Index shard stores APIedit

Retrieves store information about replica shards in one or more indices. For data streams, the API retrieves store information for the stream’s backing indices.

GET /my-index-000001/_shard_stores

Requestedit

GET /<target>/_shard_stores

GET /_shard_stores

Descriptionedit

The index shard stores API returns the following information:

  • The node on which each replica shard exists
  • Allocation ID for each replica shard
  • Unique ID for each replica shard
  • Any errors encountered while opening the shard index or from an earlier failure

By default, the API only returns store information for primary shards that are unassigned or have one or more unassigned replica shards.

Path parametersedit

<target>

(Optional, string) Comma-separated list of data streams, indices, and index aliases used to limit the request. Wildcard expressions (*) are supported.

To target all data streams and indices in a cluster, omit this parameter or use _all or *.

Query parametersedit

allow_no_indices

(Optional, boolean) If false, the request returns an error when a wildcard expression, index alias, or _all value targets only missing or closed indices.

Defaults to true.

expand_wildcards

(Optional, string) Controls what kind of indices that wildcard expressions can expand to. Multiple values are accepted when separated by a comma, as in open,hidden. Valid values are:

all
Expand to open and closed indices, including hidden indices.
open
Expand only to open indices.
closed
Expand only to closed indices.
hidden
Expansion of wildcards will include hidden indices. Must be combined with open, closed, or both.
none
Wildcard expressions are not accepted.

Defaults to open.

ignore_unavailable
(Optional, boolean) If true, missing or closed indices are not included in the response. Defaults to false.
status

(Optional, string) Comma-separated list of shard health statuses used to limit the request.

Valid values include:

green
The primary shard and all replica shards are assigned.
yellow
One or more replica shards are unassigned.
red
The primary shard is unassigned.
all
Return all shards, regardless of health status.

Defaults to yellow,red.

Examplesedit

Get shard store information for a specific data stream or indexedit

GET /test/_shard_stores

Get shard store information for several data streams and indicesedit

GET /test1,test2/_shard_stores

Get shard store information for all data streams and indicesedit

GET /_shard_stores

Get shard store information based on cluster healthedit

You can use the status query parameter to limit returned information based on shard health.

The following request only returns information for assigned primary and replica shards.

GET /_shard_stores?status=green

The API returns the following response:

{
  "indices": {
    "my-index-00001": {
      "shards": {
        "0": {                                          
          "stores": [                                   
            {
            "sPa3OgxLSYGvQ4oPs-Tajw": {                 
              "name": "node_t0",
              "ephemeral_id": "9NlXRFGCT1m8tkvYCMK-8A",
              "transport_address": "local[1]",
              "attributes": {}
            },
            "allocation_id": "2iNySv_OQVePRX-yaRH_lQ",  
            "allocation": "primary|replica|unused"      
            "store_exception": ...                      
            }
          ]
        }
      }
    }
  }
}

The key is the corresponding shard id for the store information

A list of store information for all copies of the shard

The node information that hosts a copy of the store, the key is the unique node id.

The allocation id of the store copy

The status of the store copy, whether it is used as a primary, replica or not used at all

Any exception encountered while opening the shard index or from earlier engine failure