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doc: list repmgr.conf parameters relevant during switchover

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Ian Barwick
2018-01-08 11:13:39 +09:00
parent 6b223698c9
commit 6b70e8bbe6
1 changed files with 30 additions and 3 deletions
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33
doc/switchover.sgml
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@@ -55,7 +55,7 @@
</indexterm> </indexterm>
<title>Preparing for switchover</title> <title>Preparing for switchover</title>
<para> <para>
As mentioned above, success of the switchover operation depends on &repmgr; Success of the switchover operation depends on &repmgr;
being able to shut down the current primary server quickly and cleanly. being able to shut down the current primary server quickly and cleanly.
</para> </para>
<para> <para>
@@ -64,8 +64,7 @@
<programlisting> <programlisting>
repmgr -f /etc/repmgr.conf node service --list --action=stop repmgr -f /etc/repmgr.conf node service --list --action=stop
repmgr -f /etc/repmgr.conf node service --list --action=start repmgr -f /etc/repmgr.conf node service --list --action=start
repmgr -f /etc/repmgr.conf node service --list --action=restart repmgr -f /etc/repmgr.conf node service --list --action=restart</programlisting>
</programlisting>
</para> </para>
<note> <note>
<simpara> <simpara>
@@ -115,6 +114,34 @@
"pg_ctl -l /var/log/postgresql/startup.log -D '/var/lib/postgresql/data' -m fast -W stop" "pg_ctl -l /var/log/postgresql/startup.log -D '/var/lib/postgresql/data' -m fast -W stop"
</programlisting> </programlisting>
</para> </para>
<para>
Note that following parameters in <filename>repmgr.conf</filename> are relevant to the
switchover operation:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<literal>reconnect_attempts</literal>: number of times to check the original primary
for a clean shutdown after executing the shutdown command, before aborting
</simpara>
</listitem>
<listitem>
<simpara>
<literal>reconnect_interval</literal>: interval (in seconds) to check the original
primary for a clean shutdown after executing the shutdown command (up to a maximum
of <literal>reconnect_attempts</literal> tries)
</simpara>
</listitem>
<listitem>
<simpara>
<literal>replication_lag_critical</literal>:
if replication lag (in seconds) on the standby exceeds this value, the
switchover will be aborted (unless the <literal>-F/--force</literal> option
is provided)
</simpara>
</listitem>
</itemizedlist>
</para>
</sect1> </sect1>
<sect1 id="switchover-execution" xreflabel="Executing the switchover command"> <sect1 id="switchover-execution" xreflabel="Executing the switchover command">