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MySQL 重置 root 密码

使用以下语句尝试修改 root 密码时,

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
 

如果提示如下错误:

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

那是因为新密码不满足安全性要求,可查看目前的密码要求:

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 (0.04 sec)
 

根据上述规则重新设置密码。

也可以修改该规则以满足需要,比如:

SET GLOBAL validate_password_length = 4;
SET GLOBAL validate_password_number_count = 0;
 

再次检查规则:

mysql> show variables like 'validate_password%';
+--------------------------------------+--------+
| Variable_name                        | Value  |
+--------------------------------------+--------+
| validate_password.check_user_name    | ON     |
| validate_password.dictionary_file    |        |
| validate_password.length             | 4      |
| validate_password.mixed_case_count   | 1      |
| validate_password.number_count       | 0      |
| validate_password.policy             | MEDIUM |
| validate_password.special_char_count | 1      |
+--------------------------------------+--------+
7 rows in set (0.00 sec)
 

最后,也可以通过关闭密码检查的插件来达到设置任意密码的目的,

mysql>uninstall plugin validate_password;
 

但不建议这么做,或者说改好密码后再重新将插件装回来。

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posted @ 2021-06-02 19:57  刘哇勇  阅读(34)  评论(0编辑  收藏  举报

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