mysql设置简单密码报错ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

【问题】

有时候,只是为了自己测试,不想密码设置得那么复杂,譬如只想设置root的密码为123456。

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123456');

但是会报错:

  1. mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123');
  2. ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

【原因】

原来MySQL5.6.6版本之后增加了密码强度验证插件validate_password,相关参数设置的较为严格。
使用了该插件会检查设置的密码是否符合当前设置的强度规则,若不满足则拒绝设置。影响的语句和函数有:create user,grant,set password,password(),old password。


【解决】


  1. mysql> SHOW VARIABLES LIKE 'validate_password%';
  2. +--------------------------------------+--------+
  3. | Variable_name | Value |
  4. +--------------------------------------+--------+
  5. | validate_password_dictionary_file | |
  6. | validate_password_length | 8 |
  7. | validate_password_mixed_case_count | 1 |
  8. | validate_password_number_count | 1 |
  9. | validate_password_policy | MEDIUM |
  10. | validate_password_special_char_count | 1 |
  11. +--------------------------------------+--------+
  12. 6 rows in set (0.08 sec)

1) 查看mysql全局参数配置

该问题其实与mysql的validate_password_policy的值有关。
查看一下msyql密码相关的几个全局参数:

2)参数解释

validate_password_dictionary_file
插件用于验证密码强度的字典文件路径。

validate_password_length
密码最小长度,参数默认为8,它有最小值的限制,最小值为:validate_password_number_count + validate_password_special_char_count + (2 * validate_password_mixed_case_count)

validate_password_mixed_case_count
密码至少要包含的小写字母个数和大写字母个数。

validate_password_number_count
密码至少要包含的数字个数。

validate_password_policy
密码强度检查等级,0/LOW、1/MEDIUM、2/STRONG。有以下取值:

  1. Policy Tests Performed
  2. 0 or LOW Length
  3. 1 or MEDIUM Length; numeric, lowercase/uppercase, and special characters
  4. 2 or STRONG Length; numeric, lowercase/uppercase, and special characters; dictionary file

默认是1,即MEDIUM,所以刚开始设置的密码必须符合长度,且必须含有数字,小写或大写字母,特殊字符。

validate_password_special_char_count
密码至少要包含的特殊字符数。

3)修改mysql参数配置

  1. mysql> set global validate_password_policy=0;
  2. Query OK, 0 rows affected (0.05 sec)
  3. mysql>
  4. mysql>
  5. mysql> set global validate_password_mixed_case_count=0;
  6. Query OK, 0 rows affected (0.00 sec)
  7. mysql> set global validate_password_number_count=3;
  8. Query OK, 0 rows affected (0.00 sec)
  9. mysql> set global validate_password_special_char_count=0;
  10. Query OK, 0 rows affected (0.00 sec)
  11. mysql> set global validate_password_length=3;
  12. Query OK, 0 rows affected (0.00 sec)
  13. mysql> SHOW VARIABLES LIKE 'validate_password%';
  14. +--------------------------------------+-------+
  15. | Variable_name | Value |
  16. +--------------------------------------+-------+
  17. | validate_password_dictionary_file | |
  18. | validate_password_length | 3 |
  19. | validate_password_mixed_case_count | 0 |
  20. | validate_password_number_count | 3 |
  21. | validate_password_policy | LOW |
  22. | validate_password_special_char_count | 0 |
  23. +--------------------------------------+-------+
  24. 6 rows in set (0.00 sec)

4)修改简单密码:

  1. mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123');
  2. Query OK, 0 rows affected, 1 warning (0.00 sec)

 

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