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

What is GitOps?

GitOps is a method that involves the implementation of DevOps such that Git forms the single source of truth. Instead of maintaining a long list of scripts and tooling to support this, GitOps focuses on writing declarative code for everything, including the infrastructure, configuration, and application code. That means you can spin anything out of thin air by simply using the Git repository. The idea is that you declare what you need in your Git repository, and there is tooling behind the scenes that ensures the desired state is always maintained in the running application and infrastructure surrounding it. The code to spin up the tooling also resides in Git, and you don't have anything outside of Git. That means everything, including the tooling, is automated in this process.

While GitOps also enables DevOps within the organization, its primary focus is on using Git to manage infrastructure provisioning and application software deployments. DevOps is a broad...