問題：WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ED25519 key sent by the remote host is
SHA256:/..................
Please contact your system administrator.

解決

這段信息說的是key已經變了，但主機里的key還是舊的，這時候輸入如下命令刪除目標服務端ip的key：

ssh-keygen -R 192.168...(your target IP)

然后再用ssh連接一次重新輸入密碼即可。