GitLab OAuth2 Authentication

To enable the GitLab OAuth2 you must register an application in GitLab. GitLab will generate a client ID and secret key for you to use.

Create GitLab OAuth keys

You need to create a GitLab OAuth application. Choose a descriptive Name, and use the following Redirect URI:

https://grafana.example.com/login/gitlab

where https://grafana.example.com is the URL you use to connect to Grafana. Adjust it as needed if you don’t use HTTPS or if you use a different port; for instance, if you access Grafana at http://203.0.113.31:3000, you should use

http://203.0.113.31:3000/login/gitlab

Finally, select api as the Scope and submit the form. Note that if you’re not going to use GitLab groups for authorization (i.e. not setting allowed_groups, see below), you can select read_user instead of api as the Scope, thus giving a more restricted access to your GitLab API.

You’ll get an Application Id and a Secret in return; we’ll call them GITLAB_APPLICATION_ID and GITLAB_SECRET respectively for the rest of this section.

Enable GitLab in Grafana

Add the following to your Grafana configuration file to enable GitLab authentication:

[auth.gitlab]
enabled = false
allow_sign_up = false
client_id = GITLAB_APPLICATION_ID
client_secret = GITLAB_SECRET
scopes = api
auth_url = https://gitlab.com/oauth/authorize
token_url = https://gitlab.com/oauth/token
api_url = https://gitlab.com/api/v4
allowed_groups =

Restart the Grafana backend for your changes to take effect.

If you use your own instance of GitLab instead of gitlab.com, adjust auth_url, token_url and api_url accordingly by replacing the gitlab.com hostname with your own.

With allow_sign_up set to false, only existing users will be able to login using their GitLab account, but with allow_sign_up set to true, any user who can authenticate on GitLab will be able to login on your Grafana instance; if you use the public gitlab.com, it means anyone in the world would be able to login on your Grafana instance.

You can can however limit access to only members of a given group or list of groups by setting the allowed_groups option.

allowed_groups

To limit access to authenticated users that are members of one or more GitLab groups, set allowed_groups to a comma- or space-separated list of groups. For instance, if you want to only give access to members of the example group, set

allowed_groups = example

If you want to also give access to members of the subgroup bar, which is in the group foo, set

allowed_groups = example, foo/bar

Note that in GitLab, the group or subgroup name doesn’t always match its display name, especially if the display name contains spaces or special characters. Make sure you always use the group or subgroup name as it appears in the URL of the group or subgroup.

Here’s a complete example with alloed_sign_up enabled, and access limited to the example and foo/bar groups:

[auth.gitlab]
enabled = false
allow_sign_up = true
client_id = GITLAB_APPLICATION_ID
client_secret = GITLAB_SECRET
scopes = api
auth_url = https://gitlab.com/oauth/authorize
token_url = https://gitlab.com/oauth/token
api_url = https://gitlab.com/api/v4
allowed_groups = example, foo/bar