---
title: "prometheus.exporter.kafka | Grafana Alloy documentation"
description: "Learn about prometheus.exporter.kafka"
---

# `prometheus.exporter.kafka`

The `prometheus.exporter.kafka` component embeds the [`kafka_exporter`](https://github.com/grafana/kafka_exporter) for collecting metrics from a Kafka server.

## Usage

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```alloy
prometheus.exporter.kafka "<LABEL>" {
    kafka_uris = "<KAFKA_URI_LIST>"
}
```

## Arguments

You can use the following arguments with `prometheus.exporter.kafka`:

Expand table

| Name                          | Type            | Description                                                                                                                                                                            | Default   | Required |
|-------------------------------|-----------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------|----------|
| `kafka_uris`                  | `array(string)` | Address array (host:port) of Kafka server.                                                                                                                                             |           | yes      |
| `allow_auto_topic_creation`   | `bool`          | If true, the broker may auto-create topics that you requested which don’t already exist.                                                                                               |           | no       |
| `allow_concurrency`           | `bool`          | If set to true, all scrapes trigger Kafka operations. Otherwise, they share results. WARNING: Disable this on large clusters.                                                          | `true`    | no       |
| `ca_file`                     | `string`        | The optional certificate authority file for TLS client authentication.                                                                                                                 |           | no       |
| `cert_file`                   | `string`        | The optional certificate file for TLS client authentication.                                                                                                                           |           | no       |
| `groups_exclude_regex`        | `string`        | Regex that determines which consumer groups to exclude.                                                                                                                                | `"^$"`    | no       |
| `groups_filter_regex`         | `string`        | Regex filter for consumer groups to be monitored.                                                                                                                                      | `".*"`    | no       |
| `gssapi_kerberos_auth_type`   | `string`        | Kerberos auth type. Either `keytabAuth` or `userAuth`.                                                                                                                                 |           | no       |
| `gssapi_kerberos_config_path` | `string`        | Kerberos configuration path.                                                                                                                                                           |           | no       |
| `gssapi_key_tab_path`         | `string`        | Kerberos keytab file path.                                                                                                                                                             |           | no       |
| `gssapi_realm`                | `string`        | Kerberos realm.                                                                                                                                                                        |           | no       |
| `gssapi_service_name`         | `string`        | Service name when using Kerberos Authorization                                                                                                                                         |           | no       |
| `insecure_skip_verify`        | `bool`          | If set to true, the server’s certificate isn’t checked for validity. This makes your HTTPS connections insecure.                                                                       |           | no       |
| `instance`                    | `string`        | The`instance`label for metrics, default is the hostname:port of the first `kafka_uris`. You must manually provide the instance value if there is more than one string in `kafka_uris`. |           | no       |
| `kafka_cluster_name`          | `string`        | Kafka cluster name.                                                                                                                                                                    |           | no       |
| `kafka_version`               | `string`        | Kafka broker version.                                                                                                                                                                  | `"2.0.0"` | no       |
| `key_file`                    | `string`        | The optional key file for TLS client authentication.                                                                                                                                   |           | no       |
| `max_offsets`                 | `int`           | The maximum number of offsets to store in the interpolation table for a partition.                                                                                                     | `1000`    | no       |
| `metadata_refresh_interval`   | `duration`      | Metadata refresh interval.                                                                                                                                                             | `"1m"`    | no       |
| `offset_show_all`             | `bool`          | If true, the broker may auto-create topics that you requested which don’t already exist.                                                                                               | `true`    | no       |
