MySQL密码强度规则设置
https://blog.csdn.net/u014236541/article/details/78244601
MySQL启用密码复杂度
https://blog.csdn.net/linaux_mctc/article/details/78503820
MySQL密码强度审计插件:validate_password的使用说明
https://my.oschina.net/u/232595/blog/677466
MySQL新版本中的validate_password插件测试
https://www.58jb.com/html/162.html
MySQL之validate_password_policy
https://blog.csdn.net/wltsysterm/article/details/79649484
MySQL Security – Password Validation Plugin
http://dasini.net/blog/2018/03/01/mysql-security-password-validation-plugin
How do I set the mysql password validation?
https://stackoverflow.com/questions/36301100/how-do-i-turn-off-the-mysql-password-validation
MySQL 5.7 Reference Manual 之Password Validation Plugin Options and Variables
https://dev.mysql.com/doc/refman/5.7/en/validate-password-options-variables.html
