kubernetes autoscaling error custome metriccs

Question

apiVersion: autoscaling/v2beta2
kind: HorizontalPodAutoscaler
metadata:
  name: busy-autoscaler
spec:
   behavior:
     scaleDown:
       stabilizationWindowSeconds: 10
       policies:
       - type: Percent
         value: 50
         periodSeconds: 15
   scaleTargetRef:
     apiVersion: apps/v1
     kind: Deployment
     name: busy-worker
   minReplicas: 1
   maxReplicas: 2
   metrics:
   - type: Resource
     resource:
       name: cpu
       target:
         type: Utilization
         averageUtilization: 50

error: error validating "hpa.yml": error validating data: ValidationError(HorizontalPodAutoscaler.spec): unknown field "behavior" in io.k8s.api.autoscaling.v2beta2.HorizontalPodAutoscalerSpec; if you choose to ignore these errors, turn validation off with --validate=false

$ kubectl version --short

Client Version: v1.18.0
Server Version: v1.14.9-eks-502bfb

Answer 1

you can check available fields by running:

kubectl explain --api-version=autoscaling/v2beta2 HorizontalPodAutoscaler.spec

which are: