在linux平台下使用mysql过程中忘记了root密码，对于运维和DBA来讲都是一件头疼的事情，下面来讲解下怎么进行重置mysql数据库root 密码：

1、首先停止mysql服务进程：

1 service mysqld stop

然后编辑mysql的配置文件my.cnf

1 vim /etc/my.cnf

找到 [mysqld]这个模块：

在最后面添加一段代码

1 skip-grant-tables ##忽略mysql权限问题，直接登录

然后保存 :wq!退出

启动mysql服务：

1 service mysqld start

直接进入mysql数据库：

1 Starting MySQL. SUCCESS!

2 [root@web1 ~]# mysql

3 Welcome to the MySQL monitor. Commands end with ; or \g.

4 Your MySQL connection id is 1

5 Server version: 5.6.34 Source distribution

6

7 Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

8

9 Oracle is a registered trademark of Oracle Corporation and/or its

10 affiliates. Other names may be trademarks of their respective

11 owners.

12

13 Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

14

15 mysql>

使用mysql表，然后进行修改mysql的root密码：

1 mysql> use mysql; ##使用mysql数据库

2 Reading table information for completion of table and column names

3 You can turn off this feature to get a quicker startup with -A

4

5 Database changed

6 mysql> update user set password=password("123456") where user="root";##更新密码

7 Query OK, 4 rows affected (0.00 sec)

8 Rows matched: 4 Changed: 4 Warnings: 0

9

10 mysql> flush privileges;##刷新权限

11 Query OK, 0 rows affected (0.00 sec)

1 [root@web1 ~]# ps -ef |grep mysql ##显示mysql现有的进程

2 root 56407 1 0 17:50 pts/0 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/data/mysql --pid-file=/data/mysql/web1.pid

3 mysql 56533 56407 0 17:50 pts/0 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/data/mysql/web1.err --pid-file=/data/mysql/web1.pid

4 root 56560 1737 0 17:55 pts/0 00:00:00 grep mysql

5 [root@web1 ~]# killall mysqld ##删除mysql现有进程

6 [root@web1 ~]# ps -ef |grep mysql

7 root 56566 1737 0 17:56 pts/0 00:00:00 grep mysql

8 [root@web1 ~]# service mysqld start ##重新启动mysql服务

9 Starting MySQL. SUCCESS!

10 [root@web1 ~]# mysql -uroot -p ##使用新密码登录

11 Enter password:

12 Welcome to the MySQL monitor. Commands end with ; or \g.

13 Your MySQL connection id is 1

14 Server version: 5.6.34 Source distribution

15

16 Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

17

18 Oracle is a registered trademark of Oracle Corporation and/or its

19 affiliates. Other names may be trademarks of their respective

20 owners.

21

22 Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

23

24 mysql>

注意：先把mysql服务进程关闭,把添加过的跳过验证信息删除，要不然对数据库安全威胁太大，

5.7版本