CentOS 7下MySQL服务启动失败该怎么解决

Question

报错如下，该怎么解决

[root@spark01 ~]# /etc/init.d/mysqld start
Starting mysqld (via systemctl):  Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.
                                                          [FAILED]