The OpenTelemetry Collector, when configured with a Prometheus receiver, provides an integration with MinIO to scrape Prometheus metrics. The Collector uses the Prometheus Receiver to fetch metrics from the configured path in the MinIO configuration file. From there, the metrics are processed and exported to Lightstep Observability.

To complete the integration, you will:

  • Configure MinIO to use the Prometheus exporter.
  • Configure the Collector to use the MinIO endpoint as a scrape target for the Prometheus receiver.
  • Enable the integration by adding it to a pipeline.

Prerequisites

You’ve configured the Collector to export metric data to Lightstep Observability.

Configure MinIO reporting

You need to configure MinIO to use the Prometheus exporter.

Export the following environment variable:

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export MINIO_PROMETHEUS_AUTH_TYPE=public

For more details about using MinIO with the Prometheus exporter, see the official MinIO documentation.

Configure the Collector receiver

In the Collector configuration file, configure the Prometheus receiver to use the MinIO Prometheus endpoint as a scrape target.

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receivers:
  prometheus:
    config:
      scrape_configs:
        - job_name: 'minio-job'
          scrape_interval: 5s
          metrics_path: '/minio/v2/metrics/cluster'
          params:
            format: [ 'prometheus' ]
          scheme: 'http'
          tls_config:
            insecure_skip_verify: true
          static_configs:
            # Define list of your servers here
            - targets: [ 'minio:9000' ]

The OpenTelemetry repo’s README provides additional details about Prometheus receiver configuration.

More details about the Prometheus scrape configuration can be found here.

Enable the Collector receiver

Once the MinIO receiver is configured, enable it by adding it to one or more pipelines as described in the Collector configuration documentation.

Validate metrics are reporting to Lightstep

You can validate that the metrics are reporting to Lightstep from the Metric details section of the Project Settings page.

  1. In Lightstep, click Project settings > Metric details.

  2. Search for MinIO metric names. Search for metric

    See the official MinIO docs for a complete list of emitted metrics.

  3. If needed, click on the metric to edit the description and how the units are displayed in Lightstep.

Create a dashboard for the metrics

Use the Lightstep Terraform Provider to create a dashboard for the metrics.

Additional resources

For a more complete example that’s ready to run, see the MinIO integration in Lightstep OpenTelemetry Examples.