---
title: "Arr logs"
url: "https://axoflow.com/docs/axosyslog-core/4.28/chapter-sources/arr/"
last_modified: "2026-09-30T13:22:30+02:00"
---

> For the complete documentation index, see [llms.txt](https://axoflow.com/docs/axosyslog-core/4.28/llms.txt).

# Arr logs

AxoSyslog can collect logs of the [Lidarr, Prowlarr, Radarr, Readarr, Sonarr, and Whisparr](https://github.com/Servarr/Wiki) (often referred to as “\*Arr” or “\*Arrs”) applications.

Use the `*arr()` sources to read various \*arr logs:

- `lidarr()`
- `prowlarr()`
- `radarr()`
- `readarr()`
- `sonarr()`
- `whisparr()`

## Prerequisites

- AxoSyslog version 4.7.0 or later.
- Install the `axosyslog-scl` package on [Debian/Ubuntu](https://axoflow.com/docs/axosyslog-core/4.28/install/debian-ubuntu/index.md). On [RHEL and compatible distributions](https://axoflow.com/docs/axosyslog-core/4.28/install/rhel-fedora-almalinux/index.md), the SCL files are part of the `axosyslog` base package.

  Your configuration must also contain `@include "scl.conf"`, which the default configuration file already does. If the SCL files are missing, AxoSyslog fails to start with an [`unexpected LL_IDENTIFIER` error](https://axoflow.com/docs/axosyslog-core/4.28/chapter-troubleshooting-syslog-ng/unexpected-ll-identifier/index.md).

  ```shell
  @include "scl.conf"
  ```

  The `radarr()` driver is a reusable configuration snippet (SCL). For details on using or writing such configuration snippets, see [Reusing configuration blocks](https://axoflow.com/docs/axosyslog-core/4.28/chapter-configuration-file/large-configs/config-blocks/index.md). You can find its source in [scl/arr/arr.conf](https://github.com/axoflow/axosyslog/blob/main/scl/arr/arr.conf) on GitHub.

## Configuration

Example minimal config:

```shell
source s_radarr {
    radarr(
    dir("/path/to/my/radarr/log/dir")
    );
};
```

The logging module is stored in the `<prefix><module>` name-value pair, for example: `.radarr.module` => `ImportListSyncService`.

You can modify the prefix with the `prefix()` option.

Last modified September 30, 2026: [Misc typo fixes (fcbadb27)](https://github.com/axoflow/axosyslog-core-docs/commit/fcbadb27a21ed89d1f491ff40a614c0a7c8ba659)