centos7啓動MySQL時候忽然進不去Job for mysqld.service failed because the control process exited with error cod

mysql忽然進不去了，不知道什魔鬼 [root@localhost ~]# systemctl start mysqld.servicehtml Job for mysqld.service failed because the control process exited with error code. See "sys temctl status mysqld.service" and "

>>阅读原文<<