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repmgr: add parameter "shutdown_check_timeout"

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Previously, "repmgr standby switchover" used the configuration file parameters
"reconnect_interval" and "reconnect_attempts" to define a timeout to determine
whether the current primary (demotion candidate) has shut down.

However, these parameters are intended for primary failure detection and are
generally lower in value, while a controlled shutdown may take longer, resulting
in the switchover being aborted as repmgr was not waiting long enough.

To prevent this happening, parameter "shutdown_check_timeout" has been added.
This complements the existing "standby_reconnect_timeout" parameter used
by "repmgr standby switchover".

Implements GitHub #504.
This commit is contained in:
Ian Barwick
2018-09-25 11:30:01 +09:00
parent 80bef0eb28
commit 38e3aae053
7 changed files with 34 additions and 20 deletions
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2
repmgr.conf.sample
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@@ -231,6 +231,8 @@ ssh_options='-q -o ConnectTimeout=10' # Options to append to "ssh"
# These settings apply when switching roles between a primary and a standby
# ("repmgr standby switchover").
#shutdown_check_timeout=60 # The max length of time (in seconds) to wait for the demotion
# candidate (current primary) to shut down
#standby_reconnect_timeout=60 # The max length of time (in seconds) to wait
# for the demoted standby to reconnect to the promoted
# primary (note: this value should be equal to or greater