我的是win10，用putty连接实例，报错 access denied ,
网上查好多都是改文件，我改了实例的密码，然后重启实例，再用Putty 连接就OK了
充值密码连接
https://help.aliyun.com/document_detail/25439.html?spm=5176.11065259.1996646101.searchclickresult.bcbb1fe8mJ03X1
重启实例连接
https://help.aliyun.com/document_detail/25440.html?spm=5176.11065259.1996646101.searchclickresult.3dae7c49rUskbD
https://help.aliyun.com/document_detail/25439.html?spm=5176.11065259.1996646101.searchclickresult.bcbb1fe8mJ03X1