Gitlab Active Directory LDAP Authentication
Published: 28-05-2013 | Author: Remy van Elst | Text only version of this article
❗ This post is over nine years old. It may no longer be up to date. Opinions may have changed.
Gitlab is a self hosted git based source control application similar to Github, written in Ruby on Rails. It is used by many organisations and is a wonderfull piece of software. It supports LDAP Authentication (via the OmniAuth Gem), but it is tricky to set up with Active Directory and Windows Server 2003/2008/2012. This tutorials shows you how to set up Gitlab to authenticate against Active Directory LDAP.
I'm developing a desktop monitoring app, Leaf Node Monitoring, open source, but paid. For Windows, Linux & Android, go check it out.
Consider sponsoring me on Github. It means the world to me if you show your appreciation and you'll help pay the server costs.
You can also sponsor me by getting a Digital Ocean VPS. With this referral link you'll get $100 credit for 60 days.
You have to have a working Gitlab installation for this. It is tested with Gitlab 3 and up to 5.2, with an Active Directory 2008 env, and a Mixed 2008 & 2003 AD. Gitlab is installed on a Ubuntu box.
First create a user in the Active Directory. My CN is Users, and my user is
gitlab. It does not have any special permissions, it is just a normal
user. Note the Full Name you use, in my example it is "Gitlab LDAP". See the
image below for an example:
Now go to your Gitlab server, log in and become the git user:
sudo su - git
And edit the
~/gitlab/config/gitlab.yml file. (Assuming you followed the
official installation guide, otherwise adapt path.). The relevant LDAP section
should contain this:
ldap: enabled: true host: 'pdc1.domain.tld' base: 'CN=Users,DC=Domain,DC=tld' port: 389 uid: 'sAMAccountName' method: 'plain' # or "ssl" bind_dn: 'CN=Gitlab LDAP,CN=Users,DC=Domain,DC=tld' password: 'example_password'
It took me a while to find the correct
base_dn. It appears that
they are capital sensitive,
cn=Users would not work, but
bind_dn does not use the users email address, but the
CNfirstname.lastname@example.org does not work, but
CN=Gitlab LDAP does.
Hope this helps you setting up Gitlab with LDAP auth. More info on Gitlab can be found on their website: http://gitlab.org/.Tags: active-directory , git , github , gitlab , gitlabshell , ldap , microsoft , scm , source-control , tutorials , windows-server