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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

Interacting with the API server

As we mentioned earlier, you interact with the API server using either direct API requests or the kubectl utility. We will focus on using kubectl for the majority of our interaction in this book, but we will call out using direct API calls where applicable.

Using the Kubernetes kubectl utility

kubectl is a single executable file that allows you to interact with the Kubernetes API using a command-line interface (CLI). It is available for most major operating systems and architectures, including Linux, Windows, and Mac.

Installation instructions for most operating systems are located on the Kubernetes site at https://kubernetes.io/docs/tasks/tools/install-kubectl/. Since we are using Linux as our operating system for the exercises in the book, we will cover installing kubectl on a Linux machine. Follow these steps:

  1. To download the latest version of kubectl, you can run a curl command that will download it, as follows:
    curl -LO https://storage...

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