# Can't run the launcher to install Discourse on CentOS 7

**URL:** <https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095>\
**Category:** Self-hosting\
**Created:** [Décembre 12, 2014, 7:45 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095 "2014-12-12T19:45:49Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![IceCubeCat](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/icecubecat/32/37083_2.png) [@IceCubeCat](https://meta.discourse.org/u/IceCubeCat)\
**Post date:** [Décembre 12, 2014, 7:45 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/1 "2014-12-12T19:45:49Z")

</div>

I followed this guide. (I’m on CentOS 7.): [http://www.howtoinstalldiscourse.com/how-to-install-discourse-on-centos/](http://www.howtoinstalldiscourse.com/how-to-install-discourse-on-centos/)  
When I try and run the command  
_/var/docker/launcher start app_  
I get this error:

```
which: no docker.io in (/sbin:/bin:/usr/sbin:/usr/bin)
Device "docker0" does not exist.
2014/12/12 14:41:50 Cannot connect to the Docker daemon. Is 'docker -d' running on this host?
Cannot connect to the docker daemon - verify it is running and you have access

```

PLEASE HELP!  
Miles

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