Current section: ~ Time in enterprise networking since October 2022 Local time in Marbella ES EN

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man homelab

Homelab K3s

Name

homelab — Infrastructure · DevOps · Self-hosting

Synopsis

homelab --status=running --year=2026

A high-availability cluster at home.

PID
04
Status
Running
Year
2026
Role
Design, build & operations

no public link

fig.04 k3s.topology
Topology: Proxmox › load balancer › 3 K3s control-plane nodes › 4 workers › MetalLB, NFS NAS and services.

Description

My lab: Proxmox as hypervisor, a K3s cluster with three control-plane nodes and four workers, MetalLB load balancing, NFS storage on a NAS and self-hosted services with hardware transcoding.

Problem

At work I run networks that can’t go down. At home I wanted to understand everything above them: virtualisation, orchestration, shared storage and how a service behaves when a node disappears.

How it works

  1. HA K3s control plane: 3 masters behind a load balancer.

  2. 4 workers with a MetalLB IP pool to expose services.

  3. An OpenMediaVault NAS exporting NFS volumes to the cluster.

  4. Self-hosted Vaultwarden and Jellyfin; Intel Quick Sync / VA-API transcoding on an N100.

  5. Virtual networks, bridges and segmented subnets on Proxmox.

Architecture

Architecture · Homelab K3s
No. Layer Technology
L0 Hypervisor Proxmox VE · bridge vmbr0
L1 Control plane K3s · 3 masters · LB
L2 Compute K3s · 4 workers
L3 Network MetalLB · segmented subnets
L4 Storage OpenMediaVault · NFS
L5 Services Vaultwarden · Jellyfin

Stack

  • Proxmox
  • K3s
  • Kubernetes
  • MetalLB
  • Docker
  • NFS
  • Linux

Status

Running

Running and constantly evolving. It’s where I test before anything goes to production.

Author

Written by Andrés Felipe Rodríguez Molina <[email protected]>

Design, build & operations.

See also