stack.basicstack.de/infrastructure/README.md
CTO Agent 3b000e1ab1 Document k3s cluster network architecture and DNS requirements
Created comprehensive network documentation for BasicStack k3s cluster:

- NETWORK_ARCHITECTURE.md: Complete network architecture with diagrams,
  node configuration, CNI (Flannel) details, ingress/LoadBalancer setup,
  DNS configuration, TLS certificates, network policies, traffic flows,
  and troubleshooting procedures

- DNS_REQUIREMENTS.md: Complete DNS record requirements for all services
  including A records, MX records, SPF, DKIM, DMARC, and PTR records

- NETWORK_VERIFICATION.md: Verification report documenting current state
  of all network components with findings and recommendations

Updated infrastructure README with links to new network documentation.

Key findings:
- All worker nodes correctly configured with --node-ip set to private IPs
- Flannel VXLAN properly configured with public IP annotations
- Traefik ingress controller operational
- 16/17 TLS certificates valid (registry-tls needs investigation)
- 3 LoadBalancer services properly configured
- Network policies securing database services

Addresses DEV-225: Verify and document k3s cluster network configuration
Related: DEV-224 (node-ip configuration), DEV-223 (DNS issues)

Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-07-11 11:06:36 +00:00

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Markdown

# Infrastructure
This directory contains cluster-wide infrastructure configurations that support all applications.
## Structure
### `networking/`
Network-level configurations including:
- **[Network Architecture](networking/NETWORK_ARCHITECTURE.md)** - Comprehensive network architecture documentation
- **[DNS Requirements](networking/DNS_REQUIREMENTS.md)** - DNS records and configuration guide
- Ingress controller configurations (Traefik)
- Network policies
- Load balancer configurations (k3s ServiceLB)
- Certificate management (cert-manager, TLS)
- Certificate reloading (Stakater Reloader)
### `monitoring/`
Observability infrastructure:
- Prometheus operator and configurations
- Grafana dashboards and datasources
- Logging stack (Loki, Promtail, etc.)
- Alert rules and notification channels
- Service monitors and pod monitors
## Purpose
Infrastructure configurations in this directory are shared across all applications. Changes here can affect the entire cluster, so:
1. Test thoroughly before applying
2. Document all changes
3. Consider the impact on existing deployments
4. Coordinate with other team members
## Adding Infrastructure Components
When adding new infrastructure components:
1. Create appropriate subdirectories if needed
2. Include clear documentation
3. Define dependencies and prerequisites
4. Provide rollback procedures
5. Update this README with the new component