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在Linux安裝MySQL有時候會出現[mysql]ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) 這樣的錯誤，具體解決辦法如下：

[[email protected] ~]# rm -rf /var/lib/mysql/*
[[email protected] ~]# rm /var/lock/subsys/mysqld
rm: remove regular empty file `/var/lock/subsys/mysqld'? y
[

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[[email protected] /]# mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
[

##########儲存退出後，
##########重啟mysql
[[email protected] /]# service mysqld restart
Shutting down MySQL.                                       [  OK  ]
Starting MySQL.                                            [  OK  ]

[[email protected] /]# mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[[email protected] /]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.45 MySQL Community Server (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'rootpassword' WITH GRANT OPTION;

Query OK, 0 rows affected (0.00 sec)

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY 'rootpassword' WITH GRANT OPTION;

exit
Bye
[[email protected] /]# mysql -u root -p

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當用戶在執行mysql時報錯
"ERROR 2002 (HY000): Cant connect to local MySQL server through socket /tmp/mysql.sock (2)"
 
原因是由於mysql 的mysql.sock 預設是在/var/lib/mysql/mysql.sock下，但linux系統總是去/tmp/mysql.sock查詢，如果mysql.sock不存在，系統就會報錯。
 
解決辦法：
1.直接指定mysql通道
[[email protected] ~]# find / -name mysql.sock
/var/lib/mysql/mysql.sock
[[email protected] ~]# mysql --socket=/var/lib/mysql/mysql.sock
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2 to server version: 5.0.22
 
Type help; or \h for help. Type \c to clear the buffer.
 
mysql>
 
2. 為mysql.sock建立軟連線(類似快捷方式)
[[email protected] ~]# ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
 
[[email protected] ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3 to server version: 5.0.22
 
Type help; or \h for help. Type \c to clear the buffer.
 
mysql>