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Further repmgrd documentation

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Ian Barwick
2017-10-05 14:32:57 +09:00
parent a4e79d33af
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doc/repmgrd-configuration.sgml
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@@ -47,5 +47,28 @@
<command>repmgr standby follow</command> will result in the node continuing to follow
the original primary.
</para>
<sect1 id="repmgrd-connection-settings">
<title>repmgrd connection settings</title>
<para>
In addition to the &repmgr; configuration settings, parameters in the
<varname>conninfo</varname> string influence how &repmgr; makes a network connection to
PostgreSQL. In particular, if another server in the replication cluster
is unreachable at network level, system network settings will influence
the length of time it takes to determine that the connection is not possible.
</para>
<para>
In particular explicitly setting a parameter for <literal>connect_timeout</literal>
should be considered; the effective minimum value of <literal>2</literal>
(seconds) will ensure that a connection failure at network level is reported
as soon as possible, otherwise depending on the system settings (e.g.
<varname>tcp_syn_retries</varname> in Linux) a delay of a minute or more
is possible.
</para>
<para>
For further details on <varname>conninfo</varname> network connection
parameters, see the
<ulink url="https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-PARAMKEYWORDS">PostgreSQL documentation</ulink>.
</para>
</sect1>
</chapter>