- infrastructure/OS_UPDATE_PROCEDURE.md: agent-facing rolling update
procedure (drain -> apt -> reboot -> verify -> uncordon -> health ->
next). Explicit MUST NOT list around k3s config, PVs, and manifests.
- infrastructure/OS_UPDATE_ROUTINE.md: describes the weekly Paperclip
routine (Sun 03:00 Europe/Berlin) that fires this procedure.
- infrastructure/scripts/os-update/: cluster-health.sh, update-node.sh,
os-update.sh, README. Enforces the same guardrails in code:
workers-first-then-CP, one node at a time, no --force drains, halts on
reboot/kubelet/health failure, never touches k3s config.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
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>