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---
stage: Monitor
group: APM
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/#designated-technical-writers
---
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# Registry exporter
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> [Introduced](https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/2884) in GitLab 11.9.
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The Registry exporter allows you to measure various Registry metrics.
To enable it:
1. [Enable Prometheus ](index.md#configuring-prometheus ).
1. Edit `/etc/gitlab/gitlab.rb` and enable [debug mode ](https://docs.docker.com/registry/#debug ) for the Registry:
```ruby
registry['debug_addr'] = "localhost:5001" # localhost:5001/metrics
```
1. Save the file and [reconfigure GitLab ](../../restart_gitlab.md#omnibus-gitlab-reconfigure )
for the changes to take effect.
Prometheus will now automatically begin collecting performance data from
the registry exporter exposed under `localhost:5001/metrics` .
[← Back to the main Prometheus page ](index.md )
