在linux平台下重置mysql数据库root 密码:

  • 2019-09-02
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1、首先停止mysql服务进程:
 service mysqld stop 
2、然后编辑mysql的配置文件my.cnf
    vim /etc/my.cnf
3、找到 [mysqld]这个模块:
   在最后面添加一段代码
    skip-grant-tables   ##忽略mysql
4、权限问题,直接登录
然后保存 :wq!退出
启动mysql服务:

service mysqld start
直接进入mysql数据库:

Starting MySQL. SUCCESS! 
[root@web1 ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.34 Source distribution

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

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

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

mysql> 
使用mysql表,然后进行修改mysql的root密码:

mysql> use mysql; ##使用mysql数据库
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("123456") where user="root";##更新密码
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4  Changed: 4  Warnings: 0

mysql> flush privileges;##刷新权限
Query OK, 0 rows affected (0.00 sec)
[root@web1 ~]# ps -ef |grep mysql  ##显示mysql现有的进程
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
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
root      56560   1737  0 17:55 pts/0    00:00:00 grep mysql
root@web1 ~]# killall mysqld  ##删除mysql现有进程
[root@web1 ~]# ps -ef |grep mysql
root      56566   1737  0 17:56 pts/0    00:00:00 grep mysql
[root@web1 ~]# service mysqld start ##重新启动mysql服务
Starting MySQL. SUCCESS! 
[root@web1 ~]# mysql -uroot -p ##使用新密码登录
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.34 Source distribution

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

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

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

mysql> 

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