opensearch-docs-cn/_api-reference/index-apis/update-settings.md

layout	title	parent	nav_order
default	Update settings	Index APIs	120

Update settings

Introduced 1.0 {: .label .label-purple }

You can use the update settings API operation to update index-level settings. You can change dynamic index settings at any time, but static settings cannot be changed after index creation. For more information about static and dynamic index settings, see Create index.

Aside from the static and dynamic index settings, you can also update individual plugins' settings. To get the full list of updatable settings, run GET <target-index>/_settings?include_defaults=true.

Example

PUT /sample-index1/_settings
{
  "index.plugins.index_state_management.rollover_skip": true,
  "index": {
    "number_of_replicas": 4
  }
}

Path and HTTP methods

PUT /<target-index>/_settings

URL parameters

All update settings parameters are optional.

Parameter	Data Type	Description
allow_no_indices	Boolean	Whether to ignore wildcards that don’t match any indexes. Default is true.
expand_wildcards	String	Expands wildcard expressions to different indexes. Combine multiple values with commas. Available values are all (match all indexes), open (match open indexes), closed (match closed indexes), hidden (match hidden indexes), and none (do not accept wildcard expressions), which must be used with open, closed, or both. Default is open.
flat_settings	Boolean	Whether to return settings in the flat form, which can improve readability, especially for heavily nested settings. For example, the flat form of “index”: { “creation_date”: “123456789” } is “index.creation_date”: “123456789”.
ignore_unavailable	Boolean	If true, OpenSearch does not include missing or closed indexes in the response.
preserve_existing	Boolean	Whether to preserve existing index settings. Default is false.
master_timeout	Time	How long to wait for a connection to the master node. Default is 30s.
timeout	Time	How long to wait for a connection to return. Default is 30s.

Request body

The request body must all of the index settings that you want to update.

{
  "index.plugins.index_state_management.rollover_skip": true,
  "index": {
    "number_of_replicas": 4
  }
}

Response

{
    "acknowledged": true
}