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Kubernetes Nerdz

My Home Operations Repository :octocat:

... managed with Flux, Renovate, Swearing and GitHub Actions 🤖

Discord   Kubernetes   Renovate

Home-Internet   Status-Page   Alertmanager

Age-Days   Uptime-Days   Node-Count   Pod-Count   CPU-Usage   Memory-Usage   Power-Usage

📖 Overview

This is a mono repository for my home infrastructure and Kubernetes cluster. I try to adhere to Infrastructure as Code (IaC) and GitOps practices using tools like Kubernetes, TalosCTL, k9s, Flux, Renovate, and GitHub Actions.

⛵ Kubernetes

If you want to try and follow along with how I built my cluster and with some of the practices I use please check out the amazing template here:

Flux Cluster Template Flux Cluster Template Stars

Core Components

  • actions-runner-controller: Self-hosted Github runners.
  • cert-manager: Creates SSL certificates for services in my cluster.
  • cilium: Internal Kubernetes container networking interface.
  • cloudflared: Enables Cloudflare secure access to certain ingresses.
  • external-dns: Automatically syncs ingress DNS records to a DNS provider.
  • external-secrets: Managed Kubernetes secrets using 1Password Connect.
  • ingress-nginx: Kubernetes ingress controller using NGINX as a reverse proxy and load balancer.
  • rook: Distributed block storage for peristent storage.
  • sops: Managed secrets for Kubernetes and Terraform which are commited to Git.
  • volsync: Backup and recovery of persistent volume claims.

Installation

My cluster is Talos provisioned baremetal on Minisform MS-01 12900H's utilizing Thunderbolt Ring Networking for Rook Ceph

GitOps

Flux watches the cluster in my kubernetes folder (see Directories below) and makes the changes to my clusters based on the state of my Git repository.

The way Flux works for me here is it will recursively search the kubernetes/${cluster}/apps folder until it finds the most top level kustomization.yaml per directory and then apply all the resources listed in it. That aforementioned kustomization.yaml will generally only have a namespace resource and one or many Flux kustomizations (ks.yaml). Under the control of those Flux kustomizations there will be a HelmRelease or other resources related to the application which will be applied.

Renovate watches my entire repository looking for dependency updates, when they are found a PR is automatically created. When some PRs are merged Flux applies the changes to my cluster.

Directories

This Git repository contains the following directories under Kubernetes.

📁 kubernetes
├── 📁 main            # main cluster
│   ├── 📁 apps           # applications
│   ├── 📁 bootstrap      # bootstrap procedures
│   ├── 📁 flux           # core flux configuration
│   └── 📁 templates      # re-useable components

Infrastructure

This is a high level diagram of how my kubernetes infrastructure is setup

Hardware

Device Count OS Disk Size Ram Operating System Purpose
Dell Poweredge R730 1 2x 2TB Raid1 ZFS 128GB Proxmox Virtualization Host
Minisform MS-01 3 1x 1TB M.2 + 1x1.98TB U.2 96GB TalosIS Kubernetes Nodes
Unifi Dream Machine Pro 1 - - - Router / FW DHCP Main Lan
Unifi US 24 250w PoE 1 - - - PoE for APs etc (1Gbe)
Unifi US 48 G1 1 - - - Primary Switch (1Gbe)
Unifi U6 Lite 3 - - - Wirless Access Points (PoE)
Eaton 5s 850 (510w) 1 - - - UPS for Servers
PiKVM 4 Plus 1 - - - IP KVM Interface
Ezcoo EZ-SW41HA-KVMU3P 1 - - - KVM Switch
Woieyeks HDMI Adapter 4 - - - 4K HDMI EDID Emulator Passthrough Adapter

Virtual Machines

Device Count OS Disk Size Data Disk Size CPU RAM Operating System Purpose
Stormwind 1 40GB - 02c 02GB Windows Server 2022 DNS / DHCP
Citadel 1 32GB 2x 1.98TB U.2 SLOG, 1x 1.98TB U.2 Cache, 3x 22TB Disks ZFS X1 04c 02GB Windows Server 2022 TrueNas Scale
rclone-proxmox 1 08GB - 01c 01GB Ubuntu (lxc) Sync Proxmox backups to Backblaze B2

🤝 Gratitude and Thanks

Thanks to all the people who donate their time in the Home Operations and TechnoTim Discord Communities for all of their support. Special Shout out to my friend and colleague Kevin Durbin


📜 Changelog

See my awful commit history


🔏 License

See LICENSE