# MariaDB (RomM Backend)

MariaDB 11 provides the database backend for RomM on Dankserver. RomM 5.2.0 requires MariaDB (or PostgreSQL) for its data store.

**Host:** Dankserver — **Docs:** https://mariadb.com/kb/en/docker-mariadb-information/

## Facts

| Item | Value |
|------|-------|
| Image | `docker.io/mariadb:11` |
| Port | 3306 (internal, within `appnet`) |
| Database name | `romm` |
| Data volume | `/opt/romm/mariadb` |

## Docker Compose

```yaml
mariadb:
  image: docker.io/mariadb:11
  container_name: romm-mariadb
  restart: unless-stopped
  environment:
    MARIADB_ROOT_PASSWORD: "${MARIADB_ROOT_PASSWORD}"
    MARIADB_DATABASE: romm
    MARIADB_USER: "${ROMM_DB_USER}"
    MARIADB_PASSWORD: "${ROMM_DB_PASSWD}"
  volumes:
    - /opt/romm/mariadb:/var/lib/mysql
  healthcheck:
    test: ["CMD", "mariadb-admin", "ping", "-h", "localhost"]
    interval: 10s
    timeout: 5s
    retries: 3
```

## Backup

Back up the volume directory periodically:

```bash
sudo rsync -a /opt/romm/mariadb /mnt/backup/romm-mariadb/
```

## See Also

- [[RomM]] — service that uses this database