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---
stage: Monitor
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group: Monitor
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# GitLab exporter **(FREE SELF)**
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> Renamed from `GitLab monitor exporter` to `GitLab exporter` in [GitLab 12.3](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/16511).
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The [GitLab exporter ](https://gitlab.com/gitlab-org/gitlab-exporter ) enables you to
measure various GitLab metrics pulled from Redis and the database in Omnibus GitLab
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instances.
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For installations from source you must install and configure it yourself.
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To enable the GitLab exporter in an Omnibus GitLab instance:
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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` :
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```ruby
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gitlab_exporter['enable'] = true
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```
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1. Save the file and [reconfigure GitLab ](../../restart_gitlab.md#omnibus-gitlab-reconfigure )
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for the changes to take effect.
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Prometheus automatically begins collecting performance data from
the GitLab exporter exposed at `localhost:9168` .
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## Use a different Rack server
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> - Introduced in [Omnibus GitLab 13.8](https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/4896).
> - WEBrick is now the default Rack server instead of Puma.
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By default, the GitLab exporter runs on [WEBrick ](https://github.com/ruby/webrick ), a single-threaded Ruby web server.
You can choose a different Rack server that better matches your performance needs.
For instance, in multi-node setups that contain a large number of Prometheus scrapers
but only a few monitoring nodes, you may decide to run a multi-threaded server such as Puma instead.
To change the Rack server to Puma:
1. Edit `/etc/gitlab/gitlab.rb` .
1. Add, or find and uncomment, the following line, and set it to `puma` :
```ruby
gitlab_exporter['server_name'] = 'puma'
```
1. Save the file and [reconfigure GitLab ](../../restart_gitlab.md#omnibus-gitlab-reconfigure )
for the changes to take effect.
The supported Rack servers are `webrick` and `puma` .
