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repmgrd: enable election rerun

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If "failover_validation_command" is set, and the command returns an error,
rerun the election.

There is a pause between reruns to avoid "churn"; the length of this pause
is controlled by the configuration parameter "election_rerun_interval".
This commit is contained in:
Ian Barwick
2019-03-12 14:03:59 +09:00
committed by Ian Barwick
parent 99923f5ffc
commit fc397f25f6
6 changed files with 68 additions and 6 deletions
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4
repmgr.conf.sample
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@@ -332,7 +332,9 @@ ssh_options='-q -o ConnectTimeout=10' # Options to append to "ssh"
#failover_validation_command= # Script to execute for an external mechanism to validate the failover
# decision made by repmgrd. One or both of the following parameter placeholders
# should be provided, which will be replaced by repmgrd with the appropriate
# value: %n (node_id), %a (node_name)
# value: %n (node_id), %a (node_name). *Must* be the same on all nodes.
#election_rerun_interval=15 # if "failover_validation_command" is set, and the command returns
# an error, pause the specified amount of seconds before rerunning the election.
#------------------------------------------------------------------------------
# service control commands