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

Questions

  1. True or false: Istio is an API Gateway.
    1. True
    2. False

    Answer: b. False – Istio is a service mesh, and while it has many functions of a gateway, it doesn't have all of them (such as schema checking).

  2. Should I always build applications as microservices?
    1. Obviously, this is the way.
    2. Only if a microservices architecture aligns with your organization's structure and needs.
    3. No, microservices are more trouble than they're worth.
    4. What's a microservice?

    Answer: b – Microservices are great when you have a team that is able to make use of the granularity they provide.

  3. What is a monolith?
    1. A large object that appears to be made from a single piece by an unknown maker
    2. An application that is self-contained
    3. A system that won't run on Kubernetes
    4. A product from a new start-up
    ...