Book Image

Kubernetes – An Enterprise Guide - Second Edition

By : Marc Boorshtein, Scott Surovich
Book Image

Kubernetes – An Enterprise Guide - Second Edition

By: Marc Boorshtein, Scott Surovich

Overview of this book

Kubernetes has taken the world by storm, becoming the standard infrastructure for DevOps teams to develop, test, and run applications. With significant updates in each chapter, this revised edition will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book introduces you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll get to grips with containerization and understand its core functionalities such as creating ephemeral multinode clusters using KinD. The book has replaced PodSecurityPolicies (PSP) with OPA/Gatekeeper for PSP-like enforcement. You’ll integrate your container into a cloud platform and tools including MetalLB, externalDNS, OpenID connect (OIDC), Open Policy Agent (OPA), Falco, and Velero. After learning to deploy your core cluster, you’ll learn how to deploy Istio and how to deploy both monolithic applications and microservices into your service mesh. Finally, you will discover how to deploy an entire GitOps platform to Kubernetes using continuous integration and continuous delivery (CI/CD).
Table of Contents (17 chapters)
15
Other Books You May Enjoy
16
Index

Creating a KinD cluster

Now that you have met all the requirements, you can create your first cluster using the KinD executable. The KinD utility can create a single-node cluster, as well as a complex cluster that's running multiple nodes for the control plane with multiple worker nodes. In this section, we will discuss the KinD executable options. By the end of the chapter, you will have a two-node cluster running – a single control plane node and a single worker node.

For the exercises in this book, we will install a multi-node cluster. The simple cluster configuration is an example and should not be used for our exercises.

Creating a simple cluster

To create a simple cluster that runs the control plane and a worker node in a single container, you only need to execute the KinD executable with the create cluster option.

Let's create a quick single-node cluster to see how quickly KinD creates a fast development cluster. On your host, create...