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repmgrd: add option "connection_check_type"

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This enable selection of the method repmgrd uses to check whether the upstream
node is available. Possible values are:

 - "ping" (default): uses PQping() to check server availability
 - "connection":  executes a query on the connection to check server
   availability (similar to repmgr3.x).
This commit is contained in:
Ian Barwick
2019-03-06 12:07:30 +09:00
parent 4f83111033
commit 63f7ad546e
11 changed files with 150 additions and 23 deletions
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12
doc/appendix-release-notes.sgml
View File

@@ -160,7 +160,17 @@ REPMGRD_OPTS="--daemonize=false"</programlisting>
the absence of a running <application>repmgrd</application>.
</para>
</listitem>
<listitem>
<para>
Add option <option>connection_check_type</option> to enable selection of the method
<application>repmgrd</application> uses to determine whether the upstream node is available.
</para>
<para>
Possible values are <literal>ping</literal> (default; uses <command>PQping()</command> to
determine server availability); and <literal>connection</literal> (determines server availability
by executing an SQL statement on the node via the existing connection).
</para>
</listitem>
</itemizedlist>
</para>
</sect2>

26
doc/repmgrd-configuration.sgml
View File

@@ -101,6 +101,32 @@
<command>repmgr standby follow</command> will result in the node continuing to follow
the original primary.
</para>
<para>
<indexterm>
<primary>connection_check_type</primary>
</indexterm>
Additionally, the option <option>connection_check_type</option> to enable selection of the method
<application>repmgrd</application> uses to determine whether the upstream node is available.
</para>
<para>
Possible values are:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
<literal>ping</literal> (default) - uses <command>PQping()</command> to
determine server availability
</simpara>
</listitem>
<listitem>
<simpara>
<literal>connection</literal> - determines server availability
by executing an SQL statement on the node via the existing connection
</simpara>
</listitem>
</itemizedlist>
</para>
</sect2>
<sect2 id="postgresql-service-configuration">