Self-hosting Jellyfin: your own media server behind Traefik

Jellyfin 12.0, released September 8, 2026, introduces a major versioning shift and a mandatory one-way database migration. Users upgrading from 10.10.7 or 10.11.x should back up config directories to ensure library and plugin survival. Alternatively, Jellyfin 10.11 can be self-hosted as a free, telemetry-free container behind Traefik using netcup Local Block Storage. This setup provides a private alternative to Netflix and Spotify, streaming metadata-rich collections to various devices via HTTPS without monthly subscription fees.