场景缓存
某日线上排查问题,在堡垒机上面经过SSH链接其它服务器时报错(报错信息以下),遂始查,遍寻baidu、google,都是说要重置用户目录下的ssh文件夹,我以为这样作很不妥,举个例子,你不能由于系统的记事本不能用了,就重装系统吧?服务器
报错信息app
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ 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 SHA256:******* Please contact your system administrator. Add correct host key in /Users/apple/.ssh/known_hosts to get rid of this message. Offending RSA key in /Users/apple/.ssh/known_hosts:17 RSA host key for [***ip address***] has changed and you have requested strict checking. Host key verification failed.
出现缘由ssh
看错误描述,应该是SSH用到的RSA秘钥出了问题,突然想起,前几日要链接的这个服务器作了SSH模块升级,相比也是重置了秘钥,因此堡垒机下缓存的公钥应该是无效的,因此没法链接到对应服务器this
解决方法google
编辑堡垒机用户目录下的ssh文件夹中的know_hosts文件,删除对应IP的公钥记录便可~code