It ist described here how to configure it:
MariaDB 10.3 or later
Which file need to be edited? I couldn’t figure it out of the installation instruction.
grep -r "\[mysqld\]" /etc/
will tell you.
/etc/mysql/mariadb.conf.d/50-server.cnf in my case.
Why do they not provide that information at the installation instruction?
Practically, I believe quite some people still use mysql instead of mariadb, not to mention other variation and/or version that use different path and file name.
Reasonably, people doing this level of “hack” should know what they are doing and what they have done. No one will put [mysqld] into /etc/fstab, right?
In this case it is always a good idea to check the manual of the software you want to configure