Before you begin

Follow the Get started guide to install Gloo Gateway v2, set up a gateway resource, and deploy the httpbin sample app.

Set up Prometheus

  1. Deploy Prometheus in your cluster or configure your Prometheus instance to scrape metrics from the gateway pod. For example, if you use the Prometheus community Helm chart to install Prometheus, add the following configuration to your Helm values file.

      helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

helm upgrade --install kube-prometheus-stack \
prometheus-community/kube-prometheus-stack \
--version 30.0.1 \
--namespace monitoring \
--create-namespace \
--values - <<EOF
serverFiles:
  prometheus.yml:
    scrape_configs:
    - job_name: gateway-metrics
      scrape_interval: 15s
      scrape_timeout: 10s
      static_configs:
      - targets:
        - gloo-proxy-http.gloo-system:8080
EOF

  2. Verify that the Prometheus components are up and running.

      kubectl get pods -n monitoring

    Example output:

      NAME                                                        READY   STATUS    RESTARTS   AGE
alertmanager-kube-prometheus-stack-alertmanager-0           2/2     Running   0          60s
kube-prometheus-stack-grafana-5ff66f6dd7-8ldll              3/3     Running   0          65s
kube-prometheus-stack-kube-state-metrics-6c7f84c486-8rzc6   1/1     Running   0          64s
kube-prometheus-stack-operator-79cb67969d-6wqdq             1/1     Running   0          64s
kube-prometheus-stack-prometheus-node-exporter-4gpzj        1/1     Running   0          65s
kube-prometheus-stack-prometheus-node-exporter-6xfh8        1/1     Running   0          65s
kube-prometheus-stack-prometheus-node-exporter-74tqb        1/1     Running   0          65s
kube-prometheus-stack-prometheus-node-exporter-9j9lv        1/1     Running   0          65s
kube-prometheus-stack-prometheus-node-exporter-vsgdh        1/1     Running   0          65s
kube-prometheus-stack-prometheus-node-exporter-zc9wk        1/1     Running   0          65s
prometheus-kube-prometheus-stack-prometheus-0               2/2     Running   0          60s

  3. Port-forward the gateway deployment on port 19000.

      kubectl -n gloo-system port-forward deployment/gloo-proxy-http 19000

  4. Access the gateway metrics by reviewing the Prometheus statistics.