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Implementing GitOps with Kubernetes
Implementing GitOps with Kubernetes

Implementing GitOps with Kubernetes: Automate, manage, scale, and secure infrastructure and cloud-native applications on AWS and Azure

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Profile Icon Pietro Libro Profile Icon Artem Lajko
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Paperback Aug 2024 444 pages 1st Edition
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Arrow left icon
Profile Icon Pietro Libro Profile Icon Artem Lajko
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$44.99
Paperback Aug 2024 444 pages 1st Edition
eBook
$24.99 $35.99
Paperback
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Free Trial
Renews at $19.99p/m
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$24.99 $35.99
Paperback
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Implementing GitOps with Kubernetes

An Introduction to GitOps

In this opening chapter, we’ll delve into GitOps, an innovative approach that’s revolutionizing software development and operations. This chapter begins with the tale of GitOps, focusing on its transformative effect on organizational culture and workflows. The Fundamentals of GitOps section outlines its core principles, such as the centralization of Git, its declarative approach, and automated synchronization. Traditional CI/CD with DevOps against GitOps traces the evolution of software deployment, contextualizing GitOps in the broader history of the field. This chapter will also contrast traditional CI/CD and DevOps methodologies with GitOps, highlighting GitOps as an evolution in managing complex systems. We’ll conclude by discussing the advantages of adopting GitOps for platform engineering while illustrating its efficiency, consistency, and adaptability.

In this chapter, we’ll cover the following topics:

  • GitOps unveiled...

Technical requirements

To follow along with this chapter, you need to have basic knowledge of version control, Infrastructure as Code (IaC), continuous integration (CI), continuous delivery (CD), and Kubernetes. Basic knowledge of major cloud providers, such as Google Cloud Platform (GCP), AWS, and Azure, will be beneficial.

GitOps unveiled – reshaping development culture and practices

In the realm of modern software development and operations, GitOps emerges as a confluence of ideas and practices, redefining the approach to managing complex systems.

The term GitOps was first introduced by Alexis Richardson, the co-founder of Weaveworks, in August 2017 through a series of blog posts. Richardson described GitOps as a methodology where developer tools are pivotal in driving operational procedures. This approach emphasized the significance of using declarative tools and advocated for the best practices wherein configurations are treated as code. Consequently, these configurations should be subject to version control, aligning with the core principles of GitOps.

This innovative concept marked a shift in how software development and IT operations teams approach how infrastructure and applications are managed and deployed, promoting a more efficient, transparent, and reliable process.

GitOps...

The fundamentals of GitOps and the advantages of adopting it for platform engineering

DevOps emerged as a response to these silos, blending the roles of development and operations. It extended the principles of CI/CD to include a cultural shift toward collaboration, aiming to break down the barriers between developers and IT operations. The emphasis was on a holistic approach to the software life cycle, ensuring that both development and operational considerations were integrated from the start. DevOps embraced practices such as IaC and monitoring, fostering a more responsive and agile environment.

GitOps, a more recent innovation, builds upon these foundations but introduces a significant shift: it takes the principles of DevOps and CI/CD and centralizes them around the Git repository.

In a GitOps story, as illustrated in Figure 1.5, everything begins with a Git repository, where the entire state of a system – code, configuration, environment settings, and even documentation...

Why GitOps?

Adopting GitOps for platform engineering brings a multitude of advantages, reshaping how teams interact with infrastructure and applications. This methodology leverages the strengths of Git, automation, and declarative configurations, providing a robust framework for managing complex systems. Here are some of the key benefits:

  • Declarative and immutable nature: GitOps focuses on declaring the desired state of systems rather than detailing imperative scripts. It adopts an immutable infrastructure approach where changes are made by replacing resources rather than modifying existing ones, enhancing consistency and stability.
  • Automated synchronization: Central to GitOps is automatically synchronizing the system state with the configurations described in Git to cover the full life cycle of infrastructure and applications, including deployment, updates, scaling, and recovery.
  • Pull request workflow integration: Operational processes in GitOps are deeply integrated...

The integration between GitOps, IaC, and Kubernetes

In this section, we’ll delve into the intricate integration of GitOps, IaC, and Kubernetes, along with key tools such as Argo CD and Flux CD. We’ll explore how this cohesive blend enhances cloud-native operations, streamlining deployment processes and bolstering security, thereby revolutionizing the way infrastructure is managed and applications are deployed in modern software development environments.

GitOps and IaC

IaC involves managing and provisioning infrastructure via code rather than manual procedures. This approach involves creating configuration files that detail your infrastructure requirements, thus simplifying the process of modifying and disseminating these configurations. IaC guarantees consistent provisioning of the same environment each time, and at the same time, IaC transforms configuration specifications into coded documentation, improving configuration management.

This approach helps avoid...

Summary

This chapter provided an in-depth introduction to GitOps, exploring its transformative impact on software development and operations. We began by contrasting GitOps with traditional CI/CD and DevOps methodologies, highlighting its unique approach and advantages.

