Elasticsearch statefulset does not create volumesClaims on rook-cephfs - elasticsearch

Question

I am trying to deploy an elasticsearch statfulset and have the storage provisioned by rook-ceph storageclass.
The pod is in pending mode because of:
Warning FailedScheduling 87s default-scheduler 0/4 nodes are available: 4 pod has unbound immediate PersistentVolumeClaims.
The statefull set looks like this:
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: elasticsearch
namespace: rcc
labels:
app: elasticsearch
tier: backend
type: db
spec:
serviceName: es
replicas: 3
selector:
matchLabels:
app: elasticsearch
tier: backend
type: db
template:
metadata:
labels:
app: elasticsearch
tier: backend
type: db
spec:
terminationGracePeriodSeconds: 300
initContainers:
- name: fix-the-volume-permission
image: busybox
command:
- sh
- -c
- chown -R 1000:1000 /usr/share/elasticsearch/data
securityContext:
privileged: true
volumeMounts:
- name: data
mountPath: /usr/share/elasticsearch/data
- name: increase-the-vm-max-map-count
image: busybox
command:
- sysctl
- -w
- vm.max_map_count=262144
securityContext:
privileged: true
- name: increase-the-ulimit
image: busybox
command:
- sh
- -c
- ulimit -n 65536
securityContext:
privileged: true
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch-oss:7.7.1
ports:
- containerPort: 9200
name: http
- containerPort: 9300
name: tcp
resources:
requests:
memory: 4Gi
limits:
memory: 6Gi
env:
- name: cluster.name
value: elasticsearch
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: discovery.zen.ping.unicast.hosts
value: "elasticsearch-0.es.default.svc.cluster.local,elasticsearch-1.es.default.svc.cluster.local,elasticsearch-2.es.default.svc.cluster.local"
- name: ES_JAVA_OPTS
value: -Xms4g -Xmx4g
volumeMounts:
- name: data
mountPath: /usr/share/elasticsearch/data
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes:
- ReadWriteOnce
storageClassName: rook-cephfs
resources:
requests:
storage: 5Gi
and the reson of the pvc is not getting created is:
Normal FailedBinding 47s (x62 over 15m) persistentvolume-controller no persistent volumes available for this claim and no storage class is set
Any idea what I do wrong?

Answer 1

After adding rook-ceph-block storage class and changing the storageclass to that it worked without any issues.