Configure the Google Cloud Service account

In order to gather data from the Google Pub/Sub, Google Cloud Monitoring, and Google Cloud Billing using this add-on, create a Google Cloud Service account for each project from the Google Cloud Console. For more information, see the create service accounts and create/delete service account keys topics in the Google Cloud documentation.
A service account's credentials, obtained from the Google API Console, include a uniquely generated email address, a client ID, and at least one public/private key pair. You might also need to add a predefined role to your service account. After you have your new public/private key pair, save it to your machine.

Your new public/private key pair is generated and downloaded to your machine, and it serves as the only copy of this key. You are responsible for storing it securely.

To get data from Google Cloud Platform, you need to enable related APIs in Google Cloud Platform. For more information, see the Google Cloud storage APIs & Reference and Getting Endpoints Quickstart documentation.