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Cleanup Blupeprint Deployments

Your cluster and deployment names may be different from the code examples shown below. Edit the commands to use the appropriate names for your deployment.

Remove Deployments

# Delete Pod-1 deployment
kubectl delete -f pod-1-deployment.yaml

# Delete Pod-2 deployment
kubectl delete -f pod-2-deployment.yaml

# Verify deletion
kubectl get all -n web-app-1
kubectl get all -n web-app-2

Delete Entire Namespaces (Quick Cleanup)

# This removes everything in the namespace
kubectl delete namespace web-app-1
kubectl delete namespace web-app-2

# Verify deletion
kubectl get namespaces | grep web-app

Delete k3d Cluster

# Delete the entire cluster
k3d cluster delete wosp-cluster

# Verify deletion
k3d cluster list

# Should show no clusters or cluster not found

Clean Up Docker Images

# Remove the application image
docker rmi serial-app-wosp-node:latest

# Optional: Remove Hopr images (they'll need to be pulled again)
docker rmi repo.hoprapi.com/hopr/xtra-wasm-filter:v2.1.0
docker rmi repo.hoprapi.com/hopr/web-retriever:v0.4.0

# View remaining images
docker images | grep -E "serial-app|hopr"

Clean Up Project Files (Optional)

# Remove generated deployment files
rm pod-1-deployment.yaml
rm pod-2-deployment.yaml

# Or remove entire project directory
cd ..
rm -rf hopr-wosp-demo

Conclusion

This demonstration successfully shows:

✅ Hopr WoSP encrypting all inter-pod communication
✅ Separate Kubernetes namespaces for pod isolation
✅ Continuous relay pattern with initiator control
✅ Local k3d cluster deployment for development
✅ Reusable template-based configuration with YTT
✅ Multi-container pod architecture with sidecars
✅ Cross-namespace service communication via FQDN

What You've Learned

  1. Hopr Workload Security Proxy: How to deploy and configure Hopr's privacy-preserving proxy
  2. Kubernetes Patterns: Multi-container pods, sidecars, namespaces, services, ConfigMaps, Secrets
  3. YTT Templating: How to use Carvel YTT for reusable Kubernetes configurations
  4. k3d Development: Local Kubernetes cluster setup and management
  5. Application Design: Relay patterns, initiator/forwarder roles, asynchronous messaging

Next Steps for Learning

  1. Experiment with the relay pattern:

  2. Modify timing intervals

  3. Add custom data fields to batons
  4. Change the message format

  5. Scale the network:

  6. Add a third pod (or more)

  7. Create different relay topologies (linear, circular, star)
  8. Test with multiple simultaneous relays

  9. Monitor Hopr metrics:

  10. Explore xtra-wasm logs in detail

  11. Track encryption key rotation
  12. Measure latency through the proxy

  13. Customize the application:

  14. Adapt the Python app for your use case

  15. Add database persistence
  16. Implement REST APIs for external control

  17. Production deployment:

  18. Adapt these manifests for production Kubernetes

  19. Implement proper secrets management
  20. Add monitoring and alerting
  21. Configure resource limits and auto-scaling

Additional Resources

  • Hopr Documentation: https://docs.hopr.co
  • Hopr GitHub: https://github.com/hoprnet
  • Carvel YTT Documentation: https://carvel.dev/ytt/
  • k3d Documentation: https://k3d.io/
  • Kubernetes Documentation: https://kubernetes.io/docs/
  • aiohttp Documentation: https://docs.aiohttp.org/

Getting Support

  • Hopr Discord: Community support and discussions
  • Hopr Documentation: Technical guides and API references
  • GitHub Issues: Bug reports and feature requests
  • Carvel Slack: YTT templating questions