We have just released new Omnibus packages for GitLab 7.10.1 that address issues with duplicated settings.
GitLab Omnibus packages use omnibus-ctl for service control and configuration management.
For GitLab 7.10, omnibus packages were updated to version 0.3.3 of omnibus-ctl.
This caused all settings to be cached in /opt/gitlab/embedded/nodes/NODENAME.json and with
that changes to settings in /etc/gitlab/gitlab.rb would appear as a new line in
file which contains the changed setting.
The new omnibus packages contain an upgraded version of omnibus-ctl which includes the fix for this problem.
If you cannot upgrade right away and you experienced duplicated settings in configuration files, you can use the following workaround for this problem:
sudo rm -rf /opt/gitlab/embedded/nodes
sudo gitlab-ctl reconfigure
Updates
Please see our downloads page for installation instructions for the latest packages.