Centos7 MySQL运行报错ERROR 1820 (HY000): You must reset your password using ALTER USER statement before

刚刚在Centos7通过在线安装MySQL5.7之后，在线安装MySQL是有默认密码的
查看默认密码方式：cat /var/log/mysqld.log | grep password

上面是我的MySQL默认密码，每个人的都不同。
然后登录MySQL执行任意的命令都会报

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

意思是在你执行这条命令时需要重新设置你的密码。执行下面命令重新设置你的密码

SET PASSWORD = PASSWORD('Your Password');

执行完后又报错

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

意思是你的密码设置的太简单，干脆修改密码策略。

set global validate_password_policy=0;
set global validate_password_length=1;

SET PASSWORD = PASSWORD('Your Password');

OK！