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# Node exporter
>**Note:**
Available since Omnibus GitLab 8.16. For installations from source you'll
have to install and configure it yourself.
The [node exporter] allows you to measure various machine resources such as
memory, disk and CPU utilization.
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][reconfigure] for the changes to
take effect
Prometheus will now automatically begin collecting performance data from
the node exporter exposed under `localhost:9100`.
[← Back to the main Prometheus page](index.md)
[node exporter]: https://github.com/prometheus/node_exporter
[prometheus]: https://prometheus.io
[reconfigure]: ../../restart_gitlab.md#omnibus-gitlab-reconfigure
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