How to integrate Redmine with GitLab step by step

To integrate Redmine with GitLab, enable the Redmine integration in GitLab settings, set up webhooks for automatic updates, and install plugins like Redmine GitLab Hook or redmine_gitlab_adapter for repository synchronization. For advanced features, use the DevOps plugin to integrate merge requests, pipelines, and issues, or enable SSO with the redmine_omniauth_gitlab plugin. Ensure proper permissions, update plugins regularly, and use API tokens securely for a smooth integration.