Operating OpenShift

Chapter 3. Running Workloads on OpenShift

Manuel Dewald

At this point you should already have an OpenShift cluster that you can use to deploy applications. It may be a cluster running on VMs provisioned by a cloud provider or even a small cluster on your notebook using OpenShift Local. You can access the console and log in to the cluster with the oc command-line utility. But how do you deploy an application that your team built to the cluster?

Most applications running on OpenShift clusters are web-based. Such applications are usually accessed by users via a web browser, or as backends by apps installed to user-owned devices. For the sake of this chapter you can use an arranged deployment consisting of three different services to practice deploying application code to your OpenShift cluster. A small OpenShift Local cluster should provide enough capacity to deploy this application. However, to follow some parts of the chapter you will need a cluster that is accessible externally.

The application used in this chapter is the arcade gaming platform of a fictitious game publisher. It consists of the following components:

• Games, each running in its own service (for now there is only one game).

• A highscore service where the scores of every game and player can be shown.

• The platform service, used as entry point where customers can browse, start, and purchase games.

Figure 3-1 gives you an overview of the involved components and how they interact.

Figure 3-1. Components of the ...