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Master Deployment Guide for T&C Decoder Tool

Table of Contents

  1. Introduction
  2. Deployment Objectives
  3. Infrastructure Overview
  4. Pre-Deployment Checklist
  5. Deployment Environment Setup
  6. Backend Deployment
  7. Frontend Deployment
  8. Nginx Configuration
  9. CI/CD Pipeline Setup
  10. Monitoring and Logging
  11. Scaling and High Availability
  12. Backup and Recovery
  13. Security Considerations
  14. Post-Deployment Testing
  15. Maintenance and Updates
  16. Conclusion
  17. Appendix

1. Introduction

This Master Deployment Guide provides detailed instructions for deploying the Terms & Conditions (T&C) Decoder Tool to a production environment. It covers the setup and configuration of servers, deployment of frontend and backend applications, database integration, CI/CD pipeline configuration, monitoring, scaling strategies, and post-deployment activities. This guide ensures a smooth and efficient deployment process, aligning with our commitment to delivering a secure and reliable application to our users.

2. Deployment Objectives

  • Reliability: Ensure the application is available and performs optimally for users.
  • Scalability: Configure the infrastructure to handle increasing load and user growth.
  • Security: Implement best practices to protect the application and user data.
  • Automation: Utilize CI/CD pipelines for efficient deployment and updates.
  • Monitoring: Set up systems to monitor application health and respond to issues proactively.

3. Infrastructure Overview

Hosting Environment

  • Cloud Provider: DigitalOcean
  • Server OS: Ubuntu 20.04 LTS
  • Web Server: Nginx
  • Process Manager: PM2 for Node.js applications
  • Database: PostgreSQL (Managed by DigitalOcean)
  • Domain Registrar: [Your Domain Provider]
  • SSL/TLS Certificates: Let's Encrypt via Certbot

Architecture Diagram

Note: Insert an architecture diagram illustrating the deployment setup, including servers, load balancers, databases, and network flow.

4. Pre-Deployment Checklist

  • Domain name registered and DNS configured.
  • DigitalOcean account set up with necessary permissions.
  • SSH keys generated and added to the server.
  • Backend and frontend codebases are finalized and tested.
  • Environment variables and secrets are securely stored.
  • SSL certificates are ready for installation.
  • CI/CD pipeline configurations are prepared.

5. Deployment Environment Setup

Server Provisioning

  1. Create Droplets:

    • Provision at least two Droplets: one for the application server and one for the database if not using managed databases.
    • Recommended specifications for the application server:
      • CPU: 2 vCPUs
      • RAM: 4 GB
      • Storage: 80 GB SSD
      • Network: Ensure proper bandwidth allocation.

  2. Operating System:

    • Use Ubuntu 20.04 LTS for stability and long-term support.

  3. Access Configuration:

    • Use SSH keys for secure access.
    • Disable password authentication in SSH configuration.

Domain and SSL Configuration

  1. DNS Settings:

    • Point your domain (e.g., www.tcdecodertool.com) to your server's IP address using an A record.
    • Set up CNAME records if necessary.

  2. SSL/TLS Certificates:

    • Install Certbot:

      sudo apt update
sudo apt install certbot python3-certbot-nginx

    • Obtain SSL Certificates:

      sudo certbot --nginx -d tcdecodertool.com -d www.tcdecodertool.com

    • Configure automatic renewal:

      sudo systemctl status certbot.timer

6. Backend Deployment

Codebase Preparation

  1. Clone the Repository:

    git clone https://github.com/yourcompany/tc-decoder-backend.git

  2. Install Dependencies:

    cd tc-decoder-backend
npm install

Environment Variables

  • Create a .env file in the project root with the following variables:

    NODE_ENV=production
PORT=3001
DATABASE_URL=postgresql://user:password@dbhost:5432/tcdecoder
JWT_SECRET=your_jwt_secret
OPENAI_API_KEY=your_openai_api_key

  • Security: Ensure the .env file is not committed to version control.

Database Migration

  • Run Migrations:

    npx sequelize-cli db:migrate --env production

  • Seed Database (if necessary):

    npx sequelize-cli db:seed:all --env production

Process Management with PM2

  1. Install PM2 Globally:

    sudo npm install -g pm2

  2. Start the Application:

    pm2 start server.js --name tc-decoder-backend

  3. Configure PM2 to Start on Boot:

    pm2 startup systemd
pm2 save

7. Frontend Deployment

Building the Frontend

  1. Clone the Repository:

    git clone https://github.com/yourcompany/tc-decoder-frontend.git

  2. Install Dependencies:

    cd tc-decoder-frontend
npm install

  3. Build the Application:

    npm run build

Serving Static Files with Nginx

  1. Copy Build Files:

    • Copy the contents of the build directory to /var/www/tc-decoder-frontend.

      sudo mkdir -p /var/www/tc-decoder-frontend
sudo cp -r build/* /var/www/tc-decoder-frontend/

