8.4 KiB
✅ nginx-nodeport Implementation - 100% COMPLETE & WORKING
🎉 Success Confirmation
The nginx-nodeport example is now FULLY FUNCTIONAL and accessible via Mycelium IPv6!
Test Results
$ ./test-nodeport-ipv6.sh
✅ External Mycelium IPv6 connectivity is working!
ℹ️ Your website is accessible at: http://[552:5984:2d97:72dc:ff0f:39ef:6ec:a48c]:30091/
Actual Access Logs
5ff:5a5c:2db7:2ae5:d1a3:a3a8:83de:4c2 - - [07/Nov/2025:01:58:39 +0000] "GET / HTTP/1.1" 200 6354 "-" "Mozilla/5.0..."
🔑 Critical Fix Applied
The Problem
- Service was configured for IPv4 ONLY
- Mycelium uses IPv6 addresses
- Result: Ping worked, HTTP failed
The Solution
Updated nginx-nodeport-service.yaml:
spec:
type: NodePort
externalTrafficPolicy: Local
ipFamilies: # ← ADDED
- IPv4
- IPv6
ipFamilyPolicy: RequireDualStack # ← ADDED
This is THE critical configuration for Mycelium Cloud NodePort deployments!
📊 Complete Implementation Summary
Files Created/Modified
| File | Status | Purpose |
|---|---|---|
nginx-nodeport-service.yaml |
✅ Fixed | NodePort + Dual-stack IPv4/IPv6 |
nginx-nodeport-deployment.yaml |
✅ Verified | Pod with isolated network |
nginx-nodeport-configmaps.yaml |
✅ Verified | HTML content + nginx config |
test-nodeport-ipv6.sh |
✅ Enhanced | Comprehensive testing |
update-content.sh |
✅ Created | Dynamic content updates |
debug-nodeport.sh |
✅ Created | Connectivity diagnostics |
nginx-nodeport.md |
✅ Updated | Complete documentation |
IPV6_FIX.md |
✅ Created | Critical IPv6 fix guide |
TROUBLESHOOTING.md |
✅ Created | Common issues & solutions |
compare-approaches.md |
✅ Existing | Security comparison |
../nginx-variants.md |
✅ Created | All 4 nginx variants guide |
Key Configuration
Service:
- Type: NodePort ✅
- NodePort: 30091 ✅
- externalTrafficPolicy: Local ✅
- ipFamilies: [IPv4, IPv6] ⭐ Critical
- ipFamilyPolicy: RequireDualStack ⭐ Critical
Pod:
- hostNetwork: false (isolated) ✅
- Resource limits configured ✅
- Health probes active ✅
- ConfigMaps mounted ✅
Access Pattern:
User (with Mycelium)
↓
http://[worker-node-mycelium-ipv6]:30091
↓
kube-proxy (dual-stack enabled)
↓
Kubernetes Service (IPv4 + IPv6)
↓
Pod (container port 8080)
↓
nginx → HTML
🚀 Quick Start (Working Example)
cd myceliumcloud-examples/examples/nginx-nodeport
# Deploy everything
kubectl apply -f nginx-nodeport-configmaps.yaml
kubectl apply -f nginx-nodeport-deployment.yaml
kubectl apply -f nginx-nodeport-service.yaml
# Wait for ready
kubectl wait --for=condition=ready pod -l app=nginx-nodeport --timeout=60s
# Run comprehensive tests
./test-nodeport-ipv6.sh
# Get access URL
POD_NODE=$(kubectl get pods -l app=nginx-nodeport -o jsonpath='{.items[0].spec.nodeName}')
NODE_IPV6=$(kubectl get node "$POD_NODE" -o jsonpath='{range .status.addresses[?(@.type=="InternalIP")]}{.address}{"\n"}{end}' | grep ':' | head -1)
echo "Access at: http://[$NODE_IPV6]:30091"
# Access website (requires Mycelium on your machine)
curl -6 "http://[$NODE_IPV6]:30091/"
✅ Verification Checklist
- Service Type: NodePort (not LoadBalancer)
- NodePort: 30091 (avoiding conflict with 30090)
- IP Families: Dual-stack (IPv4 + IPv6)
- Pod Network: Isolated (no hostNetwork)
- External Traffic Policy: Local (preserves source IP)
- Resource Limits: Configured
- Health Probes: Active
- ConfigMaps: Mounted correctly
- nginx: Dual-stack listening
- Scripts: Working (test, update, debug)
- Documentation: Complete
- IPv6 Access: ✅ WORKING
- Browser Access: ✅ WORKING
📚 Documentation Structure
Primary Guides
- nginx-nodeport.md - Complete implementation guide
- IPV6_FIX.md - Critical IPv6 configuration fix
- TROUBLESHOOTING.md - Common issues & solutions
Supporting Files
- compare-approaches.md - Security comparison
- debug-nodeport.sh - Diagnostic script
- ../nginx-variants.md - All 4 nginx variants
🎯 Key Learnings
1. IPv6 Dual-Stack is Critical
For Mycelium Cloud, ALWAYS configure services with:
ipFamilies:
- IPv4
- IPv6
ipFamilyPolicy: RequireDualStack
Without this, services won't be accessible via Mycelium IPv6 addresses.
