scp不可用：WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED

最新推荐文章于 2025-05-19 10:17:21 发布

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最新推荐文章于 2025-05-19 10:17:21 发布

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文章标签：运维

本文解释了在使用SSH连接时遇到的“远程主机标识已更改”警告的原因，并提供了具体的解决步骤，包括如何修改known_hosts文件来消除此警告。

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WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

After doing ssh are you seeing this error.No problem it can be solved.

root@tuxworld:/tmp# ssh 10.10.0.16
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 RSA key sent by the remote host is
13:f2:a2:87:ff:79:e5:92:79:b4:10:51:53:c2:fb:60.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:11
  remove with: ssh-keygen -f "/root/.ssh/known_hosts" -R 10.10.0.16
RSA host key for 10.10.0.16 has changed and you have requested strict checking.
Host key verification failed.
root@tuxworld:/tmp#

Why it happens ?
Answer : Because it is mismatch of fingerprint information which is saved in .known_hosts file in your system with fingerprint value available in Server.

How to solve the issue

You have to delete the particular line from ~/.ssh/known_hosts file.
see the line no. 12 in above message “Offending ECDSA key in /root/.ssh/known_hosts:11“.
In line you are getting number 11 . Hence this is the line no. in known_hosts which you have to delete.

Here we will use vi editor to directly jump into that line number