Mysql 5.7 修改密码、远程连接

1.通过本机登录2.修改密码：报错：ERROR 1819 (HY000): Your password does not satisfy the current policy requirements 3.远程不能访问4.无密码登录

1.通过本机登录

显示为> mysql 表示登录成功

2.修改密码：

方式1:

update mysql.user set authentication_string=password('root') where user='root' and Host = 'localhost’;

方式2：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';

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

解决办法1： |- 把密码修改为长一些, 符合【大写 + 小写 + 数字 + 特殊字符】如：alter user ‘root’@‘localhost’ identified by ‘CN.eee.123’;

解决办法2：调整安全策略 参考：https://www.cnblogs.com/ivictor/p/5142809.html |- set global validate_password_policy=0; |- set global validate_password_length=1;

再次执行修改密码即可。

3.远程不能访问

mysql> use mysql; mysql> update user set host = ‘%’ where user = ‘root’; mysql> FLUSH PRIVILEGES；

4.无密码登录

参考：https://www.cnblogs.com/microtiger/p/7581175.html