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This article mainly introduces mysql 8.0 forget how to use the root user password, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand it.

Forgetting the root user password, first restart the mysqld service using the following

[root@mysql8-01 ~] # systemctl set-environment MYSQLD_OPTS= "--skip-grant-tables"

[root@mysql8-01 ~] # systemctl stop mysqld

[root@mysql8-01 ~] # systemctl start mysqld

If you need to use a simple password, you need to modify the system parameters:

Set global validate_password.policy=0

Set global validate_password.length=4

Then log in:

[root@mysql8-01 ~] # mysql

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

Your MySQL connection id is 7

Server version: 8.0.14 MySQL Community Server-GPL

Copyright (c) 2000, 2019, 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 >

Mysql > ALTER USER 'root'@'*' IDENTIFIED BY' 123456'

ERROR 1290 (HY000): The MySQL server is running with the-- skip-grant-tables option so it cannot execute this statement

Mysql > flush privileges

Query OK, 0 rows affected (0.02 sec)

Mysql > ALTER USER 'root'@'*' IDENTIFIED BY' 123456'

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

Mysql > set global validate_password.policy=0

Query OK, 0 rows affected (0.00 sec)

Mysql > set global validate_password.length=4

Query OK, 0 rows affected (0.00 sec)

Mysql > flush privileges

Query OK, 0 rows affected (0.01 sec)

Mysql > ALTER USER 'root'@'*' IDENTIFIED BY' 123456'

ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'*'

Mysql > ALTER USER 'root'@'localhost' IDENTIFIED BY' 123456'

Query OK, 0 rows affected (0.00 sec)

Mysql > flush privileges

Query OK, 0 rows affected (0.00 sec)

Mysql >

Mysql > exit

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