Understanding Kubernetes cluster architecture

To start, let’s dive into the different Kubernetes architectures and have a look at each one of them in detail.

Upstream vanilla Kubernetes architecture

A Kubernetes cluster has a set of worker nodes that are responsible for running the actual containerized applications or workloads. A Kubernetes cluster can have as few as 1 or as many as 5,000 worker nodes, with the latest version being Kubernetes 1.27 at the time of writing this chapter.

For quick testing purposes, it is common to spin up a single node. However, in production environments, a Kubernetes cluster typically consists of multiple worker nodes to ensure high availability and fault tolerance.

Kubernetes follows a master/slave architecture, where one device or process acts as the master to control one or more slave nodes. This architecture facilitates efficient communication and coordination within the cluster.

In a general Kubernetes cluster architecture...