Comment # 2 on bug 1182828 from Danilo Spinella

If you have an instance named "node1", you should enable the service
"mariadb@node1.service" using systemctl. Then the configuration
/etc/mynode1.cnf will be read for this instance.

In the page you linked you can find further instructions:

https://www.suse.com/support/kb/doc/?id=000019469

Please re-open this bug if you have any problem when reading the configuration.