[[reference-ilm-migrate_to_data_tiers]]

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||        ██████╗ ███████╗ █████╗ ██████╗ ███╗   ███╗███████╗                                                            ||
||        ██╔══██╗██╔════╝██╔══██╗██╔══██╗████╗ ████║██╔════╝                                                            ||
||        ██████╔╝█████╗  ███████║██║  ██║██╔████╔██║█████╗                                                              ||
||        ██╔══██╗██╔══╝  ██╔══██║██║  ██║██║╚██╔╝██║██╔══╝                                                              ||
||        ██║  ██║███████╗██║  ██║██████╔╝██║ ╚═╝ ██║███████╗                                                            ||
||        ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═════╝ ╚═╝     ╚═╝╚══════╝                                                            ||
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||    This file is autogenerated, DO NOT send pull requests that changes this file directly.                             ||
||    You should update the script that does the generation, which can be found in:                                      ||
||    https://github.com/elastic/elastic-client-generator-js                                                             ||
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||    You can run the script with the following command:                                                                 ||
||       npm run elasticsearch -- --version <version>                                                                    ||
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[discrete]
[[client.ilm.migrateToDataTiers]]
=== client.ilm.migrateToDataTiers

Switches the indices, ILM policies, and legacy, composable and component templates from using custom node attributes and attribute-based allocation filters to using data tiers, and optionally deletes one legacy index template.+ Using node roles enables ILM to automatically move the indices between data tiers.

{ref}/ilm-migrate-to-data-tiers.html[{es} documentation]

[discrete]
==== Function signature

[source,ts]
----
(IlmMigrateToDataTiersRequest, options?): Promise<IlmMigrateToDataTiersResponse>
----

[discrete]
==== Request

[pass]
++++
<pre>
++++
interface IlmMigrateToDataTiersRequest extends <<RequestBase>> {
  dry_run?: boolean
  legacy_template_to_delete?: string
  node_attribute?: string
}

[pass]
++++
</pre>
++++
[discrete]
==== Response

[pass]
++++
<pre>
++++
interface IlmMigrateToDataTiersResponse {
  dry_run: boolean
  removed_legacy_template: string
  migrated_ilm_policies: string[]
  migrated_indices: <<Indices>>
  migrated_legacy_templates: string[]
  migrated_composable_templates: string[]
  migrated_component_templates: string[]
}

[pass]
++++
</pre>
++++
