Learning about Kubernetes, in the beginning, would feel like drinking from a fire-hose. They have a number of various abstractions to solve various problems, all related to one essential goal ??? Running containerized applications across multiple hosts. If you are unfamiliar with what containers are, take a few minutes to read our post on Docker and containers in general. Containers are tied down to usually one physical machine or a VM (which again runs on a single physical machine). You can have multiple containers on one machine, but not the other way round. This is where Kubernetes comes into the picture. What Kubernetes tries to do, is allow us to aggregate multiple numbers of these VMs and physical machines and enable us to deploy applications (inside containers) that would seamlessly run over these multiple interconnected computers as if it were one system.
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