[role="xpack"]
[testenv="basic"]
[[ilm-start]]
=== Start {ilm} API

[subs="attributes"]
++++
<titleabbrev>Start {ilm}</titleabbrev>
++++

Start the {ilm} ({ilm-init}) plugin.

==== Request

`POST /_ilm/start`

==== Description

Starts the {ilm-init} plugin if it is currently stopped. {ilm-init} is started
automatically when the cluster is formed. Restarting {ilm-init} is only
necessary if it has been stopped using the <<ilm-stop, Stop {ilm-init} API>>.

==== Request Parameters

include::{docdir}/rest-api/common-parms.asciidoc[tag=timeoutparms]

==== Authorization

You must have the `manage_ilm` cluster privilege to use this API.
For more information, see {stack-ov}/security-privileges.html[Security privileges].

==== Examples

The following example starts the ILM plugin.

//////////////////////////

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

PUT my_index

POST _ilm/stop
--------------------------------------------------

//////////////////////////

[source,console]
--------------------------------------------------
POST _ilm/start
--------------------------------------------------
// TEST[continued]

If the request succeeds, you receive the following result:

[source,console-result]
--------------------------------------------------
{
  "acknowledged": true
}
--------------------------------------------------