Cilium metrics

Use Hubble metrics to monitor network traffic in your cluster.

Before you begin

1. Set up the Gloo telemetry pipeline. When you enable the pipeline, you get a few Cilium metrics by default. For more information, see View default metrics.
2. Optional: You can enable additional Cilium metrics to gain insight into the health of the Cilium agent, Cilium operator, and your network traffic. These additional metrics are also used to feed the Cilium dashboard in Grafana.

View Cilium metrics

1. Open the Prometheus UI

2. Send multiple requests to the productpage page.
   

   • HTTP
   • HTTPS

   for ((i=1;i<=10;i++)); do curl -vik --resolve www.example.com:80:${INGRESS_GW_IP} http://www.example.com:80/productpage ; done
   

   for ((i=1;i<=10;i++)); do curl -vik --resolve www.example.com:443:${INGRESS_GW_IP} https://www.example.com:443/productpage ; done
   

3. From the Prometheus expression browser, enter the following PromQL query to see the requests the product page sent to other Bookinfo microservices.

   sum(hubble_flows_processed_total{source=~"productpage.+"}) by (destination_workload_id,verdict)
   

4. Explore other queries that you run in the Prometheus expression browser to gain insight into your API Gateway.