CAT allocation
Introduced 1.0
The CAT allocation operation lists the allocation of disk space for indices and the number of shards on each node.
Example
GET _cat/allocation?v
To limit the information to a specific node, add the node name after your query:
GET _cat/allocation/<node_name>
If you want to get information for more than one node, separate the node names with commas:
GET _cat/allocation/node_name_1,node_name_2,node_name_3
Path and HTTP methods
GET _cat/allocation?v
GET _cat/allocation/<node_name>
URL parameters
All CAT allocation URL parameters are optional.
In addition to the common URL parameters, you can specify the following parameters:
| Parameter | Type | Description |
|---|---|---|
| bytes | Byte size | Specify the units for byte size. For example, 7kb or 6gb. For more information, see Supported units. |
| local | Boolean | Whether to return information from the local node only instead of from the cluster_manager node. Default is false. |
| cluster_manager_timeout | Time | The amount of time to wait for a connection to the cluster_manager node. Default is 30 seconds. |
Response
The following response shows that eight shards are allocated to each the two nodes available:
shards | disk.indices | disk.used | disk.avail | disk.total | disk.percent host | ip | node
8 | 989.4kb | 25.9gb | 32.4gb | 58.4gb | 44 172.18.0.4 | 172.18.0.4 | odfe-node1
8 | 962.4kb | 25.9gb | 32.4gb | 58.4gb | 44 172.18.0.3 | 172.18.0.3 | odfe-node2