I have an elasticsearch cluster that has the storage field set to 10Gi, I want to resize this cluster (for testing purposes to 15Gi). However, after changing the storage value from 10Gi to 15Gi I can see that the cluster still did not resize and the generated PVC is still set to 10Gi.

From what I can tell the aws-ebs storage https://kubernetes.io/docs/concepts/storage/storage-classes/ allows for volume expansion when the field allowVolumeExpansion is true. But even when I have this, the volume is never expanded when I change that storage value

---
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: elasticsearch-storage
  namespace: test
provisioner: kubernetes.io/aws-ebs
parameters:
  type: gp2
reclaimPolicy: Delete
allowVolumeExpansion: true
---
apiVersion: elasticsearch.k8s.elastic.co/v1beta1
kind: Elasticsearch
metadata:
  name: elasticsearch
  namespace: test
spec:
  version: 7.4.2
  spec:
    http:
      tls:
        certificate:
          secretName: es-cert
  nodeSets:
  - name: default
    count: 3
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
        annotations:
          volume.beta.kubernetes.io/storage-class: elasticsearch-storage
      spec:
        accessModes:
        - ReadWriteOnce
        storageClassName: elasticsearch-storage
        resources:
          requests:
            storage: 15Gi
    config:
      node.master: true
      node.data: true
      node.ingest: true
      node.store.allow_mmap: false
      xpack.security.authc.realms:
        native:
          native1: 
            order: 1
---