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[OTAGENT-572] Add a warning on potential duplicated Prometheus metrics #33691

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Merged
rtrieu merged 3 commits into from
Jan 6, 2026
Merged

[OTAGENT-572] Add a warning on potential duplicated Prometheus metrics #33691

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[OTAGENT-572] Add a warning on potential duplicated Prometheus metrics
songy23 Jan 6, 2026
74438e9
Fix link
songy23 Jan 6, 2026
c8bc890
Update content/en/opentelemetry/integrations/collector_health_metrics.md
songy23 Jan 6, 2026
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6 changes: 5 additions & 1 deletion content/en/opentelemetry/integrations/collector_health_metrics.md
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Expand Up @@ -31,6 +31,10 @@
- targets: ['0.0.0.0:8888']
```

<div class="alert alert-warning">
If you have a Datadog Agent running on the same host as an OpenTelemetry Collector or DDOT Collector that uses a Prometheus receiver to scrape Collector health metrics, make sure the Agent's <a href="/integrations/openmetrics/">OpenMetrics integration</a> is either turned off or scraping a different endpoint than the Collector health metrics endpoint. Otherwise, both the Agent and Collector scrape the same endpoint, resulting in duplicate Collector health metrics.

Check notice on line 35 in content/en/opentelemetry/integrations/collector_health_metrics.md

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</div>

## Data collected

| OpenTelemetry Metric | Description |
Expand Down Expand Up @@ -130,4 +134,4 @@

[1]: https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/prometheusreceiver
[2]: https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/exporter/datadogexporter/examples/collector-metrics.yaml
[3]: https://pkg.go.dev/runtime#MemStats.Sys
[3]: https://pkg.go.dev/runtime#MemStats.Sys
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