Log in to your OpenStack installation (for this demo, I'm using Red Hat's public OpenStack).
I have used an Image based on RHEL 6.5 (rhel-guest-image-6.5-20140307.0.x86_64.qcow2 to be exact).
Example:
Make sure to appropriately assign any floating IPs your instances may require.
If using RHEL, make sure to subscribe it to the RHN appropriately.