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c8fb9aad40
This commit adds some per-index statistics to the `SnapshotInfo` blob: - number of shards - total size in bytes - maximum number of segments per shard It also exposes these statistics in the get snapshot API.
292 lines
8.1 KiB
Text
292 lines
8.1 KiB
Text
[[get-snapshot-api]]
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=== Get snapshot API
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++++
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<titleabbrev>Get snapshot</titleabbrev>
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++++
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Retrieves information about one or more snapshots.
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////
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[source,console]
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----
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PUT /_snapshot/my_repository
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{
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"type": "fs",
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"settings": {
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"location": "my_backup_location"
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}
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}
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PUT /_snapshot/my_repository/my_snapshot?wait_for_completion=true
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PUT /_snapshot/my_repository/snapshot_2?wait_for_completion=true
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----
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// TESTSETUP
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////
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[source,console]
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----
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GET /_snapshot/my_repository/my_snapshot
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----
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[[get-snapshot-api-request]]
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==== {api-request-title}
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`GET /_snapshot/<repository>/<snapshot>`
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[[get-snapshot-api-prereqs]]
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==== {api-prereq-title}
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* If the {es} {security-features} are enabled, you must have the
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`monitor_snapshot`, `create_snapshot`, or `manage`
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<<privileges-list-cluster,cluster privilege>> to use this API.
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[[get-snapshot-api-desc]]
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==== {api-description-title}
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Use the get snapshot API to return information about one or more snapshots, including:
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* Start and end time values
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* Version of {es} that created the snapshot
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* List of included indices
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* Current state of the snapshot
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* List of failures that occurred during the snapshot
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[[get-snapshot-api-path-params]]
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==== {api-path-parms-title}
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`<repository>`::
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(Required, string)
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Comma-separated list of snapshot repository names used to limit the request.
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Wildcard (`*`) expressions are supported.
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+
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To get information about all snapshot repositories registered in the
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cluster, omit this parameter or use `*` or `_all`.
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`<snapshot>`::
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(Required, string)
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Comma-separated list of snapshot names to retrieve. Also accepts wildcards (`*`).
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+
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* To get information about all snapshots in a registered repository, use a wildcard (`*`) or `_all`.
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* To get information about any snapshots that are currently running, use `_current`.
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+
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NOTE: Using `_all` in a request fails if any snapshots are unavailable.
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Set <<get-snapshot-api-ignore-unavailable,`ignore_unavailable`>> to `true` to return only available snapshots.
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[role="child_attributes"]
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[[get-snapshot-api-request-body]]
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==== {api-request-body-title}
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[[get-snapshot-api-ignore-unavailable]]
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`ignore_unavailable`::
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(Optional, Boolean)
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If `false`, the request returns an error for any snapshots that are unavailable. Defaults to `false`.
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+
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If `true`, the request ignores snapshots that are unavailable, such as those that are corrupted or temporarily cannot be returned.
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`verbose`::
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(Optional, Boolean)
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If `true`, returns additional information about each snapshot such as the
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version of Elasticsearch which took the snapshot, the start and end times of
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the snapshot, and the number of shards snapshotted. Defaults to `true`. If
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`false`, omits the additional information.
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`index_details`::
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(Optional, Boolean)
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If `true`, returns additional information about each index in the snapshot
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comprising the number of shards in the index, the total size of the index in
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bytes, and the maximum number of segments per shard in the index. Defaults to
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`false`, meaning that this information is omitted.
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[role="child_attributes"]
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[[get-snapshot-api-response-body]]
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==== {api-response-body-title}
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`snapshot`::
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(string)
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Name of the snapshot.
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`uuid`::
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(string)
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Universally unique identifier (UUID) of the snapshot.
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`version_id`::
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(int)
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Build ID of the {es} version used to create the snapshot.
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`version`::
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(float)
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{es} version used to create the snapshot.
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`indices`::
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(array)
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List of indices included in the snapshot.
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`index_details`::
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(object)
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Details of each index in the snapshot, keyed by index name. Only present if the
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`?index_details` query parameter is set, and only contains details for indices
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that were completely snapshotted in a sufficiently recent version of {es}.
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+
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.Properties of `index_details`
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[%collapsible%open]
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====
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`shard_count`::
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(integer)
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Number of shards in this index.
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`size`::
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(string)
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Total size of all shards in this index. Only present if the `?human` query
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paramter is set.
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`size_in_bytes`::
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(long)
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Total size of all shards in this index, in bytes.