| `prune_interval_seconds`      | `int`           | Deprecated (no-op), use `metadata_refresh_interval` instead.                                                                                                                           | `30`      | no       |
| `sasl_disable_pafx_fast`      | `bool`          | Configure the Kerberos client to not use PA\_FX\_FAST.                                                                                                                                 |           | no       |
| `sasl_mechanism`              | `string`        | The SASL SCRAM SHA algorithm SHA256 or SHA512 as mechanism.                                                                                                                            |           | no       |
| `sasl_password`               | `string`        | SASL user password.                                                                                                                                                                    |           | no       |
| `sasl_username`               | `string`        | SASL user name.                                                                                                                                                                        |           | no       |
| `tls_server_name`             | `string`        | Used to verify the hostname on the returned certificates unless tls.insecure-skip-tls-verify is given. If you don’t provide the Kafka server name, the hostname is taken from the URL. |           | no       |
| `topic_workers`               | `int`           | Minimum number of topics to monitor.                                                                                                                                                   | `100`     | no       |
| `topics_exclude_regex`        | `string`        | Regex that determines which topics to exclude.                                                                                                                                         | `"^$"`    | no       |
| `topics_filter_regex`         | `string`        | Regex filter for topics to be monitored.                                                                                                                                               | `".*"`    | no       |
| `use_sasl_handshake`          | `bool`          | Only set this to false if using a non-Kafka SASL proxy.                                                                                                                                | `true`    | no       |
| `use_sasl`                    | `bool`          | Connect using SASL/PLAIN.                                                                                                                                                              |           | no       |
| `use_tls`                     | `bool`          | Connect using TLS.                                                                                                                                                                     |           | no       |
| `use_zookeeper_lag`           | `bool`          | If set to true, use a group from zookeeper.                                                                                                                                            |           | no       |
| `zookeeper_uris`              | `array(string)` | Address array (hosts) of zookeeper server.                                                                                                                                             |           | no       |

## Blocks

The `prometheus.exporter.kafka` component doesn’t support any blocks. You can configure this component with arguments.

## Exported fields

The following fields are exported and can be referenced by other components.

Expand table

| Name      | Type                | Description                                               |
|-----------|---------------------|-----------------------------------------------------------|
| `targets` | `list(map(string))` | The targets that can be used to collect exporter metrics. |

For example, the `targets` can either be passed to a `discovery.relabel` component to rewrite the targets’ label sets or to a `prometheus.scrape` component that collects the exposed metrics.

The exported targets use the configured [in-memory traffic](../../../../get-started/component_controller/#in-memory-traffic) address specified by the [run command](../../../cli/run/).

## Component health

`prometheus.exporter.kafka` is only reported as unhealthy if given an invalid configuration. In those cases, exported fields retain their last healthy values.

## Debug information

`prometheus.exporter.kafka` doesn’t expose any component-specific debug information.

## Debug metrics

`prometheus.exporter.kafka` doesn’t expose any component-specific debug metrics.

## Example

This example uses a [`prometheus.scrape` component](../prometheus.scrape/) to collect metrics from `prometheus.exporter.kafka`:

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```alloy
prometheus.exporter.kafka "example" {
  kafka_uris = ["localhost:9200"]
}

// Configure a prometheus.scrape component to send metrics to.
prometheus.scrape "demo" {
  targets    = prometheus.exporter.kafka.example.targets
  forward_to = [prometheus.remote_write.demo.receiver]
}

prometheus.remote_write "demo" {
  endpoint {
    url = "<PROMETHEUS_REMOTE_WRITE_URL>"

    basic_auth {
      username = "<USERNAME>"
      password = "<PASSWORD>"
    }
  }
}
```

Replace the following:

- *`<PROMETHEUS_REMOTE_WRITE_URL>`* : The URL of the Prometheus `remote_write` compatible server to send metrics to.
- *`<USERNAME>`* : The username to use for authentication to the `remote_write` API.
- *`<PASSWORD>`* : The password to use for authentication to the `remote_write` API.

## Compatible components

`prometheus.exporter.kafka` has exports that can be consumed by the following components:

- Components that consume [Targets](../../../compatibility/#targets-consumers)

> Note
> 
> Connecting some components may not be sensible or components may require further configuration to make the connection work correctly. Refer to the linked documentation for more details.