今天yum安装MariaDB完成后,启动服务时一直报以下错误 Job for mariadb.service failed. See ‘systemctl status mariadb.service’ and ‘journalctl -xn’ for details. 然后卸了装,装了卸,还是不行.于是采用极端的方法. 使用非常极端的方法yum -qa | grep mariadb*; #然后卸载yum remove mariadb*;#把安装包全给删了yum -qa | grep mysql