125 lines
3.2 KiB
Plaintext
125 lines
3.2 KiB
Plaintext
//lcawley Verified example output 2017-04-11
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[[ml-put-datafeed]]
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==== Create Data Feeds
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The create data feed API enables you to instantiate a data feed.
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===== Request
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`PUT _xpack/ml/datafeeds/<feed_id>`
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===== Description
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You must create a job before you create a data feed. You can associate only one
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data feed to each job.
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===== Path Parameters
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`feed_id` (required)::
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(string) A numerical character string that uniquely identifies the data feed.
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===== Request Body
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`aggregations`::
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(object) If set, the data feed performs aggregation searches.
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For more information, see <<ml-datafeed-resource>>.
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`chunking_config`::
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(object) The chunking configuration, which specifies how data searches are
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chunked. See <<ml-datafeed-chunking-config>>.
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`frequency`::
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(time units) The interval at which scheduled queries are made while the data
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feed runs in real time. The default value is either the bucket span for short
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bucket spans, or, for longer bucket spans, a sensible fraction of the bucket
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span. For example: "150s".
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`indexes` (required)::
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(array) An array of index names. For example: ["it_ops_metrics"].
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`job_id` (required)::
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(string) A numerical character string that uniquely identifies the job.
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`query`::
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(object) The Elasticsearch query domain-specific language (DSL). This value
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corresponds to the query object in an Elasticsearch search POST body. All the
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options that are supported by Elasticsearch can be used, as this object is
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passed verbatim to Elasticsearch. By default, this property has the following
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value: `{"match_all": {"boost": 1}}`. If this property is not specified, the
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default value is `“match_all”: {}`.
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`query_delay`::
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(time units) The number of seconds behind real-time that data is queried. For
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example, if data from 10:04 a.m. might not be searchable in Elasticsearch
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until 10:06 a.m., set this property to 120 seconds. The default value is 60
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seconds. For example: "60s".
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`scroll_size`::
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(unsigned integer) The `size` parameter that is used in Elasticsearch searches.
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The default value is `1000`.
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`types` (required)::
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(array) A list of types to search for within the specified indices.
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For example: ["network","sql","kpi"].
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For more information about these properties,
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see <<ml-datafeed-resource, Data Feed Resources>>.
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===== Authorization
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You must have `manage_ml`, or `manage` cluster privileges to use this API.
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For more information, see <<privileges-list-cluster>>.
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===== Examples
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The following example creates the `datafeed-it-ops-kpi` data feed:
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[source,js]
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--------------------------------------------------
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PUT _xpack/ml/datafeeds/datafeed-it-ops-kpi
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{
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"job_id": "it-ops-kpi",
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"indexes": ["it_ops_metrics"],
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"types": ["kpi","network","sql"],
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"query": {
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"match_all": {
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"boost": 1
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}
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}
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}
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--------------------------------------------------
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// CONSOLE
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// TEST[skip:todo]
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When the data feed is created, you receive the following results:
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[source,js]
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----
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{
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"datafeed_id": "datafeed-it-ops-kpi",
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"job_id": "it-ops-kpi",
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"query_delay": "1m",
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"indexes": [
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"it_ops_metrics"
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],
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"types": [
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"kpi",
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"network",
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"sql"
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],
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"query": {
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"match_all": {
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"boost": 1
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}
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},
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"scroll_size": 1000,
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"chunking_config": {
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"mode": "auto"
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}
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}
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----
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