Get field data cache information

GET /_cat/fielddata
Api key auth Basic auth Bearer auth

Get the amount of heap memory currently used by the field data cache on every data node in the cluster.

IMPORTANT: cat APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the nodes stats API.

Query parameters

  • bytes string

    The unit used to display byte values.

    Values are b, kb, mb, gb, tb, or pb.

  • fields string | array[string]

    Comma-separated list of fields used to limit returned information.

Responses

GET /_cat/fielddata 
curl \
 --request GET 'http://api.example.com/_cat/fielddata' \
 --header "Authorization: $API_KEY"
Response examples (200) 
[
  {
    "id": "string",
    "host": "string",
    "ip": "string",
    "node": "string",
    "field": "string",
    "size": "string"
  }
]

Claim a connector sync job Technical preview

PUT /_connector/_sync_job/{connector_sync_job_id}/_claim
Api key auth Basic auth Bearer auth

This action updates the job status to in_progress and sets the last_seen and started_at timestamps to the current time. Additionally, it can set the sync_cursor property for the sync job.

This API is not intended for direct connector management by users. It supports the implementation of services that utilize the connector protocol to communicate with Elasticsearch.

To sync data using self-managed connectors, you need to deploy the Elastic connector service on your own infrastructure. This service runs automatically on Elastic Cloud for Elastic managed connectors.

Path parameters

application/json

Body Required

  • sync_cursor object

    The cursor object from the last incremental sync job. This should reference the sync_cursor field in the connector state for which the job runs.

  • worker_hostname string Required

    The host name of the current system that will run the job.

Responses

PUT /_connector/_sync_job/{connector_sync_job_id}/_claim 
curl \
 --request PUT 'http://api.example.com/_connector/_sync_job/{connector_sync_job_id}/_claim' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '{"sync_cursor":{},"worker_hostname":"string"}'
Request examples 
{
  "sync_cursor": {},
  "worker_hostname": "string"
}
Response examples (200) 
{}

Update the connector status Technical preview

PUT /_connector/{connector_id}/_status
Api key auth Basic auth Bearer auth

Path parameters

  • connector_id string Required

    The unique identifier of the connector to be updated

application/json

Body Required

  • status string Required

    Values are created, needs_configuration, configured, connected, or error.

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • result string Required

      Values are created, updated, deleted, not_found, or noop.
PUT /_connector/{connector_id}/_status 
curl \
 --request PUT 'http://api.example.com/_connector/{connector_id}/_status' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '{"status":"created"}'
Request examples 
{
  "status": "created"
}
Response examples (200) 
{
  "result": "created"
}

Get auto-follow patterns Added in 6.5.0

GET /_ccr/auto_follow/{name}
Api key auth Basic auth Bearer auth

Get cross-cluster replication auto-follow patterns.

External documentation

Path parameters

  • name string Required

    Specifies the auto-follow pattern collection that you want to retrieve. If you do not specify a name, the API returns information for all collections.

Responses

GET /_ccr/auto_follow/{name} 
curl \
 --request GET 'http://api.example.com/_ccr/auto_follow/{name}' \
 --header "Authorization: $API_KEY"
Response examples (200) 
{
  "patterns": [
    {
      "name": "string",
      "pattern": {
        "active": true,
        "remote_cluster": "string",
        "follow_index_pattern": "string",
        "leader_index_patterns": [
          "string"
        ],
        "leader_index_exclusion_patterns": [
          "string"
        ],
        "max_outstanding_read_requests": 42.0
      }
    }
  ]
}

Get data stream lifecycles Added in 8.11.0

GET /_data_stream/{name}/_lifecycle
Api key auth Basic auth Bearer auth

Retrieves the data stream lifecycle configuration of one or more data streams.

Path parameters

  • name string | array[string] Required

    Comma-separated list of data streams to limit the request. Supports wildcards (*). To target all data streams, omit this parameter or use * or _all.

Query parameters

  • expand_wildcards string | array[string]

    Type of data stream that wildcard patterns can match. Supports comma-separated values, such as open,hidden. Valid values are: all, open, closed, hidden, none.

  • include_defaults boolean

    If true, return all default settings in the response.

  • master_timeout string

    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.

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • data_streams array[object] Required
      Hide data_streams attributes Show data_streams attributes object
      • name string Required
      • lifecycle object
        Hide lifecycle attributes Show lifecycle attributes object
        • data_retention string

          A duration. Units can be nanos, micros, ms (milliseconds), s (seconds), m (minutes), h (hours) and d (days). Also accepts "0" without a unit and "-1" to indicate an unspecified value.

