Linux SSH 远程登录错误解决办法 WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

 

 

Linux SSH 远程登录错误解决办法 WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

 

最近在登录一台机器的时候，发现无法等入了，出现以下错误

 

原来known_hosts是记录远程主机的公钥的文件，之前重装个系统，而保存的公钥还是未重装系统的系统公钥，在ssh链接的时候首先会验证公钥，如果公钥不对，那么就会报错.

使用shh-keygen 命令

 

wljdeMacBook-Pro:~ wlj$ ssh root@47.**.***.***
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:n9HdR0qHesf7Nx+D729TW47QZ9rdz8uDAwNlJQnMzeU.
Please contact your system administrator.
Add correct host key in /Users/wlj/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/wlj/.ssh/known_hosts:1
ECDSA host key for 47.**.***.*** has changed and you have requested strict checking.
Host key verification failed.
wljdeMacBook-Pro:~ wlj$ ssh-keygen -R 47.**.***.***
# Host 47.**.***.*** found: line 1
/Users/wlj/.ssh/known_hosts updated.
Original contents retained as /Users/wlj/.ssh/known_hosts.old
wljdeMacBook-Pro:~ wlj$ ssh root@47.**.***.***
The authenticity of host '47.**.***.*** (47.**.***.***)' can't be established.
ECDSA key fingerprint is SHA256:n9HdR0qHesf7Nx+D729TW47QZ9rdz8uDAwNlJQnMzeU.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '47.**.***.***' (ECDSA) to the list of known hosts.