Solve the problem of centos8 MySQL password ERROR 1820 (HY000) You must reset your password using the ALTER USER

MySQL execution statement error

mysql> use mysql;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> show databases;
ERROR 1820 (HY000): You mustreset your password using ALTER USER statement before executing this statement.

According to common practice, it is not possible to directly modify the password level and authority

mysql> set global validate_password.policy=0;

mysql> set global validate_password.length=1;

And found that any statement entered is wrong

Solution:

1. First modify a password that meets its requirements. I modified it as shown in the figure:

mysql> alter user 'root'@'localhost' identified by 'MYsql123/*' ;

2. Change the password level permission

3. Refresh

4. Finally, modify the password you want to modify: (Both sentences in the test chart can be successfully modified)

5.quit quit MySQL and log in to MySQL again

Finally ps: I use centos 8.5.2111 MySQL 8. If it is MySQL 5, the statement to modify the password level period will be different

Just a little bit more specific, I hope it will be useful to you

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