Radio K8S

Run an Internet radio station on Kubernetes using Spotify, Mopidy/Iris and Icecast.

When we all moved to working from home, we missed our office Sonos system, which allowed anyone to inflict their music taste on the whole office. Initially I recreated the experience using a Raspberry Pi (and Raspbian), Mopidy/Iris and Icecast. However this was fiddly to set up and maintain. This is the second incarnation using Kubernetes, so anyone can set something similar up for their friends on colleagues.

This is never going to be "production grade", and is intended as a bit of fun only!

You will need

• A Spotify Premium Account
• Kubernetes with an Ingress Controller e.g. Traefik
  • Tested on Kubernetes 1.16 but it should work with any fairly recent version
  • The resources required are tiny; my cluster is a Civo Cloud k3s cluster on a single node with 1 core and 2GB RAM. However no Raspberry Pi support yet, sorry! (see To-Do)

How to install

• Fill in your Spotify account details in mopidy-configmap.yaml
• Fill in your domain name in ingress.yaml
• Optional: Edit mopidy-configmap.yaml and icecast-configmap.yaml to change the hackme password used by Icecast to something a little more secure. Although only the /listen path of Icecast is exposed to the Internet via the Ingress so this isn't a huge security risk really...
• Run kubectl apply -f .

HTTPS and Password Protection

I am using Traefik as my Ingress Controller, installed using the stable/traefik Helm Chart. Conveniently this supports basic authentication and HTTPS using Let's Encrypt with a bit of config. You should follow the documention for that project but I've committed an example Helm values file and Ingress configuration which should help to get you up and running.

ARM64 Architecture support

The Docker images used only support the amd64 architecture. I've built some arm64 images you can use instead if you want to run on a Raspberry Pi (DockerFiles here):

• cablespaghetti/icecast:2.4.4-1-alpine
• cablespaghetti/iris:3.47.0-1

To-Do

• Stop storing passwords in ConfigMaps.
• Harass the Docker image maintainers into providing tags other than latest.
• Maybe make this a Helm chart for easier configuration.
• Stream silence when music is paused/stopped rather than having no stream.
• Fix resume when track is paused. Currently you must restart the track.