65 lines
2.7 KiB
Markdown
65 lines
2.7 KiB
Markdown
---
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title: GitLab
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---
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<span class="badge badge--primary">Support level: authentik</span>
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## What is GitLab
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> GitLab is a complete DevOps platform with features for version control, CI/CD, issue tracking, and collaboration, facilitating efficient software development and deployment workflows.
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>
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> -- https://about.gitlab.com/what-is-gitlab/
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## Preparation
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The following placeholders will be used:
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- `gitlab.company` is the FQDN of the GitLab Install
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- `authentik.company` is the FQDN of the authentik Install
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Create an application in authentik and note the slug, as this will be used later. Create a SAML provider with the following parameters:
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- ACS URL: `https://gitlab.company/users/auth/saml/callback`
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- Audience: `https://gitlab.company`
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- Issuer: `https://gitlab.company`
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- Binding: `Redirect`
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Under _Advanced protocol settings_, set a certificate for _Signing Certificate_.
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## GitLab Configuration
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Paste the following block in your `gitlab.rb` file, after replacing the placeholder values from above. The file is located in `/etc/gitlab`.
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To get the value for `idp_cert_fingerprint`, navigate to the authentik Admin interface, expand the **System** section and select **Certificates**. Then, expand the selected certificate and copy the SHA1 Certificate Fingerprint.
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```ruby
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gitlab_rails['omniauth_enabled'] = true
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gitlab_rails['omniauth_allow_single_sign_on'] = ['saml']
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gitlab_rails['omniauth_sync_email_from_provider'] = 'saml'
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gitlab_rails['omniauth_sync_profile_from_provider'] = ['saml']
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gitlab_rails['omniauth_sync_profile_attributes'] = ['email']
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gitlab_rails['omniauth_auto_sign_in_with_provider'] = 'saml'
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gitlab_rails['omniauth_block_auto_created_users'] = false
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gitlab_rails['omniauth_auto_link_saml_user'] = true
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gitlab_rails['omniauth_providers'] = [
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{
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name: 'saml',
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args: {
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assertion_consumer_service_url: 'https://gitlab.company/users/auth/saml/callback',
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# Shown when navigating to certificates in authentik
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idp_cert_fingerprint: '4E:1E:CD:67:4A:67:5A:E9:6A:D0:3C:E6:DD:7A:F2:44:2E:76:00:6A',
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idp_sso_target_url: 'https://authentik.company/application/saml/<gitlab application slug>/sso/binding/redirect/',
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issuer: 'https://gitlab.company',
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name_identifier_format: 'urn:oasis:names:tc:SAML:2.0:nameid-format:persistent',
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attribute_statements: {
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email: ['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress'],
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first_name: ['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name'],
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nickname: ['http://schemas.goauthentik.io/2021/02/saml/username']
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}
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},
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label: 'authentik'
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}
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]
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```
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Afterwards, either run `gitlab-ctl reconfigure` if you're running GitLab Omnibus, or restart the container if you're using the container.
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