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

Using triggers with GitHub webhooks

In a CI/CD workflow, it is typical to use an event, such as a pull or push request on Git, to trigger a new pipeline run. With Tekton, you use EventListeners to listen for events and run one or more triggers. There are some out-of-the-box event processors, named Interceptors, for the following platforms:

  • GitHub: This allows you to validate and filter GitHub webhooks.
  • GitLab: The same as the previous point but for GitLab.
  • Bitbucket: The same as the previous points for Bitbucket.
  • CEL: This allows you to use Common Expression Language (CEL) to filter and modify payloads.
  • Webhook: This allows you to process any webhook payload and apply any business logic to it.

In our example, we will use a GitHub interceptor to process a webhook, filter push events, and trigger the pipeline we created previously. You can also implement your custom interceptors by implementing an object named ClusterInterceptors. Check out the links in...