ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'localhost'

• mysql連數據庫的時候報錯:
  • 1251 client does not support authentication protocol requested by server;consider upgrading Mysql client ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'localhost'
• 先登陸mysql

mysql -u root -p

• 輸入密碼

mysql> use mysql;

mysql> select user,host from user;

+------------------+-----------+
| user             | host      |
+------------------+-----------+
| root             | %         |
| admin            | localhost |
| mysql.infoschema | localhost |
| mysql.session    | localhost |
| mysql.sys        | localhost |
| zhangj           | localhost |
+------------------+-----------+

• 注意個人root，host是'%'
• 你可能執行的是:

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

• 改爲:

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123';