Add info on changing the default address/port Prometheus listens on
Reported in https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1905 [ci skip]
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@ -46,6 +46,29 @@ By default, Prometheus will run as the `gitlab-prometheus` user and listen on
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has been enabled, it will automatically be set up as a monitoring target for
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has been enabled, it will automatically be set up as a monitoring target for
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Prometheus.
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Prometheus.
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## Changing the port Prometheus listens on
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>**Note:**
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The following change was added in [GitLab Omnibus 8.17][1261]. Although possible,
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it's not recommended to change the default address and port Prometheus listens
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on as this might affect or conflict with other services running on the GitLab
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server. Proceed at your own risk.
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To change the address/port that Prometheus listens on:
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1. Edit `/etc/gitlab/gitlab.rb`
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1. Find and add/uncomment the following line:
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```ruby
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prometheus['listen_address'] = 'localhost:9090'
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```
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Replace `localhost:9090` with the address/port you want Prometheus to
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listen on.
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1. Save the file and [reconfigure GitLab][reconfigure] for the changes to
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take effect
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## Viewing performance metrics
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## Viewing performance metrics
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After you have [enabled Prometheus](#configuring-prometheus), you can visit
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After you have [enabled Prometheus](#configuring-prometheus), you can visit
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@ -121,3 +144,4 @@ The GitLab monitor exporter allows you to measure various GitLab metrics.
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[scrape-config]: https://prometheus.io/docs/operating/configuration/#%3Cscrape_config%3E
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[scrape-config]: https://prometheus.io/docs/operating/configuration/#%3Cscrape_config%3E
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[reconfigure]: ../../restart_gitlab.md#omnibus-gitlab-reconfigure
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[reconfigure]: ../../restart_gitlab.md#omnibus-gitlab-reconfigure
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[#27069]: https://gitlab.com/gitlab-org/gitlab-ce/issues/27069
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[#27069]: https://gitlab.com/gitlab-org/gitlab-ce/issues/27069
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[1261]: https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/1261
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