The server's host key is not cached in the registry. You have no guarantee that the server is the computer you think it is.
The server's rsa2 key fingerprint is:
ssh-rsa 2048 xx:xx:xx:xx:xx:xx:1f:c1:6a:e6:d3:cb:7f:b7:a1
If you trust this host,hit Yes to add the key to PieTTY's cache and carry on connecting. If you want to carry on connecting just once,without adding the key to the cache, hit No.
If you do not trust this host, hit Cancel to abandon the connection.
服务器的主机密钥未缓存在注册表中。你不能保证服务器就是你认为的计算机。
服务器的rsa2密钥指纹为：
ssh-rsa 2048 xx:xx:xx:xx:xx:xx:1f:c1:6a:e6:d3:cb:7f:b7:a1
如果您信任此主机，请单击“是”将密钥添加到PieTTY的缓存并继续连接。如果您想只连接一次，而不将密钥添加到缓存，请单击“否”。
如果您不信任此主机，请单击“取消”放弃连接。
总结：这其实是一个SSH初次连接的警告，点击“是”忽略即可。
标签：hit,提示,请单击,xx,PieTTY,key,打开,密钥 From： https://www.cnblogs.com/wekenyblog/p/17168950.html