The Kubernetes cluster architecture is almost impossible to grasp without getting inside a running cluster and discovering the components firsthand. No matter how you look at it, as Kubernetes administrators, we have to know what’s happening under the hood. When you finish this chapter, you will feel comfortable accessing all the components in a Kubernetes cluster, upgrading components when needed, and backing up the cluster configuration.
This chapter reviews part of the cluster architecture, installation, and configuration domain of the CKA curriculum. This domain covers the elements of a Kubernetes cluster, including key components and how to maintain a healthy Kubernetes cluster. The chapter encompasses the following competencies.
