mysql 無法連接提示 Authentication plugin 'caching_sha2_password' cannot be loaded

 mysql 無法連接提示 Authentication plugin 'caching_sha2_password' cannot be loaded

可能是密碼沒有設置或者，密碼設置類型不符，可參考如下步驟解決

1 查看當前賬戶，和密碼

select user,host,password from user;

或者是否設置了authentication_string

select user,host,authentication_string,plugin from mysql.user;

2 如果沒有設置，就重置密碼

grant all privileges on *.* to 'yourname'@'localhost' identified by 'yourpassword'

或者對應第二種情況

ALTER USER 'XXXX'@'%' IDENTIFIED WITH mysql_native_password BY 'XXXXXXXX';

3 最後需要刷新下許可權

flush privilege

4 如果是不重要的用戶名，也可以通過新建用戶賦予許可權，

grant all privileges on *.* to 'xxx'@'localhost' identified by 'xxxx' ;