Jellyfin-Prometheus-Exporter

A prometheus metrics exporter for Jellyfin.

Jellyfin does provide a metrics endpoint of it's own, but it doesn't provide any useful metrics aside from memory usage.

Metrics

This exporter uses the Jellyfin REST API to generate metrics:

• Number of active sessions
  • Device client (Jellyfin Web, etc)
• Number of active streams
  • Media type (Video, Audio, etc)
  • Type (Movie, Episode, etc)
  • Stream type (transcoded, direct play)
  • Codec (hvec, h264)
• Number of items in each library
  • Container
  • Type (Movie, Epioside, etc)
• Number of user accounts
  • Is Admin
  • Authentication provider

Configuration

The exporter is configured using environment variables

Variable	Default	Description
JELLYFIN_URL		The url to reach the Jellyfin deployment, e.g. https://jellyfin.example.com
JELLYFIN_API_KEY		The API token to use when interacting with the Jellyfin API
PORT	2112	The port to host on

Deployment

A docker image for this exporter is provided ghcr.io/randomman552/jellyfin-prometheus-exporter.

An example docker compose is provided below

version: "3"
services:
  jellyfin-exporter:
    image: rghcr.io/randomman552/jellyfin-prometheus-exporter
    restart: unless-stopped
    environment:
      JELLYFIN_URL: https://jellyfin.example.com
      JELLYFIN_API_KEY: V3rySecretK3y
      PORT: 2112
    ports:
      - 2112:2112

You will probably want to set this up with a reverse proxy such as Traefik.