3: Kubernetes architecture
We’ve already said Kubernetes sits between applications and infrastructure and acts like the OS of the cloud. Figure 3.1 shows applications running on Kubernetes, which, in turn, runs on infrastructure.
The diagram shows four Kubernetes installations running on four different platforms. All the application can see is four Kubernetes clusters, it can’t see the infrastructure below. This makes it easier to migrate applications from one Kubernetes installation to another.
We call a Kubernetes installation a Kubernetes cluster.
There are a couple of things worth clarifying about Figure 3.1.
Firstly, it’s ...
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