136 lines
4.3 KiB
Plaintext
136 lines
4.3 KiB
Plaintext
[[indices-open-close]]
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=== Open index API
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++++
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<titleabbrev>Open index</titleabbrev>
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++++
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Opens a closed index. For data streams, the API
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opens any closed backing indices.
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[source,console]
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--------------------------------------------------
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POST /twitter/_open
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--------------------------------------------------
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// TEST[setup:twitter]
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// TEST[s/^/POST \/twitter\/_close\n/]
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[[open-index-api-request]]
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==== {api-request-title}
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`POST /<target>/_open`
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[[open-index-api-desc]]
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==== {api-description-title}
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You can use the open index API to re-open closed indices. If the request targets
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a data stream, the request re-opens any of the stream's closed backing indices.
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// tag::closed-index[]
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A closed index is blocked for read/write operations and does not allow
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all operations that opened indices allow. It is not possible to index
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documents or to search for documents in a closed index. This allows
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closed indices to not have to maintain internal data structures for
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indexing or searching documents, resulting in a smaller overhead on
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the cluster.
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When opening or closing an index, the master is responsible for
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restarting the index shards to reflect the new state of the index.
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The shards will then go through the normal recovery process. The
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data of opened/closed indices is automatically replicated by the
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cluster to ensure that enough shard copies are safely kept around
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at all times.
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You can open and close multiple indices. An error is thrown
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if the request explicitly refers to a missing index. This behaviour can be
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disabled using the `ignore_unavailable=true` parameter.
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All indices can be opened or closed at once using `_all` as the index name
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or specifying patterns that identify them all (e.g. `*`).
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Identifying indices via wildcards or `_all` can be disabled by setting the
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`action.destructive_requires_name` flag in the config file to `true`.
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This setting can also be changed via the cluster update settings api.
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Closed indices consume a significant amount of disk-space which can cause
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problems in managed environments. Closing indices can be disabled via the cluster settings
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API by setting `cluster.indices.close.enable` to `false`. The default is `true`.
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The current write index on a data stream cannot be closed. In order to close
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the current write index, the data stream must first be
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<<rollover-data-stream-ex,rolled over>> so that a new write index is created
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and then the previous write index can be closed.
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// end::closed-index[]
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[[open-index-api-wait-for-active-shards]]
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===== Wait For active shards
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// tag::wait-for-active-shards[]
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Because opening or closing an index allocates its shards, the
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<<create-index-wait-for-active-shards,`wait_for_active_shards`>> setting on
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index creation applies to the `_open` and `_close` index actions as well.
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// end::wait-for-active-shards[]
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[[open-index-api-path-params]]
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==== {api-path-parms-title}
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`<target>`::
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(Optional, string)
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Comma-separated list or wildcard (`*`) expression of data streams, indices, and
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index aliases used to limit the request.
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+
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To target all data streams and indices, use `_all` or `*`.
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+
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To disallow use of `_all` or wildcard expressions,
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change the `action.destructive_requires_name` cluster setting to `true`.
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You can update this setting in the `elasticsearch.yml` file
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or using the <<cluster-update-settings,cluster update settings>> API.
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[[open-index-api-query-params]]
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==== {api-query-parms-title}
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=allow-no-indices]
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+
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Defaults to `true`.
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=expand-wildcards]
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+
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Defaults to `closed`.
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=index-ignore-unavailable]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=wait_for_active_shards]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=timeoutparms]
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[[open-index-api-example]]
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==== {api-examples-title}
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The following request re-opens a closed index named `my_index`.
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[source,console]
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--------------------------------------------------
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POST /my_index/_open
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--------------------------------------------------
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// TEST[s/^/PUT my_index\nPOST my_index\/_close\n/]
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The API returns the following response:
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[source,console-result]
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--------------------------------------------------
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{
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"acknowledged" : true,
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"shards_acknowledged" : true
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}
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--------------------------------------------------
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