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


Now, some further steps should be performed before deploying the cluster. The first step in the installation is to create the manifest files. We strongly recommend you create a backup of the install-config.yaml file before running the following command, as this command removes the original file and you will need to create it again from scratch if you need to retry the installation:

$ ./openshift-install create manifests --dir=home/user/ocp/

Open the ~/ocp/manifests/cluster-scheduler-02-config.yml file in your preferred editor. Change the mastersSchedulable parameter to false if you go for a regular cluster, or true if you decided to provision a three-node cluster.

You should now generate the Ignition files by running the following command:

$ ./openshift-install create ignition-configs --dir=home/user/ocp/

After the previous command, you should have three new Ignition files: bootstrap.ign, master.ign, and worker.ign.

Copy these three files to the HTTP...