🚀 Red Hat OpenShift Lab

✅ Overview

This project successfully demonstrates working with Red Hat OpenShift using both the oc CLI and the web console. The lab included deploying an application from a Git repository, inspecting build configurations and image streams, and enabling autoscaling.

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📂 Repository Structure

openshift-lab/
├── README.md      # this file
└── images/        # place your screenshots here

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📝 Completed Steps

1. Environment Verification

• Opened a terminal session and confirmed the oc CLI was installed:

  oc version

• Navigated to the project workspace /home/project.

• Cloned the required repo:

  git clone https://github.com/ibm-developer-skills-network/CC201.git

📷 Screenshot: verifying CLI & cloning repo

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2. Using the oc CLI

• Listed pods running in the namespace:

  oc get pods

• Checked BuildConfigs and project details with:

  oc get buildconfigs
  oc project

📷 Screenshot: oc commands executed

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3. OpenShift Web Console

• Launched the OpenShift web console via Skills Network Toolbox.
• Explored both Administrator and Developer perspectives.
• Reviewed Dashboard, Overview, resources inventory, and YAML definitions. 📷 Screenshot: web console overview

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4. Deploying Application from Git

• Switched to Developer perspective → Topology view.

• Added a new application from Git:

  • Repo: https://github.com/sclorg/nodejs-ex.git
  • Selected Node.js builder image.

• Confirmed application appeared in Topology after build. 📷 Screenshot: deploy app from Git

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5. Inspect Build & ImageStream

• Viewed build logs (repository cloned, Dockerfile generated, image built & pushed).
• Explored Build Config (triggers, webhooks, strategies).
• Checked ImageStreamTag and image history. 📷 Screenshot: build logs and configs

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6. Application Access & Route

• Opened the application route from Topology view in a browser.
• Verified deployed Node.js app responded successfully. 📷 Screenshot: running Node.js app

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7. Autoscaling Setup (HPA)

• Edited Deployment YAML to add resource requests/limits:

resources:
  limits:
    cpu: 30m
    memory: 100Mi
  requests:
    cpu: 3m
    memory: 40Mi

• Created an HorizontalPodAutoscaler (HPA) with target CPU utilization 10%, min=1, max=3 replicas. 📷 Screenshot: HPA creation

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8. Autoscaling Verification

• Generated load on the application:

  for i in $(seq 1000); do curl -s -L <app_url> & done

• Observed scale up: Current Replicas → Desired Replicas = 3.

• Verified in UI with fruit entries simulating load. 📷 Screenshot: autoscaling in action

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🎯 Achievements

• ✅ Verified OpenShift CLI and environment
• ✅ Explored OpenShift web console (Admin & Developer perspectives)
• ✅ Deployed Node.js app directly from GitHub using s2i build strategy
• ✅ Inspected BuildConfig, logs, and ImageStream
• ✅ Accessed app via auto-generated route
• ✅ Configured & tested Horizontal Pod Autoscaler

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👨‍💻 Author

Developed and documented by Ayoub CHAIEB