Prowlarr (Core Service)#

Prowlarr is an indexer manager for the Arr ecosystem. It centralizes indexer configuration and syncs them to Sonarr, Radarr, Lidarr, and Whisparr.

🔗 Service Relationships#

Classification	Role
Core Service	Indexer manager
Depends On	None
Optional	Sonarr, Radarr, Lidarr, Whisparr
Exposes UI	Yes (Web UI)

📦 Configuration in `dumb_config.json`#

"prowlarr": {
  "instances": {
    "Default": {
      "enabled": false,
      "process_name": "Prowlarr",
      "suppress_logging": false,
      "auto_update": false,
      "auto_update_interval": 24,
      "pinned_version": "",
      "port": 9696,
      "config_dir": "/prowlarr/default",
      "config_file": "/prowlarr/default/config.xml",
      "log_file": "/prowlarr/default/logs/prowlarr.txt",
      "command": [],
      "env": {}
    }
  }
}

🔍 Key Configuration Fields#

port: Web UI port (default 9696).
pinned_version: Optional version pin for Prowlarr updates.
config_dir, config_file, log_file: Paths for config and logs.

⚙️ Integration with DUMB#

Connect Prowlarr to Sonarr/Radarr/Lidarr/Whisparr via their API keys and base URLs.
Prowlarr can share indexers across all Arr instances to keep setups consistent.

🔄 Automated Arr Sync#

DUMB can auto-configure Prowlarr applications for enabled Arr instances. It reads each Arr API key from the Arr config_file, waits for the services to come up, and creates the matching Prowlarr app entries (full sync).

Requirements:

Prowlarr instance is enabled
Arr instances are enabled with a valid port and readable config_file
Prowlarr API key is available in its config_file

🌐 Accessing the UI#

Navigate to: http://<host>:9696