIM_NA) + # SPF failure (R_SPF_FAIL) + # DMARC policy failure (DMARC_POLICY_REJECT) + expression = "R_DKIM_REJECT | R_DKIM_NA | R_SPF_FAIL | DMARC_POLICY_REJECT"; + } +} diff --git a/cmdeploy/src/cmdeploy/rspamd/policies_group.conf b/cmdeploy/src/cmdeploy/rspamd/policies_group.conf deleted file mode 100644 index 6ad714d..0000000 --- a/cmdeploy/src/cmdeploy/rspamd/policies_group.conf +++ /dev/null @@ -1,14 +0,0 @@ -symbols { - "R_DKIM_REJECT" { - weight = 15; - } - "R_SPF_FAIL" { - weight = 15; - } - "R_DKIM_NA" { - weight = 15; - } - "DMARC_POLICY_REJECT" { - weight = 15; - } -} \ No newline at end of file From 95de87a325556c016ca605be97b3a1b0d2fc5a11 Mon Sep 17 00:00:00 2001 From: link2xt Date: Sun, 14 Jan 2024 08:45:39 +0000 Subject: [PATCH 21/22] Fixup rspamd disabled.conf deployment message --- cmdeploy/src/cmdeploy/__init__.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cmdeploy/src/cmdeploy/__init__.py b/cmdeploy/src/cmdeploy/__init__.py index e38eb6c..0963c23 100644 --- a/cmdeploy/src/cmdeploy/__init__.py +++ b/cmdeploy/src/cmdeploy/__init__.py @@ -333,7 +333,7 @@ def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool: for module in ["phishing", "rbl", "hfilter", "ratelimit"]: disabled_module_conf = files.put( - name="disable phishing rspamd plugin", + name=f"disable {module} rspamd plugin", src=importlib.resources.files(__package__).joinpath("rspamd/disabled.conf"), dest=f"/etc/rspamd/local.d/{module}.conf", user="root", From 7c9abfbde32804ae73731f3be953b806b30c09a0 Mon Sep 17 00:00:00 2001 From: link2xt Date: Sun, 14 Jan 2024 09:19:04 +0000 Subject: [PATCH 22/22] Reject on DKIM PERMFAIL and SPF PERMFAIL as well --- .../src/cmdeploy/rspamd/force_actions.conf | 29 +++++++++++++++---- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/cmdeploy/src/cmdeploy/rspamd/force_actions.conf b/cmdeploy/src/cmdeploy/rspamd/force_actions.conf index a5be751..9ca9549 100644 --- a/cmdeploy/src/cmdeploy/rspamd/force_actions.conf +++ b/cmdeploy/src/cmdeploy/rspamd/force_actions.conf @@ -2,10 +2,29 @@ rules { REJECT_DKIM_SPF { action = "reject"; # Reject if - # bad DKIM signature (R_DKIM_REJECT) - # no DKIM signature (R_DKIM_NA) - # SPF failure (R_SPF_FAIL) - # DMARC policy failure (DMARC_POLICY_REJECT) - expression = "R_DKIM_REJECT | R_DKIM_NA | R_SPF_FAIL | DMARC_POLICY_REJECT"; + # - R_DKIM_RJECT: DKIM reject inserted by `dkim` module. + # - R_DKIM_PERMFAIL: permanent failure inserted by `dkim` module e.g. no DKIM DNS record found. + # - No DKIM signing (R_DKIM_NA symbol inserted by `dkim` module) + # + # - SPF failure (R_SPF_FAIL) + # - SPF permanent failure, e.g. failed to resolve DNS record referenced from SPF (R_SPF_PERMFAIL) + # + # - DMARC policy failure (DMARC_POLICY_REJECT) + # + # Do not reject if: + # - R_DKIM_TEMPFAIL, it is a DNS resolution failure + # and we do not want to lose messages because of faulty network. + # + # - R_SPF_SOFTFAIL + # - R_SPF_NEUTRAL + # - R_SPF_DNSFAIL + # - R_SPF_NA + # + # - DMARC_DNSFAIL + # - DMARC_NA + # - DMARC_POLICY_SOFTFAIL + # - DMARC_POLICY_QUARANTINE + # - DMARC_BAD_POLICY + expression = "R_DKIM_REJECT | R_DKIM_PERMFAIL | R_DKIM_NA | R_SPF_FAIL | R_SPF_PERMFAIL | DMARC_POLICY_REJECT"; } }