Organize your Docker container ports by category for clarity and easy management.
| Port Range | Category | Examples / Notes |
|---|---|---|
| 3000–3099 | Development | Web apps, dev servers, testing environments |
| 3100–3199 | Networking | Proxies, VPNs, load balancers |
| 3200–3299 | Monitoring & Logging | Tools like Netdata, Prometheus, ELK stack |
| 3300–3399 | Databases | MySQL, PostgreSQL, MongoDB |
| 3400–3499 | Caching & Queues | Redis, RabbitMQ, Memcached |
| 3500–3599 | CI/CD & Automation | Jenkins, GitLab Runner, Drone |
| 3600–3699 | Messaging & Communication | MQTT brokers, chat servers, email servers |
| 3700–3799 | Media & Streaming | Plex, Jellyfin, streaming services |
| 3800–3899 | Security & Authentication | OAuth servers, LDAP, Vault |
| 3900–3999 | Misc / Custom | Custom apps or less common services |
| Port | Service | Common Use Case |
|---|---|---|
| 80 | HTTP | Web traffic |
| 443 | HTTPS | Secure web traffic |
| 8080 | Alternate HTTP | Dev servers, proxy apps |
| 8443 | Alternate HTTPS | Secure dev servers |
| 9000 | Often used by monitoring | e.g., Netdata, SonarQube |
| 5432 | PostgreSQL default port | Database connections |
| 27017 | MongoDB default port | Database connections |
- Always check if the port is free before assigning to avoid conflicts 🚦
- Use
.envfiles to manage port variables in your Docker Compose setups 🔧 - Document your port assignments especially if you’re in a team 📖
- Keep ports above 3000 for custom apps to avoid clashes with common system services ⚙️
Happy Dockering! 🐳✨