Module 10 - Container Orchestration with Kubernetes

This repository contains a demo project created as part of my DevOps studies in the TechWorld with Nana – DevOps Bootcamp.

Demo Project: Deploy Microservices with Helmfile

Technologies used: Kubernetes, Helm, Helmfile

Project Description:

• Deploy Microservices with Helm
• Deploy Microservices with Helmfile

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Prerequisites

• A running Kubernetes cluster (e.g., DigitalOcean)
• kubectl configured and connected to your cluster
• Helm installed (v3+)
• Helmfile installed (for Option 2)

Previous Steps

Step	Description	Repository
1	Deploy a Microservices Application on Kubernetes with Production & Security Best Practices	kubernetes-module-10.5
2	Create Helm Chart for Microservices	kubernetes-module-10.6

Project Structure

.
├── charts/
│   ├── microservice/       # Reusable Helm chart for all microservices
│   └── redis/              # Helm chart for Redis
├── values/                 # Per-service value overrides
│   ├── ad-service-values.yaml
│   ├── cart-service-values.yaml
│   ├── checkout-service-values.yaml
│   ├── currency-service-values.yaml
│   ├── email-service-values.yaml
│   ├── frontend-service-values.yaml
│   ├── payment-service-values.yaml
│   ├── productcatalog-service-values.yaml
│   ├── recommendation-service-values.yaml
│   ├── redis-values.yaml
│   └── shipping-service-values.yaml
├── helmfile.yaml           # Declarative Helmfile configuration
├── install.sh              # Manual Helm install script
└── uninstall.sh            # Manual Helm uninstall script

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Option 1: Deploy Microservices with Helm

This approach uses shell scripts that run individual helm install commands for each service.

Install

chmod u+x install.sh
./install.sh

Uninstall

chmod u+x uninstall.sh
./uninstall.sh

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Option 2: Deploy Microservices with Helmfile

Helmfile provides a declarative way to manage multiple Helm releases in a single file. See helmfile.yaml for the full configuration.

1. Install Helmfile

macOS:

brew install helmfile

Linux:

# Download the latest release from https://github.com/helmfile/helmfile/releases

2. Deploy all releases

helmfile sync

3. Verify deployment

helmfile list
kubectl get pod

4. Access the application

Get the external IP of the frontend service:

kubectl get svc

Then navigate to http://<EXTERNAL-IP> in your browser.

5. Clean up

helmfile destroy