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<chapter xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="module-postgresql">
<title>PostgreSQL</title>
<!-- FIXME: render nicely -->
<!-- FIXME: source can be added automatically -->
<para>
<emphasis>Source:</emphasis>
<filename>modules/services/databases/postgresql.nix</filename>
</para>
<para>
<emphasis>Upstream documentation:</emphasis>
<link xlink:href="http://www.postgresql.org/docs/"/>
</para>
<!-- FIXME: more stuff, like maintainer? -->
<para>
PostgreSQL is an advanced, free relational database.
<!-- MORE -->
</para>
<section xml:id="module-services-postgres-configuring">
<title>Configuring</title>
<para>
To enable PostgreSQL, add the following to your
<filename>configuration.nix</filename>:
<programlisting>
<xref linkend="opt-services.postgresql.enable"/> = true;
<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql94;
</programlisting>
Note that you are required to specify the desired version of PostgreSQL
(e.g. <literal>pkgs.postgresql94</literal>). Since upgrading your PostgreSQL
version requires a database dump and reload (see below), NixOS cannot
provide a default value for
<xref linkend="opt-services.postgresql.package"/> such as the most recent
release of PostgreSQL.
</para>
<!--
<para>After running <command>nixos-rebuild</command>, you can verify
whether PostgreSQL works by running <command>psql</command>:
<screen>
$ psql
psql (9.2.9)
Type "help" for help.
alice=>
</screen>
-->
<para>
By default, PostgreSQL stores its databases in
<filename>/var/db/postgresql</filename>. You can override this using
<xref linkend="opt-services.postgresql.dataDir"/>, e.g.
<programlisting>
<xref linkend="opt-services.postgresql.dataDir"/> = "/data/postgresql";
</programlisting>
</para>
</section>
<section xml:id="module-services-postgres-upgrading">
<title>Upgrading</title>
<para>
FIXME: document dump/upgrade/load cycle.
</para>
</section>
<section xml:id="module-services-postgres-options">
<title>Options</title>
<para>
A complete list of options for the PostgreSQL module may be found
<link linkend="opt-services.postgresql.enable">here</link>.
</para>
</section>
</chapter>
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