Cluster stats

The cluster stats API operation returns statistics about your cluster.

All cluster stats parameters are optional.

Field	Description
nodes	How many nodes returned in the response.
cluster_name	The cluster’s name.
cluster_uuid	The cluster’s uuid.
timestamp	The Unix epoch time of when the cluster was last refreshed.
status	The cluster’s health status.
indices	Statistics about the indexes in the cluster.
indices.count	How many indexes are in the cluster.
indices.shards	Information about the cluster’s shards.
indices.docs	How many documents are still in the cluster and how many documents are deleted.
indices.store	Information about the cluster’s storage.
indices.fielddata	Information about the cluster’s field data
indices.query_cache	Data about the cluster’s query cache.
indices.completion	How many bytes in memory are used to complete operations.
indices.segments	Information about the cluster’s segments, which are small Lucene indexes.
indices.mappings	Mappings within the cluster.
indices.analysis	Information about analyzers used in the cluster.
nodes	Statistics about the nodes in the cluster.
nodes.count	How many nodes were returned from the request.
nodes.versions	OpenSearch’s version number.
nodes.os	Information about the operating systems used in the nodes.
nodes.process	The processes the returned nodes use.
nodes.jvm	Statistics about the Java Virtual Machines in use.
nodes.fs	The nodes’ file storage.
nodes.plugins	The OpenSearch plugins integrated within the nodes.
nodes.network_types	The transport and HTTP networks within the nodes.
nodes.discovery_type	The method the nodes use to find other nodes within the cluster.
nodes.packaging_types	Information about the nodes’ OpenSearch distribution.
nodes.ingest	Information about the nodes’ ingest pipelines/nodes, if there are any.