Adding swift nodes to an existing openstack installation

I am trying redhat openstack installation (60 days trial version) and followed https://access.redhat.com/articles/1127153 link to install. I wanted to try the scenario where we add another swift node to this setup. How can I do that? I see some documents which talk about using packstack and installing. Can I follow that? Also in this case what would be the controller node and also IPs for keystone etc. Would it be IP of my node where currently all services are running ?
Kindly advise.