Troubleshooting 관련

• ssh 접속 오류
• 스크립트 실행오류
  • /bin/sh^M: bad interpreter: 그런 파일이나 디렉터리가 없습니다.

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ssh 접속 오류

증상

ssh root@192.168.0.80 -p 22
#
# @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
# @    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:FN2idP7a1ZW7gC+K7WeRuwZSfUqt4aQIMr9eRTbmM44.
# Please contact your system administrator.
# Add correct host key in <홈>/.ssh/known_hosts to get rid of this message.
# Offending ECDSA key in <홈>/.ssh/known_hosts:3
# ECDSA host key for 192.168.0.80 has changed and you have requested strict checking.
# Host key verification failed.

해결

• 커맨드 불량

# 불량
# 성공

• Secret 재등록 필요

• .<홈>/.ssh/known_hosts 경로 /파일 존재확인

  • ( 윈도우 경우) %UserProfile%\.ssh\known_hosts

known_hosts

# 192.168.0.53 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBHUE6W2QfyScJlHNodcrGQ+iwDNgTSJ5jy/7UJs8G+81JpXIvinLP33ZhJbKUHBTG7HjIq4EJwu+3jV9fJsuN7k=
# 192.168.0.50 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBH9mzi0fzuYaove5zhq+SlKBKtorAOlXLmwPSaToS45CoqV81vKaNH832BMJc5e9zOwUqNzF97kyJbd/01Bk5Nc=
# 192.168.0.80 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNMpHF9y+QPRcYG0XFAzlSCrpf1muxMzGyRbwvgZuxjoQ5462b6TeVGJUHFTaUgv9dgbXow3myaFM8fNVu1FEEM=

80번에 대한 접근 Secret 제거

ssh root@192.168.0.80 -p 22
#
# root@192.168.0.80's password:
# Web console: https://ovirt.ititinfo.com:9090/ or https://192.168.0.80:9090/
#
# Last login: Fri May 24 09:56:18 2024 from 192.168.0.51

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스크립트 실행오류

/bin/sh^M: bad interpreter: 그런 파일이나 디렉터리가 없습니다.

• 😥유닉스 개행문자와 윈도우 개행문자가 섞여있을 경우 발생
• 💊실행하려는 스크립트에 대하여 아래와 같이 실행

해결

sed -i -e 's/\r$//' <문제파일.sh>

해결

vi <문제파일.sh>
set fileformat=unix

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