DevConf.US 2021

Since announcing Openshift version 4, deploying a single OpenShift cluster has become pretty simple. However, simple does not mean scalable, especially when you need to deploy tens, hundreds or even thousands of clusters. For example, a cellular company deploying OpenShift on Edge at the base of each of their cell towers. It would be very difficult to try and manage this using the default deployment tool.

Zero Touch Provisioning (ZTP), along with GitOps methodologies, can be leveraged to automate OpenShift deployment in parallel to multiple sites, without human intervention.

ZTP is a component of Open Cluster Management (OCM), an operator that enables a single OCP cluster to manage a fleet of clusters. This functionality uses declarative APIs to enable the configuration of a vast number of OpenShift clusters. ZTP integrates multiple open-source projects: OCM, Hive, Assisted Installer and Metal³.

In this session, you will learn about ZTP architecture and its components. We will discuss the installation flow and how the components interact with each other. We will learn about the possibility of installing in an air-gapped environment (disconnected from the Internet) and finally demonstrate how to install a Single Node Openshift on bare metal using only a few manifests.