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Nodes Stats
editNodes Stats
editNodes statistics
editThe 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/10.0.0.1/stats/process'
All stats can be explicitly requested via /_nodes/stats/_all
or /_nodes/stats?metric=_all
.
Field data statistics
editYou 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 groups
editYou 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'