You're viewing version 2.16 of the OpenSearch documentation. This version is no longer maintained. For the latest version, see the current documentation. For information about OpenSearch version maintenance, see Release Schedule and Maintenance Policy.
Blocks
Introduced 1.0
Use the Blocks API to limit certain operations on a specified index. Different types of blocks allow you to restrict index write, read, or metadata operations. For example, adding a write
block through the API ensures that all index shards have properly accounted for the block before returning a successful response. Any in-flight write operations to the index must be complete before the write
block takes effect.
Path and HTTP methods
PUT /<index>/_block/<block>
Path parameters
Parameter | Data type | Description |
---|---|---|
index | String | A comma-delimited list of index names. Wildcard expressions (* ) are supported. To target all data streams and indexes in a cluster, use _all or * . Optional. |
<block> | String | Specifies the type of block to apply to the index. Valid values are: metadata : Disables all metadata changes, such as closing the index. read : Disables any read operations. read_only : Disables any write operations and metadata changes. write : Disables write operations. However, metadata changes are still allowed. |
Query parameters
The following table lists the available query parameters. All query parameters are optional.
Parameter | Data type | Description |
---|---|---|
ignore_unavailable | Boolean | When false , the request returns an error when it targets a missing or closed index. Default is false . |
allow_no_indices | Boolean | When false , the Refresh Index API returns an error when a wildcard expression, index alias, or _all targets only closed or missing indexes, even when the request is made against open indexes. Default is true . |
expand_wildcards | String | The type of index that the wildcard patterns can match. If the request targets data streams, this argument determines whether the wildcard expressions match any hidden data streams. Supports comma-separated values, such as open,hidden . Valid values are all , open , closed , hidden , and none . |
cluster_manager_timeout | Time | The amount of time to wait for a connection to the cluster manager node. Default is 30s . |
timeout | Time | The amount of time to wait for the request to return. Default is 30s . |
Example request
The following example request disables any write
operations made to the test index:
PUT /test-index/_block/write
Example response
{
"acknowledged" : true,
"shards_acknowledged" : true,
"indices" : [ {
"name" : "test-index",
"blocked" : true
} ]
}