prysm-pulse/k8s/monitoring/grafana.service.yaml

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: grafana-gateway
  namespace: istio-system
spec:
  selector:
    istio: ingressgateway
  servers:
  - port:
      number: 15031
      name: http2-grafana
      protocol: HTTP2
    hosts:
    - "grafana.prylabs.net"
---
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:
  name: grafana
  namespace: istio-system
spec:
  host: grafana.istio-system.svc.cluster.local
  trafficPolicy:
    tls:
      mode: DISABLE      
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: grafana-virtual-service
  namespace: istio-system
spec:
  hosts:
  - "grafana.prylabs.net"
  gateways:
  - grafana-gateway
  http:
  - match:
    - port: 15031
    route:
    - destination:
        host: grafana.istio-system.svc.cluster.local
        port:
          number: 3000