某资源池SP设备与rm通信异常，rm状态和sp状态频繁闪断，设备间通信异常，导致租户资源分配报内部错误。SP设备状态如下：
1）SP1上执行ssh到其他设备报如下类似错误：
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ 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 aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa. Please contact your system administrator. Add correct host key in /home/hicode/.ssh/known_hosts to get rid of this message. Offending ECDSA key in /home/hicode/.ssh/known_hosts:28 remove with: ssh-keygen -f "/home/hicode/.ssh/known_hosts" -R ip.ip.ip.ip ECDSA host key for ip.ip.ip.ip has changed and you have requested strict checking. Host key verification failed
本机执行 sudo ssh-keygen -f “/root/.ssh/known_hosts” -R 远程主机 //清除远程主机的公钥
2）
注: ssh-copy-id 将key写到远程机器的 ~/ .ssh/authorized_key.文件中
3）
4）
上图可见0.3指向到rm01；实际rm01地址应该是0.4；
但实际检查rm01确实是0.4：
将rm1关机后，两边都断开了：
于是重置rm01；
1）ssh公钥，私钥生成
本地机器上执行ssh-keygen产生公钥私钥对。
验证：cat .ssh/id_rsa.pub //公钥内容如下所示，后续写入 ~/ .ssh/authorized_key和 ~/ .ssh/know_hosts文件
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCl9N5+xboqSIagBx02rdZ2fkROCPW8iW7hl6Gu+2hkBYYy/b1qcOm8RF/AMyas3i0QEK7Hcu9H51l2lulVbS5n9M9FaWIyYzssaS012x2mg9iA6MxPMlaXFsZ5jnVrGicndzf3VUu9kCErp5q0OzzMjsG3PKQevzWZJSBaFgc8NF5ZJ+VT54BN8ktMTHVwOo15I2Uai+bs4eP0NsuwIJmGyYIUOuvTuUtJxGV3hZ+tcjhupupqVCwYOE+cDz8VkFBGtnKsdE69hWoY2VUfEOAfHZptra7Ce9dXfDgx9jxuuNiJYtGo/bZDfe+UJ5HUv8wrL+hFeRIihdmP2CKJD8j5 azdebug_it@azdebug_it
2）用ssh-copy-id将公钥复制到远程机器中
eg： ssh-copy-id -i .ssh/id_rsa.pub desktone@192.168.16.3 //[-i [identity_file]],指定认证文件
