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

{{- if and .Values.defaultBackend.enabled .Values.defaultBackend.autoscaling.enabled }}
apiVersion: {{ ternary "autoscaling/v2" "autoscaling/v2beta2" (.Capabilities.APIVersions.Has "autoscaling/v2") }}
kind: HorizontalPodAutoscaler
metadata:
  {{- with .Values.defaultBackend.autoscaling.annotations }}
  annotations: {{ toYaml . | nindent 4 }}
  {{- end }}
  labels:
    {{- include "ingress-nginx.labels" . | nindent 4 }}
    app.kubernetes.io/component: default-backend
    {{- with .Values.defaultBackend.labels }}
    {{- toYaml . | nindent 4 }}
    {{- end }}
  name: {{ include "ingress-nginx.defaultBackend.fullname" . }}
  namespace: {{ .Release.Namespace }}
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: {{ include "ingress-nginx.defaultBackend.fullname" . }}
  minReplicas: {{ .Values.defaultBackend.autoscaling.minReplicas }}
  maxReplicas: {{ .Values.defaultBackend.autoscaling.maxReplicas }}
  metrics:
  {{- with .Values.defaultBackend.autoscaling.targetCPUUtilizationPercentage }}
  - type: Resource
    resource:
      name: cpu
      target:
        type: Utilization
        averageUtilization: {{ . }}
  {{- end }}
  {{- with .Values.defaultBackend.autoscaling.targetMemoryUtilizationPercentage }}
  - type: Resource
    resource:
      name: memory
      target:
        type: Utilization
        averageUtilization: {{ . }}
  {{- end }}
{{- end }}