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`max_segments_per_shard`::
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(integer)
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Maximum number of segments per shard in this index snapshot.
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====
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`data_streams`::
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(array)
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List of <<data-streams,data streams>> included in the snapshot.
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`include_global_state`::
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(Boolean)
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Indicates whether the current cluster state is included in the snapshot.
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[[get-snapshot-api-feature-states]]
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`feature_states`::
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(array)
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List of feature states which were included when the snapshot was taken,
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including the list of system indices included as part of the feature state. The
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`feature_name` field of each can be used in the `feature_states` parameter when
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restoring the snapshot to restore a subset of feature states. Only present if
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the snapshot includes one or more feature states.
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`start_time`::
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(string)
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Date timestamp of when the snapshot creation process started.
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`start_time_in_millis`::
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(long)
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The time, in milliseconds, when the snapshot creation process started.
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`end_time`::
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(string)
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Date timestamp of when the snapshot creation process ended.
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`end_time_in_millis`::
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(long)
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The time, in milliseconds, when the snapshot creation process ended.
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`duration_in_millis`::
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(long)
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How long, in milliseconds, it took to create the snapshot.
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[[get-snapshot-api-response-failures]]
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`failures`::
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(array)
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Lists any failures that occurred when creating the snapshot.
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`shards`::
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(object)
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Contains a count of shards in the snapshot.
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+
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.Properties of `shards`
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[%collapsible%open]
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====
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`total`::
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(integer)
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Total number of shards included in the snapshot.
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`successful`::
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(integer)
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Number of shards that were successfully included in the snapshot.
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`failed`::
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(integer)
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Number of shards that failed to be included in the snapshot.
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====
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`state`::
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+
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--
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(string)
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The snapshot `state` can be one of the following values:
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.Values for `state`
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[%collapsible%open]
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====
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`IN_PROGRESS`::
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The snapshot is currently running.
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`SUCCESS`::
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The snapshot finished and all shards were stored successfully.
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`FAILED`::
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The snapshot finished with an error and failed to store any data.
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`PARTIAL`::
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The global cluster state was stored, but data of at least one shard was not stored successfully.
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The <<get-snapshot-api-response-failures,`failures`>> section of the response contains more detailed information about shards
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that were not processed correctly.
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====
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--
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[[get-snapshot-api-example]]
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==== {api-examples-title}
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The following request returns information for `snapshot_2` in the `my_repository` repository.
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[source,console]
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----
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GET /_snapshot/my_repository/snapshot_2
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----
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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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"responses": [
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{
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"repository": "my_repository",
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"snapshots": [
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{
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"snapshot": "snapshot_2",
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"uuid": "vdRctLCxSketdKb54xw67g",
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"version_id": <version_id>,
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"version": <version>,
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"indices": [],
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"data_streams": [],
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"feature_states": [],
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"include_global_state": true,
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"state": "SUCCESS",
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"start_time": "2020-07-06T21:55:18.129Z",
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"start_time_in_millis": 1593093628850,
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"end_time": "2020-07-06T21:55:18.129Z",
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"end_time_in_millis": 1593094752018,
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"duration_in_millis": 0,
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"failures": [],
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"shards": {
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"total": 0,
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"failed": 0,
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"successful": 0
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}
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}
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]
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}
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]
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}
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----
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// TESTRESPONSE[s/"uuid": "vdRctLCxSketdKb54xw67g"/"uuid": $body.responses.0.snapshots.0.uuid/]
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// TESTRESPONSE[s/"version_id": <version_id>/"version_id": $body.responses.0.snapshots.0.version_id/]
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// TESTRESPONSE[s/"version": <version>/"version": $body.responses.0.snapshots.0.version/]
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// TESTRESPONSE[s/"start_time": "2020-07-06T21:55:18.129Z"/"start_time": $body.responses.0.snapshots.0.start_time/]
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// TESTRESPONSE[s/"start_time_in_millis": 1593093628850/"start_time_in_millis": $body.responses.0.snapshots.0.start_time_in_millis/]
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// TESTRESPONSE[s/"end_time": "2020-07-06T21:55:18.129Z"/"end_time": $body.responses.0.snapshots.0.end_time/]
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// TESTRESPONSE[s/"end_time_in_millis": 1593094752018/"end_time_in_millis": $body.responses.0.snapshots.0.end_time_in_millis/]
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// TESTRESPONSE[s/"duration_in_millis": 0/"duration_in_millis": $body.responses.0.snapshots.0.duration_in_millis/]
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