We have Fuel Master node, and other slave nodes - are nodes to deploy OpenStack on. We are finally came to roles approach, and I want to remove all references to just "Controllers", "Computes", "Storages". We have "controller", "compute" roles still, but we have more than that - "cinder", "Ceph OSD", which can be combined with "controller" or "compute" roles, so the server will have two or even three roles applied.