Can nova support multiple hypervisor on a single controller?

Question

In nova.conf, we need to specify computer_driver to either kvm or xen. Dose that mean one nova controller can support only one hypervisor technology? Can I mix kvm and xen virtual machines in the same cloud?

Answer 1

You can mix hypervisors, but on different compute nodes within a cell. You can then use image properties or scheduler hints to make sure vm's based on certain images land on the hypervisor type that they support or to schedule directly to a hypervisor type.