elasticsearch/docs/reference/cluster/cluster-info.asciidoc

[[cluster-info]]
=== Cluster Info API
++++
<titleabbrev>Cluster Info</titleabbrev>
++++

Returns cluster information.

[[cluster-info-api-request]]
==== {api-request-title}

`GET /_info/<target>` +

[[cluster-info-api-prereqs]]
==== {api-prereq-title}

* If the {es} {security-features} are enabled, you must have the `monitor` or
`manage` <<privileges-list-cluster,cluster privilege>> to use this API.


[[cluster-info-api-desc]]
==== {api-description-title}

You can use the Cluster Info API to retrieve information of a cluster.


[[cluster-info-api-path-params]]
==== {api-path-parms-title}


`<target>`::
(Optional, string) Limits the information returned to the specific `target`.
A comma-separated list of the following options:
+
--
`_all`::
All the information available. Can not be mixed with other targets.

`http`::
HTTP connection information.

`ingest`::
Ingest information.

`thread_pool`::
Statistics about each thread pool, including current size, queue size and rejected tasks.
--

[role="child_attributes"]
[[cluster-info-api-response-body]]
==== {api-response-body-title}

`cluster_name`::
(string)
Name of the cluster. Based on the <<cluster-name>> setting.


[[cluster-info-api-response-body-http]]
`http`::
(object)
Contains http information for the cluster.
+
.Properties of `http`
[%collapsible%open]
======
`current_open`::
(integer)
Current number of open HTTP connections for the cluster.

`total_opened`::
(integer)
Total number of HTTP connections opened for the cluster.

`clients`::
(array of objects)
Information on current and recently-closed HTTP client connections.
Clients that have been closed longer than the <<http-settings,http.client_stats.closed_channels.max_age>>
setting will not be represented here.
+
.Properties of `clients`
[%collapsible%open]
=======
`id`::
(integer)
Unique ID for the HTTP client.

`agent`::
(string)
Reported agent for the HTTP client. If unavailable, this property is not
included in the response.

`local_address`::
(string)
Local address for the HTTP connection.

`remote_address`::
(string)
Remote address for the HTTP connection.

`last_uri`::
(string)
The URI of the client's most recent request.

`x_forwarded_for`::
(string)
Value from the client's `x-forwarded-for` HTTP header. If unavailable, this
property is not included in the response.

`x_opaque_id`::
(string)
Value from the client's `x-opaque-id` HTTP header. If unavailable, this property
is not included in the response.

`opened_time_millis`::
(integer)
Time at which the client opened the connection.

`closed_time_millis`::
(integer)
Time at which the client closed the connection if the connection is closed.

`last_request_time_millis`::
(integer)
Time of the most recent request from this client.

`request_count`::
(integer)
Number of requests from this client.

`request_size_bytes`::
(integer)
Cumulative size in bytes of all requests from this client.
=======
======


[[cluster-info-api-response-body-ingest]]
`ingest`::
(object)
Contains ingest information for the cluster.
+
.Properties of `ingest`
[%collapsible%open]
======
`total`::
(object)
Contains information about ingest operations for the cluster.
+
.Properties of `total`
[%collapsible%open]
=======
`count`::
(integer)
Total number of documents ingested across the cluster.

`time`::
(<<time-units,time value>>)
Total time spent preprocessing ingest documents across the cluster.

`time_in_millis`::
(integer)
Total time, in milliseconds, spent preprocessing ingest documents across the cluster.

`current`::
(integer)
Total number of documents currently being ingested.

`failed`::
(integer)
Total number of failed ingest operations across the cluster.
=======

`pipelines`::
(object)
Contains information about ingest pipelines for the cluster.
+
.Properties of `pipelines`
[%collapsible%open]
=======
`<pipeline_id>`::
(object)
Contains information about the ingest pipeline.
+
.Properties of `<pipeline_id>`
[%collapsible%open]
========
`count`::
(integer)
Number of documents preprocessed by the ingest pipeline.

`time`::
(<<time-units,time value>>)
Total time spent preprocessing documents in the ingest pipeline.

`time_in_millis`::
(integer)
Total time, in milliseconds, spent preprocessing documents in the ingest
pipeline.

`failed`::
(integer)
Total number of failed operations for the ingest pipeline.

`processors`::
(array of objects)
Contains information for the ingest processors for the ingest pipeline.
+
.Properties of `processors`
[%collapsible%open]
=========
`<processor>`::
(object)
Contains information for the ingest processor.
+
.Properties of `<processor>`
[%collapsible%open]
==========
`count`::
(integer)
Number of documents transformed by the processor.

`time`::
(<<time-units,time value>>)
Time spent by the processor transforming documents.

`time_in_millis`::
(integer)
Time, in milliseconds, spent by the processor transforming documents.

`current`::
(integer)
Number of documents currently being transformed by the processor.

`failed`::
(integer)
Number of failed operations for the processor.
==========
=========
========
=======
======


[[cluster-info-api-response-body-threadpool]]
`thread_pool`::
(object)
Contains information about the thread pools of the cluster.
+
.Properties of `thread_pool`
[%collapsible%open]
======
`<thread_pool_name>`::
(object)
Contains information about the thread pool of the cluster with name `<thread_pool_name>`.
+
.Properties of `<thread_pool_name>`
[%collapsible%open]
=======
`threads`::
(integer)
Number of threads in the thread pool.

`queue`::
(integer)
Number of tasks in queue for the thread pool.

`active`::
(integer)
Number of active threads in the thread pool.

`rejected`::
(integer)
Number of tasks rejected by the thread pool executor.

`largest`::
(integer)
Highest number of active threads in the thread pool.

`completed`::
(integer)
Number of tasks completed by the thread pool executor.
=======
======

[[cluster-info-api-example]]
==== {api-examples-title}

[source,console]
----
# returns all stats info of the cluster
GET /_info/_all

# returns the http info of the cluster
GET /_info/http

# returns the http info of the cluster
GET /_info/ingest

# returns the thread_pool info of the cluster
GET /_info/thread_pool

# returns the http and ingest info of the cluster
GET /_info/http,ingest
----