Once the basic infrastructure configuration of OpenNebula is complete, we can really start using it for our needs.
In the first section of this chapter, we will go straight down to launch a ttylinux test virtual machine, provided by the OpenNebula guys. Later, we will dig into the configuration procedures for virtual networks, virtual images, and virtual machines. Lastly, we will learn how to create our own images, ready to be used with OpenNebula.
But first, I want to make a clarification regarding a peculiar feature of cloud computing solutions. Unlike standard virtualization tools, you must understand that the operating system installation should not be carried out after the creation of a new virtual machine. We need to prepare a template image that will contain a basic system installation (of your favourite Linux distribution, *BSD, and so on) plus a configuration script to configure the basic functionalities (for example, network) and...