        • downsampling object
          Hide downsampling attribute Show downsampling attribute object
          • rounds array[object] Required

            The list of downsampling rounds to execute as part of this downsampling configuration
GET /_data_stream/{name}/_lifecycle 
curl \
 --request GET 'http://api.example.com/_data_stream/{name}/_lifecycle' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response from `GET _lifecycle/stats?human&pretty`. 
{
  "data_streams": [
    {
      "name": "my-data-stream-1",
      "lifecycle": {
        "enabled": true,
        "data_retention": "7d"
      }
    },
    {
      "name": "my-data-stream-2",
      "lifecycle": {
        "enabled": true,
        "data_retention": "7d"
      }
    }
  ]
}

Downsample an index Technical preview

POST /{index}/_downsample/{target_index}
Api key auth Basic auth Bearer auth

Aggregate a time series (TSDS) index and store pre-computed statistical summaries (min, max, sum, value_count and avg) for each metric field grouped by a configured time interval. For example, a TSDS index that contains metrics sampled every 10 seconds can be downsampled to an hourly index. All documents within an hour interval are summarized and stored as a single document in the downsample index.

NOTE: Only indices in a time series data stream are supported. Neither field nor document level security can be defined on the source index. The source index must be read only (index.blocks.write: true).

Path parameters

  • index string Required

    Name of the time series index to downsample.

  • target_index string Required

    Name of the index to create.

application/json

Body Required

  • fixed_interval string Required

    A date histogram interval. Similar to Duration with additional units: w (week), M (month), q (quarter) and y (year)

Responses

POST /{index}/_downsample/{target_index} 
curl \
 --request POST 'http://api.example.com/{index}/_downsample/{target_index}' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '{"fixed_interval":"string"}'
Request examples 
{
  "fixed_interval": "string"
}
Response examples (200) 
{}

Update data streams Added in 7.16.0

POST /_data_stream/_modify
Api key auth Basic auth Bearer auth

Performs one or more data stream modification actions in a single atomic operation.

application/json

Body Required

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • acknowledged boolean Required

      For a successful response, this value is always true. On failure, an exception is returned instead.
POST /_data_stream/_modify 
curl \
 --request POST 'http://api.example.com/_data_stream/_modify' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '{"actions":[{"add_backing_index":{"data_stream":"string","index":"string"},"remove_backing_index":{"data_stream":"string","index":"string"}}]}'
Request examples 
{
  "actions": [
    {
      "add_backing_index": {
        "data_stream": "string",
        "index": "string"
      },
      "remove_backing_index": {
        "data_stream": "string",
        "index": "string"
      }
    }
  ]
}
Response examples (200) 
{
  "acknowledged": true
}

Create or update a document in an index

POST /{index}/_doc
Api key auth Basic auth Bearer auth

Add a JSON document to the specified data stream or index and make it searchable. If the target is an index and the document already exists, the request updates the document and increments its version.

NOTE: You cannot use this API to send update requests for existing documents in a data stream.

If the Elasticsearch security features are enabled, you must have the following index privileges for the target data stream, index, or index alias:

  • To add or overwrite a document using the PUT /<target>/_doc/<_id> request format, you must have the create, index, or write index privilege.
  • To add a document using the POST /<target>/_doc/ request format, you must have the create_doc, create, index, or write index privilege.
  • To automatically create a data stream or index with this API request, you must have the auto_configure, create_index, or manage index privilege.

Automatic data stream creation requires a matching index template with data stream enabled.

NOTE: Replica shards might not all be started when an indexing operation returns successfully. By default, only the primary is required. Set wait_for_active_shards to change this default behavior.

Automatically create data streams and indices

If the request's target doesn't exist and matches an index template with a data_stream definition, the index operation automatically creates the data stream.

If the target doesn't exist and doesn't match a data stream template, the operation automatically creates the index and applies any matching index templates.

NOTE: Elasticsearch includes several built-in index templates. To avoid naming collisions with these templates, refer to index pattern documentation.

If no mapping exists, the index operation creates a dynamic mapping. By default, new fields and objects are automatically added to the mapping if needed.

Automatic index creation is controlled by the action.auto_create_index setting. If it is true, any index can be created automatically. You can modify this setting to explicitly allow or block automatic creation of indices that match specified patterns or set it to false to turn off automatic index creation entirely. Specify a comma-separated list of patterns you want to allow or prefix each pattern with + or - to indicate whether it should be allowed or blocked. When a list is specified, the default behaviour is to disallow.

NOTE: The action.auto_create_index setting affects the automatic creation of indices only. It does not affect the creation of data streams.

Optimistic concurrency control

Index operations can be made conditional and only be performed if the last modification to the document was assigned the sequence number and primary term specified by the if_seq_no and if_primary_term parameters. If a mismatch is detected, the operation will result in a VersionConflictException and a status code of 409.

