Development of Omnibus GitLab maybe done using an existing package available from Downloads page. To know how to setup a build environment to build these packages and use them, please read Setting up a Build Environment.
Setup a VM
To provide isolation and to prevent rebuilding of the package for each and every change, it is preferred to use a Virtual Machine for development. The following example uses docker on a Debian host with a Debian Jessie image. The steps are similar for other OSs; only the commands differ.
sudo apt-get install docker
For information about installing Docker on other OSs, visit official Docker installation docs.
Pulling a Debian Jessie image
docker pull debian:jessie
Running docker image with a shell prompt
docker run -it debian:jessie bash
This will cause the docker to run the jessie image and you will fall into a bash prompt, where the following steps are applied to.
Install basic necessary tools
Basic tools used for developing Omnibus GitLab may be installed using the following command
sudo apt-get install git
Getting GitLab CE nightly package and installing it
Get the latest GitLab CE nightly package (of the OS you are using) from Nightly Build repository and install it using the instructions given on that page. Once you configure and start gitlab. Check if you can access it from your host browser on <ip address of host>
Getting source of Omnibus GitLab
Get the source code of Omnibus GitLab from the repository on GitLab.com
git clone https://gitlab.com/gitlab-org/omnibus-gitlab.git ~/omnibus-gitlab
We will be doing the development inside the
Instructing GitLab to apply the changes we make to the cookbooks.
During development, we need the changes we make to the cookbooks to be applied immediately to the running GitLab instance. So, we have to instruct GitLab to use those cookbooks instead of the ones shipped during installation. This involves backing up of the existing cookbooks directory and symlinking the directory where we make modifications to its location.
sudo mv /opt/gitlab/embedded/cookbooks/gitlab /opt/gitlab/embedded/cookbooks/gitlab.$(date +%s) sudo ln -s ~/omnibus-gitlab/files/gitlab-cookbooks/gitlab /opt/gitlab/embedded/cookbooks/gitlab
Now, you can make necessary changes in the
~/omnibus-gitlab/files/gitlab-cookbooks/gitlab folder and run
sudo gitlab-ctl reconfigure
for those changes to take effect.