Elasticsearch Cluster

Run the free ES Health Check-Up get actionable recommendations that improve Elasticsearch performance

Last Update : July 2020

Cluster in Elasticsearch

What is it

In Elasticsearch a cluster is a collection of one or more nodes (servers / VMs). A cluster can consist of an unlimited number of nodes. The cluster provides interface for indexing and storing data and search capability across all of the data which is stored in the data nodes

Each cluster has a single master node that is elected by the master eligible nodes. In cases where the master is not available the other connected master eligible nodes elect a new master. Clusters are identified by a unique name, which defaults to “Elasticsearch”.


About Opster

Opster detects, prevents, optimizes and automates everything needed to run mission-critical Elasticsearch

Find Configuration Errors

Analyze Now