How to make Kubernetes highly available

As you've observed earlier, Kubernetes is a clustering solution. Its distributed nature allows it to run on multiple machines. By splitting the different components across different machines, you'll be able to make your Kubernetes cluster highly available. Next, we will have a brief discussion on the different Kubernetes setups.

The single-node cluster

Installing all Kubernetes components on the same machine is the worst possible idea if you want to deploy Kubernetes in production. However, it is perfectly fine for testing your development. The single-node way consists of grouping all of the different Kubernetes components on the same host or a virtual machine:

Figure 2.8 – All of the components are working on the same machine

Typically, this arrangement is seen as a solid beginning for getting into Kubernetes through local testing. There's a tool called Minikube that makes it easy to set up a single-node Kubernetes on...