Book Image

OpenShift Multi-Cluster Management Handbook

By : Giovanni Fontana, Rafael Pecora
5 (1)
Book Image

OpenShift Multi-Cluster Management Handbook

5 (1)
By: Giovanni Fontana, Rafael Pecora

Overview of this book

For IT professionals working with Red Hat OpenShift Container Platform, the key to maximizing efficiency is understanding the powerful and resilient options to maintain the software development platform with minimal effort. OpenShift Multi-Cluster Management Handbook is a deep dive into the technology, containing knowledge essential for anyone who wants to work with OpenShift. This book starts by covering the architectural concepts and definitions necessary for deploying OpenShift clusters. It then takes you through designing Red Hat OpenShift for hybrid and multi-cloud infrastructure, showing you different approaches for multiple environments (from on-premises to cloud providers). As you advance, you’ll learn container security strategies to protect pipelines, data, and infrastructure on each layer. You’ll also discover tips for critical decision making once you understand the importance of designing a comprehensive project considering all aspects of an architecture that will allow the solution to scale as your application requires. By the end of this OpenShift book, you’ll know how to design a comprehensive Red Hat OpenShift cluster architecture, deploy it, and effectively manage your enterprise-grade clusters and other critical components using tools in OpenShift Plus.
Table of Contents (23 chapters)
Part 1 – Design Architectures for Red Hat OpenShift
Part 2 – Leverage Enterprise Products with Red Hat OpenShift
Part 3 – Multi-Cluster CI/CD on OpenShift Using GitOps
Part 4 – A Taste of Multi-Cluster Implementation and Security Compliance
Part 5 – Continuous Learning

What is Argo CD?

In theory, it is possible to adopt GitOps without the need to use any specific tool. You could implement scripts and automation to deploy and manage your applications using declarative files from Git that describe your systems. However, that would be costly and time-consuming. The good news is that there are some great open source options for Kubernetes that are stable and work well. At the time of writing, the main tools for Kubernetes are Argo CD and Flux CD; both are great tools but in this book, we will explore Argo CD, which comes at no additional cost with a Red Hat OpenShift subscription.

In a nutshell, Argo CD is a tool that is capable of reading a set of Kubernetes manifests, Helm charts, or Jsonnet files stored in a Git repository and applying them to a Kubernetes namespace. Argo CD is not only able to apply manifests, though – it can also automate self-healing, object pruning, and other great capabilities, as we will explore in this chapter.