quality_recticel/DOCKER_SOLUTION_SUMMARY.md

Recticel Quality Application - Docker Solution Summary

📦 What Has Been Created

A complete, production-ready Docker deployment solution for your Recticel Quality Application with the following components:

Core Files Created

1. Dockerfile - Multi-stage Flask application container

   • Based on Python 3.10-slim
   • Installs all dependencies from requirements.txt
   • Configures Gunicorn WSGI server
   • Exposes port 8781

2. docker-compose.yml - Complete orchestration configuration

   • MariaDB 11.3 database service
   • Flask web application service
   • Automatic networking between services
   • Health checks for both services
   • Volume persistence for database and logs

3. docker-entrypoint.sh - Smart initialization script

   • Waits for database to be ready
   • Creates database configuration file
   • Runs database schema initialization
   • Seeds superadmin user
   • Starts the application

4. init-db.sql - MariaDB initialization

   • Creates database and user
   • Sets up permissions automatically

5. .env.example - Configuration template

   • Database passwords
   • Port configurations
   • Initialization flags

6. .dockerignore - Build optimization

   • Excludes unnecessary files from Docker image
   • Reduces image size

7. deploy.sh - One-command deployment script

   • Checks prerequisites
   • Creates configuration
   • Builds and starts services
   • Shows deployment status

8. Makefile - Convenient management commands

   • make install - First-time installation
   • make up - Start services
   • make down - Stop services
   • make logs - View logs
   • make shell - Access container
   • make backup-db - Backup database
   • And many more...

9. DOCKER_DEPLOYMENT.md - Complete documentation

   • Quick start guide
   • Management commands
   • Troubleshooting
   • Security considerations
   • Architecture diagrams

Enhanced Files

10. setup_complete_database.py - Updated to support Docker
    • Now reads from environment variables
    • Fallback to config file for non-Docker deployments
    • Maintains backward compatibility

🎯 Key Features

1. Single-Command Deployment

./deploy.sh

This single command will:

• ✅ Build Docker images
• ✅ Create MariaDB database
• ✅ Initialize all database tables and triggers
• ✅ Seed superadmin user
• ✅ Start the application

2. Complete Isolation

• Application runs in its own container
• Database runs in its own container
• No system dependencies needed except Docker
• No Python/MariaDB installation on host required

3. Data Persistence

• Database data persists across restarts (Docker volume)
• Application logs accessible on host
• Configuration preserved

4. Production Ready

• Gunicorn WSGI server (not Flask dev server)
• Health checks for monitoring
• Automatic restart on failure
• Proper logging configuration
• Resource isolation

5. Easy Management

# Start
docker compose up -d

# Stop
docker compose down

# View logs
docker compose logs -f

# Backup database
make backup-db

# Restore database
make restore-db BACKUP=backup_20231215.sql

# Access shell
make shell

# Complete reset
make reset

🚀 Deployment Options

Option 1: Quick Deploy (Recommended for Testing)

cd /srv/quality_recticel
./deploy.sh

Option 2: Using Makefile (Recommended for Management)

cd /srv/quality_recticel
make install    # First time only
make up         # Start services
make logs       # Monitor

Option 3: Using Docker Compose Directly

cd /srv/quality_recticel
cp .env.example .env
docker compose up -d --build

📋 Prerequisites

The deployment requires Docker to be installed on the target system:

Installing Docker on Ubuntu/Debian:

# Update package index
sudo apt-get update

# Install dependencies
sudo apt-get install -y ca-certificates curl gnupg

# Add Docker's official GPG key
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Set up the repository
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# Install Docker Engine
sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# Add current user to docker group (optional, to run without sudo)
sudo usermod -aG docker $USER

After installation, log out and back in for group changes to take effect.

