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doc: update documentation of "promote_command" and "service_promote_command"

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The documentation implied it would override "promote_command", which is
not the case.

"promote_command" is used by repmgrd to execute "repmgr standby promote"
(either directly or via a custom script).

"service_promote_command" can be set to specify a package-level service
command to promote the local PostgreSQL instance from standby to primary,
e.g. Debian's pg_ctlcluster. If set, this will be executed by "repmgr standby promote".

Also update code comments to clarify usage.

Related to GitHub #473.
This commit is contained in:
Ian Barwick
2018-07-16 14:40:04 +09:00
parent 69782cf703
commit 63242e2277
4 changed files with 52 additions and 22 deletions
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14
repmgr.conf.sample
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@@ -280,11 +280,11 @@ ssh_options='-q -o ConnectTimeout=10' # Options to append to "ssh"
# primary (or other upstream node)
#reconnect_interval=10 # Interval between attempts to reconnect to an unreachable
# primary (or other upstream node)
#promote_command= # command to execute when promoting a new primary; use something like:
#promote_command= # command repmgrd executes when promoting a new primary; use something like:
#
# repmgr standby promote -f /etc/repmgr.conf
#
#follow_command= # command to execute when instructing a standby to follow a new primary;
#follow_command= # command repmgrd executes when instructing a standby to follow a new primary;
# use something like:
#
# repmgr standby follow -f /etc/repmgr.conf -W --upstream-node-id=%n
@@ -338,11 +338,11 @@ ssh_options='-q -o ConnectTimeout=10' # Options to append to "ssh"
#service_stop_command = ''
#service_restart_command = ''
#service_reload_command = ''
#service_promote_command = '' # Note: this overrides any value contained in the setting
# "promote_command". This is intended for systems which
# provide a package-level promote command, such as Debian's
# "pg_ctlcluster"
#service_promote_command = '' # This parameter is intended for systems which provide a
# package-level promote command, such as Debian's
# "pg_ctlcluster". *IMPORTANT*: it is *not* a substitute
# for "promote_command"; do not use "repmgr standby promote"
# (or a script which executes "repmgr standby promote") here.
#------------------------------------------------------------------------------
# Status check thresholds