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kubeadm upgrade apply regenerates the apiserver static-pod manifest and drops the --authentication-config flag, silently breaking SSO (kubectl/kubelogin + the k8s dashboard) until someone manually re-applied the rbac stack. That manual step ran after every control-plane upgrade — the one thing keeping autonomous patch upgrades from being truly hands-off (it bit us this cycle: an earlier master bump left SSO broken until we noticed). Automate it: the rbac stack now publishes its existing OIDC restore script (the same one its null_resource runs) to a kube-system/apiserver-oidc-restore ConfigMap, and the upgrade chain's phase_master re-runs it on master right after the kubeadm upgrade — while tigera-operator is still quiesced so the flag-add apiserver restart can't crashloop it. The script is idempotent and health-gates /livez with auto-rollback; the step is non-fatal (a failure only lags SSO until the next rbac apply, it won't abort the upgrade). phase_master already self-skips when master is at target, so this only fires when master was actually upgraded. The chain SA gets a name-scoped get on that one ConfigMap. Runbook updated: the manual restore is now a documented fallback (command corrected — it needs -replace, since the null_resource trigger hash never changes). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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Infrastructure Documentation
This repository contains the configuration and documentation for a homelab Kubernetes cluster running on Proxmox. The infrastructure hosts 70+ services managed declaratively with Terraform and Terragrunt.
Quick Reference
Network Ranges
- Physical Network:
192.168.1.0/24- Physical devices and host network - Management VLAN 10:
10.0.10.0/24- Infrastructure VMs and management - Kubernetes VLAN 20:
10.0.20.0/24- Kubernetes cluster network
Key URLs
- Public:
viktorbarzin.me - Internal:
viktorbarzin.lan
Architecture Documentation
| Document | Description |
|---|---|
| Overview | Infrastructure overview, hardware specs, VM inventory, and service catalog |
| Networking | Network topology, VLANs, routing, and firewall rules |
| VPN | Headscale mesh VPN and Cloudflare Tunnel configuration |
| Storage | Proxmox host NFS, Proxmox CSI (LVM-thin + LUKS2), and persistent volume management |
| Authentication | Authentik SSO, OIDC flows, and service integration |
| Security | CrowdSec IPS, Kyverno policies, and security controls |
| Monitoring | Prometheus, Grafana, Loki, and observability stack |
| Secrets Management | HashiCorp Vault integration and secret rotation |
| CI/CD | Woodpecker CI pipeline and deployment automation |
| Backup & DR | Backup strategy, disaster recovery, and restore procedures |
| Compute | Proxmox VMs, GPU passthrough, K8s resource management, and VPA |
| Databases | PostgreSQL, MySQL, Redis, and database operators |
| Multi-tenancy | Namespace isolation, tier system, and resource quotas |
Operations
- Runbooks - Step-by-step operational procedures
- Plans - Infrastructure change plans and rollout strategies
Getting Started
- Review the Overview for a high-level understanding
- Read the Networking doc to understand connectivity
- Check Compute for resource management patterns
- Explore individual architecture docs based on your area of interest