Interacting with the Kubernetes API
In the introduction, we talked about the Kubernetes API as if it is just one thing, although in a sense it can be thought of in that way. However, the Kubernetes API we have been talking about is an aggregation of multiple APIs served by the core of Kubernetes, the control plane API server. The API server exposes an HTTP API that exposes the aggregated API and allows for the query and manipulation of API objects such as Pods, Deployments, Services, and Namespaces.
In this section, we will learn how to use KinD to create a local cluster. We will use the local cluster to manipulate a namespace resource using kubectl
. We will examine the basic structure of a Kubernetes resource and see how we can address individual resources by their Group, Version, Kind, Name, and usually, Namespace. Lastly, we'll discuss authentication and the kubeconfig
file. This section will prepare us for interacting with the Kubernetes API at a lower level using Go.