Integrate with Jenkins

What is Jenkins

The leading open source automation server, Jenkins provides hundreds of plugins to support building, deploying and automating any project.

-- https://www.jenkins.io/

Preparation

The following placeholders are used in this guide:

• jenkins.company is the FQDN of the Service installation.
• authentik.company is the FQDN of the authentik installation.

:::info This documentation lists only the settings that you need to change from their default values. Be aware that any changes other than those explicitly mentioned in this guide could cause issues accessing your application. :::

authentik configuration

To support the integration of Jenkins with authentik, you need to create an application/provider pair in authentik.

Create an application and provider in authentik

1. Log in to authentik as an administrator and open the authentik Admin interface.
2. Navigate to Applications > Applications and click Create with Provider to create an application and provider pair. (Alternatively you can first create a provider separately, then create the application and connect it with the provider.)

• Application: provide a descriptive name, an optional group for the type of application, the policy engine mode, and optional UI settings.
• Choose a Provider type: select OAuth2/OpenID Connect as the provider type.
• Configure the Provider: provide a name (or accept the auto-provided name), the authorization flow to use for this provider, and the following required configurations.
  • Note the Client ID, Client Secret, and slug values because they will be required later.
  • Set a Strict redirect URI to https://jenkins.company/securityRealm/finishLogin.
  • Select any available signing key.
• Configure Bindings (optional): you can create a binding (policy, group, or user) to manage the listing and access to applications on a user's My applications page.

3. Click Submit to save the new application and provider.

Jenkins configuration

Navigate to the Jenkins plugin manager: Manage Jenkins > Plugins > Available plugins. Search for the plugin oic-auth in the search field, and install the plugin. Jenkins must be restarted afterwards to ensure the plugin is loaded.

After the restart, navigate to Manage Jenkins again, and click Security.

Modify the Security Realm option to select Login with Openid Connect.

In the Client id and Client secret fields, enter the Client ID and Client Secret values from the provider you created.

Set the configuration mode to Automatic configuration and set the Well-known configuration endpoint to https://authentik.company/application/o/<application_slug>/.well-known/openid-configuration

Check the checkbox Override scopes and input the scopes openid profile email into the new input field.

Further down the page, expand the Advanced section and input the following values:

• User name field name: preferred_username
• Full name field name: name
• Email field name: email
• Groups field name: groups

We also recommend enabling the option Enable Proof Key for Code Exchange further down the page.

Additionally, as a fallback to regain access to Jenkins in the case of misconfiguration, we recommend configuring the Configure 'escape hatch' for when the OpenID Provider is unavailable option below. How to configure this option is beyond the scope of this document, and is explained by the OpenID Plugin.