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Art by @SkeletalGadget

Homelab

IaC for my homelab and personal cloud

[ dotfiles Β· charts Β· containers Β· blog ]

πŸ“– Overview

This repository declares all of my infrastructure and Kubernetes clusters, both self-hosted and in Hetzner Cloud. I also host all of my documentation here.

Admittedly, both usages of "all" describe the end goal of this repo, not the current state. But, I will get there some day.


🎨 Components

Infrastructure management

  • Terraform: Bootstraps and manages infrastructure needed for Kubernetes.
  • Crossplane: Kubernetes-native infrastructure management.

Cluster management

  • Talos: Immutable Kubernetes OS; built using talhelper.
  • Argo CD: Reconciles kubernetes clusters with this repository.
  • Kyverno: Policy engine supporting validate, mutate, generate, and cleanup rules.
  • Harbor: Artifact registry with pull-through cache and vulnerability scanning.
  • Jsonnet: Configuration language I use to describe Argo applications.
  • Renovate: Automatic updates for applications via pull requests.

Secrets

  • Doppler: Hosted secrets management platform.
  • External Secrets: Synchronizes secrets from Doppler into Kubernetes.

Networking

Security

  • Authentik: Identity Provider.
  • Tetragon: eBPF-based security observability and runtime enforcement.
  • SecureCodeBox: Continuous and automated security testing with familiar tools like Nmap, ZAP.
  • Trivy: Kubernetes and container vulnerability scanner.

Observability

  • Prometheus: Monitoring system & TSDB.
  • Jaeger: Distributed tracing system.
  • Loki: Log aggregation system.
  • Vector: Log collector, transformer, and router.
  • OTEL Collector: Trace/metric collector, transformer, and router.
  • Grafana: Visualization platform.
  • Robusta: Alerts / notifications and runbook automation.
  • Inspektor Gadget: eBPF-based gadgets to debug and inspect Kubernetes apps and resources.

Storage

  • Rook: Storage operator for Ceph.
  • Ceph: Distributed object, block, and file storage.

πŸ“‚ Repository structure

Overview of this repo's structure, there's more info in the README files for each:

πŸ“ applications  # Kubernetes applications
β”œβ”€πŸ“ base          # Application base config
β”œβ”€πŸ“ environments  # Application cluster customizations
β”‚ β”œβ”€πŸ“ hcloud        # Customizations for Hetzner cluster
β”‚ β”œβ”€πŸ“ home          # Customizations for home cluster
β”‚ β””β”€πŸ“ seedbox       # Customizations for seedbox cluster
β””β”€πŸ“ lib           # Jsonnet libraries

πŸ“ terraform     # IaC defined via Terraform
β”œβ”€πŸ“ home          # IaC for home
β”œβ”€πŸ“ hcloud        # IaC for Hetzner Cloud
β””β”€πŸ“ hcloud-robot  # IaC for Hetzner Cloud (Robot)

☁️ Cloud Dependencies

Although the majority of my infrastructure and workloads are self-hosted, there are certain key components of my setup that rely on cloud services.

Service Use Cost
Hetzner Cloud Cloud compute and storage ~$40/mo
AWS Cloud cold storage (S3 Deep Glacier) ~$10/mo
Google Cloud Cloud storage ~$20/mo
Cloudflare DNS, Certs, Proxy, WAF Free
Doppler Secrets with External Secrets Free
GitHub Hosting this repository and continuous integration/deployments Free
Renovate Automatic updates for applications via pull requests Free
Docker Hub Docker image registry Free
Robusta Alerts / notifications and runbook automation Free
Terraform Cloud Storing Terraform state Free
Grafana Cloud Hosted Grafana & Prometheus, used for misc public projects Free
Total: ~$70/mo

πŸ”§ Hardware

Computing

Count Device OS Disk Size Data Disk Size Ram Operating System Purpose
3 Turing Pi 2 1GB NAND 32GB SD Card 128MB TPi BMC Firmware 4-Node Cluster Board
3 Raspberry Pi CM4 32GB eMMC N/A 8GB Talos Linux Kubernetes Control Plane
3 Supermicro M11SDV-8C+-LN4F 64GB SATADOM 4TB SSD 128GB Talos Linux Kubernetes Workers (x86)
3 Turing RK1 * 32GB eMMC 1TB SSD 32GB Talos Linux Kubernetes Workers (arm64)
1 TrueNAS Mini R 500GB SSD 200TB HDD + 2TB SSD 64GB TrueNAS SCALE Storage Server
1 Raspberry Pi 4B 32GB SD Card N/A 4GB PiKVM Network KVM

* == Pending

Networking

Count Device Eth Interfaces SFP Interfaces Platform Purpose
1 Ubiquiti UDM-SE 1x 2.5G 2x 10G UniFi OS Router & Security Gateway
1 Ubiquiti UCI 1x 2.5G N/A UniFi OS DOCSIS 3.1 Cable Modem
1 Ubiquiti U6-Pro 1x 1G N/A UniFi OS WiFi 6 Access Point
1 Ubiquiti USW-Pro-Aggregation N/A 28x 10G UniFi OS L3 Aggregation Switch
1 Ubiquiti USW-Pro-24 24x 1G 2x 10G UniFi OS L3 Switch
1 Ubiquiti USW-Pro-24-POE 24x 1G 2x 10G UniFi OS L3 PoE Switch
2 WattBox WB-800-IPVM 1x 1G N/A OvrC IP Controlled Metered PDU
1 WattBox WB-800VPS-IPVM-18 1x 1G N/A OvrC IP Controlled Metered PDU

🀝 Thanks

Over time I've taken a ton of inspiration from the K8s@Home / home-ops community: onedr0p, szinn, budimanjojo, buroa, coolguy1771, and many others.

Technically however, I hope this repo is quite unique. I've intentionally tried to make some uncommon choices to learn more and venture outside my comfort zone a bit. So, I hope that in the very least, this repo will provide anyone looking with some interesting and unique ideas. πŸ™‚


πŸ” License

This project is licensed under the Apache-2.0 license, primarily because it's very compatible with a lot of the projects I enjoy stealing code from.

For more details, see LICENSE.

Ultimately though, I have a WTFPL mindset about any content produced by/for myself. If you like anything you see here, feel free to use it however you want (yes, that includes the peepos), just don't sue me if my code blows up your cluster. If you're feeling especially nice, links back to this repo are always appreciated (for the SEO, or whatever).