Simon Gardling
3f62b9c88e
Replace three custom Prometheus textfile collector scripts with
dedicated community-maintained exporters:
- jellyfin-collector.nix (25 LoC shell) -> rebelcore/jellyfin_exporter
Metric: jellyfin_active_streams -> count(jellyfin_now_playing_state)
Bonus: per-session labels (user, title, device, codec info)
- qbittorrent-collector.nix (40 LoC shell) -> anriha/qbittorrent-metrics-exporter
Metric: qbittorrent_{download,upload}_bytes_per_second -> qbit_{dl,up}speed
Bonus: per-torrent metrics with category/tag aggregation
- intel-gpu-collector.nix + .py (130 LoC Python) -> mike1808/igpu-exporter
Metric: intel_gpu_engine_busy_percent -> igpu_engines_busy_percent
Bonus: persistent daemon vs oneshot timer, no streaming JSON parser
All three run as persistent daemons scraped by Prometheus, replacing
the textfile-collector pattern of systemd timers writing .prom files.
Dashboard PromQL queries updated to match new metric names.