OpenSearch/docs/reference/cat/allocation.asciidoc

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[[cat-allocation]]
=== cat allocation API
++++
<titleabbrev>cat allocation</titleabbrev>
++++
Provides a snapshot of the number of shards allocated to each data node
and their disk space.
[[cat-allocation-api-request]]
==== {api-request-title}
`GET /_cat/allocation/<node_id>`
`GET /_cat/allocation`
[[cat-allocation-api-path-params]]
==== {api-path-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=node-id]
[[cat-allocation-api-query-params]]
==== {api-query-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bytes]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=http-format]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=local]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=master-timeout]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=cat-h]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=help]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=cat-s]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=cat-v]
[[cat-allocation-api-example]]
==== {api-examples-title}
[source,console]
--------------------------------------------------
GET /_cat/allocation?v
--------------------------------------------------
// TEST[s/^/PUT test\n{"settings": {"number_of_replicas": 0}}\n/]
The API returns the following response:
[source,txt]
--------------------------------------------------
shards disk.indices disk.used disk.avail disk.total disk.percent host ip node
1 260b 47.3gb 43.4gb 100.7gb 46 127.0.0.1 127.0.0.1 CSUXak2
--------------------------------------------------
// TESTRESPONSE[s/\d+(\.\d+)?[tgmk]?b/\\d+(\\.\\d+)?[tgmk]?b/ s/46/\\d+/]
// TESTRESPONSE[s/CSUXak2/.+/ non_json]
This response shows a single shard is allocated to the one node available.