nixpkgs/nixos/modules/services/databases/postgresql.xml

<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.postgresql_9_4;
</programlisting>
   Note that you are required to specify the desired version of PostgreSQL
   (e.g. <literal>pkgs.postgresql_9_4</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>