[DOCS] Add verify snapshot repository API docs (#57253) (#57290)

Author: jrodewig

docs/reference/snapshot-restore/apis/put-repo-api.asciidoc

@@ -70,7 +70,7 @@ data nodes in the cluster. If `false`, this verification is skipped. Defaults to
 `true`.
 +
 You can manually perform this verification using the
-<<snapshots-repository-verification,verify snapshot repository API>>.
+<<verify-snapshot-repo-api,verify snapshot repository API>>.
 +
 IMPORTANT: You can also specify this value using the `verify` request body
 parameter. If both parameters are specified, only the query parameter is used.

docs/reference/snapshot-restore/apis/snapshot-restore-apis.asciidoc

@@ -20,9 +20,11 @@ content may not be included yet.
 * <<delete-snapshot-repo-api,Delete snapshot repository>>
 * <<get-snapshot-repo-api,Get snapshot repository>>
 * <<put-snapshot-repo-api,Put snapshot repository>>
+* <<verify-snapshot-repo-api,Verify snapshot repository>>
 
 
 include::clean-up-repo-api.asciidoc[]
 include::delete-repo-api.asciidoc[]
 include::get-repo-api.asciidoc[]
-include::put-repo-api.asciidoc[]
+include::put-repo-api.asciidoc[]
+include::verify-repo-api.asciidoc[]

docs/reference/snapshot-restore/apis/verify-repo-api.asciidoc

@@ -0,0 +1,94 @@
+[[verify-snapshot-repo-api]]
+=== Verify snapshot repository API
+++++
+<titleabbrev>Verify snapshot repository</titleabbrev>
+++++
+
+Verifies that a snapshot repository is functional.
+
+////
+[source,console]
+----
+PUT /_snapshot/my_repository
+{
+  "type": "fs",
+  "settings": {
+    "location": "my_backup_location"
+  }
+}
+----
+// TESTSETUP
+////
+
+[source,console]
+----
+POST /_snapshot/my_repository/_verify
+----
+
+[[verify-snapshot-repo-api-request]]
+==== {api-request-title}
+
+`POST /_snapshot/<repository>/_verify`
+
+[[verify-snapshot-repo-api-desc]]
+==== {api-description-title}
+
+By default, <<put-snapshot-repo-api,put snapshot repository API>> requests
+verify that a snapshot is functional on all master and data nodes in the
+cluster.
+
+You can skip this verification using the put snapshot repository API's `verify`
+parameter. You can then use the verify snapshot repository API to manually
+verify the repository.
+
+If verification is successful, the verify snapshot repository API returns a list
+of nodes connected to the snapshot repository. If verification failed, the API
+returns an error.
+
+[[verify-snapshot-repo-api-path-params]]
+==== {api-path-parms-title}
+
+`<repository>`::
+(Required, string)
+Name of the snapshot repository to verify.
+
+[[verify-snapshot-repo-api-query-params]]
+==== {api-query-parms-title}
+
+`master_timeout`::
+(Optional, <<time-units, time units>>) Specifies the period of time to wait for
+a connection to the master node. If no response is received before the timeout
+expires, the request fails and returns an error. Defaults to `30s`.
+
+`timeout`::
+(Optional, <<time-units, time units>>) Specifies the period of time to wait for
+a response. If no response is received before the timeout expires, the request
+fails and returns an error. Defaults to `30s`.
+
+[role="child_attributes"]
+[[verify-snapshot-repo-api-response-body]]
+==== {api-response-body-title}
+
+`nodes`::
+(object)
++
+.Properties of `nodes` objects
+[%collapsible%open]
+====
+`<node_id>`::
+(object)
+Contains information about a node connected to the snapshot repository.
++
+The key is the ID of the node.
++
+.Properties of `<node_id>`
+[%collapsible%open]
+=====
+`name`::
+(string)
+Human-readable name for the node.
++
+You can set this name using the <<node.name,`node.name`>> property in
+`elasticsearch.yml`. Defaults to the machine's hostname.
+=====
+====