setting up the newest OpenStack Grizzly release seems to be really straight-forward. Red Hat has put together all support for this at http://openstack.redhat.com/.
I’ve documented installation, post-install config tweaks, how to add a few ready-to-use guest images and links to a few gotchas on the following wiki page:
Most items can be setup on the command line this way, no need to e.g. use the web interface to upload guest images.
Florian La Roche