Deno Application Deployment Guide

This guide provides instructions on how to build, dockerize, and deploy a simple Deno application to a Kubernetes cluster using Kind.

Prerequisites

• Docker
• Kubernetes CLI (kubectl)
• Kind (Kubernetes in Docker)
• Access to a Docker Hub account

Building the Deno Application

1. Write your Deno application. Ensure your main file is named app.ts.

2. Create a Dockerfile in the root of your project. Refer to the provided Dockerfile instructions in previous communications.

Creating the Docker Image

1. Build the Docker image:

   docker build -t yourusername/deno-app:latest .

   Replace yourusername with your Docker Hub username.

2. Run the Docker container locally (optional):

   docker run -it --init -p 8000:8000 yourusername/deno-app:latest

   Access the application at http://localhost:8000.

Pushing to Docker Hub

1. Login to Docker Hub:

   docker login

   Enter your Docker Hub credentials.

2. Push the image to Docker Hub:

   docker push yourusername/deno-app:latest

Deploying to Kubernetes using Kind

1. Create a Kind cluster:

   kind create cluster

2. Load the Docker image into Kind:

   kind load docker-image yourusername/deno-app:latest

3. Apply the Kubernetes manifests:

   • Deployment:

     kubectl apply -f deno-deployment.yaml

   • Service:

     kubectl apply -f deno-service.yaml

   • Ingress:

     kubectl apply -f deno-ingress.yaml

Accessing the Application

• For Kind, check the Ingress IP or use port-forwarding:

kubectl port-forward service/deno-service 8080:8000

Cleanup

To delete the deployed resources:

kubectl delete -f deno-deployment.yaml
kubectl delete -f deno-service.yaml
kubectl delete -f deno-ingress.yaml

To delete the Kind cluster:

kind delete cluster