How to Syncronize data in elasticsearch

Elastic Stack Elasticsearch
1

I have 3 server's i need to syncronize the data of this 3 server's how can i do in elasticsearch(cluster name and index name is same in all server's,in every server i have install elasticsearch separately )

2

Are you trying to cluster three Elasticsearch nodes together? Or synchronize Elasticsearch to some external service?

3

I think it's 3 nodes, each as their own cluster. but all with the same cluster name and same data.

4

I need to synchronize the server one data to remain 2 server's in elastic search.
for example:
if i am insert the data into server one that data should be available in remain two server's or if i am insert the data into server two that data should be available in server one and three vice versa.