Chapter 6. Virtualization
These days, computer infrastructures have changed in many ways. We no longer see a room full of servers, each responsible for providing several services depending on how powerful they are. In these times, we only see a few big servers composed of several units so as to reinforce their capacities. This type of server hosts several virtual servers that serve the same old purposes as per the infrastructure requirements.
In our days, being a system administrator for bare-metal machines is just not enough. Virtual machines are on the rise; we should admit this. Big companies are no longer using old architectures; it is no longer a good option. A lot of money and huge management effort is required to sustain them.
In this chapter, we are going to explain virtualization as a concept, where we will see how to set up several virtualization technologies, and then give an example of how to create some virtual machines for each one of those technologies. Finally, we...
