解决ERROR 1819

@[TOC](解决ERROR 1819 (HY000): Your password does not satisfy the current policy requirements)
今天安装mysql再修改密码时遇到

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

产生的原因：

自定义密码太简单，出现了不符合密码策略的问题

查看 mysql 初始的密码策略

mysql> SHOW VARIABLES LIKE 'validate_password%';

如果遇到

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

修改策略，及密码长度

mysql> set global validate_password.policy=0
mysql> set global validate_password.length=1;

validate_password.policy取值

0 or LOW 只验证长度
1 or MEDIUM 验证长度、数字、大小写、特殊字符
2 or STRONG 验证长度、数字、大小写、特殊字符、字典文件
再次执行修改密码语句

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';

问题解决