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 1: The Move to Containers

This first chapter will provide you with background knowledge of containers and how they change the entire IT landscape. While we understand that most DevOps practitioners will already be familiar with this, it is worth providing a refresher to build the rest of this book's base. While this book does not entirely focus on containers and their orchestration, modern DevOps practices heavily emphasize it.

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

  • The need for containers
  • Container architecture
  • Containers and modern DevOps practices
  • Migrating to containers from virtual machines

By the end of this chapter, you should be able to do the following:

  • Understand and appreciate why we need containers in the first place and what problems they solve.
  • Understand the container architecture and how it works.
  • Understand how containers contribute to modern DevOps practices.
  • Understand the high-level steps of moving from a Virtual Machine-based architecture to containers.