如何重置mysql的密码

原文链接：http://www.javaarch.net/jiagoushi/702.htm

如何重置mysql的密码

如果知道密码，则通过以下方式修改；

	gaurav@gaurav:~$ mysql --user=root --pass mysql
	Enter password:
	 
	mysql> update user set Password=PASSWORD('new-password-here') WHERE User='root';
	Query OK, 2 rows affected (0.04 sec)
	Rows matched: 2  Changed: 2  Warnings: 0
	 
	mysql> flush privileges;
	Query OK, 0 rows affected (0.02 sec)
	 
	mysql> exit
	Bye
	
如果忘记密码，则先停止mysql，然后加上参数skip-grant-tables重新启动mysql server

	root@gaurav:~# /etc/init.d/mysql stop
	 
	Now you should start up the database in the background, via the mysqld_safe command:
	 
	root@gaurav:~# /usr/bin/mysqld_safe --skip-grant-tables &
	[1] 4271
	Starting mysqld daemon with databases from /var/lib/mysql
	mysqld_safe[6763]: started
	
然后登陆mysql，修改密码

	root@gaurav:~$ mysql --user=root mysql
	Enter password:
	 
	mysql> update user set Password=PASSWORD('new-password-here') WHERE User='root';
	Query OK, 2 rows affected (0.04 sec)
	Rows matched: 2  Changed: 2  Warnings: 0
	 
	mysql> flush privileges;
	Query OK, 0 rows affected (0.02 sec)
	 
	mysql> exit
	Bye

最后重启mysql server就可以了。

	root@gaurav:~# /etc/init.d/mysql start
	Starting MySQL database server: mysqld.
	Checking for corrupt, not cleanly closed and upgrade needing tables..
	
用新密码登陆验证下

	root@gaurav:~# mysql --user=root --pass=new-password-here
	Welcome to the MySQL monitor.  Commands end with ; or \g.
	Your MySQL connection id is 5 to server version: 5.0.24a-Debian_4-log
	 
	Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
	 
	mysql> exit
	Bye