Cluster State

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The cluster state API allows to get a comprehensive state information of the whole cluster.

$ curl -XGET 'http://localhost:9200/_cluster/state'

By default, the cluster state request is routed to the master node, to ensure that the latest cluster state is returned. For debugging purposes, you can retrieve the cluster state local to a particular node by adding local=true to the query string.

Response Filters

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It is possible to filter the cluster state response using the following REST parameters:

filter_nodes
Set to true to filter out the nodes part of the response.
filter_routing_table
Set to true to filter out the routing_table part of the response.
filter_metadata
Set to true to filter out the metadata part of the response.
filter_blocks
Set to true to filter out the blocks part of the response.
filter_indices
When not filtering metadata, a comma separated list of indices to include in the response.

Example follows:

$ curl -XGET 'http://localhost:9200/_cluster/state?filter_nodes=true'