docker-compose

README.md

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+# Simple Microservices Todo App
+
+This project consists of two separate microservices: a backend and a frontend.
+
+## Project Structure
+
+- `backend/`: Node.js Express API.
+- `frontend/`: Node.js Express server serving static HTML.
+
+## How to Separate into Two Repositories
+
+If you want to host these on separate GitHub repositories:
+
+1.  **Backend Repository**:
+    ```bash
+    cd backend
+    git init
+    git add .
+    git commit -m "Initial commit for backend"
+    # Create a new repo on GitHub and follow their instructions to push
+    ```
+
+2.  **Frontend Repository**:
+    ```bash
+    cd frontend
+    git init
+    git add .
+    git commit -m "Initial commit for frontend"
+    # Create a new repo on GitHub and follow their instructions to push
+    ```
+
+## Local Development (Monorepo mode)
+
+To run both services together from this root directory:
+
+1. Install root dependencies: `npm install`
+2. Install sub-service dependencies: `npm run install:all`
+3. Start both: `npm start`
+
+### CI/CD with Jenkins, Harbor & Kubernetes
+
+The `Jenkinsfile` in each microservice is now fully integrated with Kubernetes:
+1. **Build & Push**: Builds the Docker image and pushes it to **Harbor**.
+2. **Dynamic Deployment**: Uses `sed` to inject the unique build image tag into the microservice-specific Kubernetes manifest.
+3. **K8s Rollout**: Executes `kubectl apply` and waits for a successful rollout status.
+
+**Pipeline Configuration:**
+- Ensure `kubectl` is installed and configured on your Jenkins agent.
+- Update the `HARBOR_*` and `K8S_CREDENTIALS_ID` variables in each `Jenkinsfile`.
+- Each microservice uses its own `k8s-deployment.yaml` file.
+
+## Kubernetes Deployment (Manual)
+
+Each microservice contains its own Kubernetes manifest for complete independence:
+- `backend/k8s-deployment.yaml`
+- `frontend/k8s-deployment.yaml`
+
+### 1. Update Manifests
+- In `backend/k8s-deployment.yaml`, update the `image` field with your actual Harbor image path (or leave as `IMAGE_PATH_PLACEHOLDER` if using Jenkins).
+- In `frontend/k8s-deployment.yaml`:
+    - Update the `image` field with your Harbor image path.
+    - Update the `BACKEND_URL` in the `ConfigMap` section to point to your backend service's accessible IP/URL (e.g., your Node IP and the 30001 NodePort).
+
+### 2. Deploy
+Run the following commands:
+```bash
+kubectl apply -f backend/k8s-deployment.yaml
+kubectl apply -f frontend/k8s-deployment.yaml
+```
+
+### 3. Verify
+```bash
+kubectl get pods
+kubectl get services
+```
+The services are configured as `NodePort`:
+- **Frontend**: Port `30000`
+- **Backend**: Port `30001`
+
+### Using Docker Compose
+
+Alternatively, run everything using Docker:
+```bash
+docker-compose up --build
+```

docker-compose.yml

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+version: '3.8'
+
+services:
+  backend:
+    build: ./backend
+    ports:
+      - "3001:3001"
+    environment:
+      - PORT=3001
+
+  frontend:
+    build: ./frontend
+    ports:
+      - "3000:3000"
+    environment:
+      - PORT=3000
+      - BACKEND_URL=http://localhost:3001
+    depends_on:
+      - backend

package-lock.json

@@ -0,0 +1,305 @@
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+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
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+      "version": "1.0.0",
+      "license": "ISC",
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+}

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "simple-node-app",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start:backend": "node backend/index.js",
+    "start:frontend": "node frontend/index.js",
+    "start": "concurrently \"npm run start:backend\" \"npm run start:frontend\"",
+    "install:all": "cd backend && npm install && cd ../frontend && npm install",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "concurrently": "^9.2.1"
+  }
+}