CentOS下忘記mysql密碼的解決辦法

一：停掉正在運行的 mysql

[root@Test01 ~]# service mysqld stop
若是沒有把mysql加入服務，能夠用/etc/init.d/mysql stop

二：使用 「–skip-grant-tables」參數從新啓動mysql
[root@Test01 ~]# mysqld_safe --skip-grant-tables &
[1] 2584
Starting mysqld daemon with databases from /var/lib/mysql
三：用root賬號登陸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：改變用戶數據庫
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 密碼 ，記得 密碼 要用password()函數進行加密
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：刷新權限表
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
七：退出mysql
mysql> quit
Bye
八：對mysql進行重啓
[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：用更改過的密碼從新登陸便可。
[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>