[role="xpack"]
[testenv="basic"]
[[upgrade-transforms]]
= Upgrade {transform} API

[subs="attributes"]
++++
<titleabbrev>Upgrade {transform}</titleabbrev>
++++

Upgrades all {transform}s.

[[upgrade-transforms-request]]
== {api-request-title}

`POST _transform/_upgrade`

[[upgrade-transforms-prereqs]]
== {api-prereq-title}

Requires the following privileges:

* cluster: `manage_transform` (the `transform_admin` built-in role grants this
  privilege)
* source indices: `read`, `view_index_metadata`
* destination index: `read`, `index`.


[[upgrade-transforms-desc]]
== {api-description-title}

This API upgrades all existing {transform}s.

[[upgrade-transforms-query-parms]]
== {api-query-parms-title}

`dry_run`::
  (Optional, Boolean) When `true`, only checks for updates but does not execute them.

[[upgrade-transforms-example]]
== {api-examples-title}

[source,console]
--------------------------------------------------
POST _transform/_upgrade
--------------------------------------------------
// TEST[setup:simple_kibana_continuous_pivot]

When all {transform}s are upgraded, you receive a summary:

[source,console-result]
----
{
  "no_action": 1
}
----
// TESTRESPONSE[s/"no_action" : 1/"no_action" : $body.no_action/]