PHP-FPM metrics

The OpenTelemetry Collector, when configured with a Prometheus receiver, provides an integration with PHP-FPM to scrape Prometheus metrics. The Collector uses the Prometheus Receiver to fetch metrics from the PHP-FPM Exporter endpoint. From there, the metrics are processed and exported to Cloud Observability.

To complete the integration, perform the following steps:

  • Configure the PHP-FPM Exporter to enable metrics
  • Configure the Collector to use the PHP-FPM Prometheus plugin endpoint as a scrape target for the Prometheus receiver
  • Enable the integration by adding it to a pipeline

Prerequisites

  • PHP-FPM running in a Kubernetes environment.
  • You’ve configured the Collector to export metric data to Cloud Observability.

Configure PHP-FPM reporting

PHP-FPM requires use of PHP-FPM Exporter for exposing metrics in Prometheus format. See the PHP-FPM example for an integration.

Configure the Collector receiver

In the Collector configuration file, specify the PHP-FPM Prometheus plugin endpoint as a scrape target.

1
2
3
4
5
6
7

receivers:
  prometheus:
    config:
      scrape_configs:
        - job_name: otel-php-fpm
          static_configs:
            - targets: [php-fpm-exporter:9253]

The OpenTelemetry repository readme provides additional details about Prometheus receiver configuration.

Complete information about the Prometheus scrape configuration can be found in the Prometheus documentation.

Enable the Collector receiver

After the PHP-FPM 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 Cloud Observability

You can validate that metrics are reporting to Cloud Observability on the Metrics details page in Settings.

  1. In Cloud Observability, click Settings > Metric details.

  2. Search for PHP-FPM metric names. Arrow points to the metrics search box.

    See the PHP-FPM Exporter documentation for a detailed description of provided metrics.

  3. If needed, select the metric to edit the description and how the units are displayed in Cloud Observability.

Create a dashboard for the metrics

Use the Cloud Observability Terraform Provider to create a dashboard for the metrics.

Additional resources

  • For a complete example that’s ready to run, see the PHP-FPM integration in Cloud Observability OpenTelemetry Examples.

See also

Create and manage dashboards

Create alerts

Updated Dec 1, 2022