[role="xpack"]
[testenv="basic"]
[[ilm-put-lifecycle]]
=== Put Lifecycle Policy API
++++
<titleabbrev>Put Policy</titleabbrev>
++++

Creates or updates an ILM Policy

==== Request

`PUT _ilm/<policy>`

==== Description

This API creates a new Lifecycle Policy, or updates an existing one with the same
identifier. Each call will replace the existing policy and increment the `version`
associated with the policy.

NOTE: The `version` is only for informational purposes. Only the latest version
of the policy is stored.

==== Path Parameters

`policy` (required)::
  (string) Identifier for the policy.

==== Request Parameters

`timeout`::
  (time units) Specifies the period of time to wait for the completion of the 
  PUT operation. When this period of time elapses, the API fails and returns
  an error. The default value is `30s`. For more information about time units, 
  see <<time-units>>.

`master_timeout`::
  (time units) Specifies the period of time to wait for the connection with master.
  When this period of time elapses, the API fails and returns an error.
  The default value is `30s`. For more information about time units, see <<time-units>>.


==== Examples

The following example creates a new policy named `my_policy`:

[source,js]
--------------------------------------------------
PUT _ilm/my_policy
{
  "policy": {
    "phases": {
      "warm": {
        "min_age": "10d",
        "actions": {
          "forcemerge": {
            "max_num_segments": 1
          }
        }
      },
      "delete": {
        "min_age": "30d",
        "actions": {
          "delete": {}
        }
      }
    }
  }
}
--------------------------------------------------
// CONSOLE
// TEST

If the request does not encounter errors, you receive the following result:
[source,js]
----
{
  "acknowledged": true
}
----
// CONSOLE
// TESTRESPONSE