#  ps aux | grep -v grep | grep mysql

mysql      965  0.0  2.2 629204 46616 ?        Ssl  02:08   0:40 /usr/sbin/mysqld --wsrep_start_position=dff6e041-1005-11e8-85c9-965f304f37bc:131668

# systemctl status  mariadb.service

● mariadb.service - MariaDB 10.3.5 database server

   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)

  Drop-In: /etc/systemd/system/mariadb.service.d

           └─migrated-from-my.cnf-settings.conf

   Active: failed (Result: timeout) since Tue 2018-03-27 02:11:48 EEST; 15h ago

     Docs: man:mysqld(8)

           https://mariadb.com/kb/en/library/systemd/

  Process: 867 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= ||   VAR=`/usr/bin/galera_recovery`; [ $? -eq 0 ]   && systemctl set-environment _WSREP_START_POSITION=$VAR || exit 1 (code=exited, status=0/SUCCESS)

  Process: 860 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)

 Main PID: 965

   CGroup: /system.slice/mariadb.service

           └─965 /usr/sbin/mysqld --wsrep_start_position=dff6e041-1005-11e8-85c9-965f304f37bc:131668

Mar 27 02:08:44 localhost.localdomain systemd[1]: Starting MariaDB 10.3.5 database server...

Mar 27 02:08:48 localhost.localdomain sh[867]: WSREP: Recovered position dff6e041-1005-11e8-85c9-965f304f37bc:131668

Mar 27 02:08:48 localhost.localdomain mysqld[965]: 2018-03-27  2:08:48 0 [Note] /usr/sbin/mysqld (mysqld 10.3.5-MariaDB) starting as process 965 ...

Mar 27 02:10:18 t4w5.xentio.lan systemd[1]: mariadb.service start operation timed out. Terminating.

Mar 27 02:11:48 t4w5.xentio.lan systemd[1]: mariadb.service stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.

Mar 27 02:11:48 t4w5.xentio.lan systemd[1]: Failed to start MariaDB 10.3.5 database server.

Mar 27 02:11:48 t4w5.xentio.lan systemd[1]: Unit mariadb.service entered failed state.

Mar 27 02:11:48 t4w5.xentio.lan systemd[1]: mariadb.service failed.