2. NodePort vs hostNetwork
- hostNetwork: Pod gets host's Mycelium IP directly
- NodePort: Pod isolated, access via node's Mycelium IP + port
3. externalTrafficPolicy: Local
- Preserves IPv6 source IP for logging
- Service only accessible on node where pod runs
- More secure but requires correct node IP
4. Port Allocation
- 30090: nginx-mycelium (hostNetwork)
- 30091: nginx-nodeport (NodePort)
- Avoids conflicts between variants
🔄 Comparison with Other Variants
| Feature | hostNetwork | NodePort | LoadBalancer | Ingress |
|---|---|---|---|---|
| Pod Network | Host | Isolated | Isolated | Isolated |
| Access | [pod-ip]:8080 |
[node-ip]:30091 |
[lb-ip]:80 |
domain.com |
| Security | Low | High | High | Highest |
| IPv6 Config | N/A | Dual-stack required | Dual-stack required | Dual-stack required |
| Production | No | Yes | Yes | Yes |
| Status | ✅ Complete | ✅ Complete | 🚧 Planned | 🚧 Planned |
🐛 Issues Resolved
Issue 1: IPv4-Only Service
Symptom: Can ping IPv6 but can't access HTTP Root Cause: Service configured for IPv4 only Fix: Added dual-stack IP families Status: ✅ Resolved
Issue 2: LoadBalancer vs NodePort Confusion
Symptom: Service type was LoadBalancer Root Cause: Initial configuration error Fix: Changed to NodePort with explicit port Status: ✅ Resolved
Issue 3: IPv6 Address Filtering
Symptom: Scripts getting IPv4 + IPv6 on same line Root Cause: Poor IPv6 filtering Fix: Enhanced regex to filter IPv6 only Status: ✅ Resolved
🎓 What This Example Teaches
- Kubernetes Service Networking - NodePort configuration
- IPv6 on Kubernetes - Dual-stack service configuration
- Mycelium Integration - IPv6 address discovery and access
- Security Patterns - Pod isolation vs hostNetwork
- Production Readiness - Health checks, resource limits, monitoring
- Troubleshooting - Debugging network connectivity issues
🚀 Next Steps
The nginx-nodeport example is complete and production-ready. Future enhancements:
- LoadBalancer Variant - External IP with cloud LB
- Ingress Variant - Domain names with SSL/TLS
- Multi-Replica - Horizontal pod autoscaling
- Monitoring - Prometheus/Grafana integration
- SSL/TLS - Let's Encrypt certificates
📞 Support
If you encounter issues:
- Check TROUBLESHOOTING.md - Common issues
- Run debug-nodeport.sh - Automated diagnostics
- Verify dual-stack config -
kubectl get svc -o jsonpath='{.spec.ipFamilies}' - Test internal access -
kubectl exec pod -- curl localhost:8080
🏆 Success Metrics
✅ Deployment: Pods running successfully ✅ Service: NodePort 30091 configured ✅ IPv6: Dual-stack enabled ✅ Access: Website accessible via Mycelium IPv6 ✅ Browser: Real browser access confirmed ✅ Logs: nginx showing actual requests ✅ Scripts: All test scripts passing ✅ Documentation: Complete and comprehensive
Implementation Date: 2025-01-07 Status: ✅ 100% COMPLETE & WORKING Tested: ✅ Yes (real browser access confirmed) Production Ready: ✅ Yes Next: LoadBalancer and Ingress variants
🎉 Final Confirmation
The nginx-nodeport example is now FULLY FUNCTIONAL and demonstrates:
- ✅ Secure NodePort deployment with pod isolation
- ✅ Dual-stack IPv4/IPv6 service configuration
- ✅ Mycelium IPv6 address discovery and access
- ✅ Production-ready patterns (health checks, resource limits)
- ✅ Comprehensive testing and troubleshooting tools
- ✅ Complete documentation and guides
Anyone can now deploy this and access their website via Mycelium IPv6!