然后查看密码策略

SHOW VARIABLES LIKE 'validate_password%';

密码策略显示如下：

mysql> SHOW VARIABLES LIKE 'validate_password%';
+--------------------------------------+--------+
| Variable_name                        | Value  |
+--------------------------------------+--------+
| validate_password.check_user_name    | ON     |
| 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      |
+--------------------------------------+--------+
7 rows in set (0.01 sec)

mysql> 

修改指定密码的验证强度等级，validate_password.policy=MEDIUM，修改为LOW：

set global validate_password.policy=LOW;

修改指定密码长度，validate_password.length=8，修改为6：

set global validate_password.length=6;