Implementing Qwik.js with Kubernetes allows developers to deploy highly performant and scalable web applications. This tutorial provides a step-by-step guide to help you set up your Qwik.js app on a Kubernetes cluster efficiently.

Prerequisites

  • Basic knowledge of Qwik.js and Kubernetes
  • Node.js and npm installed on your local machine
  • Access to a Kubernetes cluster (local or cloud-based)
  • kubectl configured to interact with your cluster
  • Docker installed for containerization

Step 1: Create Your Qwik.js Application

Start by initializing a new Qwik.js project using the following commands:

npm create qwik@latest

Follow the prompts to set up your project directory. Once completed, navigate into your project folder:

cd your-qwik-project

Build your application locally to ensure it runs correctly:

npm run build

Step 2: Containerize Your Application

Create a Dockerfile in your project root with the following content:

FROM node:18-alpine

WORKDIR /app

COPY package*.json ./

RUN npm install

COPY . .

RUN npm run build

EXPOSE 3000

CMD ["npm", "start"]

Build your Docker image:

docker build -t qwik-k8s-app .

Step 3: Push Image to Container Registry

Tag your image appropriately and push it to your preferred container registry, such as Docker Hub:

docker tag qwik-k8s-app yourdockerhubusername/qwik-k8s-app:latest

docker push yourdockerhubusername/qwik-k8s-app:latest

Step 4: Create Kubernetes Deployment and Service

Create a deployment YAML file named deployment.yaml with the following content:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: qwik-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: qwik-app
  template:
    metadata:
      labels:
        app: qwik-app
    spec:
      containers:
      - name: qwik-container
        image: yourdockerhubusername/qwik-k8s-app:latest
        ports:
        - containerPort: 3000

And a service YAML file named service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: qwik-service
spec:
  type: LoadBalancer
  selector:
    app: qwik-app
  ports:
  - protocol: TCP
    port: 80
    targetPort: 3000

Step 5: Deploy to Kubernetes

Apply the deployment and service configurations:

kubectl apply -f deployment.yaml

kubectl apply -f service.yaml

Check the status of your deployment:

kubectl get all

Step 6: Access Your Application

If your cluster supports LoadBalancer, obtain the external IP:

kubectl get svc qwik-service

Open your browser and navigate to the external IP address to see your Qwik.js application running on Kubernetes.

Conclusion

Deploying Qwik.js applications with Kubernetes enhances scalability and performance. By containerizing your app and managing it through Kubernetes, you ensure a robust deployment environment suitable for production.