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Modern DevOps Practices

You're reading from   Modern DevOps Practices Implement, secure, and manage applications on the public cloud by leveraging cutting-edge tools

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Product type Paperback
Published in Jan 2024
Publisher Packt
ISBN-13 9781805121824
Length 568 pages
Edition 2nd Edition
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Author (1):
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Gaurav Agarwal Gaurav Agarwal
Author Profile Icon Gaurav Agarwal
Gaurav Agarwal
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Toc

Table of Contents (24) Chapters Close

Preface 1. Part 1:Modern DevOps Fundamentals
2. Chapter 1: The Modern Way of DevOps FREE CHAPTER 3. Chapter 2: Source Code Management with Git and GitOps 4. Chapter 3: Containerization with Docker 5. Chapter 4: Creating and Managing Container Images 6. Part 2:Container Orchestration and Serverless
7. Chapter 5: Container Orchestration with Kubernetes 8. Chapter 6: Managing Advanced Kubernetes Resources 9. Chapter 7: Containers as a Service (CaaS) and Serverless Computing for Containers 10. Part 3:Managing Config and Infrastructure
11. Chapter 8: Infrastructure as Code (IaC) with Terraform 12. Chapter 9: Configuration Management with Ansible 13. Chapter 10: Immutable Infrastructure with Packer 14. Part 4:Delivering Applications with GitOps
15. Chapter 11: Continuous Integration with GitHub Actions and Jenkins 16. Chapter 12: Continuous Deployment/Delivery with Argo CD 17. Chapter 13: Securing and Testing Your CI/CD Pipeline 18. Part 5:Operating Applications in Production
19. Chapter 14: Understanding Key Performance Indicators (KPIs) for Your Production Service 20. Chapter 15: Implementing Traffic Management, Security, and Observability with Istio 21. Index 22. Other Books You May Enjoy Appendix: The Role of AI in DevOps

The principles of GitOps

GitOps has the following key principles:

  • It describes the entire system declaratively: Having declarative code forms the first principle of GitOps. This means that instead of providing instructions on how to build your infrastructure, applying the relevant configuration, and deploying your application, you declare the end state of what you need. This means that your Git repository always maintains a single source of truth. As declarative changes are idempotent, you don’t need to worry about the state of your system as this will eventually become consistent with the code in Git.
  • It versions desired system state using Git: As Git forms an excellent version control system, you don’t need to worry too much about how to roll out and roll back your deployments. A simple Git commit means a new deployment, and a Git revert means a rollback. This means you do not need to worry about anything apart from ensuring that the Git repository reflects...
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