Book Image

Kubernetes and Docker - An Enterprise Guide

By : Scott Surovich, Marc Boorshtein
Book Image

Kubernetes and Docker - An Enterprise Guide

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)
Section 1: Docker and Container Fundamentals
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
Section 3: Running Kubernetes in the Enterprise

Introducing and setting up Heptio's Velero

Velero is an open source backup solution for Kubernetes from Heptio. It offers many features that are only available in commercial products, including scheduling, backup hooks, and granular backup controls – all for no charge.

While Velero is free, it has a learning curve since it does not include an easy-to-use GUI like most commercial products. All operations in Velero are carried out using their command-line utility, an executable called velero. This single executable allows you to install the Velero server, create backups, check the status of backups, restore backups, and more. Since every operation for management can be done with one file, restoring a cluster's workloads becomes a very easy process. In this chapter, we will create a second KinD cluster and populate it with a backup from an existing cluster.

But before that, we need to take care of a few requirements.

Velero requirements

Velero consists of...