linux下mysql的root密码忘记解决

1．修改MySQL的登陆设置： 

   
   
   
   
   

    
    
    
    
    

   
   
   
   
   
# 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-grant-tables 

保存而且退出vi。 

2．从新启动mysqld 

   
   
   
   
   

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

   
   
   
   
   
# ./home/mariadb/bin/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ] 

3．登陆并修改MySQL的root密码 

   
   
   
   
   

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

   
   
   
   
   
# ./home/mariadb/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 

4．将MySQL的登陆设置修改回来 

   
   
   
   
   

    
    
    
    
    

   
   
   
   
   
# vi /etc/my.cnf 

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

保存而且退出vi。 

5．从新启动mysqld 

   
   
   
   
   

    
    
    
    
    

    
    
    
    
    

    
    
    
    
    

   
   
   
   
   
# ./home/mariadb/bin/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]

来自为知笔记(Wiz)