Resonance

Self-hosted music streaming on Raspberry Pi 4, powered by Navidrome and Kubernetes (k3s).

Architecture

                    ┌─────────────────────────────────────────┐
                    │              Raspberry Pi 4              │
  Internet          │                  k3s                     │
     │              │                                         │
     ▼              │   ┌─────────────────────────────────┐   │
 Cloudflare ────────┼──▶│     namespace: resonance         │   │
  Tunnel            │   │                                  │   │
music.ytchop.com    │   │   ┌──────────┐                   │   │
                    │   │   │Navidrome │◀── /data (SQLite) │   │
                    │   │   │  :4533   │    1TB OS SSD     │   │
                    │   │   │          │                    │   │
                    │   │   │          │◀── /music (read)   │   │
                    │   │   └──────────┘    2TB Music SSD  │   │
                    │   └─────────────────────────────────┘   │
                    └─────────────────────────────────────────┘
                                       ▲
                              Subsonic API (HTTPS)
                                       │
                    ┌──────────────────┼──────────────────┐
                    │                  │                   │
               Substreamer        Feishin            Web UI
              (iOS/Android)      (Desktop)       (Browser)

Tech Stack

Component	Technology
Hardware	Raspberry Pi 4 (8GB RAM), 1TB OS SSD, 2TB Music SSD
OS	Ubuntu 24.04 (arm64)
Orchestration	k3s (lightweight Kubernetes)
Application	Navidrome (music streaming server)
Audio Format	Opus (~128-160kbps via yt-dlp)
Ingress	Cloudflare Tunnel (music.ytchop.com)
Monitoring	Prometheus + Grafana (existing cluster stack)

Storage Layout

Path	Device	Purpose
/mnt/music	2TB SSD (USB)	Music library — mounted read-only to Navidrome
/data/navidrome	1TB OS SSD	Navidrome SQLite DB, cache, transcoding temp

Deployment

Prerequisites

• k3s cluster running on Raspberry Pi
• 2TB SSD mounted at /mnt/music with music organized as:

  /mnt/music/
    Artist Name/
      Album Name (Year)/
        01 - Track Name.opus
        cover.jpg
  

• Cloudflare Tunnel configured

Deploy

kubectl apply -f k8s/namespace.yaml
kubectl apply -f k8s/navidrome.yaml
kubectl apply -f k8s/service.yaml

Verify

kubectl get pods -n resonance
curl http://localhost:30093

On first access, create an admin user via the web UI. Signup is automatically disabled after the first user is created.

Access

Client	URL / Config
Web UI	https://music.ytchop.com
Mobile (Substreamer)	Server: https://music.ytchop.com, Subsonic API
Desktop (Feishin)	Server: https://music.ytchop.com, Subsonic API

Network

• External: Cloudflare Tunnel → music.ytchop.com → NodePort 30093
• Internal: http://192.168.1.64:30093
• USB throughput: ~30 MB/s (USB 2.0 hub) — sufficient for audio streaming