From Serverless to AWS: Deploying Node.js Apps on EC2

my-node-app/
├── src/                    # Source code
│   ├── routes/             # Express routes or Next.js pages
│   ├── middleware/         # Custom middleware
│   ├── controllers/        # Business logic
│   └── app.js              # Main Express app or Next.js entry point
├── public/                 # Static assets (images, CSS, etc.)
├── package.json            # Node.js dependencies and scripts
├── ecosystem.config.js     # PM2 configuration file
├── .gitignore              # Ignore node_modules, logs, etc.
├── README.md               # Project documentation
└── next.config.js          # (Optional) Next.js configuration

   git init
   git add .
   git commit -m "Initial commit"
   

   git remote add origin https://github.com/your-username/my-node-app.git
   git branch -M main
   git push -u origin main
   

     sudo mkdir -p /etc/ssl/certs
     sudo mkdir -p /etc/ssl/private
     sudo nano /etc/ssl/certs/cloudflare_origin.pem
     

     sudo nano /etc/ssl/private/cloudflare_key.pem
     

     sudo chmod 644 /etc/ssl/certs/cloudflare_origin.pem
     sudo chmod 600 /etc/ssl/private/cloudflare_key.pem
     

       mv ~/Downloads/your-key.pem ~/.ssh/your-key.pem
       

       chmod 400 ~/.ssh/your-key.pem
       

       icacls "C:\Users\YourUser\.ssh\your-key.pem" /inheritance:r
       icacls "C:\Users\YourUser\.ssh\your-key.pem" /grant:r "%username%:R"
       

     ssh -i ~/.ssh/your-key.pem ubuntu@<vm-public-ip>
     

     sudo apt update
     curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
     sudo apt install -y nodejs
     

     sudo apt install -y git
     

     name: Deploy to AWS EC2
     on:
       push:
         branches:
           - main
     jobs:
       deploy:
         runs-on: ubuntu-latest
         steps:
           - name: Checkout code
             uses: actions/checkout@v3
           - name: Set up Node.js
             uses: actions/setup-node@v3
             with:
               node-version: '20'
           - name: Install dependencies
             run: npm install
           - name: Build (for Next.js)
             run: npm run build
             if: contains(github.event.head_commit.message, 'next')
           - name: Deploy to EC2
             env:
               EC2_HOST: ${{ secrets.EC2_HOST }}
               EC2_USER: ${{ secrets.EC2_USER }}
               EC2_KEY: ${{ secrets.EC2_KEY }}
             run: |
               echo "$EC2_KEY" > deploy_key.pem
               chmod 600 deploy_key.pem
               rsync -avz --delete -e "ssh -i deploy_key.pem -o StrictHostKeyChecking=no" ./ $EC2_USER@$EC2_HOST:/home/$EC2_USER/my-node-app
               ssh -i deploy_key.pem -o StrictHostKeyChecking=no $EC2_USER@$EC2_HOST << 'EOF'
                 cd /home/$EC2_USER/my-node-app
                 npm install
                 npm run build
                 pm2 restart ecosystem.config.js
               EOF
     

     rsync -avz -e "ssh -i ~/.ssh/your-key.pem" ./ ubuntu@<vm-public-ip>:/home/ubuntu/my-node-app
     

     ssh -i ~/.ssh/your-key.pem ubuntu@<vm-public-ip>
     

     cd /home/ubuntu/my-node-app
     npm install
     npm run build  # For Next.js
     

   sudo npm install -g pm2
   

   module.exports = {
     apps: [
       {
         name: 'my-node-app',
         script: 'src/app.js', // For Express
         // script: 'node_modules/next/dist/bin/next', // For Next.js
         // args: 'start', // For Next.js
         instances: 'max', // Use all CPU cores
         exec_mode: 'cluster', // Cluster mode for scalability
         env: {
           NODE_ENV: 'production',
           PORT: 3000,
         },
       },
     ],
   };
   

   pm2 start ecosystem.config.js
   

   pm2 save
   pm2 startup
   

   pm2 logs
   pm2 list
   

   sudo apt update
   sudo apt install -y nginx
   

   sudo nano /etc/nginx/sites-available/my-node-app
   

   server {
       listen 80;
       server_name example.com www.example.com; # Replace with your domain
       return 301 https://$host$request_uri; # Redirect HTTP to HTTPS
   }
   
   server {
       listen 443 ssl;
       server_name example.com www.example.com; # Replace with your domain
   
       ssl_certificate /etc/ssl/certs/cloudflare_origin.pem;
       ssl_certificate_key /etc/ssl/private/cloudflare_key.pem;
   
       ssl_protocols TLSv1.2 TLSv1.3;
       ssl_ciphers EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH;
       ssl_prefer_server_ciphers on;
   
       location / {
           proxy_pass http://localhost:3000; # Your Node.js app port
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection 'upgrade';
           proxy_set_header Host $host;
           proxy_cache_bypass $http_upgrade;
       }
   }
   

   sudo ln -s /etc/nginx/sites-available/my-node-app /etc/nginx/sites-enabled/
   sudo nginx -t # Test configuration
   sudo systemctl restart nginx
   

  npm install -g nodemon
  nodemon --exec "npm run build && pm2 restart ecosystem.config.js" src/