The OpenTelemetry Collector provides an integration with the Collector’s host to ingest health metrics. When configured to use the Host metrics integration, the Collector can fetch the following metrics from the configured path in the Host metrics receiver:
|Metric type||Metrics collected/emitted|
|File system||File system metrics|
|Paging (swap)||Paging metrics|
From there the metrics are processed and exported to Cloud Observability.
To complete the integration, you will:
In the Collector configuration file, add Host metrics as a receiver and set the scrapers you wish to collect metrics for. You can add one, all, or a combination of the following:
This example is scraping for both CPU and disk metrics:
1 2 3 4 5 receivers: hostmetrics: scrapers: cpu: disk:
The OpenTelemetry repo readme provides additional details about Host metrics configuration.
Once the Host metrics receiver is configured, enable it by adding it to one or more pipelines as described in the Collector configuration documentation.
You can validate that metrics are reporting to Cloud Observability on the Metrics details page in Project settings.
In Cloud Observability, click Project settings > Metric details.
Search for Linux Host metrics metric names.
See the table at the top of this page for links to the complete list of emitted metrics.
If needed, click on the metric to edit the description and how the units are displayed in Cloud Observability.
Use the Cloud Observability Terraform Provider to create a dashboard for the metrics.
For a more complete example that’s ready to run, see the Host metrics integration in Cloud Observability OpenTelemetry Examples.
Updated Dec 1, 2022