﻿---
title: IIS module
description: The iis module parses access and error logs created by the Internet Information Services (IIS) HTTP server. When you run the module, it performs a few...
url: https://www.elastic.co/elastic/docs-builder/docs/2989/reference/beats/filebeat/filebeat-module-iis
products:
  - Beats
  - Filebeat
applies_to:
  - Elastic Cloud Serverless: Generally available
  - Elastic Stack: Generally available
---

# IIS module
<admonition title="Prefer to use Elastic Agent for this use case?">
  Refer to the [Elastic Integrations documentation](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2989/reference/iis).
  <dropdown title="Learn more">
    Elastic Agent is a single, unified way to add monitoring for logs, metrics, and other types of data to a host. It can also protect hosts from security threats, query data from operating systems, forward data from remote services or hardware, and more. Refer to the documentation for a detailed [comparison of Beats and Elastic Agent](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2989/reference/fleet).
  </dropdown>
</admonition>

The `iis` module parses access and error logs created by the Internet Information Services (IIS) HTTP server.
<important>
  The `iis` module currently supports only the default W3C log format.
</important>

When you run the module, it performs a few tasks under the hood:
- Sets the default paths to the log files (but don’t worry, you can override the defaults)
- Makes sure each multiline log event gets sent as a single event
- Uses an Elasticsearch ingest pipeline to parse and process the log lines, shaping the data into a structure suitable for visualizing in Kibana
- Deploys dashboards for visualizing the log data

<tip>
  Read the [quick start](https://www.elastic.co/elastic/docs-builder/docs/2989/reference/beats/filebeat/filebeat-installation-configuration) to learn how to configure and run modules.
</tip>


## Compatibility

The IIS module was tested with logs from version 7.5 and version 10.

## Configure the module

You can further refine the behavior of the `iis` module by specifying [variable settings](#iis-settings) in the `modules.d/iis.yml` file, or overriding settings at the command line.
You must enable at least one fileset in the module. **Filesets are disabled by default.**
The following example shows how to set paths in the `modules.d/iis.yml` file to override the default paths for IIS access logs and error logs:
```yaml
- module: iis
  access:
    enabled: true
    var.paths: ["C:/inetpub/logs/LogFiles/*/*.log"]
  error:
    enabled: true
    var.paths: ["C:/Windows/System32/LogFiles/HTTPERR/*.log"]
```

To specify the same settings at the command line, you use:
```sh
-M "iis.access.var.paths=[C:/inetpub/logs/LogFiles/*/*.log]" -M "iis.error.var.paths=[C:/Windows/System32/LogFiles/HTTPERR/*.log]"
```


### Variable settings

Each fileset has separate variable settings for configuring the behavior of the module. If you don’t specify variable settings, the `iis` module uses the defaults.
For advanced use cases, you can also override input settings. See [Override input settings](https://www.elastic.co/elastic/docs-builder/docs/2989/reference/beats/filebeat/advanced-settings).
<tip>
  When you specify a setting at the command line, remember to prefix the setting with the module name, for example, `iis.access.var.paths` instead of `access.var.paths`.
</tip>


### `access` log fileset settings

<definitions>
  <definition term="var.paths">
    An array of glob-based paths that specify where to look for the log files. All patterns supported by [Go Glob](https://golang.org/pkg/path/filepath/#Glob) are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: `/path/to/log/*/*.log`. This fetches all `.log` files from the subfolders of `/path/to/log`. It does not fetch log files from the `/path/to/log` folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.
  </definition>
</definitions>


### `error` log fileset settings

<definitions>
  <definition term="var.paths">
    An array of glob-based paths that specify where to look for the log files. All patterns supported by [Go Glob](https://golang.org/pkg/path/filepath/#Glob) are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: `/path/to/log/*/*.log`. This fetches all `.log` files from the subfolders of `/path/to/log`. It does not fetch log files from the `/path/to/log` folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.
  </definition>
</definitions>


## Example dashboard

This module comes with a sample dashboard. For example:
![kibana iis](https://www.elastic.co/elastic/docs-builder/docs/2989/reference/beats/filebeat/images/kibana-iis.png)

## Fields

For a description of each field in the module, see the [exported fields](https://www.elastic.co/elastic/docs-builder/docs/2989/reference/beats/filebeat/exported-fields-iis) section.