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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
SHA256:3Q33xxxxxxxxxxxaJ+yvxxxxxxxxxxxxxxxxxxx3CQ.
Please contact your system administrator.
Add correct host key in /home/ec2-user/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/ec2-user/.ssh/known_hosts:9
ECDSA host key for 123.123.123.123 has changed and you have requested strict checking.
Host key verification failed.
known hostsを初期化
$ ssh-keygen -R 123.123.123.123
ssh接続をする際に「WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!」と出てつながらない｜Tech Blog｜日本情報通信株式会社
