Compute node need: Openstack Nova services, kvm or other hypervisor, neutron agent, keystone at basic minimum. Try looking into openstack admin guide. Link: http://docs.openstack.org/grizzly/bas...

Doing multi-node RDO install packstack does what you are writing about on RHEL 7, CentOS 7, Fedora 20. There is only one issue answer-file targeting certain configuration should be written properly. It does require knowledge the rules of packstack game.