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cat task management API

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cat task management API

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The cat task management API is new and should still be considered a beta feature. The API may change in ways that are not backwards compatible.

Returns information about tasks currently executing in the cluster, similar to the task management API.

Request

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GET /_cat/tasks

Description

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The cat task management API returns information about tasks currently executing on one or more nodes in the cluster. It is a more compact view of the JSON task management API.

Query parameters

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actions

(Optional, string) Comma-separated list or wildcard expression of actions used to limit the request.

Omit this parameter to return all actions.

detailed

(Optional, boolean) If true, the response includes detailed information about shard recoveries. Defaults to false.

format

(Optional, string) Short version of the HTTP accept header. Valid values include JSON, YAML, etc.

group_by

(Optional, string) Key used to group tasks in the response.

Possible values are:

nodes: (Default) Node ID
parents: Parent task ID
none: Do not group tasks.

h

(Optional, string) Comma-separated list of column names to display.

help

(Optional, boolean) If true, the response includes help information. Defaults to false.

node_id

(Optional, string) Comma-separated list of node IDs or names used to limit returned information.

parent_task_id

(Optional, string) Parent task ID used to limit returned information.

To return all tasks, omit this parameter or use a value of -1.

s

(Optional, string) Comma-separated list of column names or column aliases used to sort the response.

time

(Optional, time units) Unit used to display time values.

wait_for_completion

(Optional, boolean) If true, the request blocks until the operation is complete. Defaults to true.

v

(Optional, boolean) If true, the response includes column headings. Defaults to false.

Response codes

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404 (Missing resources): If <task_id> is specified but not found, this code indicates that there are no resources that match the request.

Examples

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GET _cat/tasks?v

The API returns the following response:

action                         task_id                    parent_task_id             type      start_time    timestamp running_time ip             node
cluster:monitor/tasks/lists[n] oTUltX4IQMOUUVeiohTt8A:124 oTUltX4IQMOUUVeiohTt8A:123 direct    1458585884904 01:48:24  44.1micros   127.0.0.1:9300 oTUltX4IQMOUUVeiohTt8A
cluster:monitor/tasks/lists    oTUltX4IQMOUUVeiohTt8A:123 -                          transport 1458585884904 01:48:24  186.2micros  127.0.0.1:9300 oTUltX4IQMOUUVeiohTt8A

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