custom-metrics-hpa.yaml

apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
metadata:
 name: autoscale-tester
spec:
 scaleTargetRef:
   apiVersion: apps/v1
   kind: Deployment
   name: autoscale-tester
 minReplicas: 1
 maxReplicas: 10
 metrics:
 - type: Pods
   pods:
     metric:
       name: packets_in
     target:
       type: AverageValue
       averageValue: 50