istio-ingressgateway-podmonitor.yaml

# Adapted from https://github.com/istio/istio/blob/master/manifests/charts/istio-telemetry/prometheusOperator/templates/servicemonitors.yaml
# Note that namespace and commonLabels must be added by a kustomize base like ../base-label-prometheus-now/
apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  name: istio-ingressgateway
spec:
  jobLabel: app
  namespaceSelector:
    # TODO didn't show up in Prometheus with false here and namespace=istio-system
    any: true
  selector:
    matchLabels:
      app: istio-ingressgateway
  podMetricsEndpoints:
  - path: /stats/prometheus
    targetPort: 15090 # This field is deprecated but the deployment doesn't name its ports
    relabelings:
    - sourceLabels: [__meta_kubernetes_pod_container_port_name]
      action: keep
      regex: '.*-envoy-prom'
    - action: labeldrop
      regex: "__meta_kubernetes_pod_label_(.+)"
    - sourceLabels: [__meta_kubernetes_namespace]
      action: replace
      targetLabel: namespace
    - regex: '__meta_kubernetes_pod_name'
      action: labeldrop
    - regex: '__meta_kubernetes_pod_container_port_number'
      action: labeldrop