[[cat-recovery]]
=== cat recovery API
++++
<titleabbrev>cat recovery</titleabbrev>
++++

Returns information about ongoing and completed index shard recoveries, similar
to the <<indices-recovery, indices recovery>> API.


[[cat-recovery-api-request]]
==== {api-request-title}

`GET /_cat/recovery/{index}`


[[cat-recovery-api-desc]]
==== {api-description-title}

The cat recovery API returns information about index shard recoveries, both
ongoing and completed. It is a more compact view of the JSON
<<indices-recovery,indices recovery>> API.

A recovery event occurs anytime an index shard moves to a different node in the
cluster. This can happen during a snapshot recovery, a change in replication
level, node failure, or on node startup. This last type is called a local store
recovery and is the normal way for shards to be loaded from disk when a node
starts up.


[[cat-recovery-path-params]]
==== {api-path-parms-title}

include::{docdir}/rest-api/common-parms.asciidoc[tag=index]


[[cat-recovery-query-params]]
==== {api-query-parms-title}

include::{docdir}/rest-api/common-parms.asciidoc[tag=bytes]

include::{docdir}/rest-api/common-parms.asciidoc[tag=http-format]

include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-h]

include::{docdir}/rest-api/common-parms.asciidoc[tag=help]

include::{docdir}/rest-api/common-parms.asciidoc[tag=local]

include::{docdir}/rest-api/common-parms.asciidoc[tag=master-timeout]

include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-s]

include::{docdir}/rest-api/common-parms.asciidoc[tag=cat-v]


[[cat-recovery-api-example]]
==== {api-examples-title}

[[cat-recovery-api-ex-dead]]
===== Example with no ongoing recoveries

[source,js]
----------------------------------------------------------------------------
GET _cat/recovery?v
----------------------------------------------------------------------------
// CONSOLE
// TEST[setup:twitter]

The API returns the following response:

[source,txt]
---------------------------------------------------------------------------
index   shard time type  stage source_host source_node target_host target_node repository snapshot files files_recovered files_percent files_total bytes bytes_recovered bytes_percent bytes_total translog_ops translog_ops_recovered translog_ops_percent
twitter 0     13ms store done  n/a         n/a         127.0.0.1   node-0      n/a        n/a      0     0               100%          13          0     0               100%          9928        0            0                      100.0%
---------------------------------------------------------------------------
// TESTRESPONSE[s/store/empty_store/]
// TESTRESPONSE[s/100%/0.0%/]
// TESTRESPONSE[s/9928/0/]
// TESTRESPONSE[s/13ms/[0-9.]+m?s/]
// TESTRESPONSE[s/13/\\d+/ non_json]

In this example response, the source and target nodes are the same because the
recovery type is `store`, meaning they were read from local storage on node
start.

[[cat-recovery-api-ex-live]]
===== Example with a live shard recovery

By increasing the replica count of an index and bringing another node online to
host the replicas, you can retrieve information about an ongoing recovery.

[source,js]
----------------------------------------------------------------------------
GET _cat/recovery?v&h=i,s,t,ty,st,shost,thost,f,fp,b,bp
----------------------------------------------------------------------------
// CONSOLE
// TEST[setup:twitter]

The API returns the following response:

[source,txt]
----------------------------------------------------------------------------
i       s t      ty   st    shost       thost       f     fp      b bp
twitter 0 1252ms peer done  192.168.1.1 192.168.1.2 0     100.0%  0 100.0%
----------------------------------------------------------------------------
// TESTRESPONSE[s/peer/empty_store/]
// TESTRESPONSE[s/192.168.1.2/127.0.0.1/]
// TESTRESPONSE[s/192.168.1.1/n\/a/]
// TESTRESPONSE[s/100.0%/0.0%/]
// TESTRESPONSE[s/1252ms/[0-9.]+m?s/ non_json]

In this example response, the recovery type is `peer`, meaning the shard
recovered from another node. The returned files and bytes are real-time
measurements.

[[cat-recovery-api-ex-snapshot]]
===== Example with a snapshot recovery

You can restore backups of an index using the <<modules-snapshots,snapshot and
restore>> API. You can use the cat recovery API retrieve information about a
snapshot recovery.

[source,js]
--------------------------------------------------------------------------------
GET _cat/recovery?v&h=i,s,t,ty,st,rep,snap,f,fp,b,bp
--------------------------------------------------------------------------------
// CONSOLE
// TEST[skip:no need to execute snapshot/restore here]

The API returns the following response with a recovery type of `snapshot`:

[source,txt]
--------------------------------------------------------------------------------
i       s t      ty       st    rep     snap   f  fp   b     bp
twitter 0 1978ms snapshot done  twitter snap_1 79 8.0% 12086 9.0%
--------------------------------------------------------------------------------
// TESTRESPONSE[non_json]