OpenSearch/docs/reference/cat/recovery.asciidoc

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[[cat-recovery]]
=== cat recovery API
++++
<titleabbrev>cat recovery</titleabbrev>
++++
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Returns information about ongoing and completed shard recoveries,
similar to the <<indices-recovery, index recovery>> API.
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[[cat-recovery-api-request]]
==== {api-request-title}
`GET /_cat/recovery/<index>`
`GET /_cat/recovery`
[[cat-recovery-api-desc]]
==== {api-description-title}
The cat recovery API returns information about shard recoveries, both
ongoing and completed. It is a more compact view of the JSON
<<indices-recovery,index recovery>> API.
include::{es-repo-dir}/indices/recovery.asciidoc[tag=shard-recovery-desc]
[[cat-recovery-path-params]]
==== {api-path-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=index]
[[cat-recovery-query-params]]
==== {api-query-parms-title}
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=active-only]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=bytes]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=detailed]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=http-format]
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=index-query-parm]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=cat-s]
include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=time]
include::{es-repo-dir}/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
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[source,console]
----------------------------------------------------------------------------
GET _cat/recovery?v
----------------------------------------------------------------------------
// TEST[setup:twitter]
The API returns the following response:
Enforce that responses in docs are valid json (#26249) All of the snippets in our docs marked with `// TESTRESPONSE` are checked against the response from Elasticsearch but, due to the way they are implemented they are actually parsed as YAML instead of JSON. Luckilly, all valid JSON is valid YAML! Unfurtunately that means that invalid JSON has snuck into the exmples! This adds a step during the build to parse them as JSON and fail the build if they don't parse. But no! It isn't quite that simple. The displayed text of some of these responses looks like: ``` { ... "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` Note the `...` which isn't valid json but we like it anyway and want it in the output. We use substitution rules to convert the `...` into the response we expect. That yields a response that looks like: ``` { "took": $body.took,"timed_out": false,"_shards": $body._shards,"hits": $body.hits, "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` That is what the tests consume but it isn't valid JSON! Oh no! We don't want to go update all the substitution rules because that'd be huge and, ultimately, wouldn't buy much. So we quote the `$body.took` bits before parsing the JSON. Note the responses that we use for the `_cat` APIs are all converted into regexes and there is no expectation that they are valid JSON. Closes #26233
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[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,console]
----------------------------------------------------------------------------
GET _cat/recovery?v&h=i,s,t,ty,st,shost,thost,f,fp,b,bp
----------------------------------------------------------------------------
// TEST[setup:twitter]
The API returns the following response:
Enforce that responses in docs are valid json (#26249) All of the snippets in our docs marked with `// TESTRESPONSE` are checked against the response from Elasticsearch but, due to the way they are implemented they are actually parsed as YAML instead of JSON. Luckilly, all valid JSON is valid YAML! Unfurtunately that means that invalid JSON has snuck into the exmples! This adds a step during the build to parse them as JSON and fail the build if they don't parse. But no! It isn't quite that simple. The displayed text of some of these responses looks like: ``` { ... "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` Note the `...` which isn't valid json but we like it anyway and want it in the output. We use substitution rules to convert the `...` into the response we expect. That yields a response that looks like: ``` { "took": $body.took,"timed_out": false,"_shards": $body._shards,"hits": $body.hits, "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` That is what the tests consume but it isn't valid JSON! Oh no! We don't want to go update all the substitution rules because that'd be huge and, ultimately, wouldn't buy much. So we quote the `$body.took` bits before parsing the JSON. Note the responses that we use for the `_cat` APIs are all converted into regexes and there is no expectation that they are valid JSON. Closes #26233
2017-08-17 09:02:10 -04:00
[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.
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[source,console]
--------------------------------------------------------------------------------
GET _cat/recovery?v&h=i,s,t,ty,st,rep,snap,f,fp,b,bp
--------------------------------------------------------------------------------
// TEST[skip:no need to execute snapshot/restore here]
The API returns the following response with a recovery type of `snapshot`:
Enforce that responses in docs are valid json (#26249) All of the snippets in our docs marked with `// TESTRESPONSE` are checked against the response from Elasticsearch but, due to the way they are implemented they are actually parsed as YAML instead of JSON. Luckilly, all valid JSON is valid YAML! Unfurtunately that means that invalid JSON has snuck into the exmples! This adds a step during the build to parse them as JSON and fail the build if they don't parse. But no! It isn't quite that simple. The displayed text of some of these responses looks like: ``` { ... "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` Note the `...` which isn't valid json but we like it anyway and want it in the output. We use substitution rules to convert the `...` into the response we expect. That yields a response that looks like: ``` { "took": $body.took,"timed_out": false,"_shards": $body._shards,"hits": $body.hits, "aggregations": { "range": { "buckets": [ { "to": 1.4436576E12, "to_as_string": "10-2015", "doc_count": 7, "key": "*-10-2015" }, { "from": 1.4436576E12, "from_as_string": "10-2015", "doc_count": 0, "key": "10-2015-*" } ] } } } ``` That is what the tests consume but it isn't valid JSON! Oh no! We don't want to go update all the substitution rules because that'd be huge and, ultimately, wouldn't buy much. So we quote the `$body.took` bits before parsing the JSON. Note the responses that we use for the `_cat` APIs are all converted into regexes and there is no expectation that they are valid JSON. Closes #26233
2017-08-17 09:02:10 -04:00
[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]