Book Image

End-to-End Automation with Kubernetes and Crossplane

By : Arun Ramakani
Book Image

End-to-End Automation with Kubernetes and Crossplane

By: Arun Ramakani

Overview of this book

In the last few years, countless organizations have taken advantage of the disruptive application deployment operating model provided by Kubernetes. With Crossplane, the same benefits are coming to the world of infrastructure provisioning and management. The limitations of Infrastructure as Code with respect to drift management, role-based access control, team collaboration, and weak contract make people move towards a control-plane-based infrastructure automation, but setting it up requires a lot of know-how and effort. This book will cover a detailed journey to building a control-plane-based infrastructure automation platform with Kubernetes and Crossplane. The cloud-native landscape has an overwhelming list of configuration management tools that can make it difficult to analyze and choose. This book will guide cloud-native practitioners to select the right tools for Kubernetes configuration management that best suit the use case. You'll learn about configuration management with hands-on modules built on popular configuration management tools such as Helm, Kustomize, Argo, and KubeVela. The hands-on examples will be patterns that one can directly use in their work. By the end of this book, you'll be well-versed with building a modern infrastructure automation platform to unify application and infrastructure automation.
Table of Contents (16 chapters)
1
Part 1: The Kubernetes Disruption
4
Part 2: Building a Modern Infrastructure Platform
10
Part 3:Configuration Management Tools and Recipes

Evolving the APIs

Crossplane is primarily an API-based infrastructure automation platform. Changes to the APIs are inevitable as the business requirements and technology landscape evolve. We can classify these changes into three different buckets:

  • API implementation change
  • Non-breaking API contract change
  • Breaking API contract change

Let’s start with the API implementation change.

API implementation change

These changes are limited to the API implementation details without any changes to the contract. In other words, these are changes to Compositions YAML, a construct used by XR for API implementation. CompositionRevision is the Crossplane concept that will work with compositions to support such changes. If the --enable-composition-revisions flag is set while installing Crossplane, a CompositionRevision object is created with all the updates to composition. The name of the CompositionRevision object is autogenerated on every increment. The compositions...