Docker Infrastructure Stack

A production-ready Docker Compose setup with PostgreSQL, Redis, and RabbitMQ.

Services

PostgreSQL

• Version: 16-alpine
• Port: 5432 (configurable)
• Management: psql, pgAdmin, or any PostgreSQL client
• Default Database: maindb
• Health Check: Automatic with pg_isready

Redis

• Version: 7-alpine
• Port: 6379 (configurable)
• Persistence: AOF (Append Only File) enabled
• Management: redis-cli or RedisInsight
• Memory Limit: 256MB (configurable in redis.conf)

RabbitMQ

• Version: 3.13 with Management Plugin
• AMQP Port: 5672 (configurable)
• Management UI Port: 15672 (configurable)
• Management URL: http://localhost:15672
• Default Virtual Host: /

Quick Start

1. Clone and Setup

# Copy environment variables
cp .env.example .env

# Edit .env file with your preferred credentials
nano .env

2. Start Services

# Start all services
docker-compose up -d

# Start specific service
docker-compose up -d postgres
docker-compose up -d redis
docker-compose up -d rabbitmq

# View logs
docker-compose logs -f
docker-compose logs -f postgres

3. Stop Services

# Stop all services
docker-compose down

# Stop and remove volumes (WARNING: This will delete all data)
docker-compose down -v

Connection Details

PostgreSQL

# Command line
psql -h localhost -p 5432 -U admin -d maindb

# Connection string
postgresql://admin:password123@localhost:5432/maindb

Redis

# Command line
redis-cli -h localhost -p 6379 -a redis123

# Connection string
redis://:redis123@localhost:6379

RabbitMQ

# Management UI
http://localhost:15672
Username: admin
Password: rabbit123

# AMQP Connection string
amqp://admin:rabbit123@localhost:5672/

Data Persistence

All data is persisted using Docker volumes:

• postgres_data: PostgreSQL data
• redis_data: Redis persistence files
• rabbitmq_data: RabbitMQ data
• rabbitmq_logs: RabbitMQ logs

Custom Configuration

PostgreSQL Initialization Scripts

Place .sql or .sh files in init-scripts/ directory. They will be executed on first container start.

Redis Configuration

Modify redis.conf for custom Redis settings.

Environment Variables

All configuration is done through environment variables in .env file:

# PostgreSQL
POSTGRES_USER=admin
POSTGRES_PASSWORD=password123
POSTGRES_DB=maindb
POSTGRES_PORT=5432

# Redis
REDIS_PASSWORD=redis123
REDIS_PORT=6379

# RabbitMQ
RABBITMQ_USER=admin
RABBITMQ_PASSWORD=rabbit123
RABBITMQ_VHOST=/
RABBITMQ_PORT=5672
RABBITMQ_MGMT_PORT=15672

Health Checks

All services include health checks for monitoring:

# Check service health
docker-compose ps

# Manual health check
docker exec postgres_db pg_isready -U admin
docker exec redis_cache redis-cli ping
docker exec rabbitmq_broker rabbitmq-diagnostics ping

Backup and Restore

PostgreSQL Backup

# Backup
docker exec postgres_db pg_dump -U admin maindb > backup.sql

# Restore
docker exec -i postgres_db psql -U admin maindb < backup.sql

Redis Backup

# Backup
docker exec redis_cache redis-cli --rdb /data/dump.rdb
docker cp redis_cache:/data/dump.rdb ./redis-backup.rdb

# Restore
docker cp ./redis-backup.rdb redis_cache:/data/dump.rdb
docker-compose restart redis

Monitoring

View Resource Usage

docker stats

View Logs

# All services
docker-compose logs -f

# Specific service
docker-compose logs -f postgres
docker-compose logs -f redis
docker-compose logs -f rabbitmq

Troubleshooting

Container Won't Start

1. Check logs: docker-compose logs [service_name]
2. Verify ports are not in use: lsof -i :5432 (PostgreSQL), lsof -i :6379 (Redis), lsof -i :5672 (RabbitMQ)
3. Ensure Docker daemon is running: docker info

Connection Refused

1. Verify service is running: docker-compose ps
2. Check firewall settings
3. Verify credentials in .env file

Permission Issues

# Fix volume permissions
docker-compose down -v
sudo rm -rf ./data
docker-compose up -d

Security Notes

1. Change default passwords in production
2. Use secrets management for sensitive data
3. Restrict network access in production environments
4. Enable SSL/TLS for external connections
5. Regular backups of critical data

License

MIT