ssh远程访问失败 Centos7
命令ssh远程访问另外一台主机hadoop.master失败
#ssh hadoop.master
报以下信息
[root@hadoop ~]# ssh hadoop.master @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: POSSIBLE DNS SPOOFING DETECTED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ The ECDSA host key for hadoop.master has changed, and the key for the corresponding IP address 192.168.121.130 is unknown. This could either mean that DNS SPOOFING is happening or the IP address for the host and its host key have changed at the same time. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ 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:/KCwo40lFi2rj2e62EkqJvlCnSsDnRv+W9/PtTog6ME. 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:1 ECDSA host key for hadoop.master has changed and you have requested strict checking. Host key verification failed.
删除在上面显示访问失败的主机信息， 进入文件 .ssh/know_hosts
#vi .ssh/known_hosts
删除访问失败的主机信息IP和密钥记录（可能是），保存退出，重新访问。
原文：https://www.cnblogs.com/Jomini/p/10673862.html