X-Git-Url: https://git.saurik.com/redis.git/blobdiff_plain/999fe0d352618dddd9e51fbb27ebc1a86a2c583a..2861cd84f9035f887715da8f51a622b8b5dfe306:/sentinel.conf diff --git a/sentinel.conf b/sentinel.conf index eb2de6a5..94169ee8 100644 --- a/sentinel.conf +++ b/sentinel.conf @@ -13,6 +13,25 @@ port 26379 # The valid charset is A-z 0-9 and the three characters ".-_". sentinel monitor mymaster 127.0.0.1 6379 2 +# sentinel auth-pass +# +# Set the password to use to authenticate with the master and slaves. +# Useful if there is a password set in the Redis instances to monitor. +# +# Note that the master password is also used for slaves, so it is not +# possible to set a different password in masters and slaves instances +# if you want to be able to monitor these instances with Sentinel. +# +# However you can have Redis instances without the authentication enabled +# mixed with Redis instances requiring the authentication (as long as the +# password set is the same for all the instances requiring the password) as +# the AUTH command will have no effect in Redis instances with authentication +# switched off. +# +# Example: +# +# sentinel auth-pass mymaster MySUPER--secret-0123passw0rd + # sentinel down-after-milliseconds # # Number of milliseconds the master (or any attached slave or sentinel) should @@ -52,6 +71,27 @@ sentinel parallel-syncs mymaster 1 # Default is 15 minutes. sentinel failover-timeout mymaster 900000 +# SCRIPTS EXECTION +# +# sentinel notification-script and sentinel reconfig-script are used in order +# to configure scripts that are called to notify the system administrator +# or to reconfigure clients after a failover. The scripts are executed +# with the following rules for error handling: +# +# If script exists with "1" the execution is retried later (up to a maximum +# number of times currently set to 10). +# +# If script exists with "2" (or an higher value) the script execution is +# not retried. +# +# If script terminates because it receives a signal the behavior is the same +# as exit code 1. +# +# A script has a maximum running time of 60 seconds. After this limit is +# reached the script is terminated with a SIGKILL and the execution retried. + +# NOTIFICATION SCRIPT +# # sentinel notification-script # # Call the specified notification script for any sentienl event that is @@ -63,11 +103,48 @@ sentinel failover-timeout mymaster 900000 # The script is called with just two arguments: the first is the event type # and the second the event description. # -# The script must be exits and executable in order for sentinel to start if +# The script must exist and be executable in order for sentinel to start if # this option is provided. # # Example: # # sentinel notification-script mymaster /var/redis/notify.sh +# CLIENTS RECONFIGURATION SCRIPT +# +# sentinel client-reconfig-script +# +# When the failover starts, ends, or is aborted, a script can be called in +# order to perform application-specific tasks to notify the clients that the +# configuration has changed and the master is at a different address. +# +# The script is called in the following cases: +# +# Failover started (a slave is already promoted) +# Failover finished (all the additional slaves already reconfigured) +# Failover aborted (in that case the script was previously called when the +# failover started, and now gets called again with swapped +# addresses). +# +# The following arguments are passed to the script: +# +# +# +# is "start", "end" or "abort" +# is either "leader" or "observer" +# +# The arguments from-ip, from-port, to-ip, to-port are used to communicate +# the old address of the master and the new address of the elected slave +# (now a master) in the case state is "start" or "end". +# +# For abort instead the "from" is the address of the promoted slave and +# "to" is the address of the original master address, since the failover +# was aborted. +# +# This script should be resistant to multiple invocations. +# +# Example: +# +# sentinel client-reconfig-script mymaster /var/redis/reconfig.sh +