› › ›

Fixed decider

This functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview 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 settings

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

Examples

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
}

© 2023-2025 Elasticsearch
As of September 2024, Elasticsearch is available under a choice of three licenses: the Server Side Public License (SSPL), the Elastic License, or the AGPLv3 (OSI approved).
Elasticsearch and the Elasticsearch logo are trademarks of Elasticsearch B.V., registered in the U.S. and in other countries.
https://www.elastic.co/guide/en/elasticsearch/reference/7.17/autoscaling-fixed-decider.html