MySQL 8：密码策略设定

缺乏、安全感 2023-07-07 05:45 1阅读 0赞

在MySQL 8中，默认的密码策略进行了调节，这篇文章介绍调节和设定的方法。

# 环境说明 #

*  操作系统版本: 10.15.2

liumiaocn:target liumiao$ sw_vers
    ProductName:	Mac OS X
    ProductVersion:	10.15.2
    BuildVersion:	19C57
    liumiaocn:target liumiao$

*  MySQL版本: 8.0.11

liumiaocn:target liumiao$ mysql -uroot -p
    Enter password: 
    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 46
    Server version: 8.0.11 Homebrew
    
    Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
    
    mysql>

*  MySQL运行状态

liumiaocn:target liumiao$ mysql.server status
     SUCCESS! MySQL running (4633)
    liumiaocn:target liumiao$

# 问题现象 #

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'liumiao123';
    ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
    mysql>

# 原因 #

这是因为在MySQL 8中密码策略缺省被设定为 中等(MEDIUM)，liumiao123不能通过这个标准。可以通过如下SQL进行密码策略的查询：

# 对应方法 #

要么调高密码的复杂度，要么降低密码策略的标准，这里选择后者进行说明，执行如下SQL即可

mysql> set global validate_password_policy=0;
    Query OK, 0 rows affected (0.00 sec)
    
    mysql>

执行之后结果确认信息如下所示：

# 结果确认 #

再次执行密码设定，可以发现已经能够设定成功了

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'liumiao123';
    Query OK, 0 rows affected (0.03 sec)
    
    mysql>