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linux mysql下忘記root密碼解決辦法

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1 修改MySQL的登錄設置


# vi /etc/my.cnf


在[mysqld]的中加上一句:skip-grant-tables

2 重新啟動mysqld


# /etc/init.d/mysqld restart

Stopping MySQL: [ OK ]

Starting MySQL: [ OK ]

3 登錄並修改MySQL的root密碼


# /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 將MySQL的登錄設置修改回來


# vi /etc/my.cnf
將剛才在[mysqld]的段中加上的skip-grant-tables刪除
保存並且退出vi。

5 重新啟動mysqld


# /etc/init.d/mysqld restart
Stopping MySQL: [ OK ]
Starting MySQL: [ OK ]

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linux mysql下忘記root密碼解決辦法