Create a new volume when pod restart in a statefulset - azure

Question

I'm using azure aks to create a statefulset with volume using azure disk provisioner.
I'm trying to find a way to write my statefulset YAML file in a way that when a pod restarts, it will get a new Volume and the old volume will be deleted.
I know I can delete volumes manually, but is there any ways to tell Kubernetes to do this via statefulset yaml?
Here is my Yaml:
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: janusgraph
labels:
app: janusgraph
spec:
...
...
template:
metadata:
labels:
app: janusgraph
spec:
containers:
- name: janusgraph
...
...
volumeMounts:
- name: data
mountPath: /var/lib/janusgraph
livenessProbe:
httpGet:
port: 8182
path: ?gremlin=g.V(123).count()
initialDelaySeconds: 120
periodSeconds: 10
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: ["ReadWriteOnce"]
storageClassName: "default"
resources:
requests:
storage: 7Gi

Answer 1

If you want your data to be deleted when the pod restarts, you can use an ephemeral volume like EmptyDir.
When a Pod is removed/restarted for any reason, the data in the emptyDir is deleted forever.
Sample:
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
spec:
selector:
matchLabels:
app: nginx # has to match .spec.template.metadata.labels
serviceName: "nginx"
replicas: 3 # by default is 1
template:
metadata:
labels:
app: nginx # has to match .spec.selector.matchLabels
spec:
terminationGracePeriodSeconds: 10
containers:
- name: nginx
image: k8s.gcr.io/nginx-slim:0.8
ports:
- containerPort: 80
name: web
volumeMounts:
- name: www
mountPath: /usr/share/nginx/html
volumes:
- name: www
emptyDir: {}
N.B.:
By default, emptyDir volumes are stored on whatever medium is backing the node - that might be disk or SSD or network storage, depending on your environment. However, you can set the emptyDir.medium field to "Memory" to tell Kubernetes to mount a tmpfs (RAM-backed filesystem) for you instead.