The sad, bad secret about cloud-computing is that setting up a cloud and running an application on any of them is relatively easy, managing it though, that’s another thing entirely. That’s where companies like Convirture come in.
Convirture’s open-source project is ConVirt Open Source. With it you can manage both Xen and KVM (Kernel-based Virtual Machine)-based virtual machines (VM) and clouds. Specifically, with ConVirt, you can create and provision “gold” images, diagnose performance problems, and balance load across the datacenter, all from a Web-based interface and with consistent feature set across open-source virtualization platforms.