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

Automating project onboarding using OpenUnison

Earlier in this chapter, we deployed the OpenUnison automation portal. This portal lets users request new namspaces to be created and allows developers to request access to these namespaces via a self-service interface. The workflows built into this portal are very basic but create the namespace and appropriate RoleBinding objects. What we want to do is build a workflow that integrates our platform and creates all of the objects we created manually earlier in this chapter. The goal is that we're able to deploy a new application into our environment without having to run the kubectl command (or at least minimize its use). This will require careful planning. Here's how our developer workflow will run:

Figure 14.6 – Platform developer workflow

Let's quickly run through the workflow that we see in the preceding figure:

  1. An application owner will request an application be created.
  2. ...