linux系统下mysql跳过密码验证登录

修改MySQL的登录设置：  

# vi /etc/my.cnf  

在[mysqld]的段中加上一句：skip-grant-tables  

例如：  

[mysqld]  

datadir=/var/lib/mysql  

socket=/var/lib/mysql/mysql.sock  

skip-name-resolve  

skip-grant-tables  

保存并且退出vi。  

3．重新启动mysqld  

# /etc/init.d/mysqld restart  

Stopping MySQL: [ OK ]  

Starting MySQL: [ OK ]  

4．登录并修改MySQL的root密码  

# /usr/bin/mysql  

Welcome to the MySQL monitor. Commands end with ; or \g.  

Your MySQL connection id is 3 to server version: 3.23.56  

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.  

mysql> USE mysql ;  

Reading table information for completion of table and column names  

You can turn off this feature to get a quicker startup with -A Database changed  

mysql> UPDATE user SET Password = password ( ‘new-password’ ) WHERE User = ‘root’ ;  

Query OK, 0 rows affected (0.00 sec) Rows matched: 2 Changed: 0 Warnings: 0  

mysql> flush privileges ;  

Query OK, 0 rows affected (0.01 sec)  

mysql> quit  

Bye  

5．将MySQL的登录设置修改回来  

# vi /etc/my.cnf  

将刚才在[mysqld]的段中加上的skip-grant-tables删除  

保存并且退出vi。 

6．重新启动mysqld  

# /etc/init.d/mysqld restart  

Stopping MySQL: [ OK ]  

Starting MySQL: [ OK ]