Thanks for reply

I have just managed to successfully run cluster.
I am not yet sure it is the right way as I was following many tutorials simultaneously.
cluster resource.xml

I am working on VMs and for testing the cluster, I wanted to have minimum number of machines required to run. I'll add another machine on production infrastructure as suggested.
Now I have to read more about conntrakd and other stuff related to cluster.
This was the biggest hurdle.