-
STEP 1 — Create the Project
mkdir my-node-app
cd my-node-app
Create server.js:
nano server.js
const express = require("express");
const app = express();
app.get("/", (req, res) => {
res.send("Hello from your custom Node.js Docker image running on Kubernetes!");
});
app.listen(8080, () => console.log("Server running on port 8080"));
Create package.json:
nano package.json
{
"name": "my-node-app",
"version": "1.0.0",
"main": "server.js",
"dependencies": {
"express": "^4.18.2"
}
}
-
STEP 2 — Create Dockerfile
nano Dockerfile
FROM node:18-alpine
WORKDIR /app
COPY package.json .
RUN npm install
COPY . .
EXPOSE 8080
CMD ["node", "server.js"]
-
STEP 3 — Build & Push Docker Image
docker build -t mycybersecurity/my-node-app:v1 .
docker push mycybersecurity/my-node-app:v1
-
STEP 4 — Deploy to Kubernetes
Create deployment file deployment.yaml:
nano deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: custom-app-deployment
spec:
replicas: 2
selector:
matchLabels:
app: custom-app
template:
metadata:
labels:
app: custom-app
spec:
containers:
- name: custom-app
image: mycybersecurity/my-node-app:v1
ports:
- containerPort: 8080
Apply:
kubectl apply -f deployment.yaml
kubectl get pods
-
STEP 5 — Expose Using NodePort
Create service file service.yaml:
nano service.yaml
apiVersion: v1
kind: Service
metadata:
name: custom-app-service
spec:
type: NodePort
selector:
app: custom-app
ports:
- port: 8080
targetPort: 8080
nodePort: 30080 # you can choose any (30000–32767)
Apply:
kubectl apply -f service.yaml
kubectl get svc
-
STEP 6 — Test the App
Find your node IP:
kubectl get nodes -o wide
Example:
192.168.49.2
Test:
curl http://192.168.49.2:30080
Expected output:
Hello from your custom Node.js Docker image running on Kubernetes!
Research Breakthrough Possible @S-Logix
