mysql中异常错误ERROR：2002的解决方法

最近在启动mysql 报错，错误提示如下：

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ERROR 2002 (HY000): Can't connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock' (2)

</div>排查过程

1、先查看 /etc/rc.d/init.d/mysqld status看看mysql是否已经启动.

另外看看是不是权限问题.

2、确定你的mysql.sock是不是在那个位置，

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mysql -u 你的mysql用户名 -p -S /var/lib/mysql/mysql.sock

</div>3、试试：service mysqld start

4、如果是权限问题，则先改变权限#chown -R mysql:mysql /var/lib/mysql

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[root@localhost ~]# /etc/init.d/mysqld start
启动 MySQL： [ 确定 ]
[root@localhost ~]# mysql -u root -p

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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

</div>原因是，/var/lib/mysql 的访问权限问题。

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shell> chown -R mysql:mysql /var/lib/mysql

</div>接着启动服务器

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shell> /etc/init.d/mysql start

</div>服务器正常启动后察看 /var/lib/mysql 自动生成mysql.sock文件。

但是我的问题仍然没有得到解决。

问题终于解决：

方法： 修改/etc/my.conf:

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[mysqld]
datadir=/usr/local/mysql/data
socket=/var/lib/mysql/mysql.sock

[mysql.server]
user=mysql
basedir=/usr/local/mysql

If there is not currently a section called [client], add one at the bottom of the file and copy the socket= line under the [mysqld] section such as:

[client]
socket=/var/lib/mysql/mysql.sock

发现依旧如此，运行/etc/init.d/mysql start报错：Starting MySQLCouldn't find MySQL manager or server是mysqld服务没启，运行/usr/local/mysql/bin/mysqld_safe &

问题解决。