<a id="cmf-telemetry"></a>

# Configure Usage Telemetry for Confluent Manager for Apache Flink

Starting with version 2.5.0, Confluent Manager for Apache Flink® (CMF) sends anonymous usage telemetry
to Confluent once a day. Confluent uses this information to understand how
Confluent Platform for Apache Flink is used and to guide its future development. Telemetry is on by
default, and you can opt out at any time.

## What is collected

Telemetry describes the size and shape of a CMF deployment, not what runs on
it. It includes:

- Counts of the CMF resources that you manage, such as environments, compute
  pools, applications, and statements.
- The versions of the software that your deployment uses, such as Flink and
  Kubernetes.

The data is anonymous. It is associated only with a randomly generated
identifier for your CMF instance, which is stored in the CMF database.
Telemetry does not include the names, configuration, or contents of your
resources, or the data that your jobs process.

CMF sends telemetry to `https://api.segment.io/`. Segment is a
third-party analytics service that Confluent uses.

## Opt out of telemetry

Telemetry is on by default and is controlled by a Helm value.

| Helm value              | Default   | Description                                                 |
|-------------------------|-----------|-------------------------------------------------------------|
| `cmf.telemetry.enabled` | `true`    | Turns usage telemetry on or off. Set to `false` to opt out. |

Set the `cmf.telemetry.enabled` value to `false` in your Helm values file to opt out:

```yaml
cmf:
  telemetry:
    enabled: false
```

Then pass the values file when you install or upgrade CMF:

```bash
helm upgrade --install cmf confluentinc/confluent-manager-for-apache-flink \
  --values values.yaml
```

Keep this setting in the values file that you use for later upgrades. If you
upgrade without it, telemetry returns to its default value of `true`.

For general installation steps, see [Install Confluent Manager for Apache Flink with Helm](helm.md#install-cmf-helm).

## Related content

- [Install Confluent Manager for Apache Flink with Helm](helm.md#install-cmf-helm)
- [Upgrade Confluent Manager for Apache Flink](upgrade-cmf.md#upgrade-cmf)