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115 lines
3.2 KiB
Plaintext
115 lines
3.2 KiB
Plaintext
<refentry id="repmgr-daemon-pause">
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<indexterm>
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<primary>repmgr daemon pause</primary>
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</indexterm>
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<indexterm>
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<primary>repmgrd</primary>
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<secondary>pausing</secondary>
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</indexterm>
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<refmeta>
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<refentrytitle>repmgr daemon pause</refentrytitle>
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</refmeta>
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<refnamediv>
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<refname>repmgr daemon pause</refname>
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<refpurpose>Instruct all &repmgrd; instances in the replication cluster to pause failover operations</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<para>
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This command can be run on any active node in the replication cluster to instruct all
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running &repmgrd; instances to "pause" themselves, i.e. take no
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action (such as promoting themselves or following a new primary) if a failover event is detected.
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</para>
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<para>
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This functionality is useful for performing maintenance operations, such as switchovers
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or upgrades, which might otherwise trigger a failover if &repmgrd;
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is running normally.
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</para>
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<note>
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<para>
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It's important to wait a few seconds after restarting PostgreSQL on any node before running
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<command>repmgr daemon pause</command>, as the &repmgrd; instance
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on the restarted node will take a second or two before it has updated its status.
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</para>
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</note>
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<para>
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<xref linkend="repmgr-daemon-unpause"> will instruct all previously paused &repmgrd;
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instances to resume normal failover operation.
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</para>
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</refsect1>
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<refsect1>
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<title>Execution</title>
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<para>
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<command>repmgr daemon pause</command> can be executed on any active node in the
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replication cluster. A valid <filename>repmgr.conf</filename> file is required.
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It will have no effect on previously paused nodes.
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</para>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<para>
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<programlisting>
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$ repmgr -f /etc/repmgr.conf daemon pause
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NOTICE: node 1 (node1) paused
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NOTICE: node 2 (node2) paused
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NOTICE: node 3 (node3) paused</programlisting>
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</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<variablelist>
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<varlistentry>
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<term><option>--dry-run</option></term>
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<listitem>
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<para>
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Check if nodes are reachable but don't pause &repmgrd;.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit codes</title>
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<para>
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One of the following exit codes will be emitted by <command>repmgr daemon unpause</command>:
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</para>
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<variablelist>
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<varlistentry>
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<term><option>SUCCESS (0)</option></term>
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<listitem>
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<para>
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&repmgrd; could be paused on all nodes.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>ERR_REPMGRD_PAUSE (26)</option></term>
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<listitem>
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<para>
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&repmgrd; could not be paused on one or mode nodes.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See also</title>
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<para>
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<xref linkend="repmgr-daemon-unpause">, <xref linkend="repmgr-daemon-status">
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</para>
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</refsect1>
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</refentry>
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