解决服务器无法使用SFTP问题，乱码

@[TOC]解决Host Key verification failed问题，通过下面代码能解决实际问题

问题背景

在做集团CMS数据接入工作中，发现风电场站二区一体机无法SFTP进入cms服务器。

下面展示一些 日志代码。

$ sftp cmssftp@192.168.100.100
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:HDjXJvu0VYXWF+SKMZjSGn4FQmg/+w6eV9ljJvIXpx0.
Please contact your system administrator.
Add correct host key in /Users/wangdong/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/wangdong/.ssh/known_hosts:46
ECDSA host key for 192.168.100.100 has changed and you have requested strict checking.
Host key verification failed.
Connection closed

代码中重要的是：

ECDSA host key for 192.168.100.100 has changed and you have requested strict checking.
Host key verification failed.

一般这个问题，是运维人员重置服务器之后，无法再次访问。

解决方法

ssh-keygen -R 你要访问的IP地址

eg:

ssh-keygen -R 192.168.100.100

哈哈哈哈，解决了，给兄弟们看图片