Making elastic persistence on Kubernetes env

[bargb (BB)]

Hi..

I am running elastic on kubernetes cluster. My Yaml is as below but this is not persisting the data after elastic restarts. What should i do to persist it

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: elasticsearch-volume
spec:
  accessModes:
    - ReadWriteMany
  storageClassName: "standard-nfs"
  resources:
    requests:
      storage: 8Gi
-----------------
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch
  namespace: bb
  labels:
    k8s-app: elasticsearch
spec:
  serviceName: elasticsearch
  replicas: 1
  updateStrategy:
    type: RollingUpdate
  selector:
    matchLabels:
      k8s-app: elasticsearch
  template:
    metadata:
      labels:
        k8s-app: elasticsearch
    spec:
      containers:
      - image: elasticsearch:7.10.1
        name: elasticsearch
        ports:
        - containerPort: 9200
          name: db
          protocol: TCP
        - containerPort: 9300
          name: transport
          protocol: TCP
        volumeMounts:
        - name: elasticsearch
          mountPath: /data
      volumes:
      - name: elasticsearch
        persistentVolumeClaim:
          claimName: elasticsearch-volume
---
apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
  namespace: bb
  labels:
    k8s-app: elasticsearch
spec:
  ports:
  - port: 9200
    protocol: TCP
    targetPort: db
  selector:
    k8s-app: elasticsearch