How to monitor Istio stats based on URI using prometheus?

Question

We are using Istio 1.15.4 on EKS 1.23.6. Our application URL has customer id in it, for eg. https://neeleshgurjar.co.in/api/v1/customer_11

https://neeleshgurjar.co.in/api/v1/customer_12

All requests are landing on Istio Ingress Gateway i.e. AWS managed ALB.

Now how can I monitor the number of request for customer_11 and same for customer_12?

I want to monitor them using Prometheus - grafana stack.

Answer 1

https://istio.io/latest/docs/tasks/observability/metrics/customize-metrics/

you can refer to this

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  values:
    telemetry:
      v2:
        prometheus:
          configOverride:
            inboundSidecar:
              metrics:
                - name: requests_path
                  dimensions:
                    request_host: request.path
            gateway:
              metrics:
                - name: requests_path
                  dimensions:
                    request_host: request.path