Integrating Jenkins with LDAP, GitLab, and GitHub for Automated Authentication

In this guide we demonstrate how to connect Jenkins to three common authentication sources—LDAP, GitLab, and GitHub—so that users can log in to Jenkins using their existing credentials.

0. Preparation

Before starting, adjust the Jenkins authorization strategy to allow any logged‑in user to perform actions; remember to revert this setting after the integration succeeds.

1. LDAP Integration

Install the LDAP plugin via Jenkins’ plugin manager, then configure the LDAP server address and an administrator account (the example uses a Docker‑deployed LDAP on a NUC). After entering the details, use the “Test Connection” button before saving.

2. GitLab Integration

Create a new OAuth application in GitLab’s admin area to obtain an application ID and secret, then install the GitLab authentication plugin in Jenkins and configure it with those credentials.

3. GitHub Integration

The process mirrors the GitLab setup: create an OAuth app in GitHub, note the client ID and secret, install the GitHub authentication plugin in Jenkins, and fill in the credentials.

After completing the configurations, logging out of Jenkins and returning to the login page redirects users to the respective GitLab or GitHub authentication screens, confirming that the integrations work as intended.