Create or update a component template Generally available; Added in 7.8.0

POST /_component_template/{name}
Api key auth Basic auth Bearer auth

Component templates are building blocks for constructing index templates that specify index mappings, settings, and aliases.

An index template can be composed of multiple component templates. To use a component template, specify it in an index template’s composed_of list. Component templates are only applied to new data streams and indices as part of a matching index template.

Settings and mappings specified directly in the index template or the create index request override any settings or mappings specified in a component template.

Component templates are only used during index creation. For data streams, this includes data stream creation and the creation of a stream’s backing indices. Changes to component templates do not affect existing indices, including a stream’s backing indices.

You can use C-style /* *\/ block comments in component templates. You can include comments anywhere in the request body except before the opening curly bracket.

Applying component templates

You cannot directly apply a component template to a data stream or index. To be applied, a component template must be included in an index template's composed_of list.

Required authorization

  • Cluster privileges: manage_index_templates

Path parameters

  • name string Required

    Name of the component template to create. Elasticsearch includes the following built-in component templates: logs-mappings; logs-settings; metrics-mappings; metrics-settings;synthetics-mapping; synthetics-settings. Elastic Agent uses these templates to configure backing indices for its data streams. If you use Elastic Agent and want to overwrite one of these templates, set the version for your replacement template higher than the current version. If you don’t use Elastic Agent and want to disable all built-in component and index templates, set stack.templates.enabled to false using the cluster update settings API.

Query parameters

  • create boolean

    If true, this request cannot replace or update existing component templates.

  • 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.

    Values are -1 or 0.

application/json

Body Required

  • template object Required
    Hide template attributes Show template attributes object
    • aliases object
      Hide aliases attribute Show aliases attribute object
      • * object Additional properties
        Hide * attributes Show * attributes object
        • filter object

          An Elasticsearch Query DSL (Domain Specific Language) object that defines a query.

          External documentation
        • index_routing string
        • is_hidden boolean

          If true, the alias is hidden. All indices for the alias must have the same is_hidden value.

        • is_write_index boolean

          If true, the index is the write index for the alias.

        • routing string
        • search_routing string
    • mappings object
      Hide mappings attributes Show mappings attributes object
      • all_field object
        Hide all_field attributes Show all_field attributes object
        • analyzer string Required
        • enabled boolean Required
        • omit_norms boolean Required
        • search_analyzer string Required
        • similarity string Required
        • store boolean Required
        • store_term_vector_offsets boolean Required
        • store_term_vector_payloads boolean Required
        • store_term_vector_positions boolean Required
        • store_term_vectors boolean Required
      • date_detection boolean
      • dynamic string

        Values are strict, runtime, true, or false.

      • dynamic_date_formats array[string]
      • dynamic_templates array[object]
      • _field_names object
        Hide _field_names attribute Show _field_names attribute object
        • enabled boolean Required
      • index_field object
        Hide index_field attribute Show index_field attribute object
        • enabled boolean Required
      • _meta object
        Hide _meta attribute Show _meta attribute object
        • * object Additional properties
      • numeric_detection boolean
      • properties object
      • _routing object
        Hide _routing attribute Show _routing attribute object
        • required boolean Required
      • _size object
        Hide _size attribute Show _size attribute object
        • enabled boolean Required
      • _source object
        Hide _source attributes Show _source attributes object
        • compress boolean
        • compress_threshold string
        • enabled boolean
        • excludes array[string]
        • includes array[string]
        • mode string

          Values are disabled, stored, or synthetic.

      • runtime object
        Hide runtime attribute Show runtime attribute object
        • * object Additional properties
          Hide * attributes Show * attributes object
          • fields object

            For type composite

            Hide fields attribute Show fields attribute object
            • * object Additional properties
              Hide * attribute Show * attribute object
              • type string Required

                Values are boolean, composite, date, double, geo_point, geo_shape, ip, keyword, long, or lookup.

          • fetch_fields array[object]

            For type lookup

            Hide fetch_fields attributes Show fetch_fields attributes object
            • field string Required

              Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

            • format string
          • format string

            A custom format for date type runtime fields.

          • input_field string

            Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

          • target_field string

            Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

          • target_index string
          • script object
            Hide script attributes Show script attributes object
            • source string

              The script source.

            • id string
            • params object

              Specifies any named parameters that are passed into the script as variables. Use parameters instead of hard-coded values to decrease compile time.

              Hide params attribute Show params attribute object
              • * object Additional properties

            • lang string

              Any of:
              ScriptLanguage string ScriptLanguage string

              Values are painless, expression, mustache, or java.

            • options object
              Hide options attribute Show options attribute object
              • * string Additional properties
          • type string Required

            Values are boolean, composite, date, double, geo_point, geo_shape, ip, keyword, long, or lookup.

      • enabled boolean
      • subobjects string

        Values are true or false.

      • _data_stream_timestamp object
        Hide _data_stream_timestamp attribute Show _data_stream_timestamp attribute object
        • enabled boolean Required
    • settings object
      Index settings
    • defaults object
      Index settings
    • data_stream string
    • lifecycle object

      Data stream lifecycle denotes that a data stream is managed by the data stream lifecycle and contains the configuration.

      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

          Hide rounds attributes Show rounds attributes object
          • after string Required

            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.

          • config object Required
            Hide config attribute Show config attribute object
            • fixed_interval string Required

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

      • enabled boolean

        If defined, it turns data stream lifecycle on/off (true/false) for this data stream. A data stream lifecycle that's disabled (enabled: false) will have no effect on the data stream.

  • version number
  • _meta object
    Hide _meta attribute Show _meta attribute object
    • * object Additional properties
  • deprecated boolean

    Marks this index template as deprecated. When creating or updating a non-deprecated index template that uses deprecated components, Elasticsearch will emit a deprecation warning.

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 /_component_template/{name} 
curl \
 --request POST 'http://api.example.com/_component_template/{name}' \
 --header "Authorization: $API_KEY" \
 --header "Content-Type: application/json" \
 --data '"{\n  \"template\": null,\n  \"settings\": {\n    \"number_of_shards\": 1\n  },\n  \"mappings\": {\n    \"_source\": {\n      \"enabled\": false\n    },\n    \"properties\": {\n      \"host_name\": {\n        \"type\": \"keyword\"\n      },\n      \"created_at\": {\n        \"type\": \"date\",\n        \"format\": \"EEE MMM dd HH:mm:ss Z yyyy\"\n      }\n    }\n  }\n}"'
Request examples 
{
  "template": null,
  "settings": {
    "number_of_shards": 1
  },
  "mappings": {
    "_source": {
      "enabled": false
    },
    "properties": {
      "host_name": {
        "type": "keyword"
      },
      "created_at": {
        "type": "date",
        "format": "EEE MMM dd HH:mm:ss Z yyyy"
      }
    }
  }
}
You can include index aliases in a component template. During index creation, the `{index}` placeholder in the alias name will be replaced with the actual index name that the template gets applied to. 
{
  "template": null,
  "settings": {
    "number_of_shards": 1
  },
  "aliases": {
    "alias1": {},
    "alias2": {
      "filter": {
        "term": {
          "user.id": "kimchy"
        }
      },
      "routing": "shard-1"
    },
    "{index}-alias": {}
  }
}