Kubernetes concepts

In this section, I'll briefly introduce many important Kubernetes concepts and give you some context as to why they are needed and how they interact with other concepts. The goal is to get familiar with these terms and concepts. Later, we'll see how these concepts are woven together and organized into API groups and resource categories to achieve awesomeness. You can consider many of these concepts as building blocks. Some of the concepts, such as nodes and masters, are implemented as a set of Kubernetes components. These components are at a different abstraction level, and I discuss them in detail in a dedicated section later in this chapter – Kubernetes components.

Here is the famous Kubernetes architecture diagram:

Figure 1.1: Kubernetes architecture diagram

Clusters

A cluster is a collection of hosts (nodes) that provide compute, memory, storage, and networking resources. Kubernetes uses these resources to run the various...