SSH 접속 오류 (ECDSA host key 에러) 해결법

scp로 파일 긁어올때 다음과같은 에러가 났다.

참고로 소스 pc는 포맷을 했던 상태라 호스트 키 변경이 있었나보다.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@       WARNING: POSSIBLE DNS SPOOFING DETECTED!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
The ECDSA host key for ***.com has changed,
and the key for the corresponding IP address ***.***.***.***
is unknown. This could either mean that
DNS SPOOFING is happening or the IP address for the host
and its host key have changed at the same time.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 ECDSA key sent by the remote host is
SHA256:bS3YVX************************************
Please contact your system administrator.
Add correct host key in /Users/******/.ssh/known_hosts to get rid of this message.
Offending ED25519 key in /Users/******/.ssh/known_hosts:37
ECDSA host key for seoirim.com has changed and you have requested strict checking.
Host key verification failed.

 

이때는 당황하지않고 레거시 호스트키를 삭제하고 다시 갱신하면 해결된다.

sudo ssh-keygen -f "/your/known_hosts/path -R xxx.xxx.xxx