Docker Online Training |Docker Training

What is Docker?

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What is Docker? ď‚— There are two ways of looking at Docker. The first

approach involves seeing Docker containers as really lightweight virtual machines, while the second approach is to see Docker as a software packaging and delivery platform. This latter approach has proven a lot more helpful to human developers and resulted in widespread adoption of the technology.

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An Overview of Docker Containers  Traditionally, cloud service providers used virtual

machines to isolate running applications from one another.  A hypervisor, or host operating system, provides virtual CPU, memory and other resources to many guest operating systems.  Each guest OS works as if it is running on an actual physical hardware and it is, ideally, unaware of other guests running on the same physical server.

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 However there are several problems with virtualization.

First, the provisioning of resources takes time.  Each virtual disk image is large and bulky and getting a VM ready for use can take up to a minute.  Second and a more important issue system resources are used inefficiently.  OS kernels are control freaks that want to manage everything that’s supposedly available to them. So when a guest OS thinks 2GB of memory is available to it, it takes control of that memory even if the applications running on that OS uses only half of it.

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Docker & Kubernetes

 On the other hand, when we run containerized

applications, we virtualize the operating system itself, not the hardware.  Now, instead of providing virtual hardware to a VM, you provide a virtual OS to your application.  You can run multiple applications and impose limitations on their resource utilization if you want, and each application will run oblivious to the hundreds of other containers it is running alongside.

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Contact ď‚— If you want to Learn Docker and Kubernetes online

Training Contact Visual path. Visual path is Leading Training Institute for Docker and Kubernetes online Training in Hyderabad. For More Details Call & What’sapp @9989971070

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