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
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16
Index

Why should you care about a service mesh?

Istio provides a number of features that, without it, would require a developer to create them from scratch and edit their code. If a developer had to create many of the features provided by Istio, they would need to create the code in all of the languages that they are developing in. Need encryption between your services that are written in Java, Python, or Node? You would need to create the code three times – once for each programming language. The same would be true for traffic management, or any of the other features that are provided out of the box by Istio.

So, what can Istio provide you that should make you consider deploying it?

Workload observability

Have you ever tried keeping track of services and finding where the issue is when you have 20, 30, or more services running in your application?

Using the observability and tracing ability provided by Istio and add-on components, you can find and resolve issues...