sabnzbd

SABnzbd

Usenet downloader. Takes NZBs from Sonarr/Radarr, downloads, repairs, unpacks.

Web UI: http://<host>:8080

Add Usenet Server — Config > Servers. Provider hostname, port 563 for SSL, username, password. Test the connection.
Set Up Categories — Config > Categories. Create tv and movies; Sonarr/Radarr use these to route downloads. Without them the *arrs lose track of downloads.
Get API Key — Config > General. Needed when adding SABnzbd as a download client.

SSD temp path — SABNZBD_TEMP is mounted at /incomplete with the override file, or /downloads/intermediate without it. Point it at an SSD; in-progress downloads deliberately stay off the media mount so unpacking is fast and the import that follows is a free hardlink.
API auth is the query parameter only — ?apikey=. Unlike the *arrs, SABnzbd rejects the header form.
Host whitelist — if the *arrs can't connect, add the container name under Config > Special > host_whitelist.
Connection counts above your plan's cap produce sustained 502 Too many connections rather than a clean error. Raise them one step at a time and watch the log.
Red "free space" on the temp folder is not a low disk. The UI colours it whenever the remaining queue exceeds free temp space, which is normal during a backfill and self-clears. download_free + fulldisk_autoresume are the real protection.

Core

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