Kubernetes, minikube and vpa: vpa doesn't scale up to target - kubernetes

Question

before start, i'm running kubernetes on mac.
minikube: 1.17.0
metrics-server: 1.8+
vpa: vpa-release-0.8
my issue is vpa doesn't scale up my pod just keep recreating pods. i followed gke vpa example. i set resource requests of deployment cpu: 100m, memory: 50mi. and deploy vpa. it gave me recommendation. updatemode is Auto as well. but it keep recreating pod, doesn't change resource requests when i checked the pod what recreated by kubectl describe pod podname.
enter image description here
apiVersion: autoscaling.k8s.io/v1
kind: VerticalPodAutoscaler
metadata:
name: my-vpa
spec:
targetRef:
apiVersion: "apps/v1"
kind: Deployment
name: my-app-deployment
updatePolicy:
updateMode: "Auto"
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-app-deployment
spec:
replicas: 2
selector:
matchLabels:
app: my-app-deployment
template:
metadata:
labels:
app: my-app-deployment
spec:
containers:
- name: my-container
image: k8s.gcr.io/ubuntu-slim:0.1
resources:
requests:
cpu: 100m
memory: 50Mi
command: ["/bin/sh"]
args: ["-c", "while true; do timeout 0.5s yes >/dev/null; sleep 0.5s; done"]
Status:
Conditions:
Last Transition Time: 2021-02-03T03:13:38Z
Status: True
Type: RecommendationProvided
Recommendation:
Container Recommendations:
Container Name: my-container
Lower Bound:
Cpu: 25m
Memory: 262144k
Target:
Cpu: 548m
Memory: 262144k
Uncapped Target:
Cpu: 548m
Memory: 262144k
Upper Bound:
Cpu: 100G
Memory: 100T
Events: <none>
i tried with kind as well. but it recreate pods with new resource request, but never run keep pending because the node's resource is not enough. and i think the reason why vpa doesn't work properly is minikube or me didn't make multiple node. you think is that relative?