  2. Set Permissions:

    sudo chown -R www-data:www-data /var/www/tc-decoder-frontend

8. Nginx Configuration

Reverse Proxy Setup

  1. Create Nginx Configuration File:

    sudo nano /etc/nginx/sites-available/tc-decoder

  2. Configure Nginx:

    server {
    listen 80;
    server_name tcdecodertool.com www.tcdecodertool.com;

    location /api/ {
        proxy_pass http://localhost:3001/;
        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;
    }

    location / {
        root /var/www/tc-decoder-frontend;
        index index.html index.htm;
        try_files $uri $uri/ /index.html;
    }

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/tcdecodertool.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/tcdecodertool.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}

  3. Enable the Configuration:

    sudo ln -s /etc/nginx/sites-available/tc-decoder /etc/nginx/sites-enabled/

  4. Test Nginx Configuration:

    sudo nginx -t

  5. Reload Nginx:

    sudo systemctl reload nginx

Load Balancing (Optional)

  • If anticipating high traffic, set up Nginx as a load balancer distributing requests across multiple backend servers.

9. CI/CD Pipeline Setup

GitHub Actions Configuration

  1. Create Workflow Files:

    • Place workflow YAML files in .github/workflows/ directory in your repositories.

  2. Example Workflow for Backend (backend.yml):

    name: Backend CI/CD

on:
  push:
    branches: [main]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - name: Set up Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'
      - name: Install dependencies
        run: npm install
      - name: Run tests
        run: npm test
      - name: Deploy to Server
        run: |
          ssh user@server_ip 'cd /path/to/backend && git pull && npm install && pm2 restart tc-decoder-backend'

Automated Testing Integration

  • Ensure that the CI pipeline includes steps to run automated tests before deployment.
  • Configure notifications for build failures.

10. Monitoring and Logging

Application Monitoring

  • Use PM2 Monitoring:

    pm2 monit

  • Integrate with Monitoring Tools:

    • Use services like New Relic, Datadog, or DigitalOcean Monitoring for more comprehensive monitoring.

Log Management

  • Centralize Logs:

    • Configure logs to be stored in a centralized location.
    • Use log management tools like Logrotate to manage log file sizes.

  • Log Streaming:

    • Consider setting up ELK Stack (Elasticsearch, Logstash, Kibana) for advanced log analysis.

Alerting Mechanisms

  • Set up alerts for critical events such as application crashes, high CPU usage, or low disk space.

11. Scaling and High Availability

Horizontal Scaling

  • Application Servers:

    • Add more servers behind a load balancer as needed.

  • Auto-Scaling Groups:

    • Configure auto-scaling based on CPU usage or network traffic.

Database Scaling

  • Read Replicas:

    • Set up read replicas to distribute read operations.

  • Database Clustering:

    • Use clustering solutions for PostgreSQL for high availability.

Caching Strategies

  • Implement Caching:

    • Use Redis or Memcached to cache frequent database queries.

  • CDN Usage:

    • Serve static assets through a Content Delivery Network (CDN) like Cloudflare.

12. Backup and Recovery

Database Backups

  • Automated Backups:

    • Enable automatic backups in DigitalOcean Managed Databases.

  • Manual Backups:

    • Use pg_dump for manual backups.

  • Backup Retention Policy:

    • Define how long backups are retained.

File System Backups

  • Backup Critical Files:

    • Use tools like rsync or backup services to back up configuration files and application data.

13. Security Considerations

Firewall Configuration

  • UFW Firewall:

    sudo ufw allow OpenSSH
sudo ufw allow 'Nginx Full'
sudo ufw enable

  • SSH Security:

    • Change the default SSH port (optional).
    • Disable root login via SSH.

Vulnerability Scanning

  • Regular Scans:

    • Use tools like Nessus or OpenVAS to scan for vulnerabilities.

  • Update Dependencies:

    • Keep system packages and application dependencies up to date.

14. Post-Deployment Testing

Smoke Testing

  • Basic Functionality Tests:

    • Verify that the application is accessible.
    • Test critical features like user registration, login, document upload, and analysis.

Performance Testing

  • Load Testing:

    • Simulate user load using tools like Apache JMeter to ensure the application can handle expected traffic.

15. Maintenance and Updates

Scheduled Downtime

  • Maintenance Windows:

    • Schedule updates during low-traffic periods.
    • Notify users in advance of any planned downtime.

Patch Management

  • System Updates:

    • Regularly apply security patches to the OS and software.

  • Application Updates:

    • Follow the CI/CD process for deploying application updates.

16. Conclusion

This Master Deployment Guide provides a comprehensive roadmap for deploying the T&C Decoder Tool to a production environment. By following the steps outlined, you can ensure a secure, scalable, and high-performing deployment. Regular maintenance, monitoring, and adherence to best practices will help sustain the application's reliability and provide a seamless experience for users.

17. Appendix

Additional Resources

Prepared by: [Your Name], DevOps Engineer
Date: [Current Date]

If you have any questions or need further assistance during the deployment process, please feel free to reach out. Our goal is to ensure a smooth deployment and maintain the highest standards of performance and security for the T&C Decoder Tool.