Add support for externally managed HPA resource

Author: pdabelf5

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

@@ -1,4 +1,4 @@
-{{- if and .Values.controller.autoscaling.enabled (or (eq .Values.controller.kind "deployment") (eq .Values.controller.kind "statefulset")) (.Capabilities.APIVersions.Has "autoscaling/v2") -}}
+{{- if and .Values.controller.autoscaling.enabled .Values.controller.autoscaling.create (or (eq .Values.controller.kind "deployment") (eq .Values.controller.kind "statefulset")) (.Capabilities.APIVersions.Has "autoscaling/v2") -}}
 apiVersion: autoscaling/v2
 kind: HorizontalPodAutoscaler
 metadata:

charts/nginx-ingress/values.schema.json

@@ -2093,6 +2093,7 @@
           "terminationGracePeriodSeconds": 30,
           "autoscaling": {
             "enabled": false,
+            "create": true,
             "annotations": {},
             "minReplicas": 1,
             "maxReplicas": 3,
@@ -2733,6 +2734,7 @@
         "terminationGracePeriodSeconds": 30,
         "autoscaling": {
           "enabled": false,
+          "create": true,
           "annotations": {},
           "minReplicas": 1,
           "maxReplicas": 3,

charts/nginx-ingress/values.yaml

@@ -243,6 +243,8 @@ controller:
   autoscaling:
     ## Enables HorizontalPodAutoscaling.
     enabled: false
+    ## Create the HorizontalPodAutoscaler resource.  This can be set to false to manage the HPA externally.
+    create: true
     ## The annotations of the Ingress Controller HorizontalPodAutoscaler.
     annotations: {}
     ## Minimum number of replicas for the HPA.