Open index API
editOpen index API
editOpens a closed index. For data streams, the API opens any closed backing indices.
POST /my-index-000001/_open
Request
editPOST /<target>/_open
Prerequisites
edit-
If the Elasticsearch security features are enabled, you must have the
manage
index privilege for the target data stream, index, or alias.
Description
editYou can use the open index API to re-open closed indices. If the request targets a data stream, the request re-opens any of the stream’s closed backing indices.
A closed index is blocked for read/write operations and does not allow all operations that opened indices allow. It is not possible to index documents or to search for documents in a closed index. This allows closed indices to not have to maintain internal data structures for indexing or searching documents, resulting in a smaller overhead on the cluster.
When opening or closing an index, the master is responsible for restarting the index shards to reflect the new state of the index. The shards will then go through the normal recovery process. The data of opened/closed indices is automatically replicated by the cluster to ensure that enough shard copies are safely kept around at all times.
You can open and close multiple indices. An error is thrown
if the request explicitly refers to a missing index. This behaviour can be
disabled using the ignore_unavailable=true
parameter.
All indices can be opened or closed at once using _all
as the index name
or specifying patterns that identify them all (e.g. *
).
Identifying indices via wildcards or _all
can be disabled by setting the
action.destructive_requires_name
flag in the config file to true
.
This setting can also be changed via the cluster update settings api.
Closed indices consume a significant amount of disk-space which can cause
problems in managed environments. Closing indices can be disabled via the cluster settings
API by setting cluster.indices.close.enable
to false
. The default is true
.
Wait for active shards
editBecause opening or closing an index allocates its shards, the
wait_for_active_shards
setting on
index creation applies to the _open
and _close
index actions as well.
Path parameters
edit-
<target>
-
(Optional, string) Comma-separated list of data streams, indices, and aliases used to limit the request. Supports wildcards (
*
).To disallow use of
_all
or wildcard expressions, change theaction.destructive_requires_name
cluster setting totrue
. You can update this setting in theelasticsearch.yml
file or using the cluster update settings API.
Query parameters
edit-
allow_no_indices
-
(Optional, Boolean) If
false
, the request returns an error if any wildcard expression, index alias, or_all
value targets only missing or closed indices. This behavior applies even if the request targets other open indices. For example, a request targetingfoo*,bar*
returns an error if an index starts withfoo
but no index starts withbar
.Defaults to
true
. -
expand_wildcards
-
(Optional, string) Type of index that wildcard patterns can match. If the request can target data streams, this argument determines whether wildcard expressions match hidden data streams. Supports comma-separated values, such as
open,hidden
. Valid values are:-
all
- Match any data stream or index, including hidden ones.
-
open
- Match open, non-hidden indices. Also matches any non-hidden data stream.
-
closed
- Match closed, non-hidden indices. Also matches any non-hidden data stream. Data streams cannot be closed.
-
hidden
-
Match hidden data streams and hidden indices. Must be combined with
open
,closed
, or both. -
none
- Wildcard patterns are not accepted.
Defaults to
closed
. -
-
ignore_unavailable
-
(Optional, Boolean) If
false
, the request returns an error if it targets a missing or closed index. Defaults tofalse
. -
wait_for_active_shards
-
(Optional, string) The number of shard copies that must be active before proceeding with the operation. Set to
all
or any positive integer up to the total number of shards in the index (number_of_replicas+1
). Default: 1, the primary shard.See Active shards.
-
master_timeout
-
(Optional, time units)
Period to wait for a connection to the master node. If no response is received
before the timeout expires, the request fails and returns an error. Defaults to
30s
. -
timeout
-
(Optional, time units)
Period to wait for a response. If no response is received before the timeout
expires, the request fails and returns an error. Defaults to
30s
.
Examples
editThe following request re-opens a closed index named my-index-000001
.
POST /my-index-000001/_open
The API returns the following response:
{ "acknowledged" : true, "shards_acknowledged" : true }