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Nodes Info
editNodes Info
editThe cluster nodes info API allows to retrieve one or more (or all) of the cluster nodes information.
curl -XGET 'http://localhost:9200/_nodes' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2'
The first command retrieves information of all the nodes in the cluster.
The second command selectively retrieves nodes information of only
nodeId1
and nodeId2
. All the nodes selective options are explained
here.
By default, it just returns all attributes and core settings for a node.
It also allows to get only information on settings
, os
, process
, jvm
,
thread_pool
, network
, transport
, http
and plugins
:
curl -XGET 'http://localhost:9200/_nodes/process' curl -XGET 'http://localhost:9200/_nodes/_all/process' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/jvm,process' # same as above curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/info/jvm,process' curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/_all
The _all
flag can be set to return all the information - or you can simply omit it.
plugins
- if set, the result will contain details about the loaded
plugins per node:
-
name
: plugin name -
description
: plugin description if any -
site
:true
if the plugin is a site plugin -
jvm
:true
if the plugin is a plugin running in the JVM -
url
: URL if the plugin is a site plugin
The result will look similar to:
{ "cluster_name" : "test-cluster-MacBook-Air-de-David.local", "nodes" : { "hJLXmY_NTrCytiIMbX4_1g" : { "name" : "node4", "transport_address" : "inet[/172.18.58.139:9303]", "hostname" : "MacBook-Air-de-David.local", "version" : "0.90.0.Beta2-SNAPSHOT", "http_address" : "inet[/172.18.58.139:9203]", "plugins" : [ { "name" : "test-plugin", "description" : "test-plugin description", "site" : true, "jvm" : false }, { "name" : "test-no-version-plugin", "description" : "test-no-version-plugin description", "site" : true, "jvm" : false }, { "name" : "dummy", "description" : "No description found for dummy.", "url" : "/_plugin/dummy/", "site" : false, "jvm" : true } ] } } }
if your plugin
data is subject to change use
plugins.info_refresh_interval
to change or disable the caching
interval:
# Change cache to 20 seconds plugins.info_refresh_interval: 20s # Infinite cache plugins.info_refresh_interval: -1 # Disable cache plugins.info_refresh_interval: 0