Kubernetes vs Docker: When to Use What
Understanding the differences between container runtimes and orchestration platforms to make the right choice for your project.
The Great Debate
One of the most common questions we get at Dockup is: "Should I use Docker or Kubernetes?" The answer, as with most things in tech, is: it depends.
Docker: The Container Runtime
Docker is a containerization platform that packages your application and its dependencies into a standardized unit called a container.
When to Use Docker Alone
- Small projects: Single-service applications
- Development environments: Local testing and development
- Simple deployments: When you don't need auto-scaling or complex orchestration
Kubernetes: The Orchestrator
Kubernetes (K8s) is a container orchestration platform that manages multiple containers across multiple hosts.
When to Use Kubernetes
- Microservices architecture: Multiple services that need to communicate
- High availability requirements: Auto-healing and redundancy
- Complex scaling needs: Horizontal pod autoscaling
- Multi-cloud deployments: Consistent experience across providers
Dockup's Approach
At Dockup, we offer both:
# Simple Docker deployment
dockup deploy --runtime docker
# Full Kubernetes deployment
dockup deploy --runtime kubernetes
Managed Containers (Docker)
Perfect for:
- Web applications
- APIs
- Background workers
Kubernetes Engine
Perfect for:
- Complex microservices
- Stateful applications
- Custom networking requirements
Making the Right Choice
| Factor | Docker | Kubernetes |
|---|---|---|
| Complexity | Low | High |
| Learning Curve | Gentle | Steep |
| Scaling | Manual | Automatic |
| Cost | Lower | Higher |
Conclusion
Start with Docker for simplicity. Graduate to Kubernetes when your scaling and reliability needs demand it. Dockup makes both options equally accessible.