Google Managed Prometheus

Warning

Due to updates in the Google Managed Prometheus API, these instructions may be outdated. Please contact our team for support on Slack (https://bit.ly/robusta-slack) or by email (support@robusta.dev). We're working on updating the documentation.

Configure Robusta to use Google Cloud's Managed Service for Prometheus.

Prerequisites

Before configuring Robusta, ensure you have:

  1. Google Managed Prometheus configured with:

Quick Start

Add the following to your generated_values.yaml:

globalConfig:
    prometheus_url: "http://frontend.default.svc.cluster.local:9090"
    alertmanager_url: "http://alertmanager.gmp-system.svc.cluster.local:9093"
    check_prometheus_flags: false  # Required for Google Managed Prometheus

Then update Robusta.

Service Locations

Google Managed Prometheus typically deploys services in these locations:

Prometheus Frontend:

  • Namespace: default (or where you deployed it)

  • Service: frontend

  • Port: 9090

AlertManager:

  • Namespace: gmp-system

  • Service: alertmanager

  • Port: 9093

Verify your exact service names:

# Check frontend service
kubectl get svc -n default | grep frontend

# Check AlertManager service
kubectl get svc -n gmp-system | grep alertmanager

Configuration Notes

Warning

Google Managed Prometheus does not support the Prometheus flags API. Always set check_prometheus_flags: false.

  • The Prometheus Frontend must be deployed separately (it's not included by default)

  • Ensure all required exporters are configured for full functionality

  • Google Managed Prometheus uses a different architecture than standard Prometheus

Verification

After configuration, verify the integration:

  1. Check connectivity:

    kubectl run test-curl --image=curlimages/curl --rm -it -- \
    curl -v http://frontend.default.svc.cluster.local:9090/-/healthy

  2. Test with a demo alert:

    kubectl apply -f https://raw.githubusercontent.com/robusta-dev/kubernetes-demos/main/oomkill/oomkill_job.yaml

    You should receive an alert with metrics attached.

  3. Check Robusta logs:

    kubectl logs -n robusta deployment/robusta-runner | grep -i prometheus

Next Steps