Offending key for IP in /home/user/.ssh/known_hosts:6
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!
@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@IIT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
3.A warning message Offending key for IP in /home/user/.ssh/known_hosts is displayed.
4.Remove the [key number 6] from /home/user/.ssh/known_hosts, and then copy it in a temporary file.
5.To add a new key to/home/user/.ssh/known_hosts.
6.Copy the old key stored in the temporary file again to/home/user/.ssh/known_hosts, perform a SSH from IP1 to IP2.
7.Perform the same procedure for SSH connection without password from IP2 to IP1.
To set SSH connection without password between multiple nodes for the same IP 51