2f1f9107f8
The 2026-04-22 Vault outage caught kubelet in a 2-minute chown loop that never exited because the default fsGroupChangePolicy (Always) walks every file on the NFS-backed data PVC. With retrans=3,timeo=30 NFS options and a 1GB audit log, the recursive chown outlasted the deadline and restarted forever — blocking raft quorum recovery. OnRootMismatch makes chown a no-op when the volume root is already correct, which it always is after initial setup. The breakglass fix was applied live via kubectl patch at 10:54 UTC; this commit persists it in Terraform so the next apply doesn't revert. The post-mortem also documents the upstream raft stuck-leader pattern, NFS kernel client corruption after force-kill, and the path to migrate Vault off NFS to proxmox-lvm-encrypted. |
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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