Add new flag to watch ingressclass by name instead of spec (#7609)

charts/ingress-nginx/templates/controller-daemonset.yaml

@@ -114,6 +114,9 @@ spec:
           {{- if .Values.controller.healthCheckHost }}
             - --healthz-host={{ .Values.controller.healthCheckHost }}
           {{- end }}
+          {{- if .Values.controller.ingressClassByName }}
+            - --ingress-class-by-name=true
+          {{- end }}
           {{- if .Values.controller.watchIngressWithoutClass }}
             - --watch-ingress-without-class=true
           {{- end }}

charts/ingress-nginx/templates/controller-deployment.yaml

@@ -115,6 +115,9 @@ spec:
           {{- if not (eq .Values.controller.healthCheckPath "/healthz") }}
             - --health-check-path={{ .Values.controller.healthCheckPath }}
           {{- end }}
+          {{- if .Values.controller.ingressClassByName }}
+            - --ingress-class-by-name=true
+          {{- end }}
           {{- if .Values.controller.watchIngressWithoutClass }}
             - --watch-ingress-without-class=true
           {{- end }}

charts/ingress-nginx/values.yaml

@@ -66,6 +66,9 @@ controller:
   # Defaults to false
   watchIngressWithoutClass: false
 
+  # Process IngressClass per name (additionally as per spec.controller)
+  ingressClassByName: false
+
   # Required for use with CNI based kubernetes installations (such as ones set up by kubeadm),
   # since CNI and hostport don't mix yet. Can be deprecated once https://github.com/kubernetes/kubernetes/issues/23920
   # is merged