120 lines
3.5 KiB
Plaintext
120 lines
3.5 KiB
Plaintext
[[cluster-nodes-info]]
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== Nodes Info
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The cluster nodes info API allows to retrieve one or more (or all) of
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the cluster nodes information.
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[source,js]
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--------------------------------------------------
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curl -XGET 'http://localhost:9200/_nodes'
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curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2'
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--------------------------------------------------
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The first command retrieves information of all the nodes in the cluster.
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The second command selectively retrieves nodes information of only
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`nodeId1` and `nodeId2`. All the nodes selective options are explained
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<<cluster-nodes,here>>.
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By default, it just returns all attributes and core settings for a node.
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It also allows to get only information on `settings`, `os`, `process`, `jvm`,
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`thread_pool`, `transport`, `http` and `plugins`:
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[source,js]
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--------------------------------------------------
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curl -XGET 'http://localhost:9200/_nodes/process'
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curl -XGET 'http://localhost:9200/_nodes/_all/process'
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curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/jvm,process'
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# same as above
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curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/info/jvm,process'
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curl -XGET 'http://localhost:9200/_nodes/nodeId1,nodeId2/_all
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--------------------------------------------------
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The `_all` flag can be set to return all the information - or you can simply omit it.
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[float]
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[[os-info]]
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==== Operating System information
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The `os` flag can be set to retrieve information that concern
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the operating system:
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`os.refresh_interval_in_millis`::
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Refresh interval for the OS statistics
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`os.name`::
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Name of the operating system (ex: Linux, Windows, Mac OS X)
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`os.arch`::
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Name of the JVM architecture (ex: amd64, x86)
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`os.version`::
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Version of the operating system
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`os.available_processors`::
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Number of processors available to the Java virtual machine
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[float]
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[[process-info]]
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==== Process information
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The `process` flag can be set to retrieve information that concern
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the current running process:
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`process.refresh_interval_in_millis`::
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Refresh interval for the process statistics
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`process.id`::
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Process identifier (PID)
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`process.mlockall`::
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Indicates if the process address space has been successfully locked in memory
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[float]
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[[plugins-info]]
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==== Plugins information
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`plugins` - if set, the result will contain details about the loaded
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plugins per node:
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* `name`: plugin name
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* `description`: plugin description if any
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* `site`: `true` if the plugin is a site plugin
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* `jvm`: `true` if the plugin is a plugin running in the JVM
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* `url`: URL if the plugin is a site plugin
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The result will look similar to:
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[source,js]
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--------------------------------------------------
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{
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"cluster_name" : "test-cluster-MacBook-Air-de-David.local",
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"nodes" : {
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"hJLXmY_NTrCytiIMbX4_1g" : {
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"name" : "node4",
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"transport_address" : "inet[/172.18.58.139:9303]",
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"hostname" : "MacBook-Air-de-David.local",
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"version" : "0.90.0.Beta2-SNAPSHOT",
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"http_address" : "inet[/172.18.58.139:9203]",
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"plugins" : [ {
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"name" : "test-plugin",
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"description" : "test-plugin description",
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"site" : true,
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"jvm" : false
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}, {
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"name" : "test-no-version-plugin",
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"description" : "test-no-version-plugin description",
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"site" : true,
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"jvm" : false
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}, {
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"name" : "dummy",
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"description" : "No description found for dummy.",
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"url" : "/_plugin/dummy/",
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"site" : false,
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"jvm" : true
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} ]
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}
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}
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}
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--------------------------------------------------
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