Please review the Collector's security documentation, which contains recommendations on securing sensitive information such as the API key required by this exporter.

Visit the official documentation for usage instructions.

This error indicates the payload size sent by the Datadog exporter exceeds the size limit (see previous examples open-telemetry#16834, open-telemetry#17566).

This is usually caused by the pipeline batching too many telemetry data before sending to the Datadog exporter. To fix that, try lowering send_batch_size and send_batch_max_size in your batchprocessor config. You might want to have a separate batch processor dedicated for datadog exporter if other exporters expect a larger batch size, e.g.

processors:
  batch:  # To be used by other exporters
    timeout: 1s
    # Default value for send_batch_size is 8192
  batch/datadog:
    send_batch_max_size: 100
    send_batch_size: 10
    timeout: 10s
...
service:
  pipelines:
    metrics:
      receivers: ...
      processors: [batch/datadog]
      exporters: [datadog]

The exact values for send_batch_size and send_batch_max_size depends on your specific workload. Also note that, Datadog intake has different payload size limits for the 3 signal types:

• Trace intake: 3.2MB
• Log intake: https://docs.datadoghq.com/api/latest/logs/
• Metrics V2 intake: https://docs.datadoghq.com/api/latest/metrics/#submit-metrics