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)
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

Summary

Backing up clusters and workloads is a requirement for any enterprise cluster. In this chapter, we reviewed how to back up the etcd cluster database using etcdctl and the snapshot feature. We also went into detail on how to install Heptio's Velero in a cluster to back up and restore workloads. We closed out the chapter by copying workloads from an existing backup by restoring an existing backup on a new cluster.

Having a backup solution allows you to recover from a disaster or human error. A typical backup solution allows you to restore any Kubernetes object, including namespaces, persistent volumes, RBAC, services, and service accounts. You can also take all of the workloads from one cluster and restore them on a completely different cluster for testing or troubleshooting.

Coming up next, in our final chapter, we will pull together many of the previous lessons in this book to build a platform for both your developers and your admins. We will add source control...