Routing

By default, shard placement — or routing — is controlled by using a hash of the document's ID value. For more explicit control, the value fed into the hash function used by the router can be directly specified on a per-operation basis using the routing parameter.

When setting up explicit mapping, you can also use the _routing field to direct the index operation to extract the routing value from the document itself. This does come at the (very minimal) cost of an additional document parsing pass. If the _routing mapping is defined and set to be required, the index operation will fail if no routing value is provided or extracted.

NOTE: Data streams do not support custom routing unless they were created with the allow_custom_routing setting enabled in the template.

  • ** Distributed**

The index operation is directed to the primary shard based on its route and performed on the actual node containing this shard. After the primary shard completes the operation, if needed, the update is distributed to applicable replicas.

Active shards

To improve the resiliency of writes to the system, indexing operations can be configured to wait for a certain number of active shard copies before proceeding with the operation. If the requisite number of active shard copies are not available, then the write operation must wait and retry, until either the requisite shard copies have started or a timeout occurs. By default, write operations only wait for the primary shards to be active before proceeding (that is to say wait_for_active_shards is 1). This default can be overridden in the index settings dynamically by setting index.write.wait_for_active_shards. To alter this behavior per operation, use the wait_for_active_shards request parameter.

Valid values are all or any positive integer up to the total number of configured copies per shard in the index (which is number_of_replicas+1). Specifying a negative value or a number greater than the number of shard copies will throw an error.

For example, suppose you have a cluster of three nodes, A, B, and C and you create an index index with the number of replicas set to 3 (resulting in 4 shard copies, one more copy than there are nodes). If you attempt an indexing operation, by default the operation will only ensure the primary copy of each shard is available before proceeding. This means that even if B and C went down and A hosted the primary shard copies, the indexing operation would still proceed with only one copy of the data. If wait_for_active_shards is set on the request to 3 (and all three nodes are up), the indexing operation will require 3 active shard copies before proceeding. This requirement should be met because there are 3 active nodes in the cluster, each one holding a copy of the shard. However, if you set wait_for_active_shards to all (or to 4, which is the same in this situation), the indexing operation will not proceed as you do not have all 4 copies of each shard active in the index. The operation will timeout unless a new node is brought up in the cluster to host the fourth copy of the shard.

It is important to note that this setting greatly reduces the chances of the write operation not writing to the requisite number of shard copies, but it does not completely eliminate the possibility, because this check occurs before the write operation starts. After the write operation is underway, it is still possible for replication to fail on any number of shard copies but still succeed on the primary. The _shards section of the API response reveals the number of shard copies on which replication succeeded and failed.

No operation (noop) updates

When updating a document by using this API, a new version of the document is always created even if the document hasn't changed. If this isn't acceptable use the _update API with detect_noop set to true. The detect_noop option isn't available on this API because it doesn’t fetch the old source and isn't able to compare it against the new source.

There isn't a definitive rule for when noop updates aren't acceptable. It's a combination of lots of factors like how frequently your data source sends updates that are actually noops and how many queries per second Elasticsearch runs on the shard receiving the updates.

Versioning

Each indexed document is given a version number. By default, internal versioning is used that starts at 1 and increments with each update, deletes included. Optionally, the version number can be set to an external value (for example, if maintained in a database). To enable this functionality, version_type should be set to external. The value provided must be a numeric, long value greater than or equal to 0, and less than around 9.2e+18.

NOTE: Versioning is completely real time, and is not affected by the near real time aspects of search operations. If no version is provided, the operation runs without any version checks.

When using the external version type, the system checks to see if the version number passed to the index request is greater than the version of the currently stored document. If true, the document will be indexed and the new version number used. If the value provided is less than or equal to the stored document's version number, a version conflict will occur and the index operation will fail. For example:

PUT my-index-000001/_doc/1?version=2&version_type=external
{
  "user": {
    "id": "elkbee"
  }
}

In this example, the operation will succeed since the supplied version of 2 is higher than the current document version of 1.
If the document was already updated and its version was set to 2 or higher, the indexing command will fail and result in a conflict (409 HTTP status code).

A nice side effect is that there is no need to maintain strict ordering of async indexing operations run as a result of changes to a source database, as long as version numbers from the source database are used.
Even the simple case of updating the Elasticsearch index using data from a database is simplified if external versioning is used, as only the latest version will be used if the index operations arrive out of order.
External documentation

Path parameters

  • index string Required

    The name of the data stream or index to target. If the target doesn't exist and matches the name or wildcard (*) pattern of an index template with a data_stream definition, this request creates the data stream. If the target doesn't exist and doesn't match a data stream template, this request creates the index. You can check for existing targets with the resolve index API.

Query parameters

  • if_primary_term number

    Only perform the operation if the document has this primary term.

