upgrade hpa api for default backend

charts/ingress-nginx/README.md

@@ -455,6 +455,7 @@ Kubernetes: `>=1.20.0-0`
 | controller.updateStrategy | object | `{}` | The update strategy to apply to the Deployment or DaemonSet # |
 | controller.watchIngressWithoutClass | bool | `false` | Process Ingress objects without ingressClass annotation/ingressClassName field Overrides value for --watch-ingress-without-class flag of the controller binary Defaults to false |
 | defaultBackend.affinity | object | `{}` |  |
+| defaultBackend.autoscaling.apiVersion | string | `"autoscaling/v2"` |  |
 | defaultBackend.autoscaling.annotations | object | `{}` |  |
 | defaultBackend.autoscaling.enabled | bool | `false` |  |
 | defaultBackend.autoscaling.maxReplicas | int | `2` |  |

charts/ingress-nginx/templates/default-backend-hpa.yaml

@@ -1,5 +1,5 @@
 {{- if and .Values.defaultBackend.enabled .Values.defaultBackend.autoscaling.enabled }}
-apiVersion: autoscaling/v2beta1
+apiVersion: {{ .Values.controller.autoscaling.apiVersion }}
 kind: HorizontalPodAutoscaler
 metadata:
   labels:

charts/ingress-nginx/values.yaml

@@ -826,16 +826,18 @@ defaultBackend:
     #  - name: copy-portal-skins
     #    emptyDir: {}
 
-    autoscaling:
-        annotations: {}
-        enabled: false
-        minReplicas: 1
-        maxReplicas: 2
-        targetCPUUtilizationPercentage: 50
-        targetMemoryUtilizationPercentage: 50
-    service:
-        annotations: {}
-        # clusterIP: ""
+  autoscaling:
+    annotations: {}
+    enabled: false
+    minReplicas: 1
+    maxReplicas: 2
+    targetCPUUtilizationPercentage: 50
+    targetMemoryUtilizationPercentage: 50
+
+  service:
+    annotations: {}
+
+    # clusterIP: ""
 
         # -- List of IP addresses at which the default backend service is available
         ## Ref: https://kubernetes.io/docs/user-guide/services/#external-ips