C连接mysql出现错误：Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.soc

1、先通过：service mysqld status 查看mysql是否启动

（没装mysql service 也可通过 /etc/rc.d/init.d/mysqld status查看）

若没启动，则启动mysql：service mysqld start

2、方法： 修改/etc/my.conf:

[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

（注意：红色标记部分文件路径必须相同）

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 &