- 错误类型：
- 其他错误
- 错误名称：
- 无法通过SSH或SFTP连接服务器
- 英文名称：
- Host key verification failed
- 错误描述：
- 这通常是因为IP地址或SSH密钥指纹已更改（通常是由于服务器更新），而旧的仍存储在您的known_hosts文件中，该文件用于SSH和SFTP连接。
通过SSH或SFTP连接时遇到问题？如果您收到如下所示的错误，这通常是因为IP地址或SSH密钥指纹已更改（通常是由于服务器更新），而旧的仍存储在您的known_hosts文件中，该文件用于SSH和SFTP连接。
[user@hostname ~]$ ssh root@user
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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
xx:xx:xx.
Please contact your system administrator.
Add correct host key in /home/hostname /.ssh/known_hosts to get rid of this message.
Offending RSA key in /var/lib/sss/pubconf/known_hosts:4
RSA host key for user has changed and you have requested strict checking.
Host key verification failed.
[user@hostname ~]$ ssh root@user
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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
xx:xx:xx.
Please contact your system administrator.
Add correct host key in /home/hostname /.ssh/known_hosts to get rid of this message.
Offending RSA key in /var/lib/sss/pubconf/known_hosts:4
RSA host key for user has changed and you have requested strict checking.
Host key verification failed.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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
xx:xx:xx.
Please contact your system administrator.
Add correct host key in /home/hostname /.ssh/known_hosts to get rid of this message.
Offending RSA key in /var/lib/sss/pubconf/known_hosts:4
RSA host key for user has changed and you have requested strict checking.
Host key verification failed.
[user@hostname ~]$ ssh root@user @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ 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 xx:xx:xx. Please contact your system administrator. Add correct host key in /home/hostname /.ssh/known_hosts to get rid of this message. Offending RSA key in /var/lib/sss/pubconf/known_hosts:4 RSA host key for user has changed and you have requested strict checking. Host key verification failed.
如果您在连接时遇到问题，请首先确保您使用的是正确的密码。
如果仍有问题，请按照以下说明从known_hosts文件中删除条目。
Mac或Linux
1.打开终端并使用nano文本编辑器编辑以下文件。
nano ~/.ssh/known_hosts
nano ~/.ssh/known_hosts
nano ~/.ssh/known_hosts
2.删除所有以您的服务器IP地址开头的条目。
3.然后保存文档 (Ctrl+x)。
Windows
如果您使用的是Windows，它也有一个类似的known_hosts文件，但凭据和IP存储在注册表中。
1.从开始菜单启动regedit。下面的示例使用的是Windows 10。
Windows注册表编辑器
2.浏览到以下目录：HKEY_CURRENT_USERSoftWareSimonTathamPuTTYSshHostKeys
SSH主机密钥
3.删除所有以您的服务器IP地址结尾的条目。