mypacman's Introduction

Demonstrate multi resource application

Tool Requirements

OpenShift CLI Version >= 4.3.0
Needed for kustomize

oc version

Summary

This provides a Pac-man application, where GitOps flows can be used to change the playing board from blue to green.

Prerequisite

1+ managed-clusters
Those Managed-Cluster to target, must have a label with metadata.labels.usage: development
A fork of this repository

Application Console: Create a new subscription

Using the application console, you can easily create an Application that runs Pac-man on your cluster(s). You can then update the deployment, and change the image from latest to green, using a Git merge. This change will then be propogated to any subscribed clusters.

Console

Open the Red Hat Advanced Cluster Management for Kubernetes console
Navigate on the left navigation menu to Managed applications
Choose Create application
Enter the following values:

Name: pacman
Namespace: pacman
Repository types Git
URL https://github.com/REPO_FORK_NAME/application-samples.git
Branch main
Path pacman
Select Deploy application resources only on clusters matching specified labels
Label name usage
Label value development

Click Save

Viewing

Navigate on the left navigation menu to Managed applications
Click the pacman Application name.
View the Topology
Click the Route nodes to obtain the Pac-man URL
Click the URL to see a Red Hat landing page with nginx version

Changing the background colour

In Github, using your fork of this repository, edit the ./pacman/deployment.yaml and change the image tag from latest to green
Commit your change
Within 60s the background of the Pac-man board will change to green (don't forget to refresh your browser)
The demo is ready to be run again

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