mysql,mysqldump,Mysqladmin,php链接mysql服务常会提示下面错误:php
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)python
当使用host参数为“localhost”链接Mysql服务时,会优先使用“sock文件”进行链接,而不是使用“IP:端口”进行链接,而Mysql尝试使用“sock文件”进行链接时,却没法获取“sock文件”的位置。
要解决此错误,有两种解决方法:mysql
一、查看mysql服务的socket文件位置:
mysql socket文件的位置是在/etc/my.cnf中设置的,cat /etc/my.cnf内容以下:sql
[mysqld]
datadir=/storage/db/mysql
socket=/storage/db/mysql/mysql.sock
user=mysql数据库
其中socket等于的路径就是socket文件的位置,咱们只要修改my.cnf文件,告诉mysql,mysqldump,mysqladmin等mysql服务的socket位置在哪里就能够。socket
二、修改my.cnf文件:
在/etc/my.cnf文件中添加以下内容,并重启mysqls服务,便可解决mysql,mysqldump,mysqladmin的“Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'”问题:函数
[mysqld]
datadir=/storage/db/mysql
socket=/storage/db/mysql/mysql.sock
[mysql]
socket=/storage/db/mysql/mysql.sock
[client]
socket=/storage/db/mysql/mysql.sock
[mysqldump]
socket=/storage/db/mysql/mysql.sock
[mysqladmin]
socket=/storage/db/mysql/mysql.sockfetch
三、php链接mysql服务提示"Can't connect to local MySQL server through socket..."的解决方法
有时候mysql服务正常运行,用户名密码也彻底正确,使用php的mysql_connect函数却链接不了mysql,调用php的mysql_error()函数提示“Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'”,这是咱们须要修改/etc/php.ini文件。
在/etc/php.ini文件中"[MySQL]"项下找到"mysql.default_socket",并设置其值指向正确的mysql服务socket文件便可,如:unix
[MySQL]
...省略n行...
mysql.default_socket = "/storage/db/mysql/mysql.sock"server
四、python链接mysql提示"Can't connect to local MySQL server through socket..."的解决方法:
在链接mysql数据库函数中指定socket文件,以下:
#!/usr/bin/python
from MySQLdb import connect
conn = connect(db="pzy", user="root", host="localhost", unix_socket="/storage/db/mysql/mysql.sock")
cur = conn.cursor()
count=cur.execute("show databases")
print 'there has %s dbs' % count
conn.commit()
conn.close()
5. php pdo链接mysql提示"Can't connect to local MySQL server through socket..."的解决方法:
一样在链接字符串添加mysql socket文件的位置便可,以下:
<?php$dsn = "mysql:host=localhost;dbname=pzy;unix_socket=/storage/db/mysql/mysql.sock";$db = new PDO($dsn, 'root', '');$rs = $db->query("SELECT * FROM qrtest");while($row = $rs->fetch()){ print_r($row);}?>