Modify default property using overlay object

istio.overlay-properties.yaml

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
  name: multiple-ingress-istiocontrolplane
spec:
  profile: default
  values:
    security:
      selfSigned: false
    global:
      controlPlaneSecurityEnabled: true
      mtls:
        enabled: true
      meshExpansion:
        enabled: true   
  addonComponents:
    grafana:
      enabled: false
    kiali:
      enabled: true
    prometheus:
      enabled: true
  components:
      ingressGateways:
      - name: istio-internal-ingressgateway
        enabled: true
        k8s:
          overlays: # This object will modify default properties of the component
            - kind: HorizontalPodAutoscaler
              name: istio-internal-ingressgateway
              patches:
                - path: metadata.labels.app
                  value: istio-internal-ingressgateway
                - path: metadata.labels.istio
                  value: internal-ingressgateway
                - path: spec.scaleTargetRef.name
                  value: istio-internal-ingressgateway
            - kind: Deployment
              name: istio-internal-ingressgateway
              patches:
                - path: metadata.labels.app
                  value: istio-internal-ingressgateway  # Change the label to istio-internal-ingressgateway
                - path: metadata.labels.istio
                  value: internal-ingressgateway
                - path: spec.selector.matchLabels.app
                  value: istio-internal-ingressgateway
                - path: spec.selector.matchLabels.istio
                  value: internal-ingressgateway
                - path: spec.template.metadata.labels.app
                  value: istio-internal-ingressgateway
                - path: spec.template.metadata.labels.istio
                  value: internal-ingressgateway
            - kind: Service
              name: istio-internal-ingressgateway
              patches:
                - path: metadata.labels.app
                  value: istio-internal-ingressgateway
                - path: metadata.labels.istio
                  value: internal-ingressgateway
                - path: spec.selector.app
                  value: istio-internal-ingressgateway
                - path: spec.selector.istio
                  value: internal-ingressgateway