De repente, depois de simplesmente adicionar algumas tabelas ao banco de dados dentro da instalação ... o serviço não será iniciado. Qualquer ajuda bem-vinda.
systemctl start mariadb Job for mariadb.service failed. See 'systemctl status mariadb.service' and 'journalctl -xn' for details.
systemctl status mariadb mariadb.service - MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled) Active: failed (Result: exit-code) since Wed 2015-01-07 22:47:01 EST; 9s ago Process: 19037 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID (code=exited, status=1/FAILURE) Process: 19036 ExecStart=/usr/bin/mysqld_safe --basedir=/usr (code=exited, status=0/SUCCESS) Process: 19009 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n (code=exited, status=0/SUCCESS) Main PID: 19036 (code=exited, status=0/SUCCESS) Jan 07 22:47:00 JX-Store systemd[1]: Starting MariaDB database server... Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'. Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended Jan 07 22:47:01 JX-Store systemd[1]: mariadb.service: control process exited, code=exited status=1 Jan 07 22:47:01 JX-Store systemd[1]: Failed to start MariaDB database server. Jan 07 22:47:01 JX-Store systemd[1]: Unit mariadb.service entered failed state.
Jan 07 22:47:00 JX-Store systemd[1]: Starting MariaDB database server... -- Subject: Unit mariadb.service has begun with start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit mariadb.service has begun starting up. Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'. Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql Jan 07 22:47:00 JX-Store mysqld_safe[19036]: 150107 22:47:00 mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended Jan 07 22:47:01 JX-Store systemd[1]: mariadb.service: control process exited, code=exited status=1 Jan 07 22:47:01 JX-Store systemd[1]: Failed to start MariaDB database server. -- Subject: Unit mariadb.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit mariadb.service has failed. -- -- The result is failed. Jan 07 22:47:01 JX-Store systemd[1]: Unit mariadb.service entered failed state.
mariadb.log
150107 22:47:00 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql 150107 22:47:00 InnoDB: The InnoDB memory heap is disabled 150107 22:47:00 InnoDB: Mutexes and rw_locks use GCC atomic builtins 150107 22:47:00 InnoDB: Compressed tables use zlib 1.2.7 150107 22:47:00 InnoDB: Using Linux native AIO 150107 22:47:00 InnoDB: Initializing buffer pool, size = 128.0M InnoDB: mmap(137756672 bytes) failed; errno 12 150107 22:47:00 InnoDB: Completed initialization of buffer pool 150107 22:47:00 InnoDB: Fatal error: cannot allocate memory for the buffer pool 150107 22:47:00 [ERROR] Plugin 'InnoDB' init function returned error. 150107 22:47:00 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 150107 22:47:00 [ERROR] mysqld: Out of memory (Needed 128917504 bytes) 150107 22:47:00 [ERROR] mysqld: Out of memory (Needed 96681984 bytes) 150107 22:47:00 [Note] Plugin 'FEEDBACK' is disabled. 150107 22:47:00 [ERROR] Unknown/unsupported storage engine: InnoDB 150107 22:47:00 [ERROR] Aborting 150107 22:47:00 [Note] /usr/libexec/mysqld: Shutdown complete 150107 22:47:00 mysqld_safe mysqld from pid file /var/run/mariadb/mariadb.pid ended
A questão é que o sistema não pode atribuir nenhuma memória ao processo para poder iniciar, você precisa parar alguns outros processos para que a memória fique livre para ser alocada para o MariaDB ou você precise adicionar mais memória RAM ou espaço SWAP ao servidor para que os processos possam ser iniciados corretamente.