Book Image

Repeatability, Reliability, and Scalability through GitOps

By : Bryan Feuling
Book Image

Repeatability, Reliability, and Scalability through GitOps

By: Bryan Feuling

Overview of this book

The world of software delivery and deployment has come a long way in the last few decades. From waterfall methods to Agile practices, every company that develops its own software has to overcome various challenges in delivery and deployment to meet customer and market demands. This book will guide you through common industry practices for software delivery and deployment. Throughout the book, you'll follow the journey of a DevOps team that matures their software release process from quarterly deployments to continuous delivery using GitOps. With the help of hands-on tutorials, projects, and self-assessment questions, you'll build your knowledge of GitOps basics, different types of GitOps practices, and how to decide which GitOps practice is the best for your company. As you progress, you'll cover everything from building declarative language files to the pitfalls in performing continuous deployment with GitOps. By the end of this book, you'll be well-versed with the fundamentals of delivery and deployment, the different schools of GitOps, and how to best leverage GitOps in your teams.
Table of Contents (17 chapters)
Section 1: Fundamentals of GitOps
Section 2: GitOps Types, Benefits, and Drawbacks
Section 3: Hands-On Practical GitOps

Chapter 6: Verified GitOps – Continuous Delivery Declaratively Defined

The last GitOps concept that we will cover is a relatively recent practice known as verified GitOps. The essential difference between verified GitOps and the other GitOps practices is the desire to leverage GitOps for the entirety of continuous delivery, rather than only for continuous deployment.

One operating requirement across all GitOps practices is the need for declarative language files to be stored in a source code manager and referenced at runtime. And, depending on which practice is being adopted, the number of required files is heavily impacted based on the desired manual intervention. This results in a balancing act between manual intervention steps and the number of declarative files.

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

  • Verified GitOps basics
  • Test, governance, deploy, verify, and restore as code
  • One file, many files, or somewhere...