Job for mariadb.service failed because the control process exited with error code. See "systemctl status mariadb.service" and "journalctl -xe" for details.
看这个信息,没用,你应该查一下详细的具体报错。例如去查一下 tail -f -n 100 /var/log/messages 是否有相关报错,没有就去查查配置文件,究竟日志放在哪里