Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
Book Image

The Kubernetes Workshop

By: Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)

The Kubernetes API

The Kubernetes API uses JSON over HTTP for its requests and responses. It follows the REST architectural style. You can use the Kubernetes API to read and write Kubernetes resource objects.


For more details about the RESTful API, please refer to

Kubernetes API allows clients to create, update, delete, or read a description of an object via standard HTTP methods (or HTTP verbs), such as the examples in the following table:

Figure 4.12: HTTP verbs and their usage

In the context of Kubernetes API calls, it is helpful to understand how these HTTP methods map to API request verbs. So, let's take a look at which verbs are sent through which methods:

  • GET: get, list, and watch

    Some example kubectl commands are kubectl get pod, kubectl describe pod <pod-name>, and kubectl get pod -w.

  • POST: create

    An example kubectl command is kubectl create -f <filename.yaml>.

  • PATCH: patch

    An example...