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nixpkgs/nixos/modules/services/web-apps/piwik-doc.xml
Florian Jacob adb03f32a1 nixos/piwik: Remove part about mail problems
Sending mail works out of the box as of resolution of #26611.
2017-08-30 22:05:01 +02:00

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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-piwik">
<title>Piwik</title>
<para>
Piwik is a real-time web analytics application.
This module configures php-fpm as backend for piwik, optionally configuring an nginx vhost as well.
</para>
<para>
An automatic setup is not suported by piwik, so you need to configure piwik itself in the browser-based piwik setup.
</para>
<section>
<title>Database Setup</title>
<para>
You also need to configure a MariaDB or MySQL database and -user for piwik yourself,
and enter those credentials in your browser.
You can use passwordless database authentication via the UNIX_SOCKET authentication plugin
with the following SQL commands:
<programlisting>
# For MariaDB
INSTALL PLUGIN unix_socket SONAME 'auth_socket';
CREATE DATABASE piwik;
CREATE USER 'piwik'@'localhost' IDENTIFIED WITH unix_socket;
GRANT ALL PRIVILEGES ON piwik.* TO 'piwik'@'localhost';
# For MySQL
INSTALL PLUGIN auth_socket SONAME 'auth_socket.so';
CREATE DATABASE piwik;
CREATE USER 'piwik'@'localhost' IDENTIFIED WITH auth_socket;
GRANT ALL PRIVILEGES ON piwik.* TO 'piwik'@'localhost';
</programlisting>
Then fill in <literal>piwik</literal> as database user and database name, and leave the password field blank.
This authentication works by allowing only the <literal>piwik</literal> unix user to authenticate as the
<literal>piwik</literal> database user (without needing a password), but no other users.
For more information on passwordless login, see
<link xlink:href="https://mariadb.com/kb/en/mariadb/unix_socket-authentication-plugin/" />.
</para>
<para>
Of course, you can use password based authentication as well, e.g. when the database is not on the same host.
</para>
</section>
<section>
<title>Backup</title>
<para>
You only need to take backups of your MySQL database and the
<filename>/var/lib/piwik/config/config.ini.php</filename> file.
Use a user in the <literal>piwik</literal> group or root to access the file.
For more information, see <link xlink:href="https://piwik.org/faq/how-to-install/faq_138/" />.
</para>
</section>
<section>
<title>Issues</title>
<itemizedlist>
<listitem>
<para>
Piwik's file integrity check will warn you.
This is due to the patches necessary for NixOS, you can safely ignore this.
</para>
</listitem>
<listitem>
<para>
Piwik will warn you that the JavaScript tracker is not writable.
This is because it's located in the read-only nix store.
You can safely ignore this, unless you need a plugin that needs JavaScript tracker access.
</para>
</listitem>
</itemizedlist>
</section>
<section>
<title>Using other Web Servers than nginx</title>
<para>
You can use other web servers by forwarding calls for <filename>index.php</filename> and
<filename>piwik.php</filename> to the <literal>/run/phpfpm-piwik.sock</literal> fastcgi unix socket.
You can use the nginx configuration in the module code as a reference to what else should be configured.
</para>
</section>
</chapter>