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Well, I figured out half of it but still have an issue, This is what i did: On all compute nodes:

ssh-keygen

then copied the pub key:

scp /var/lib/nova/.ssh/id_rsa.pub root@otherHost:/var/lib/nova/.ssh/authorized_keys `

and edited the sshconf`

StrictHostKeyChecking no 
UserKnownHostsFile=/dev/null

Add two way or more than two way passwordless ssh: http://www.cyberciti.biz/tips/linux-multiple-ssh-key-based-authentication.html

And it workssss

Well, I figured out half of it but still have an issue, fully ;), This is what i did: On all compute nodes:

ssh-keygen

then copied the pub key:

scp /var/lib/nova/.ssh/id_rsa.pub root@otherHost:/var/lib/nova/.ssh/authorized_keys `

and edited the sshconf`

StrictHostKeyChecking no 
UserKnownHostsFile=/dev/null

Add two way or more than two way passwordless ssh: http://www.cyberciti.biz/tips/linux-multiple-ssh-key-based-authentication.html

And it workssss