# Postgres exporter>**Note:**Available since [Omnibus GitLab 8.17][1131]. For installations from sourceyou'll have to install and configure it yourself.The [postgres exporter] allows you to measure various PostgreSQL metrics.To enable the postgres 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
```1. Save the file and [reconfigure GitLab][reconfigure] for the changes to take effectPrometheus will now automatically begin collecting performance data fromthe postgres exporter exposed under `localhost:9187`.[← Back to the main Prometheus page](index.md)[1131]:https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1131[postgres exporter]:https://github.com/wrouesnel/postgres_exporter[prometheus]:https://prometheus.io[reconfigure]:../../restart_gitlab.md#omnibus-gitlab-reconfigure