We needed to deploy a simple hypervisor on one of our internal systems. This system was disconnected from the Internet for some particular reasons and it was surprisingly difficult to find a suitable bundled linux distribution which provided the features we needed. Ubuntu desktop does not come with KVM, ubuntu server does not have X, so it’s not easy to run virt-manager on the machine. There were no CentOS versions that provided the right mix of capabilities; oVirt-node was one reasonable candidate, but it only exposed a management interface which needed to be run remotely or else somehow packaged with the system. One of our colleagues is a big fan of proxmox, but this is overkill for the simple single hypervisor case we wanted.