We’ve recently released a Sandbox Appliance for VMware and now is the turn to do the same with KVM. The appliance image is already in the OpenNebula marketplace but hold your horses and don’t download it just yet. Head to the documentation and download the script that will be used to configure your machines, download the image and start it up.
The requirements now are at least a couple of machines with Ubuntu Server 12.04 64 bit. The CPU should support hardware virtualization as we are using KVM here. It is based on the VMware appliance so you’ll be able to develop in it if you need as all the libraries needed for compilation are already there.
Use the OpenNebula user’s mailing list if you have any problem or question with it.
Happy play time in the sandbox!