Facebook OAuth2 OmniAuth Provider

To enable the Facebook OmniAuth provider you must register your application with Facebook. Facebook generates an app ID and secret key for you to use.

1. Sign in to the Facebook Developer Platform.

2. Choose "My Apps" > "Add a New App"

3. Select the type "Website"

4. Enter a name for your app. This can be anything. Consider something like "<Organization>'s GitLab" or "<Your Name>'s GitLab" or something else descriptive.

5. Choose "Create New Facebook App ID"

6. Select a Category, for example "Productivity"

7. Choose "Create App ID"

8. Enter the address of your GitLab installation at the bottom of the package

   

9. Choose "Next"

10. Choose "Skip Quick Start" in the upper right corner

11. Choose "Settings" in the menu on the left

12. Fill in a contact email for your app

    

13. Choose "Save Changes"

14. Choose "Status & Review" in the menu on the left

15. Change the switch on the right from No to Yes

16. Choose "Confirm" when prompted to make the app public

17. Choose "Dashboard" in the menu on the left

18. Choose "Show" next to the hidden "App Secret"

19. You should now see an app key and app secret (see screenshot). Keep this page open as you continue configuration.

    

20. On your GitLab server, open the configuration file.

    For Omnibus package:

    sudo editor /etc/gitlab/gitlab.rb

    For installations from source:

    cd /home/git/gitlab
    
    sudo -u git -H editor config/gitlab.yml

21. See Initial OmniAuth Configuration for initial settings.

22. Add the provider configuration:

    For Omnibus package:

    gitlab_rails['omniauth_providers'] = [
      {
        "name" => "facebook",
        "app_id" => "YOUR_APP_ID",
        "app_secret" => "YOUR_APP_SECRET"
      }
    ]

    For installations from source:

    - { name: 'facebook', app_id: 'YOUR_APP_ID',
        app_secret: 'YOUR_APP_SECRET' }

23. Change 'YOUR_APP_ID' to the API key from Facebook page in step 10.

24. Change 'YOUR_APP_SECRET' to the API secret from the Facebook page in step 10.

25. Save the configuration file.

26. Reconfigure or restart GitLab for the changes to take effect if you installed GitLab via Omnibus or from source respectively.

On the sign in page there should now be a Facebook icon below the regular sign in form. Click the icon to begin the authentication process. Facebook asks the user to sign in and authorize the GitLab application. If everything goes well the user is returned to GitLab and signed in.