mysql修改root密碼

標籤：

1. 首先停止mysql服務

/etc/init.d/mysql stop

     2. 接著採用忽略密碼認證模式重新建立一個mysql服務

 mysqld --user=mysql --skip-grant-tables --skip-networking & 

     成功啟動後返回PID及其它啟動資訊

[1] 3591 root@webserver:/home/webmaster# 121005 2:59:27 [Note] Plugin ‘FEDERATED‘ is disabled. 121005 2:59:27 InnoDB: The InnoDB memory heap is disabled 121005 2:59:27 InnoDB: Mutexes and rw_locks use GCC atomic builtins 121005 2:59:27 InnoDB: Compressed tables use zlib 1.2.3.4 121005 2:59:27 InnoDB: Initializing buffer pool, size = 128.0M 121005 2:59:27 InnoDB: Completed initialization of buffer pool 121005 2:59:27 InnoDB: highest supported file format is Barracuda. 121005 2:59:27 InnoDB: Waiting for the background threads to start 121005 2:59:28 InnoDB: 1.1.8 started; log sequence number 1595685 121005 2:59:28 [Note] mysqld: ready for connections. Version: ‘5.5.24-0ubuntu0.12.04.1‘ socket: ‘/var/run/mysqld/mysqld.sock‘ port: 0 (Ubuntu) 

 

     3. 串連到mysql系統庫

 mysql -u root mysql 

     4. 串連到mysql庫後直接修改root帳號的密碼為新的密碼‘123456‘

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql> update user set Password=PASSWORD(‘123456‘) where user=‘root‘; Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0 mysql> FLUSH PRIVILEGES; mysql> quit; Bye 

 

     5. 中止mysql服務進程

kill 3591

     6.正常啟動mysql服務，並用新密碼登入mysql伺服器

service mysql start

 

mysql修改root密碼