Nodes Statsedit

Nodes statisticsedit

The cluster nodes stats API allows to retrieve one or more (or all) of the cluster nodes statistics.

curl -XGET 'http://localhost:9200/_nodes/stats'
curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/stats'

The first command retrieves stats of all the nodes in the cluster. The second command selectively retrieves nodes stats of only nodeId1 and nodeId2. All the nodes selective options are explained here.

By default, all stats are returned. You can limit this by combining any of indices, os, process, jvm, network, transport, http, fs, breaker and thread_pool. For example:


Indices stats about size, document count, indexing and deletion times, search times, field cache size , merges and flushes


File system information, data path, free disk space, read/write stats


HTTP connection information


JVM stats, memory pool information, garbage collection, buffer pools


TCP information


Operating system stats, load average, cpu, mem, swap


Process statistics, memory consumption, cpu usage, open file descriptors


Statistics about each thread pool, including current size, queue and rejected tasks


Transport statistics about sent and received bytes in cluster communication


Statistics about the field data circuit breaker

# return indices and os
curl -XGET 'http://localhost:9200/_nodes/stats/os'
# return just os and process
curl -XGET 'http://localhost:9200/_nodes/stats/os,process'
# specific type endpoint
curl -XGET 'http://localhost:9200/_nodes/stats/process'
curl -XGET 'http://localhost:9200/_nodes/'

All stats can be explicitly requested via /_nodes/stats/_all or /_nodes/stats?metric=_all.

Field data statisticsedit

You can get information about field data memory usage on node level or on index level.

# Node Stats
curl -XGET 'http://localhost:9200/_nodes/stats/indices/?fields=field1,field2&pretty'

# Indices Stat
curl -XGET 'http://localhost:9200/_stats/fielddata/?fields=field1,field2&pretty'

# You can use wildcards for field names
curl -XGET 'http://localhost:9200/_stats/fielddata/?fields=field*&pretty'
curl -XGET 'http://localhost:9200/_nodes/stats/indices/?fields=field*&pretty'

Search groupsedit

You can get statistics about search groups for searches executed on this node.

# All groups with all stats
curl -XGET 'http://localhost:9200/_nodes/stats?pretty&groups=_all'

# Some groups from just the indices stats
curl -XGET 'http://localhost:9200/_nodes/stats/indices?pretty&groups=foo,bar'