解决 Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ 错误

安装完 MySQL ，进行运行测试，报 Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ 错误，

[root@localhost mysql]# /usr/local/mysql/bin/mysqld_safe
131206 22:42:51 mysqld_safe Logging to ‘/var/log/mysqld.log’.
131206 22:42:51 mysqld_safe Starting mysqld daemon with databases from /data/mysql/data
131206 22:42:57 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
[root@localhost mysql]# /usr/local/mysql/bin/mysql
ERROR 2002 (HY000): Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ (2)

检查一下 MySQL 的运行状态

[root@localhost mysql]# ps -ef | grep mysql
root     32092  2108  0 22:43 pts/0    00:00:00 grep mysql

查看 /tmp 文件夹的确没有 mysql.sock 文件，

通过 find 命令查找

[root@localhost /]# find / -name mysql.sock
/var/lib/mysql/mysql.sock

原来安装到 /var/lib/mysql/mysql.sock 这个位置啦，我们需要修改 my.cnf 文件

[root@localhost /]# vi /usr/local/mysql/my.cnf

[client]
character-set-server = utf8
port    = 3306
socket  = /var/lib/mysql/mysql.sock
……

保存之后即出，重新启动 MySQL 。

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