Then, we covered the history and evolution of deployment strategies that led to GitOps. Key principles such as Git centralization, the declarative approach, automated synchronization, and continuous feedback were discussed, emphasizing GitOps’ role in enhancing efficiency, consistency, and collaboration in platform engineering.

Additionally, we delved into GitOps’ integration with tools such as Kubernetes, showcasing its scalability and security advantages in modern cloud environments. We concluded by underscoring the significance of adopting GitOps for its robust framework and adaptability to evolving technological landscapes.

In Chapter 2, we’ll dive into the practicalities of GitOps...

Further reading

To learn more about the topics that were covered in this chapter, take a look at the following resources:

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Key benefits

  • Master basic and advanced GitOps concepts for efficient cloud-native architectural design and application deployment
  • Set up GitOps workflows for Kubernetes, integrate CI/CD pipelines, and optimize deployment strategies
  • Perform continuous deployment using GitHub, Hel
  • Purchase of the print or Kindle book includes a free PDF eBook

Description

This book covers actionable GitOps practices for automated, secure Kubernetes deployments with industry-tested scenarios. You’ll be able to leverage GitOps to tackle cloud-native software delivery challenges, such as preventing data drifts between systems and Git repositories, and ensuring rapid, error-free deployments. The book introduces GitOps core concepts and principles and then delves into integrating version control and GitOps tools such as Argo CD, Flux CD, Helm, and Kustomize with Kubernetes. You’ll learn about scaling GitOps across multiple clusters, architectural designs for efficient cloud-native operations, and the cultural transformation needed to support GitOps adoption within an organization. As you progress, you’ll be able to automate infrastructure and implement CI/CD processes on OpenShift, MS Azure, and AWS platforms using GitOps, Terraform, OpenTofu, and Argo CD. You’ll also explore examples and best practices for integrating observability, enhancing security, managing financial operations (FinOps), and future trends such as AI and sustainability in GitOps. By the end of this book, you’ll have gained the skills you need to apply GitOps strategies for robust Kubernetes and cloud deployments, thereby boosting your productivity and efficiency.

Who is this book for?

This book is for DevOps engineers, platform engineers, SREs, and cloud engineers who want to get skilled at implementing GitOps practices effectively in cloud-native environments. A foundational understanding of cloud computing, containerization, infrastructure as code, DevOps, CI/CD principles, and Kubernetes will be helpful to get the most out of this book.

What you will learn

  • Delve into GitOps methods and best practices used for modern cloud-native environments
  • Explore GitOps tools such as GitHub, Argo CD, Flux CD, Helm, and Kustomize
  • Automate Kubernetes CI/CD workflows using GitOps and GitHub Actions
  • Deploy infrastructure as code using Terraform, OpenTofu, and GitOps
  • Automate AWS, Azure, and OpenShift platforms with GitOps
  • Understand multitenancy, rolling back deployments, and how to handle stateful applications using GitOps methods
  • Implement observability, security, cost optimization, and AI in GitOps practices
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Publication date : Aug 23, 2024
Length: 444 pages
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Language : English
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Table of Contents

20 Chapters
Part 1: Understanding GitOps via Uncomplicated Orchestrations/ Kubernetes Chevron down icon Chevron up icon
Chapter 1: An Introduction to GitOps Chevron down icon Chevron up icon
Chapter 2: Navigating Cloud-native Operations with GitOps Chevron down icon Chevron up icon
Chapter 3: Version Control and Integration with Git and GitHub Chevron down icon Chevron up icon
Chapter 4: Kubernetes with GitOps Tools Chevron down icon Chevron up icon
Part 2: Harnessing Advanced Orchestrations, Culture, and Control in GitOps Practices Chevron down icon Chevron up icon
Chapter 5: GitOps at Scale and Multitenancy Chevron down icon Chevron up icon
Chapter 6: GitOps Architectural Designs and Operational Control Chevron down icon Chevron up icon
Chapter 7: Cultural Transformation in IT for Embracing GitOps Chevron down icon Chevron up icon
Part 3: Hands-on Automating Infrastructure and CI/CD with GitOps Chevron down icon Chevron up icon
Chapter 8: GitOps with OpenShift Chevron down icon Chevron up icon
Chapter 9: GitOps for Azure and AWS Deployments Chevron down icon Chevron up icon
Chapter 10: GitOps for Infrastructure Automation – Terraform and Flux CD Chevron down icon Chevron up icon
Chapter 11: Deploying Real-World Projects with GitOps on Kubernetes Chevron down icon Chevron up icon
Part 4: Operational Excellence Through GitOps Best Practices Chevron down icon Chevron up icon
Chapter 12: Observability with GitOps Chevron down icon Chevron up icon
Chapter 13: Security with GitOps Chevron down icon Chevron up icon
Chapter 14: FinOps, Sustainability, AI, and Future Trends for GitOps Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
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