首先停掉mysql服務，在/etc/my.cnf中添加?skip-grant-tables，同時可以添加skip-networking選項來禁用網絡功能，防止這時其他人通過網絡連接到數據庫

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

symbolic-links=0

skip-grant-tables #添加這一行

啟動服務，進入數據庫

MariaDB [(none)]> use mysql;

Reading table information for completion of table and column names

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

[email?protected]，沒有就用update添加

MariaDB [mysql]> select host,user,password from user;

+-----------------------+------+-------------------------------------------+

| host | user | password |

+-----------------------+------+-------------------------------------------+

| % | LEE | *E6CC90B878B948C35E92B003C792C46C58C4AF40 |

| % | root | *E6CC90B878B948C35E92B003C792C46C58C4AF40 |

| localhost | root | |

| localhost.localdomain | | |

| 127.0.0.1 | root | |

+-----------------------+------+-------------------------------------------+

5 rows in set (0.00 sec)

[email?protected]

MariaDB [mysql]> UPDATE user SET password=PASSWORD(‘1‘) WHERE user=‘root‘ AND host=‘localhost‘;

Query OK, 1 row affected (0.00 sec)

Rows matched: 1 Changed: 1 Warnings: 0

#把相應的權限附上

MariaDB [mysql]> update user set

-> `Select_priv` = ‘Y‘,

-> `Insert_priv` = ‘Y‘,

-> `Update_priv` = ‘Y‘,

-> `Delete_priv` = ‘Y‘,

-> `Create_priv` = ‘Y‘,

-> `Drop_priv` = ‘Y‘,

-> `Reload_priv` = ‘Y‘,

-> `Shutdown_priv` = ‘Y‘,

-> `Process_priv` = ‘Y‘,

-> `File_priv` = ‘Y‘,

-> `Grant_priv` = ‘Y‘,

-> `References_priv` = ‘Y‘,

-> `Index_priv` = ‘Y‘,

-> `Alter_priv` = ‘Y‘,

-> `Show_db_priv` = ‘Y‘,

-> `Super_priv` = ‘Y‘,

-> `Create_tmp_table_priv` = ‘Y‘,

-> `Lock_tables_priv` = ‘Y‘,

-> `Execute_priv` = ‘Y‘,

-> `Repl_slave_priv` = ‘Y‘,

-> `Repl_client_priv` = ‘Y‘,

-> `Create_view_priv` = ‘Y‘,

-> `Show_view_priv` = ‘Y‘,

-> `Create_routine_priv` = ‘Y‘,

-> `Alter_routine_priv` = ‘Y‘,

-> `Create_user_priv` = ‘Y‘,

-> `Event_priv` = ‘Y‘,

-> `Trigger_priv` = ‘Y‘,

-> `Create_tablespace_priv` = ‘Y‘

-> where user=‘root‘ and host=‘localhost‘;

Query OK, 1 row affected (0.00 sec)

Rows matched: 1 Changed: 1 Warnings: 0

#更新數據庫

MariaDB [mysql]> FLUSH PRIVILEGES;

Query OK, 0 rows affected (0.00 sec)

在之后退出數據庫，把剛才改的配置文件還原回來，重啟數據庫就好了。

原文：https://www.cnblogs.com/forlive/p/9768006.html

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