SSH RSA 공유키 충돌 문제 해결

문제

ssh로 붙을 때 갑자기 안됨..

다음과 같은 오류가 발생함.

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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:asdfzxcvjkzxlcvjklqjlkerjalksdjfklzjcxvlkcx.

Please contact your system administrator.

Add correct host key in /Users/XXXX/.ssh/known_hosts to get rid of this message.

Offending ECDSA key in /Users/XXXX/.ssh/known_hosts:6

ECDSA host key for 123.123.123.123 has changed and you have requested strict checking.

Host key verification failed.

해결 방법

XXXXui-MacBook-Pro:Desktop XXXX$ ssh-keygen -R 123.123.123.123

위의 명령어에서 IP 주소는 접속하고자 하는 IP로 변경함.

하고 나면 잘됨.