Installing Docker on CentOS/RHEL:

sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
sudo systemctl start docker
sudo systemctl enable docker
sudo usermod -aG docker $USER

🏗️ Architecture

┌──────────────────────────────────────────────────────┐
│              Docker Compose Stack                     │
│                                                       │
│  ┌────────────────────┐      ┌───────────────────┐  │
│  │   MariaDB 11.3     │      │   Flask App       │  │
│  │   Container        │◄─────┤   Container       │  │
│  │                    │      │                   │  │
│  │ - Port: 3306       │      │ - Port: 8781      │  │
│  │ - Volume: DB Data  │      │ - Gunicorn WSGI   │  │
│  │ - Auto Init        │      │ - Python 3.10     │  │
│  │ - Health Checks    │      │ - Health Checks   │  │
│  └──────────┬─────────┘      └─────────┬─────────┘  │
│             │                          │             │
└─────────────┼──────────────────────────┼─────────────┘
              │                          │
              ▼                          ▼
        [mariadb_data]            [logs directory]
        Docker Volume             Host filesystem

🔐 Security Features

1. Database Isolation: Database not exposed to host by default (can be configured)
2. Password Management: All passwords in .env file (not committed to git)
3. User Permissions: Proper MariaDB user with limited privileges
4. Network Isolation: Services communicate on private Docker network
5. Production Mode: Flask runs in production mode with Gunicorn

📊 What Gets Deployed

Database Schema

All tables from setup_complete_database.py:

• scan1_orders - First scan orders
• scanfg_orders - Final goods scan orders
• order_for_labels - Label orders
• warehouse_locations - Warehouse locations
• permissions - Permission system
• role_permissions - Role-based access
• role_hierarchy - Role hierarchy
• permission_audit_log - Audit logging
• Plus SQLAlchemy tables: users, roles

Initial Data

• Superadmin user: superadmin / superadmin123

Application Features

• Complete Flask web application
• Gunicorn WSGI server (4-8 workers depending on CPU)
• Static file serving
• Session management
• Database connection pooling

🔄 Migration from Existing Deployment

If you have an existing non-Docker deployment:

1. Backup Current Data

# Backup database
mysqldump -u trasabilitate -p trasabilitate > backup.sql

# Backup any uploaded files or custom data
cp -r py_app/instance backup_instance/

2. Deploy Docker Solution

cd /srv/quality_recticel
./deploy.sh

3. Restore Data (if needed)

# Restore database
docker compose exec -T db mariadb -u trasabilitate -pInitial01! trasabilitate < backup.sql

4. Stop Old Service

# Stop systemd service
sudo systemctl stop trasabilitate
sudo systemctl disable trasabilitate

🎓 Learning Resources

• Docker Compose docs: https://docs.docker.com/compose/
• Gunicorn configuration: https://docs.gunicorn.org/
• MariaDB Docker: https://hub.docker.com/_/mariadb

✅ Testing Checklist

After deployment, verify:

• Services are running: docker compose ps
• App is accessible: http://localhost:8781
• Can log in with superadmin
• Database contains tables: make shell-db then SHOW TABLES;
• Logs are being written: ls -la logs/
• Can restart services: docker compose restart
• Data persists after restart

🆘 Support Commands

# View all services
docker compose ps

# View logs
docker compose logs -f

# Restart a specific service
docker compose restart web

# Access web container shell
docker compose exec web bash

# Access database
docker compose exec db mariadb -u trasabilitate -p

# Check resource usage
docker stats

# Remove everything and start fresh
docker compose down -v
./deploy.sh

📝 Next Steps

1. Install Docker on the target server (if not already installed)
2. Review and customize .env file after copying from .env.example
3. Run deployment: ./deploy.sh
4. Change default passwords after first login
5. Set up reverse proxy (nginx/traefik) for HTTPS if needed
6. Configure backups using make backup-db
7. Monitor logs regularly with make logs

🎉 Benefits of This Solution

1. Portable: Works on any system with Docker
2. Reproducible: Same deployment every time
3. Isolated: No conflicts with system packages
4. Easy Updates: Just rebuild and restart
5. Scalable: Can easily add more services
6. Professional: Production-ready configuration
7. Documented: Complete documentation included
8. Maintainable: Simple management commands

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Your Flask application is now ready for modern, containerized deployment! 🚀