Centos系統mysql 忘記root用戶的密碼

 

Centos系統mysql 忘記root用戶的密碼：

第一步：(停掉正在運行的mysql)
[root@CentOs5 ~]# service mysqld stop 
Stopping MySQL:                                            [  OK  ]

 

第二步：使用 「--skip-grant-tables」參數從新啓動mysql
[root@CentOs5 ~]# mysqld_safe --skip-grant-tables &
[1] 23810
[root@CentOs5 ~]# Starting mysqld daemon with databases from /var/lib/mysql

 

第三步：用賬號登陸mysql
[root@CentOs5 ~]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.77 Source distribution

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

 

第四步：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 -A

Database changed

 

第五步：修改密碼，記得密碼要用password()函數進行加密，必定不要忘記！！！
mysql> update user set password=password('admin123') where user='root';
Query OK, 1 row affected (0.04 sec)
Rows matched: 1  Changed: 1  Warnings: 0

 

第六步：刷新權限表
mysql> flush previleges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'previleges' at line 1
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

 

第七步：退出mysql
mysql> quit
Bye

 

第八步：對mysql進行重啓
[root@CentOs5 ~]# service mysqld restart;
STOPPING server from pid file /var/run/mysqld/mysqld.pid
100421 13:44:03  mysqld ended

Stopping MySQL:                                            [  OK  ]
Starting MySQL:                                            [  OK  ]
[1]+  Done                    mysqld_safe --skip-grant-tables

 

第九步：用更改過的密碼從新登陸便可。
[root@CentOs5 ~]# mysql -u root -p
Enter password: admin123
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.0.77 Source distribution

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

mysql> quit Bye [root@CentOs5 ~]#