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[DOCS-10142] Clarify OTLP exporter configuration in application #36277

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[DOCS-10142] Clarify OTLP exporter configuration in application #36277

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16 changes: 16 additions & 0 deletions content/en/opentelemetry/setup/otlp_ingest_in_the_agent.md
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Expand Up @@ -321,7 +321,23 @@ There are many other environment variables and settings supported in the Datadog

## Sending OpenTelemetry traces, metrics, and logs to Datadog Agent

After enabling OTLP ingestion on the Datadog Agent, configure your OpenTelemetry-instrumented application to export telemetry data to the Agent's OTLP endpoint. Set the `OTEL_EXPORTER_OTLP_ENDPOINT` environment variable in your **application** environment to direct data to the Agent. Without this configuration, your application does not send telemetry data to the Agent, even if the Agent's OTLP receiver is enabled.

{{< tabs >}}
{{% tab "Host" %}}
Set the `OTEL_EXPORTER_OTLP_ENDPOINT` environment variable in your application's environment:

For gRPC:
```shell
export OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4317"
```

For HTTP:
```shell
export OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4318"
```
{{% /tab %}}

{{% tab "Docker" %}}
1. For the application container, set `OTEL_EXPORTER_OTLP_ENDPOINT` environment variable to point to the Datadog Agent container. For example:

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