153 lines
4.2 KiB
Plaintext
153 lines
4.2 KiB
Plaintext
[[cluster-nodes-stats]]
|
|
== Nodes Stats
|
|
|
|
[float]
|
|
=== Nodes statistics
|
|
|
|
The cluster nodes stats API allows to retrieve one or more (or all) of
|
|
the cluster nodes statistics.
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
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
|
|
<<cluster-nodes,here>>.
|
|
|
|
By default, all stats are returned. You can limit this by combining any
|
|
of `indices`, `os`, `process`, `jvm`, `transport`, `http`,
|
|
`fs`, `breaker` and `thread_pool`. For example:
|
|
|
|
[horizontal]
|
|
`indices`::
|
|
Indices stats about size, document count, indexing and
|
|
deletion times, search times, field cache size, merges and flushes
|
|
|
|
`fs`::
|
|
File system information, data path, free disk space, read/write
|
|
stats (see <<fs-info,FS information>>)
|
|
|
|
`http`::
|
|
HTTP connection information
|
|
|
|
`jvm`::
|
|
JVM stats, memory pool information, garbage collection, buffer
|
|
pools
|
|
|
|
`os`::
|
|
Operating system stats, load average, cpu, mem, swap
|
|
|
|
`process`::
|
|
Process statistics, memory consumption, cpu usage, open
|
|
file descriptors
|
|
|
|
`thread_pool`::
|
|
Statistics about each thread pool, including current
|
|
size, queue and rejected tasks
|
|
|
|
`transport`::
|
|
Transport statistics about sent and received bytes in
|
|
cluster communication
|
|
|
|
`breaker`::
|
|
Statistics about the field data circuit breaker
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
# 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'
|
|
--------------------------------------------------
|
|
|
|
The `all` flag can be set to return all the stats.
|
|
|
|
[float]
|
|
[[fs-info]]
|
|
==== FS information
|
|
|
|
The `fs` flag can be set to retrieve
|
|
information that concern the file system:
|
|
|
|
`fs.timestamp`::
|
|
Last time the file stores statistics have been refreshed
|
|
|
|
`os.total.total_in_bytes`::
|
|
Total size (in bytes) of all file stores
|
|
|
|
`os.total.free_in_bytes`::
|
|
Total number of unallocated bytes in all file stores
|
|
|
|
`os.total.available_in_bytes`::
|
|
Totalnumber of bytes available to this Java virtual machine on all file stores
|
|
|
|
`os.data`::
|
|
List of all file stores
|
|
|
|
`os.data.path`::
|
|
Path to the file store
|
|
|
|
`os.data.mount`::
|
|
Mount point of the file store (ex: /dev/sda2)
|
|
|
|
`os.data.type`::
|
|
Type of the file store (ex: ext4)
|
|
|
|
`os.data.total_in_bytes`::
|
|
Total size (in bytes) of thefile store
|
|
|
|
`os.data.free_in_bytes`::
|
|
Total number of unallocated bytes in the file store
|
|
|
|
`os.data.available_in_bytes`::
|
|
Totalnumber of bytes available to this Java virtual machine on this file store
|
|
|
|
`os.data.spins` (Linux only)::
|
|
Indicates if the file store is backed by spinning storage.
|
|
`null` means we could not determine it, `true` means the device possibly spins
|
|
and `false` means it does not (ex: solid-state disks).
|
|
|
|
|
|
[float]
|
|
[[field-data]]
|
|
=== Field data statistics
|
|
|
|
You can get information about field data memory usage on node
|
|
level or on index level.
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
# 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'
|
|
--------------------------------------------------
|
|
|
|
[float]
|
|
[[search-groups]]
|
|
=== Search groups
|
|
|
|
You can get statistics about search groups for searches executed
|
|
on this node.
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
# 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'
|
|
--------------------------------------------------
|