# Configuration

> Environment variables and flags of the geolith-search binary.

Every setting is an environment variable and also a command-line flag.

| Variable | Flag | Default | Meaning |
| --- | --- | --- | --- |
| `GLX_FILE` | `--glx` | required | Path to the `.glx` file to serve. |
| `LISTEN` | `--listen` | `127.0.0.1:4000` | Address and port to listen on. |
| `REVERSE_RADIUS_KM` | `--reverse-radius-km` | `1` | Default reverse radius in kilometres, greater than 0 and at most 100. |
| `RUST_LOG` | none | `geolith_search=info,tower_http=info` | Log filter. |

There is no database URL, pool size, statement timeout or warm-up.