  • if_seq_no number

    Only perform the operation if the document has this sequence number.

  • op_type string

    Set to create to only index the document if it does not already exist (put if absent). If a document with the specified _id already exists, the indexing operation will fail. The behavior is the same as using the <index>/_create endpoint. If a document ID is specified, this paramater defaults to index. Otherwise, it defaults to create. If the request targets a data stream, an op_type of create is required.

    Values are index or create.

  • pipeline string

    The ID of the pipeline to use to preprocess incoming documents. If the index has a default ingest pipeline specified, then setting the value to _none disables the default ingest pipeline for this request. If a final pipeline is configured it will always run, regardless of the value of this parameter.

  • refresh string

    If true, Elasticsearch refreshes the affected shards to make this operation visible to search. If wait_for, it waits for a refresh to make this operation visible to search. If false, it does nothing with refreshes.

    Values are true, false, or wait_for.

  • routing string

    A custom value that is used to route operations to a specific shard.

  • timeout string

    The period the request waits for the following operations: automatic index creation, dynamic mapping updates, waiting for active shards.

    This parameter is useful for situations where the primary shard assigned to perform the operation might not be available when the operation runs. Some reasons for this might be that the primary shard is currently recovering from a gateway or undergoing relocation. By default, the operation will wait on the primary shard to become available for at least 1 minute before failing and responding with an error. The actual wait time could be longer, particularly when multiple waits occur.

  • version number

    An explicit version number for concurrency control. It must be a non-negative long number.

  • version_type string

    The version type.

    Values are internal, external, external_gte, or force.

  • wait_for_active_shards number | string

    The number of shard copies that must be active before proceeding with the operation. You can set it to all or any positive integer up to the total number of shards in the index (number_of_replicas+1). The default value of 1 means it waits for each primary shard to be active.

  • require_alias boolean

    If true, the destination must be an index alias.

application/json

Body Required

object object

Responses

POST /{index}/_doc 
curl \
 --request POST 'http://api.example.com/{index}/_doc' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json"
Request examples 
{}
Response examples (200) 
{
  "_id": "string",
  "_index": "string",
  "_primary_term": 42.0,
  "result": "created",
  "_seq_no": 42.0,
  "_shards": {
    "failed": 42.0,
    "successful": 42.0,
    "total": 42.0,
    "failures": [
      {
        "index": "string",
        "node": "string",
        "reason": {
          "type": "string",
          "reason": "string",
          "stack_trace": "string",
          "caused_by": {},
          "root_cause": [
            {}
          ],
          "suppressed": [
            {}
          ]
        },
        "shard": 42.0,
        "status": "string"
      }
    ],
    "skipped": 42.0
  },
  "_version": 42.0,
  "forced_refresh": true
}

Fleet

Index lifecycle management

Learn more about managing the index lifecycle

Get lifecycle policies Added in 6.6.0

GET /_ilm/policy
Api key auth Basic auth Bearer auth

Query parameters

  • master_timeout string

    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.

  • timeout string

    Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.

Responses

GET /_ilm/policy 
curl \
 --request GET 'http://api.example.com/_ilm/policy' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response when retrieving a lifecycle policy. 
{
  "my_policy": {
    "version": 1,
    "modified_date": 82392349,
    "policy": {
      "phases": {
        "warm": {
          "min_age": "10d",
          "actions": {
            "forcemerge": {
              "max_num_segments": 1
            }
          }
        },
        "delete": {
          "min_age": "30d",
          "actions": {
            "delete": {
              "delete_searchable_snapshot": true
            }
          }
        }
      }
    },
    "in_use_by" : {
      "indices" : [],
      "data_streams" : [],
      "composable_templates" : []
    }
  }
}

Delete an inference endpoint Added in 8.11.0

DELETE /_inference/{task_type}/{inference_id}
Api key auth Basic auth Bearer auth

Path parameters

  • task_type string Required

    The task type

    Values are sparse_embedding, text_embedding, rerank, or completion.

  • inference_id string Required

    The inference Id

Query parameters

  • dry_run boolean

    When true, the endpoint is not deleted, and a list of ingest processors which reference this endpoint is returned

  • force boolean

    When true, the inference endpoint is forcefully deleted even if it is still being used by ingest processors or semantic text fields

Responses

  • 200 application/json
    Hide response attributes Show response attributes object
    • acknowledged boolean Required

      For a successful response, this value is always true. On failure, an exception is returned instead.

    • pipelines array[string] Required
DELETE /_inference/{task_type}/{inference_id} 
curl \
 --request DELETE 'http://api.example.com/_inference/{task_type}/{inference_id}' \
 --header "Authorization: $API_KEY"
Response examples (200) 
{
  "acknowledged": true,
  "pipelines": [
    "string"
  ]
}