前言

• CentOS Linux release 8.2.2004
• mysql 5.7.31

密碼策略

validate_password_policy，取值范圍[0,1,2]，默認值1。

• 0（LOW）：只校驗長度
• 1（MEDIUM）：校驗長度、大小寫和特殊字符
• 2（STRONG）：校驗長度、大小寫、特殊字符和dictionary_file

查看和修改密碼策略

查看密碼策略

mysql> show variables like '%validate_password_policy%'; +--------------------------+--------+ | Variable_name | Value | +--------------------------+--------+ | validate_password_policy | MEDIUM | +--------------------------+--------+ 1 row in set (0.01 sec) mysql> show variables like '%validate_password_length%'; +--------------------------+-------+ | Variable_name | Value | +--------------------------+-------+ | validate_password_length | 8 | +--------------------------+-------+ 1 row in set (0.00 sec) mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+--------+ | Variable_name | Value | +--------------------------------------+--------+ | validate_password_check_user_name | OFF | | 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 (0.00 sec)

修改密碼策略

mysql> set global validate_password_policy=0; #設置為弱口令 mysql> set global validate_password_length=1; #密碼最小長度為1

修改密碼方法

修改密碼有兩種方法：

• ALTER USER
• SET PASSWORD

修改當前賬戶的密碼

mysql> set password=password('MyNewPass4!');

為其它賬戶修改密碼

mysql> set password for 'test'@'localhost' = password("MyNewPass4!"); mysql> alter user 'test'@'localhost' identified BY 'MyNewPass4!' password expire;

參考

https://www.cnblogs.com/zhi-leaf/p/10533780.html
https://www.hxstrive.com/article/728.htm
https://sayyy.blog.csdn.net/article/details/110262949
https://sayyy.blog.csdn.net/article/details/102376241

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