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linux下mysql-5.6忘记root密码,重置root密码详细过程

2017-12-25 12:12 846 查看
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:

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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>

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使用mysql表,然后进行修改mysql的root密码:

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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)

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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>

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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,
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