docs(gremlin): create radarr

Netgrimoire/Services/radarr/radarr.md

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+# radarr
+
+## Overview
+The Radarr stack is a Docker Swarm service that provides a movie library for managing digital media collections in NetGrimoire. It exposes a web interface for uploading, searching, and organizing movies.
+
+---
+
+## Architecture
+| Service | Image | Port | Role |
+|---------|-------|-----|------|
+- **Host:** docker4
+- **Network:** netgrimoire
+- **Exposed via:** radarr:7878 (Caddy reverse proxy)
+- **Homepage group:** Jolly Roger
+
+---
+
+## Build & Configuration
+
+### Prerequisites
+To deploy Radarr, ensure Docker and Docker Swarm are installed and running on NetGrimoire. The `docker` user must have sufficient privileges to run the deployment script.
+
+### Volume Setup
+```bash
+mkdir -p /DockerVol/Radarr
+```
+
+### Environment Variables
+```bash
+generate: openssl rand -hex 32
+```
+
+### Deploy
+```bash
+cd services/swarm/stack/radarr
+set -a && source .env && set +a
+docker stack config --compose-file radarr-stack.yml > resolved.yml
+docker stack deploy --compose-file resolved.yml radarr
+rm resolved.yml
+docker stack services radarr
+```
+
+### First Run
+After the initial deployment, run `./deploy.sh` to configure Radarr with your preferred settings.
+
+---
+
+## User Guide
+
+### Accessing radarr
+| Service | URL | Purpose |
+- **radarr** | https://radarr.netgrimoire.com | Web interface for uploading and searching movies |
+
+### Primary Use Cases
+Use the Radarr web interface to manage your digital media collections, including adding movies, creating folders, and searching for specific titles.
+
+### NetGrimoire Integrations
+Radarr integrates with other services in NetGrimoire through environment variables and labels. Refer to the service documentation for more information on how to configure these integrations.
+
+---
+
+## Operations
+
+### Monitoring
+```bash
+docker stack services radarr
+docker service logs -f radarr
+```
+
+### Backups
+Critical data is stored at `/DockerVol/Radarr`. Ensure this volume is properly backed up and restored in case of failure.
+
+### Restore
+If the Radarr instance fails, run `./deploy.sh` to restore the configuration from a backup.
+
+---
+
+## Common Failures
+| Symptom | Cause | Fix |
+|---------|-------|-----|
+| Website not accessible | Caddy reverse proxy not running | Check caddy service status and restart if necessary |
+| Data corruption | Inconsistent backups | Regularly back up data to ensure integrity |
+| Configuration errors | Misconfigured environment variables | Review configuration file carefully |
+
+---
+
+## Changelog
+
+| Date | Commit | Summary |
+|------|--------|---------|
+| 2026-05-07 | 3f28369b | Initial documentation for Radarr stack in NetGrimoire |
+| 2026-04-07 | 77c13325 | Added support for Docker Swarm configuration |
+| 2026-02-19 | 7482d3e5 | Improved volume setup for data storage |
+
+---
+
+## Notes
+- Generated by Gremlin on 2026-05-08T03:11:25.975Z
+- Source: swarm/radarr.yaml
+- Review User Guide and Changelog sections