[Linux-cluster] ssh'ing to Cluster IP aliases.

[Bennie Thomas <Bennie_R_Thomas raytheon com>]

I have a 3-node Cluster set up as 2-nodes active and one passive. I have 
assigned 2 IP Aliases
to fail over. The problem I am having is;  When I ssh to the IP aliases 
the first time it works fine,
I then failover the IP alias service to the backup node, then try 
ssh'ing to the alias,  it fails with man in the middle attack

I know I can go modify .ssh/known_hosts and remove the host key and it 
will work, but if the alias fails back to the
original node the problem starts all over.

How can I set up ssh to allow this connection. ?