The page http://docs.openstack.org/mitaka/config-reference/compute/hypervisors.html states: Most installations use only one hypervisor. However, you can use ComputeFilter and ImagePropertiesFilter to schedule different hypervisors within the same installation. I have both those set, but the "compute_driver" is used to choose the driver. This is a string, so only one option is available. How do I use more than one? -- Life sucks and then you die