CentOS下忘记mysql密码的解决办法

一：停掉正在运行的 mysql

[root@Test01 ~]# service mysqld stop
若是没有把mysql加入服务，能够用/etc/init.d/mysql stop

二：使用 “–skip-grant-tables”参数从新启动mysql
[root@Test01 ~]# mysqld_safe --skip-grant-tables &
[1] 2584
Starting mysqld daemon with databases from /var/lib/mysql
三：用root账号登陆mysql
[root@Test01 ~]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.29-log MySQL Community Server (GPL)


四：改变用户数据库
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 -ADatabase changed
五：修改 密码 ，记得 密码 要用password()函数进行加密
mysql> update user set password=password('123456') where user='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings: 0
六：刷新权限表
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
七：退出mysql
mysql> quit
Bye
八：对mysql进行重启
[root@Test01 ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03 mysqld endedStopping MySQL: [ OK ]
Starting MySQL: [ OK ]
[1]+ Done mysqld_safe --skip-grant-tables
九：用更改过的密码从新登陆便可。
[root@Test01 ~]# mysql -u root -p Enter password: 123456 Welcome to the MySQL monitor.  Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.5.29-log MySQL Community Server (GPL) mysql>