Fixed decideredit

This functionality is experimental and may be changed or removed completely in a future release. Elastic will take a best effort approach to fix any issues, but experimental features are not subject to the support SLA of official GA features.

The fixed decider is intended for testing only. Do not use this decider in production.

The fixed decider responds with a fixed required capacity. It is not enabled by default but can be enabled for any policy by explicitly configuring it.

Configuration settingsedit

(Optional, byte value) Required amount of node-level storage. Defaults to -1 (disabled).
(Optional, byte value) Required amount of node-level memory. Defaults to -1 (disabled).
(Optional, integer) Number of nodes to use when calculating capacity. Defaults to 1.


This example puts an autoscaling policy named my_autoscaling_policy, enabling and configuring the fixed decider.

PUT /_autoscaling/policy/my_autoscaling_policy
  "roles" : [ "data_hot" ],
  "deciders": {
    "fixed": {
      "storage": "1tb",
      "memory": "32gb",
      "nodes": 8

The API returns the following result:

  "acknowledged": true