Почему не стартует mysql?

# systemctl status mariadb ● mariadb.service — MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled) Active: failed (Result: exit-code) since Чт 2017-08-17 12:11:59 MSK; 1min 50s ago Process: 18269 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=0/SUCCESS) Process: 18266 ExecStart=/usr/bin/mysqld_safe --basedir=/usr (code=exited, status=1/FAILURE) Process: 18238 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS) Main PID: 18266 (code=exited, status=1/FAILURE) авг 17 12:11:59 SRV-T-MON-002 systemd[1]: Starting MariaDB database server… авг 17 12:11:59 SRV-T-MON-002 systemd[1]: Started MariaDB database server. авг 17 12:11:59 SRV-T-MON-002 mysqld_safe[18266]: 170817 12:11:59 mysqld_s… авг 17 12:11:59 SRV-T-MON-002 mysqld_safe[18266]: 170817 12:11:59 mysqld_s… авг 17 12:11:59 SRV-T-MON-002 systemd[1]: mariadb.service: main process e...E авг 17 12:11:59 SRV-T-MON-002 systemd[1]: Unit mariadb.service entered fa… авг 17 12:11:59 SRV-T-MON-002 systemd[1]: mariadb.service failed. Hint: Some lines were ellipsized, use -l to show in full.