elasticsearch/docs/reference/ingest/processors/set.asciidoc

[[set-options]]
.Set Options
[options="header"]
|======
| Name       | Required  | Default  | Description
| `field` | yes       | -        | The field to insert, upsert, or update. Supports <<accessing-template-fields,template snippets>>.
| `value` | yes       | -        | The value to be set for the field. Supports <<accessing-template-fields,template snippets>>.
| `override` | no        | true     | If processor will update fields with pre-existing non-null-valued field. When set to `false`, such fields will not be touched.
include::common-options.asciidoc[]
|======

[source,js]
--------------------------------------------------
{
  "set": {
    "field": "host.os.name",
    "value": "{{os}}"
  }
}
--------------------------------------------------
// NOTCONSOLE