I created a StatefulSet for running my NodeJS with 3 replicas and want to attach to a gce disk that can become a data storage for user to upload files.

My project naming: carx; Server name: car-server

However I got an error while creating the second pod.

kubectl describe pod car-server-statefulset-1

AttachVolume.Attach failed for volume "my-app-data" : googleapi: Error 400: RESOURCE_IN_USE_BY_ANOTHER_RESOURCE - The disk resource 'projects/.../disks/carx-disk' is already being used by 'projects/.../instances/gke-cluster-...-2dw1'

car-server-statefulset.yml

apiVersion: v1
kind: Service
metadata:
  name: car-server-service
  labels:
    app: car-server
spec:
  ports:
  - port: 8080
    name: car-server
  clusterIP: None
  selector:
    app: car-server
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: car-server-statefulset
spec:
  serviceName: "car-server-service"
  replicas: 3
  template:
    metadata:
      labels:
        app: car-server
    spec:
      containers:
        - name: car-server
          image: myimage:latest
          ports:
            - containerPort: 8080
              name: nodejs-port
          volumeMounts:
          - name: my-app-data
            mountPath: /usr/src/app/mydata
      volumes:
      - name: my-app-data
        persistentVolumeClaim:
          claimName: example-local-claim
  selector:
    matchLabels:
      app: car-server

pvc.yml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: example-local-claim
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 5Gi
  storageClassName: standard

pv.yml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: my-app-data
  labels:
    app: my-app
spec:
  capacity:
    storage: 60Gi
  storageClassName: standard
  accessModes:
    - ReadWriteMany
  gcePersistentDisk:
    pdName: carx-disk
    fsType: ext4