Prometheus: Configure Prometheus server to scrape data from Node Exporter

This documentation is part of the Retrieving metrics from Linux guide. View the full guide here: How to retrieve Linux server metrics in Prometheus using Node Exporter.

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After installing Node Exporter and securing it, configure your Prometheus server to scrape metrics on a regular schedule.

On Stackhero, select your Prometheus service and go to the "Prometheus configuration" URL. Then add the following to your scrape_configs section:

scrape_configs:

  - job_name: "My servers pool"
    static_configs:
      - targets: [ "<yourLinuxServerDomain>:9100" ]
    basic_auth:
      username: "prometheus"
      password: "<password>"
    scheme: https
    tls_config:
      insecure_skip_verify: true
    # Relabeling "instance" to remove the ":9100" part
    relabel_configs:
      - source_labels: [__address__]
        target_label: instance
        regex: '([^:]+)(:[0-9]+)?'
        replacement: '${1}'

Save the file and check your Prometheus logs to confirm that it has reloaded successfully (you can view the logs from the Stackhero dashboard by selecting your Prometheus service and clicking on the "Logs" tab).

Finally, verify that Prometheus is scraping metrics by accessing the Prometheus UI on the Stackhero dashboard and navigating to Status > Targets. Your Linux server should appear in the target list as UP.

The target "myLinuxServer" is UP