Hmm, need to check why MariaDB got installed

The zypper dup has installed MariaDB; now I need to figure out which dependency did this, as I’m not happy with the update message:

Message from package mariadb:

You just installed MySQL server for the first time.

You can start it using:
 rcmysql start

During first start empty database will be created for your automatically.

PLEASE REMEMBER TO SET A PASSWORD FOR THE MariaDB root USER !
To do so, start the server, then issue the following commands:

'/usr/bin/mysqladmin' -u root password 'new-password'
'/usr/bin/mysqladmin' -u root -h misibook password 'new-password'

Alternatively you can run:
'/usr/bin/mysql_secure_installation'

which will also give you the option of removing the test
databases and anonymous user created by default. This is
strongly recommended for production servers.

–jeroen