gitlab-org--gitlab-foss/doc/administration/monitoring/prometheus/node_exporter.md

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# Node exporter **(FREE SELF)**

The [node exporter](https://github.com/prometheus/node_exporter) enables you to measure
various machine resources such as memory, disk and CPU utilization.

For installations from source you must install and configure it yourself.

To enable the node exporter:

1. [Enable Prometheus](index.md#configuring-prometheus).
1. Edit `/etc/gitlab/gitlab.rb`.
1. Add (or find and uncomment) the following line, making sure it's set to `true`:

   ```ruby
   node_exporter['enable'] = true
   ```

1. Save the file, and [reconfigure GitLab](../../restart_gitlab.md#omnibus-gitlab-reconfigure)
   for the changes to take effect.

Prometheus begins collecting performance data from the node exporter
exposed at `localhost:9100`.