「 Failed to start MySQL Server 」というエラーで MySQL サービスを開始できません。

MySQL サービスを開始しようとすると、次のエラーが発生します。

• [root@rhel7-x64-template ~]# sudo systemctl start mysqld

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

  > Check journalctl -xe to 2019-10-31T08:36:59.942871Z 0 [ERROR] Could not create unix socket lock file
/var/run/mysqld/mysqld.sock.lock.
2019-10-31T08:36:59.942880Z 0 [ERROR] Unable to setup unix socket lock file.
2019-10-31T08:36:59.942886Z 0 [ERROR] Aborting
Mysql was unable to create unix socket lock file.identify error