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Kubernetes and Docker - An Enterprise Guide

Kubernetes and Docker - An Enterprise Guide

By : Scott Surovich, Marc Boorshtein
4.6 (13)
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Kubernetes and Docker - An Enterprise Guide

Kubernetes and Docker - An Enterprise Guide

4.6 (13)
By: Scott Surovich, Marc Boorshtein

Overview of this book

Containerization has changed the DevOps game completely, with Docker and Kubernetes playing important roles in altering the flow of app creation and deployment. This book will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book begins by introducing you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll then get to grips with containerization and understand its core functionalities, including how to create ephemeral multinode clusters using kind. As you make progress, you’ll learn about cluster architecture, Kubernetes cluster deployment, and cluster management, and get started with application deployment. Moving on, you’ll find out how to integrate your container to a cloud platform and integrate tools including MetalLB, externalDNS, OpenID connect (OIDC), pod security policies (PSPs), Open Policy Agent (OPA), Falco, and Velero. Finally, you will discover how to deploy an entire platform to the cloud using continuous integration and continuous delivery (CI/CD). By the end of this Kubernetes book, you will have learned how to create development clusters for testing applications and Kubernetes components, and be able to secure and audit a cluster by implementing various open-source solutions including OpenUnison, OPA, Falco, Kibana, and Velero.
Table of Contents (20 chapters)
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1
Section 1: Docker and Container Fundamentals
5
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
9
Section 3: Running Kubernetes in the Enterprise

Aren't they going away?

When Kubernetes 1.11 was released in 2018, it was revealed that PSPs will likely never go General Availability (GA). This revelation was based on feedback that PSPs were difficult to use and the issues were systemic from their design. The discussion that came out of this revelation focused on three potential solutions:

  • Fix PSPs/reimplement a new standard: These two options are bundled together because it's believed "fixing" PSPs will result in a standard that breaks backward-compatibility, resulting in a new policy system. Another option that's been floated is to port OpenShift's SCC implementation upstream.
  • Remove PSPs: An argument has been made that this should be implementation-specific and so up to the implementer. Since PSPs are implemented using an admission controller, the argument is that this can be left to third parties.
  • Provide a "basic" implementation: This is a hybrid approach where the upstream...
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