MySQL version: 5.7.9
For development, using a MySQL server with strong password policy is dosing some matter.
If you set a simply password for someone, you will got an error like this:
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
To change the default password plugin level, we can change the settings at runtime or in config file.
mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+--------+
| Variable_name | Value |
+--------------------------------------+--------+
| validate_password_dictionary_file | |
| validate_password_length | 8 |
| validate_password_mixed_case_count | 1 |
| validate_password_number_count | 1 |
| validate_password_policy | MEDIUM |
| validate_password_special_char_count | 1 |
+--------------------------------------+--------+
6 rows in set (0.01 sec)
The default level is MEDIUM, we can change it to LOW, which will only check the password's length(min: 8 chars).
mysql> SET GLOBAL validate_password_policy=LOW;
Query OK, 0 rows affected (0.00 sec)
Or we can set it in my.cnf file
[mysqld]
validate_password_policy=LOW
Reference: