elasticsearch/docs/java-rest/high-level/miscellaneous/main.asciidoc

[[java-rest-high-main]]
=== Info API

[[java-rest-high-main-request]]
==== Execution

Cluster information can be retrieved using the `info()` method:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MiscellaneousDocumentationIT.java[main-execute]
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[[java-rest-high-main-response]]
==== Response

The returned `MainResponse` provides various kinds of information about the cluster:

["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests}/MiscellaneousDocumentationIT.java[main-response]
--------------------------------------------------
<1> Retrieve the name of the cluster as a `ClusterName`
<2> Retrieve the unique identifier of the cluster
<3> Retrieve the name of the node the request has been executed on
<4> Retrieve the version of the node the request has been executed on
<5> Retrieve the build information of the node the request has been executed on