OpenNebula can be used to manage a virtual infrastructure on top of physical local infrastructure. In particular, we are using dedicated physical servers to provide the fabric for the flexible virtual infrastructure, which can be dynamically increased or decreased driven by its demand. If the local fabric is not enough to provide the demanded virtual infrastructure capacity (that is, we need to keep growing the cluster), we can spawn more nodes from a cloud provider, in this case the KVM based ElasticHosts. This guide shows how to configure OpenNebula to be able to interface this cloud provider.

A single OpenNebula management instance can be used to combine local infrastructure with the ElasticHost remote clouds, so building a highly scalable hosting environments.