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I have an apache2 server running on a Mac OS X machine with the same machine running Gitlab virtually in Ubuntu.

Mac IP:

Ubuntu (virtual) IP:

I would like apache to make to go to the Ubuntu virtual machine while go to the Mac.

I added a file (gitlab.mydomain.conf) to /private/etc/apache2/other/ (on the Mac) with the following contents

<VirtualHost *:80>
  ProxyPass /
  ProxyPassReverse /
  ProxyPreserveHost On


The gitlab.yml on the Ubuntu virtual machine file contains

##Gitlab settings
  ## Web server settings
  port: 80
  https: false

When I go to I get the following error:

Proxy Error

The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /users/sign_in.

Reason: DNS lookup failure for:

But if I go to I get the Gitlab sign in page.

Any ideas on what is wrong?

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Can someone with enough reputation add a Gitlab tag to this question? –  Michael Frost Jun 1 '13 at 15:25

2 Answers 2


<VirtualHost *:80>
  ProxyPass /
  ProxyPassReverse /
  ProxyPreserveHost On

From mod_proxy ProxyPass docs

If the first argument ends with a trailing /, the second argument
should also end with a trailing / and vice versa. Otherwise the
resulting requests to the backend may miss some needed slashes and
do not deliver the expected results.
share|improve this answer

I guess you haven't searched enough.

  1. You will need to edit file /home/gitlab/gitlab/config/unicorn.rb
  2. Find line listen "#{app_dir}/tmp/sockets/gitlab.socket" and comment it. Uncomment line listen ""
  3. Enable the apache module proxy with sudo a2enmod proxy
  4. Enable the apache module proxy_http with sudo a2enmod proxy_http
  5. Add this to your virtual host

    <VirtualHost *:80>
    # Custom log file locations
    ErrorLog /var/log/apache2/gitlab_error.log
    CustomLog /var/log/apache2/gitlab_access.log combined
    ProxyRequests Off
    ProxyPreserveHost On
    ProxyPass /
    <Location />
        ProxyPassReverse /
        Order deny,allow
        Allow from all

  6. Restart gitlab & apache

  7. Have fun.

share|improve this answer
Awesome answer. Thanks for posting that. –  Sebastian Sastre Feb 12 '14 at 10:33

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