Plugin: OAuth2 plugin
Description: This plugin is ready to connect to Google Apps server just configuring the project information of the Google developers console.
Included in Moodle: No
Path: auth/googleoauth2
Configuration parameters:
Google Client ID: Your client ID can be generated in the Google console.
Google Client secret: Your client Secret can be generated in the Google console.
More information: Admin guide
Plugin page: Moodle plugin page
Follow this guide to configure properly the plugin.