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Viktor Barzin 1c300a14cf mailserver: overhaul inbound delivery, monitoring, CrowdSec, and migrate to Brevo relay 
Inbound:
- Direct MX to mail.viktorbarzin.me (ForwardEmail relay attempted and abandoned)
- Dedicated MetalLB IP 10.0.20.202 with ETP: Local for CrowdSec real-IP detection
- Removed Cloudflare Email Routing (can't store-and-forward)
- Fixed dual SPF violation, hardened to -all
- Added MTA-STS, TLSRPT, imported Rspamd DKIM into Terraform
- Removed dead BIND zones from config.tfvars (199 lines)

Outbound:
- Migrated from Mailgun (100/day) to Brevo (300/day free)
- Added Brevo DKIM CNAMEs and verification TXT

Monitoring:
- Probe frequency: 30m → 20m, alert thresholds adjusted to 60m
- Enabled Dovecot exporter scraping (port 9166)
- Added external SMTP monitor on public IP

Documentation:
- New docs/architecture/mailserver.md with full architecture
- New docs/architecture/mailserver-visual.html visualization
- Updated monitoring.md, CLAUDE.md, historical plan docs
2026-04-12 22:24:38 +01:00
..
architecture mailserver: overhaul inbound delivery, monitoring, CrowdSec, and migrate to Brevo relay 2026-04-12 22:24:38 +01:00
plans mailserver: overhaul inbound delivery, monitoring, CrowdSec, and migrate to Brevo relay 2026-04-12 22:24:38 +01:00
runbooks update backup/DR docs and runbooks for 3-2-1 architecture 2026-04-06 15:06:01 +03:00
README.md add architecture documentation for all infrastructure subsystems [ci skip] 2026-03-24 00:55:25 +02:00

README.md

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 TrueNAS NFS, democratic-csi, 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

  1. Review the Overview for a high-level understanding
  2. Read the Networking doc to understand connectivity
  3. Check Compute for resource management patterns
  4. Explore individual architecture docs based on your area of interest