[경고] 원격 호스트 식별이 변경되었습니다!

# 라즈베리 파이 설치후 본격 사용을 위해 Lan선을 물리고나서 ssh로 접속을 시도 하자마자...

 

# [WARNING] 아래와 같은 경고 문구가 뜬다. 

ubuntu  /mnt/c/Users/powernote  ssh ubuntu@192.168.0.41
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:MTE2SHsrhmwEcLHi7I8FuXH6cZBYY95l15l7GoWDytA.
Please contact your system administrator.
Add correct host key in /home/ubuntu/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/ubuntu/.ssh/known_hosts:5
  remove with:
  ssh-keygen -f "/home/ubuntu/.ssh/known_hosts" -R "192.168.0.41"
ECDSA host key for 192.168.0.41 has changed and you have requested strict checking.
Host key verification failed.

- 원격 호스트 정보가 변경 되었고 기존에 등록되어있던 RSA Key가 다르다는 내용이다.

 

# 문구 중간에 가이드가 있다. 

 ssh-keygen -f "/home/ubuntu/.ssh/known_hosts" -R "192.168.0.41"

> ssh-keygen -R 192.168.0.41

# Host 192.168.0.41 found: line 5
/home/ubuntu/.ssh/known_hosts updated.
Original contents retained as /home/ubuntu/.ssh/known_hosts.old

 

# 명령이후 host 정보가 update되었다.

이후에는 해당 경고문구가 사져졌다..

 

 

^^