mysql 1251 Client does not support authentication protocol requested by server; consider upgrading mysql client

转载自：https://blog.csdn.net/XDMFC/article/details/80263215

好不容易安装好mysql，但又出现了mysql客户端版本太低的问题。根据参考的这篇博客，完美的解决了该问题。

1、通过命令行进入解压的mysql根目录下。

2、登陆数据库

mysql -uroot -p

3、再输入root的密码：

1.  Enter password: ******
2.  Welcome to the MySQL monitor. Commands end with ; or g.
3.  Your MySQL connection id is 18
4.  Server version: 8.0.11 MySQL Community Server - GPL
5.  Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
6.  Oracle is a registered trademark of Oracle Corporation and/or its
7.  affiliates. Other names may be trademarks of their respective
8.  owners.
9.  Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
10.  mysql>

4、更改加密方式：

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;

5、更改密码：该例子中 123为新密码

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';

6、刷新：

mysql> FLUSH PRIVILEGES;

这步完成后我已经成功解决了问题。如果报错，可以看下面第7步，博主依然给出了解决方案

7、

// 如果报错ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'%'：

则是远程访问权限不正确，先选择数据库，查看一下再更改：

1 2 3 4 5 6 7 8 9 10 11 12 13

mysql> use mysql; Database changed   mysql> select user,host from user; +------------------+-----------+ | user             | host      | +------------------+-----------+ | mysql.infoschema | localhost | | mysql.session    | localhost | | mysql.sys        | localhost | | root             | localhost | +------------------+-----------+ 5 rows in set (0.00 sec)

最后，感谢参考的该博主。此次转载只希望帮助更多的人，毕竟在犄角旮旯里找到这个方案不容易。若有人想要转载，请注明原博主，谢谢。