kubeconfig is a configuration file that manages cluster, context, and authentication settings in Kubernetes, on the client side. Using the kubeconfig file, we are able to set different cluster credentials, users, and namespaces to switch between clusters or contexts within a cluster. It can be configured via the command line using the kubectl config subcommand or by updating a configuration file directly. In this section, we'll describe how to use kubectl config to manipulate kubeconfig and how to input a kubeconfig file directly.
If you have gone through the Working with namespace recipe in Chapter 2, Walking through Kubernetes Concepts, where we first mentioned kubeconfig, you will know of its basic concepts. Let's review some key points:
From the preceding diagram, we...