To overcome that resources thirsty hypervisor problem, a new concept of Operation system level virtualization was introduced. A brief introduction to containersĪlthough hypervisor-based virtualization was a game changer, but soon It was realized that there are certain issues even with that hypervisor virtualization concept, no doubt we were able to run multiple operating systems on single CPU, but still there was the need of multiple OS for multiple services and not all of the operating systems were free to form License they still required to get purchased, additionally every virtual OS consumes huge amount of CPU, hard disk, and RAM. This virtualization concept was a revolution in resource utilization and cost cutting process. To get rid of such wastage of resources concept of virtualization was introduced, where hypervisors built a layer on hardware where multiple virtual machines can be installed and they behave and taste like real independent servers.
Today we will learn installing docker with Ubuntu, mint and CentOS 7 Linux, Before the evolution of the concept of virtualization, to run one application one dedicated server was required, if you wanted to run 20 application like mail server DNS services, web server or something else, you were required to buy 20 dedicated servers, every application hardly consuming 5-10% of total CPU capacity, therefore, it was a total wastage of resources.
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