mariadb.serviceJob for mariadb.service failed because the control process exited with error code

 mariadb.serviceJob for mariadb.service failed because the control process exited with error code.
See "systemctl status mariadb.service" and "journalctl -xe" for details    

安全啓動：

/usr/local/mariadb/bin/mysqld_safe  --defaults-file=/etc/my.cnf  --datadir=/usr/local/mariadb/var  --pid-file=/usr/local/mariadb/var/mariadb.pid  --user=root &