# `ClusterStatsClusterIndicesShards` [interface-ClusterStatsClusterIndicesShards]

| Name | Type | Description |
| - | - | - |
| `index` | [ClusterStatsClusterIndicesShardsIndex](./ClusterStatsClusterIndicesShardsIndex.md) | Contains statistics about shards assigned to selected nodes. |
| `primaries` | [double](./double.md) | Number of primary shards assigned to selected nodes. |
| `replication` | [double](./double.md) | Ratio of replica shards to primary shards across all selected nodes. |
| `total` | [double](./double.md) | Total number of shards assigned to selected nodes. |