CAT nodes
Introduced 1.0
The CAT nodes operation lists node-level information, including node roles and load metrics.
A few important node metrics are pid, name, cluster_manager, ip, port, version, build, jdk, along with disk, heap, ram, and file_desc.
Path and HTTP methods
GET _cat/nodes
Query parameters
All CAT nodes 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. |
| full_id | Boolean | If true, return the full node ID. If false, return the shortened node ID. Defaults to false. |
| cluster_manager_timeout | Time | The amount of time to wait for a connection to the cluster manager node. Default is 30 seconds. |
| time | Time | Specify the units for time. For example, 5d or 7h. For more information, see Supported units. |
| include_unloaded_segments | Boolean | Whether to include information from segments not loaded into memory. Default is false. |
Example request
The following example request lists node level information:
GET _cat/nodes?v
Example response
ip | heap.percent | ram.percent | cpu load_1m | load_5m | load_15m | node.role | node.roles | cluster_manager | name
10.11.1.225 | 31 | 32 | 0 | 0.00 | 0.00 | di | data,ingest,ml | - | data-e5b89ad7