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nixos/mysql: add release notes

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Izorkin 2020-05-05 10:51:17 +03:00
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nixos/doc/manual/release-notes/rl-2009.xml
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@ -61,6 +61,28 @@
This is to make it possible to use <literal>podman</literal> instead of <literal>docker</literal>.
</para>
</listitem>
<listitem>
<para>
MariaDB has been updated to 10.4, MariaDB Galera to 26.4.
Before you upgrade, it would be best to take a backup of your database.
For MariaDB Galera Cluster, see <link xlink:href="https://mariadb.com/kb/en/upgrading-from-mariadb-103-to-mariadb-104-with-galera-cluster/">Upgrading
from MariaDB 10.3 to MariaDB 10.4 with Galera Cluster</link> instead.
Before doing the upgrade read <link xlink:href="https://mariadb.com/kb/en/upgrading-from-mariadb-103-to-mariadb-104/#incompatible-changes-between-103-and-104">Incompatible
Changes Between 10.3 and 10.4</link>.
After the upgrade you will need to run <literal>mysql_upgrade</literal>.
MariaDB 10.4 introduces a number of changes to the authentication process, intended to make things easier and more
intuitive. See <link xlink:href="https://mariadb.com/kb/en/authentication-from-mariadb-104/">Authentication from MariaDB 10.4</link>.
unix_socket auth plugin does not use a password, and uses the connecting user's UID instead. When a new MariaDB data directory is initialized, two MariaDB users are
created and can be used with new unix_socket auth plugin, as well as traditional mysql_native_password plugin: root@localhost and mysql@localhost. To actually use
the traditional mysql_native_password plugin method, one must run the following:
<programlisting>
services.mysql.initialScript = pkgs.writeText "mariadb-init.sql" ''
ALTER USER root@localhost IDENTIFIED VIA mysql_native_password USING PASSWORD("verysecret");
'';
</programlisting>
When MariaDB data directory is just upgraded (not initialized), the users are not created or modified.
</para>
</listitem>
</itemizedlist>
</section>