[SSH] 접속 오류 WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

개요

ssh 접속 시도시 아래와 같은 에러 메세지가 출력되었다.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @ 
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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.
Add correct host key in ~/.ssh/known_hosts to get rid of this message. 
Offending ECDSA key in ~/.ssh/known_hosts:28 
host key for ~ has changed and you have requested strict checking.
Host key verification failed.

 

확인

서버가 변경 되었는데, 동일한 ip로 접근을 시도할 때 발생하는 문제이다.

 

진행

이러한 경우엔 접근할 ip 에 대하여 초기화를 진행하면 된다.

ssh-keygen -R [접근할 ip 주소 입력]