# Where to find Mattermost after installing GitLab omnibus?

**URL:** <https://forum.mattermost.com/t/where-to-find-mattermost-after-installing-gitlab-omnibus/175>\
**Category:** Troubleshooting\
**Created:** [September 4, 2015, 1:29am UTC](https://forum.mattermost.com/t/where-to-find-mattermost-after-installing-gitlab-omnibus/175 "2015-09-04T01:29:19Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![aguarino77](https://avatars.discourse-cdn.com/v4/letter/a/b4bc9f/32.png) [@aguarino77](https://forum.mattermost.com/u/aguarino77)\
**Post date:** [September 28, 2015, 3:30pm UTC](https://forum.mattermost.com/t/where-to-find-mattermost-after-installing-gitlab-omnibus/175/5 "2015-09-28T15:30:07Z")

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Sorry for asking a very stupid question: I have modified gitlab.rb to include

external\_url '[http://casgitlab.casalelug.ch](http://casgitlab.casalelug.ch)’  
mattermost[‘enable’] = true  
mattermost\_external\_url ‘[http://192.168.0.213](http://192.168.0.213)’

but I still do not understand how to access mattermost. Which url should I call?

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