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Jenkins
Integrating Jenkins with the Authelia OpenID Connect 1.0 Provider.
2024-04-13 13:46:05 +1000
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Tested Versions

{{% oidc-common %}}

Assumptions

This example makes the following assumptions:

  • Application Root URL: https://jenkins.example.com/
  • Authelia Root URL: https://auth.example.com/
  • Client ID: jenkins
  • Client Secret: insecure_secret

Configuration

Authelia

The following YAML configuration is an example Authelia client configuration for use with Jenkins which will operate with the application example:

identity_providers:
  oidc:
    ## The other portions of the mandatory OpenID Connect 1.0 configuration go here.
    ## See: https://www.authelia.com/c/oidc
    clients:
      - client_id: 'jenkins'
        client_name: 'Jenkins'
        client_secret: '$pbkdf2-sha512$310000$c8p78n7pUMln0jzvd4aK4Q$JNRBzwAo0ek5qKn50cFzzvE9RXV88h1wJn5KGiHrD0YKtZaR/nCb2CJPOsKaPK0hjf.9yHxzQGZziziccp6Yng'  # The digest of 'insecure_secret'.
        public: false
        authorization_policy: 'two_factor'
        require_pkce: true
        pkce_challenge_method: 'S256'
        redirect_uris:
          - 'https://jenkins.example.com/accounts/authelia/login/callback'
        scopes:
          - 'openid'
          - 'profile'
          - 'email'
          - 'groups'
        userinfo_signed_response_alg: 'none'
        token_endpoint_auth_method: 'client_secret_basic'

Application

Installation

The plugin required to use OpenID Connect 1.0 can either be installed and configured via the GUI or via Jenkins Configuration as Code.

Via the UI

To install the Jenkins plugin for OpenID Connect 1.0 via the UI:

  1. Visit Manage Jenkins.

  2. Visit Plugins.

  3. Visit Available Plugins.

  4. Search for oic-auth.

  5. Install.

  6. Restart Jenkins.

  7. Proceed to the Configuration step.

Via Jenkins Configuration as Code

Ensure the plugin is installed before running the Jenkins Configuration as Code:

jenkins-plugin-cli --plugins oic-auth

Add this to your Jenkins Configuration as Code:

jenkins:
  systemMessage: "This Jenkins instance was configured using the Authelia example Configuration as Code, thanks Authelia!"
  securityRealm:
    oic:
      automanualconfigure: auto
      wellKnownOpenIDConfigurationUrl: https://auth.example.com/.well-known/openid-configuration
      clientId: jenkins
      clientSecret: insecure_secret
      tokenAuthMethod: client_secret_basic
      scopes: openid profile email groups
      userNameField: preferred_username
      groupsFieldName: groups
      fullNameFieldName: name
      emailFieldName: email
      pkceEnabled: true
      # escapeHatchEnabled: <boolean>
      # escapeHatchUsername: escapeHatchUsername
      # escapeHatchSecret: <string:secret>
      # escapeHatchGroup: <string>

Configuration

To configure Jenkins to utilize Authelia as an OpenID Connect 1.0 Provider:

  1. Visit Manage Jenkins.
  2. Visit Security.
  3. Select Login with Openid Connect in the Security Realm.
  4. Enter jenkins in the Client id field.
  5. Enter insecure_secret in the Client secret field.
  6. Select Automatic configuration from the configuration mode.
  7. Enter https://auth.example.com/.well-known/openid-configuration in the Well-known configuration endpoint field.
  8. Select Override scopes.
  9. Enter openid profile email groups in the Scopes field.
  10. Expand Advanced.
  11. Enter preferred_username into the User name field name field.
  12. Enter name into the Full name field name field.
  13. Enter email into the Email field name field.
  14. Enter groups into the Groups field name field.
  15. Select Enable Proof Key for Code Exchange.
  16. Consider using the Configure 'escape hatch' for when the OpenID Provider is unavailable to prevent login issues.

See Also