139 lines
5.5 KiB
Markdown
139 lines
5.5 KiB
Markdown
---
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stage: Manage
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group: Authentication and Authorization
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
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---
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# Integrate your server with GitLab.com **(FREE SELF)**
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Import projects from GitLab.com and login to your GitLab instance with your GitLab.com account.
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To enable the GitLab.com OmniAuth provider you must register your application with GitLab.com.
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GitLab.com generates an application ID and secret key for you to use.
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1. Sign in to GitLab.com.
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1. In the upper-right corner, select your avatar.
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1. Select **Edit profile**.
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1. On the left sidebar, select **Applications**.
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1. Provide the required details for **Add new application**.
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- Name: This can be anything. Consider something like `<Organization>'s GitLab` or `<Your Name>'s GitLab` or something else descriptive.
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- Redirect URI:
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```plaintext
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# You can also use a non-SSL URL, but you should use SSL URLs.
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https://your-gitlab.example.com/import/gitlab/callback
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https://your-gitlab.example.com/users/auth/gitlab/callback
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```
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The first link is required for the importer and second for authentication.
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If you:
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- Plan to use the importer, you can leave scopes as they are.
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- Only want to use this application for authentication, we recommend using a more minimal set of scopes. `read_user` is sufficient.
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1. Select **Save application**.
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1. You should now see an **Application ID** and **Secret**. Keep this page open as you continue
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configuration.
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1. On your GitLab server, open the configuration file.
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For Omnibus package:
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```shell
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sudo editor /etc/gitlab/gitlab.rb
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```
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For installations from source:
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```shell
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cd /home/git/gitlab
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sudo -u git -H editor config/gitlab.yml
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```
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1. Edit the [common configuration file settings](omniauth.md#configure-common-settings)
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to add `gitlab` as a single sign-on provider. This enables Just-In-Time
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account provisioning for users who do not have an existing GitLab account.
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1. Add the provider configuration:
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For Omnibus installations authenticating against **GitLab.com**:
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```ruby
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gitlab_rails['omniauth_providers'] = [
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{
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name: "gitlab",
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# label: "Provider name", # optional label for login button, defaults to "GitLab.com"
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app_id: "YOUR_APP_ID",
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app_secret: "YOUR_APP_SECRET",
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args: { scope: "read_user" } # optional: defaults to the scopes of the application
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}
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]
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```
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Or, for Omnibus installations authenticating against a different GitLab instance:
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```ruby
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gitlab_rails['omniauth_providers'] = [
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{
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name: "gitlab",
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label: "Provider name", # optional label for login button, defaults to "GitLab.com"
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app_id: "YOUR_APP_ID",
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app_secret: "YOUR_APP_SECRET",
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args: { scope: "read_user", # optional: defaults to the scopes of the application
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client_options: { site: "https://gitlab.example.com" } }
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}
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]
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```
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For installations from source authenticating against **GitLab.com**:
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```yaml
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- { name: 'gitlab',
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# label: 'Provider name', # optional label for login button, defaults to "GitLab.com"
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app_id: 'YOUR_APP_ID',
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app_secret: 'YOUR_APP_SECRET',
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```
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Or, for installations from source to authenticate against a different GitLab instance:
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```yaml
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- { name: 'gitlab',
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label: 'Provider name', # optional label for login button, defaults to "GitLab.com"
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app_id: 'YOUR_APP_ID',
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app_secret: 'YOUR_APP_SECRET',
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args: { "client_options": { "site": 'https://gitlab.example.com' } }
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```
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NOTE:
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In GitLab 15.1 and earlier, the `site` parameter requires an `/api/v4` suffix.
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We recommend you drop this suffix after you upgrade to GitLab 15.2 or later.
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1. Change `'YOUR_APP_ID'` to the Application ID from the GitLab.com application page.
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1. Change `'YOUR_APP_SECRET'` to the secret from the GitLab.com application page.
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1. Save the configuration file.
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1. Based on how GitLab was installed, implement these changes by using
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the appropriate method:
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- Omnibus GitLab: [reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure).
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- Source: [restart GitLab](../administration/restart_gitlab.md#installations-from-source).
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On the sign-in page, there should now be a GitLab.com icon following the
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regular sign-in form. Select the icon to begin the authentication process.
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GitLab.com asks the user to sign in and authorize the GitLab application. If
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everything goes well, the user is returned to your GitLab instance and is
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signed in.
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## Reduce access privileges on sign in
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> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/337663) in GitLab 14.8 [with a flag](../administration/feature_flags.md) named `omniauth_login_minimal_scopes`. Disabled by default.
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> - [Enabled on GitLab.com](https://gitlab.com/gitlab-org/gitlab/-/issues/351331) in GitLab 14.9.
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> - [Feature flag `omniauth_login_minimal_scopes`](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/83453) removed in GitLab 15.2
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If you use a GitLab instance for authentication, you can reduce access rights when an OAuth application is used for sign in.
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Any OAuth application can advertise the purpose of the application with the
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authorization parameter: `gl_auth_type=login`. If the application is
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configured with `api` or `read_api`, the access token is issued with
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`read_user` for login, because no higher permissions are needed.
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The GitLab OAuth client is configured to pass this parameter, but other
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applications can also pass it.
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