Book Image

Modern DevOps Practices

By : Gaurav Agarwal
Book Image

Modern DevOps Practices

By: Gaurav Agarwal

Overview of this book

Containers have entirely changed how developers and end-users see applications as a whole. With this book, you'll learn all about containers, their architecture and benefits, and how to implement them within your development lifecycle. You'll discover how you can transition from the traditional world of virtual machines and adopt modern ways of using DevOps to ship a package of software continuously. Starting with a quick refresher on the core concepts of containers, you'll move on to study the architectural concepts to implement modern ways of application development. You'll cover topics around Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools that will help you to build a base. As you advance, the book covers the core elements of cloud integration (AWS ECS, GKE, and other CaaS services), continuous integration, and continuous delivery (GitHub actions, Jenkins, and Spinnaker) to help you understand the essence of container management and delivery. The later sections of the book will take you through container pipeline security and GitOps (Flux CD and Terraform). By the end of this DevOps book, you'll have learned best practices for automating your development lifecycle and making the most of containers, infrastructure automation, and CaaS, and be ready to develop applications using modern tools and techniques.
Table of Contents (19 chapters)
1
Section 1: Container Fundamentals and Best Practices
7
Section 2: Delivering Containers
15
Section 3: Modern DevOps with GitOps

Chapter 8: IaC and Config Management in Action

In the previous chapter, we looked at configuration management with Ansible and the technology's core concepts. We also discussed Terraform and IaC in Chapter 6, Infrastructure as Code (IaC) with Terraform. Now let's apply the principles of both technologies to a practical situation. Let's boot up a scalable Linux Apache MySQL and PHP (LAMP) stack on Azure with Terraform, Ansible, and another tool Packer that we'll discuss in this chapter.

In this chapter, we're going to cover the following main topics:

  • Immutable infrastructure with Hashicorp's Packer
  • Creating the Apache and MySQL playbook
  • Building the Apache and MySQL images using Packer and Ansible provisioners
  • Creating the required infrastructure with Terraform