Google Cloud Managed Service for Prometheus is Google Cloud’s fully managed, multi-cloud, cross-project solution for Prometheus metrics. It lets you globally monitor and alert on your workloads, using Prometheus, without having to manually manage and operate Prometheus at scale.

kubectl edit Prometheus prometheus-kube-prometheus-prometheus :

     --enable-managed-prometheus
        Enables managed collection for Managed Service for Prometheus in
        the cluster.

        See
        https://cloud.google.com/stackdriver/docs/managed-prometheus/setup-managed#enable-mgdcoll-gke
        for more info.

        Enabled by default for cluster versions 1.27 or greater, use
        --no-enable-managed-prometheus to disable.