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Merge pull request #51053 from Ma27/draft-nextcloud-module-docs

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nixos/nextcloud: add basic module documentation and warn about current upgrading issues
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Florian Klink 2018-12-16 12:16:47 +01:00 committed by GitHub
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2
nixos/modules/services/web-apps/nextcloud.nix
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};
})
]);
meta.doc = ./nextcloud.xml;
}

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nixos/modules/services/web-apps/nextcloud.xml Normal file
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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-services-nextcloud">
<title>Nextcloud</title>
<para>
<link xlink:href="https://nextcloud.com/">Nextcloud</link> is an open-source, self-hostable cloud
platform. The server setup can be automated using
<link linkend="opt-services.nextcloud.enable">services.nextcloud</link>. A desktop client is packaged
at <literal>pkgs.nextcloud-client</literal>.
</para>
<section xml:id="module-services-nextcloud-basic-usage">
<title>Basic usage</title>
<para>
Nextcloud is a PHP-based application which requires an HTTP server
(<literal><link linkend="opt-services.nextcloud.enable">services.nextcloud</link></literal> optionally supports
<literal><link linkend="opt-services.nginx.enable">services.nginx</link></literal>) and a database
(it's recommended to use <literal><link linkend="opt-services.postgresql.enable">services.postgresql</link></literal>).
</para>
<para>
A very basic configuration may look like this:
<programlisting>{ pkgs, ... }:
{
services.nextcloud = {
<link linkend="opt-services.nextcloud.enable">enable</link> = true;
<link linkend="opt-services.nextcloud.hostName">hostName</link> = "nextcloud.tld";
<link linkend="opt-services.nextcloud.nginx.enable">nginx.enable</link> = true;
config = {
<link linkend="opt-services.nextcloud.config.dbtype">dbtype</link> = "pgsql";
<link linkend="opt-services.nextcloud.config.dbuser">dbuser</link> = "nextcloud";
<link linkend="opt-services.nextcloud.config.dbhost">dbhost</link> = "/tmp"; # nextcloud will add /.s.PGSQL.5432 by itself
<link linkend="opt-services.nextcloud.config.dbname">dbname</link> = "nextcloud";
<link linkend="opt-services.nextcloud.config.adminpassFile">adminpassFile</link> = "/path/to/admin-pass-file";
<link linkend="opt-services.nextcloud.config.adminuser">adminuser</link> = "root";
};
};
services.postgresql = {
<link linkend="opt-services.postgresql.enable">enable</link> = true;
<link linkend="opt-services.postgresql.initialScript">initialScript</link> = pkgs.writeText "psql-init" ''
CREATE ROLE nextcloud WITH LOGIN;
CREATE DATABASE nextcloud WITH OWNER nextcloud;
'';
};
# ensure that postgres is running *before* running the setup
systemd.services."nextcloud-setup" = {
requires = ["postgresql.service"];
after = ["postgresql.service"];
};
<link linkend="opt-networking.firewall.allowedTCPPorts">networking.firewall.allowedTCPPorts</link> = [ 80 443 ];
}</programlisting>
</para>
<para>
The options <literal>hostName</literal> and <literal>nginx.enable</literal> are used internally to configure an
HTTP server using <literal><link xlink:href="https://php-fpm.org/">PHP-FPM</link></literal> and <literal>nginx</literal>.
The <literal>config</literal> attribute set is used for the <literal>config.php</literal> which is used
for the application's configuration.
<emphasis>Beware: this isn't entirely pure since the config is modified by the application's runtime!</emphasis>
</para>
<para>
In case the application serves multiple hosts (those are checked with
<literal><link xlink:href="http://php.net/manual/en/reserved.variables.server.php">$_SERVER['HTTP_HOST']</link></literal>)
those can be added using
<literal><link linkend="opt-services.nextcloud.config.extraTrustedDomains">services.nextcloud.config.extraTrustedDomains</link></literal>.
</para>
</section>
<section xml:id="module-services-nextcloud-pitfalls-during-upgrade">
<title>Pitfalls</title>
<para>
Unfortunately Nextcloud appears to be very stateful when it comes to managing its own configuration. The
config file lives in the home directory of the <literal>nextcloud</literal> user (by default
<literal>/var/lib/nextcloud/config/config.php</literal>) and is also used to track several
states of the application (e.g. whether installed or not).
</para>
<para>
Right now changes to the <literal>services.nextcloud.config</literal> attribute set won't take effect
after the first install
(except <literal><link linkend="opt-services.nextcloud.config.extraTrustedDomains">services.nextcloud.config.extraTrustedDomains</link></literal>) since the actual configuration
file is generated by the NextCloud installer which also sets up critical parts such as the database
structure.
</para>
<para>
<emphasis>Warning: don't delete <literal>config.php</literal>! This file tracks the application's state and a deletion can cause unwanted side-effects!</emphasis>
</para>
<para>
<emphasis>Warning: don't rerun <literal>nextcloud-occ maintenance:install</literal>! This command tries to install the application and can cause unwanted side-effects!</emphasis>
</para>
<para>
The issues are known and reported in <link xlink:href="https://github.com/NixOS/nixpkgs/issues/49783">#49783</link>, for now it's unfortunately necessary to manually work around these issues.
</para>
</section>
</chapter>