ECK fails to start

[gjahagir]

Hi.
I'm exploring ECK to evalute how it works for our requirements.

I followed the documentation here to set up the Elasticsearch operator. CRDs and Operator installed fine.

Then used this YAML to create a single node Elasticsearch

---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: standard
provisioner: kubernetes.io/aws-ebs
parameters:
  type: gp2
reclaimPolicy: Retain
allowVolumeExpansion: true
mountOptions:
  - debug
volumeBindingMode: Immediate
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: elasticsearch-data
  namespace: elastic-system
  labels:
    type: local
spec:
  storageClassName: standard
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data"
---
# This sets up an Elasticsearch cluster with 3 nodes.
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
  name: elasticsearch
  namespace: elastic-system
spec:
  version: 8.5.0
  nodeSets:
  - name: default
    config:
      node.roles: [ data, master ]
    podTemplate:
      metadata:
        labels:
          app: elasticsearch
      spec:
        initContainers:
        - name: sysctl
          securityContext:
            privileged: true
          command: ['sh', '-c', 'sysctl -w vm.max_map_count=262144']
        containers:
        - name: elasticsearch
          # specify resource limits and requests
          resources:
            requests:
              memory: 4Gi
              cpu: 0.5
            limits:
              memory: 4Gi
              cpu: 1
          env:
          - name: ES_JAVA_OPTS
            value: "-Xms2g -Xmx2g"
    count: 1
    # request 10Gi of persistent data storage for pods in this topology element
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
      spec:
        accessModes:
        - ReadWriteOnce
        storageClassName: standard
        resources:
          requests:
            storage: 10Gi
  
  # tls:
  #   certificate:
  #     secretName: elasticsearch-es-http-certs-public
  #     selfSignedCertificate:
  #       # add a list of SANs into the self-signed HTTP certificate
  #       subjectAltNames:
  #       - ip: 192.168.1.2
  #       - ip: 192.168.1.3
  #       - dns: elasticsearch-sample.example.com
  #     certificate:
  #       # provide your own certificate
  #       secretName: my-cert

now when i run this command

kubectl apply -f elasticsearch.yml

Elastic search fails to start with error -

failed to obtain node locks, tried [/usr/share/elasticsearch/data]; maybe these locations are not writable or multiple nodes were started on the same data path

how do i get past the error? and also how do i check that the path is accessible (write permissions) for the elasticsearch/data folder ? I'm new to kubernetes and also linux.

BTW i'm using kubernetes single-node cluster available in docker desktop on windows.