# 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:** [2014年十二月12日 19:45 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:** 6\
**Page:** 2

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**Author:** ![ansenxz](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ansenxz/32/291033_2.png) [@ansenxz](https://meta.discourse.org/u/ansenxz)\
**Post date:** [2015年十二月17日 00:40 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/23 "2015-12-17T00:40:42Z")

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try  
`systemctl start docker.service`

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**Author:** ![AstonJ](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/astonj/32/215041_2.png) [@AstonJ](https://meta.discourse.org/u/AstonJ)\
**Post date:** [2015年十二月17日 01:16 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/24 "2015-12-17T01:16:37Z")

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In case anyone finds it handy in future:

> [@Set up Discourse on a server with existing Apache sites](https://meta.discourse.org/t/set-up-discourse-on-a-server-with-existing-apache-sites/30013/1):
>
> Install Docker
> 
> I used the CentOS guide here: [https://docs.docker.com/installation/centos](https://docs.docker.com/installation/centos) (you only need to go as far as installing docker - you don’t need to pull any images)
> 
> Then start it, and set it to start on boot.

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**Author:** ![jonnymccullagh](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jonnymccullagh/32/122050_2.png) [@jonnymccullagh](https://meta.discourse.org/u/jonnymccullagh)\
**Post date:** [2015年十二月30日 16:04 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/25 "2015-12-30T16:04:35Z")

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On CentOS 7 try linking the non-existent [docker.io](http://docker.io) binary to the existing docker binary as follows:  
ln -s /usr/bin/docker /usr/bin/docker.io

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**Author:** ![awfulcitizen](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/awfulcitizen/32/116914_2.png) [@awfulcitizen](https://meta.discourse.org/u/awfulcitizen)\
**Post date:** [2017年四月25日 00:15 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/26 "2017-04-25T00:15:20Z")

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This did it for me just now…

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**Author:** ![Quintin\_Par](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/quintin_par/32/120500_2.png) [@Quintin\_Par](https://meta.discourse.org/u/Quintin_Par)\
**Post date:** [2017年八月22日 21:25 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/27 "2017-08-22T21:25:42Z")

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Worked. Somehow this should come up as the right answer.

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**Author:** ![Dan\_Healy](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/dan_healy/32/76851_2.png) [@Dan\_Healy](https://meta.discourse.org/u/Dan_Healy)\
**Post date:** [2017年八月23日 12:31 UTC](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095/28 "2017-08-23T12:31:30Z")

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Exactly. If it says docker isn’t running, just do a `service docker start` and move on. That’s what I did.

[上一頁](https://meta.discourse.org/t/cant-run-the-launcher-to-install-discourse-on-centos-7/23095.md?page=1)