Another MySQL daemon already running with the same unix socket.

故障现象：

[root@nebula42 ~]# service mysqld start

Another MySQL daemon already running with the same unix socket.

正在启动 mysqld： [失败]

解决办法：

[root@nebula42 ~]# cd /var/lib/mysql/

[root@nebula42 mysql]# ls

ibdata1 ib_logfile0 ib_logfile1 mysql mysql.sock

[root@nebula42 mysql]# rm -rf mysql.sock

[root@nebula42 mysql]# ls

cniaas ibdata1 ib_logfile0 ib_logfile1 mysql

[root@nebula42 mysql]# service mysqld start

正在启动 mysqld： [确定]

[root@nebula42 mysql]#