The basics of virtualization on Linux

Virtualization is the capacity to create a machine-like program that simulates, the physical behavior of a real machine running through virtual hardware including CPU, RAM, Hard disk, Network card, and so on, where those resources are all being taken from the physical machine running the virtual one.

Earlier, the way of managing services was to deploy a new server or upgrade the old one to meet the requirements of the new services to perform long and complex migrations in the event of a hardware failure. All the time, there would be too little RAM, too few disks, or low processing power. Managers got tired of trying to fix the existent system while paying a lot of money to help maintain an old server that was no longer supported. However, they did not have too many options, since the services running on those machines were very important and essential. Companies were deploying servers that would not work on their peak capacity, and there was no better...