Remediation

From Google Cloud Console

1. Go to the VM compute metadata page by visiting: https://console.cloud.google.com/compute/metadata.
2. Click Edit.
3. Add a metadata entry where the key is enable-oslogin and the value is TRUE.
4. Click Save to apply the changes.
5. For every instance that overrides the project setting, go to the VM Instances page at https://console.cloud.google.com/compute/instances.
6. Click the name of the instance on which you want to remove the metadata value.
7. At the top of the instance details page, click Edit to edit the instance settings.
8. Under Custom metadata, remove any entry with key enable-oslogin and the value is FALSE
9. At the bottom of the instance details page, click Save to apply your changes to the instance.

From Google Cloud CLI

1. Configure oslogin on the project:

        gcloud compute project-info add-metadata --metadata enable-oslogin=TRUE

2. Remove instance metadata that overrides the project setting.

        gcloud compute instances remove-metadata <INSTANCE_NAME> --keys=enable-oslogin

Optionally, you can enable two factor authentication for OS login. For more information, see: https://cloud.google.com/compute/docs/oslogin/setup-two-factor-authentication.