Centos下忘记mysql的root密码的解决方法

时间:2023-07-17 17:41:44

Centos下忘记mysql的root密码的解决方法

一:(停掉正在运行的mysql)
[root@NetDakVPS ~]# service mysql
stop

二:使用
“--skip-grant-tables”
参数重新启动mysql
[root@NetDakVPS ~]# mysqld_safe --skip-grant-tables
&

[1] 23810
Starting mysqld daemon with databases from
/var/lib/mysql

三:用root帐号登录mysql
[root@NetDakVPS ~]# 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 distributionType 'help;'
or '\h' for help. Type '\c' to clear the buffer.

四:改变用户数据库
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:修改密码,记得密码要用password()函数进行加密
mysql> update user set password=password('netdak')
where user='root';

Query OK, 1 row affected (0.04 sec)
Rows matched: 1 Changed: 1 Warnings: 0
六:刷新权限表
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
七:退出mysql
mysql> quit
Bye
八:对mysql进行重启
[root@NetDakVPS ~]# service mysql 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:用更改过的密码重新登录即可。
[root@NetDakVPS ~]# mysql -u root -p
Enter password: netdak
Welcome to the MySQL monitor. Commands end with ; or
\g.

Your MySQL connection id is 2
Server version: 5.0.77 Source distributionType 'help;'
or '\h' for help. Type '\c' to clear the buffer.mysql> quit

Bye

十、重新执行修改密码

SET PASSWORD = PASSWORD('123456');

注:第十步不一定需要,但是 MySql5.6操作时可能会报错:You must SET PASSWORD before executing this statement.