SSH遇到“WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!”
服务器重装系统以后再次通过ssh连接会提示：
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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 ECDSA key sent by the remote host is
SHA256:OWmU6QYc/zKqT3x9CtHcyfbL4ea201sk7XBY5KQVHps.
Please contact your system administrator.
Add correct host key in C:\\Users\\%USERNAME%/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in C:\\Users\\%USERNAME%/.ssh/known_hosts:13
ECDSA host key for 192.168.2.26 has changed and you have requested strict checking.
Host key verification failed.
会出现这些信息是因为，第一次SSH连接时，会生成一个认证，储存在客户端 C:\Users\%USERNAME%/.ssh/known_hosts 里面，linux是 ~/.ssh/known_hosts
解决方法：（两个办法选一个）
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删除known_hosts 对应服务器地址的那一行
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ssh-keygen -R 服务器IP