Elasticsearch path.data - elasticsearch

Question

I have two webservers, each with their own installation of Elasticsearch.
Both these webservers have a shared folder on their D: drive.
I want to use the same data folder so that I have one set of indexes and each elasticsearch install uses those same indexes, rather than having 2 sets, one on each server.
Therefore I have changed the 'path.data' location in both elasticsearch.yml files to point to the same shared folder.
Problem is, only one webserver is able to retrieve data for queries, the other server just returns nothing when running a search query.
Am I missing a config setting?

Answer 1

Are the two Elasticsearch Nodes in the same cluster ?
Each node writes to its own folder even though they share the same base directory.
As it is, seems you have two distinct Elasticsearch instances holding separate data.
Define a cluster and add the two nodes to the cluster which is the proper way to have the same data managed by multiple nodes

Answer 2

bellow config works fine
apiVersion: v1
kind: Namespace
metadata:
name: production
labels:
name: production
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: elasticsearch-data-prod
namespace: production
labels:
type: local
spec:
storageClassName: standard
capacity:
storage: 10Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/data"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: elasticsearch-data-prod
namespace: production
spec:
storageClassName: standard
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
---
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
name: data-es
namespace: production
spec:
version: 8.4.3
nodeSets:
- name: default
count: 1
config:
node.store.allow_mmap: false
podTemplate:
spec:
containers:
- name: elasticsearch
# resources:
# limits:
# memory: 2Gi
# cpu: 2
# env:
# - name: ES_JAVA_OPTS
# value: "-Xms2g -Xmx4g"
volumeMounts:
- name: elasticsearch-data-prod
mountPath: /usr/share/production/elasticsearch/data
volumeClaimTemplates:
- metadata:
name: elasticsearch-data-prod
spec:
accessModes:
- ReadWriteOnce
storageClassName: standard
resources:
requests:
storage: 10Gi
---
apiVersion: kibana.k8s.elastic.co/v1
kind: Kibana
metadata:
name: data-kibana
namespace: production
spec:
version: 8.4.3
count: 1
elasticsearchRef:
name: data-es