1.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-grant-tables 保存并且退出vi。
2.新启动mysqld
# /etc/init.d/mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]
3.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
4．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。
5．重新启动mysqld
# /etc/init.d/mysqld restart