apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
  name: elasticsearch-ha
  namespace: elasticsearch
spec:
  version: 7.17.0
  nodeSets:
  - name: default
    count: 3
    config:
      node.store.allow_mmap: false  # Recommended for containerized environments
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
      spec:
        accessModes:
        - ReadWriteOnce
        storageClassName: longhorn
        resources:
          requests:
            storage: 20Gi