mirror of
https://github.com/postgres/postgres.git
synced 2025-05-01 01:04:50 +03:00
d27323db7c
Author: Justin Pryzby Reviewed-by: Robert Haas Discussion: https://postgr.es/m/20220411020336.GB26620@telsasoft.com
86 lines
3.0 KiB
Plaintext
86 lines
3.0 KiB
Plaintext
<!-- doc/src/sgml/basebackup-to-shell.sgml -->
|
|
|
|
<sect1 id="basebackup-to-shell" xreflabel="basebackup_to_shell">
|
|
<title>basebackup_to_shell</title>
|
|
|
|
<indexterm zone="basebackup-to-shell">
|
|
<primary>basebackup_to_shell</primary>
|
|
</indexterm>
|
|
|
|
<para>
|
|
<filename>basebackup_to_shell</filename> adds a custom basebackup target
|
|
called <literal>shell</literal>. This makes it possible to run
|
|
<literal>pg_basebackup --target=shell</literal> or, depending on how this
|
|
module is configured,
|
|
<literal>pg_basebackup --target=shell:DETAIL_STRING</literal>, and cause
|
|
a server command chosen by the server administrator to be executed for
|
|
each tar archive generated by the backup process. The command will receive
|
|
the contents of the archive via standard input.
|
|
</para>
|
|
|
|
<para>
|
|
This module is primarily intended as an example of how to create a new
|
|
backup targets via an extension module, but in some scenarios it may be
|
|
useful for its own sake.
|
|
In order to function, this module must be loaded via
|
|
<xref linkend="guc-shared-preload-libraries"/> or
|
|
<xref linkend="guc-local-preload-libraries"/>.
|
|
</para>
|
|
|
|
<sect2>
|
|
<title>Configuration Parameters</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>
|
|
<varname>basebackup_to_shell.command</varname> (<type>string</type>)
|
|
<indexterm>
|
|
<primary><varname>basebackup_to_shell.command</varname> configuration parameter</primary>
|
|
</indexterm>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The command which the server should execute for each archive generated
|
|
by the backup process. If <literal>%f</literal> occurs in the command
|
|
string, it will be replaced by the name of the archive (e.g.
|
|
<literal>base.tar</literal>). If <literal>%d</literal> occurs in the
|
|
command string, it will be replaced by the target detail provided by
|
|
the user. A target detail is required if <literal>%d</literal> is
|
|
used in the command string, and prohibited otherwise. For security
|
|
reasons, it may contain only alphanumeric characters. If
|
|
<literal>%%</literal> occurs in the command string, it will be replaced
|
|
by a single <literal>%</literal>. If <literal>%</literal> occurs in
|
|
the command string followed by any other character or at the end of the
|
|
string, an error occurs.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>
|
|
<varname>basebackup_to_shell.required_role</varname> (<type>string</type>)
|
|
<indexterm>
|
|
<primary><varname>basebackup_to_shell.required_role</varname> configuration parameter</primary>
|
|
</indexterm>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
The role required in order to make use of the <literal>shell</literal>
|
|
backup target. If this is not set, any replication user may make use of
|
|
the <literal>shell</literal> backup target.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</sect2>
|
|
|
|
<sect2>
|
|
<title>Author</title>
|
|
|
|
<para>
|
|
Robert Haas <email>rhaas@postgresql.org</email>
|
|
</para>
|
|
</sect2>
|
|
|
|
</sect1>
|