259 lines
7.6 KiB
Plaintext
259 lines
7.6 KiB
Plaintext
[[indices-component-template]]
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=== Create or update component template API
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++++
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<titleabbrev>Create or update component template</titleabbrev>
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++++
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Creates or updates a component template. Component templates are building blocks
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for constructing <<index-templates,index templates>> that specify index
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<<mapping,mappings>>, <<index-modules-settings,settings>>, and
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<<alias,aliases>>.
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[source,console]
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--------------------------------------------------
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PUT _component_template/template_1
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{
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"template": {
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"settings": {
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"number_of_shards": 1
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},
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"mappings": {
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"_source": {
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"enabled": false
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},
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"properties": {
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"host_name": {
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"type": "keyword"
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},
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"created_at": {
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"type": "date",
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"format": "EEE MMM dd HH:mm:ss Z yyyy"
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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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// TESTSETUP
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//////////////////////////
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[source,console]
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--------------------------------------------------
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DELETE _component_template/template_*
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--------------------------------------------------
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// TEARDOWN
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//////////////////////////
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[[put-component-template-api-request]]
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==== {api-request-title}
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`PUT /_component_template/<component-template>`
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[[put-component-template-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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`manage_index_templates` or `manage` <<privileges-list-cluster,cluster
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privilege>> to use this API.
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[[put-component-template-api-desc]]
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==== {api-description-title}
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An index template can be composed of multiple component templates.
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To use a component template, specify it in an index template's `composed_of` list.
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Component templates are only applied to new data streams and indices
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as part of a matching index template.
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Settings and mappings specified directly in the index template or the <<indices-create-index, create index>>
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request override any settings or mappings specified in a component template.
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Component templates are only used during index creation. For data streams, this
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includes data stream creation and the creation of a stream's backing indices.
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Changes to component templates do not
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affect existing indices, including a stream's backing indices.
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===== Comments in component templates
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You can use C-style /* */ block comments in component templates.
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You can include comments anywhere in the request body,
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except before the opening curly bracket.
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[[put-component-template-api-path-params]]
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==== {api-path-parms-title}
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`<component-template>`::
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(Required, string)
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Name of the component template to create.
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+
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[IMPORTANT]
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====
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{es} includes the following built-in component templates:
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// tag::built-in-component-templates[]
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- `logs-mappings`
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- `logs-settings`
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- `metrics-mappings`
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- `metrics-settings`
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- `synthetics-mapping`
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- `synthetics-settings`
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// end::built-in-component-templates[]
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{fleet-guide}/fleet-overview.html[{agent}] uses these templates to configure
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backing indices for its data streams. If you use {agent} and want to overwrite
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one of these templates, set the `version` for your replacement template higher
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than the current version.
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If you don't use {agent} and want to disable all built-in component and index
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templates, set <<stack-templates-enabled,`stack.templates.enabled`>> to `false`
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using the <<cluster-update-settings,cluster update settings API>>.
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====
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[[put-component-template-api-query-params]]
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==== {api-query-parms-title}
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`create`::
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(Optional, Boolean)
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If `true`, this request cannot replace or update existing component templates.
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Defaults to `false`.
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=master-timeout]
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[role="child_attributes"]
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[[put-component-template-api-request-body]]
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==== {api-request-body-title}
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`template`::
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(Required, object)
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This is the template to be applied, may optionally include a `mappings`,
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`settings`, or `aliases` configuration.
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+
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.Properties of `template`
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[%collapsible%open]
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====
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`aliases`::
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(Optional, object of objects) Aliases to add.
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+
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include::{es-repo-dir}/indices/put-index-template.asciidoc[tag=template-ds-alias]
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+
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include::{es-repo-dir}/indices/create-index.asciidoc[tag=aliases-props]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=mappings]
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include::{es-repo-dir}/rest-api/common-parms.asciidoc[tag=settings]
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====
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`version`::
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(Optional, integer)
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Version number used to manage component templates externally.
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This number is not automatically generated or incremented by {es}.
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`allow_auto_create`::
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(Optional, Boolean)
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This setting overrides the value of the
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<<index-creation,`action.auto_create_index`>> cluster setting. If set to
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`true` in a template, then indices can be automatically created using that
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template even if auto-creation of indices is disabled via
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`actions.auto_create_index`. If set to `false`, then indices or data streams matching the
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template must always be explicitly created, and may never be automatically
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created.
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`_meta`::
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(Optional, object)
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Optional user metadata about the component template. May have any contents.
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This map is not automatically generated by {es}.
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[[put-component-template-api-example]]
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==== {api-examples-title}
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===== Component template with index aliases
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You can include <<alias,index aliases>> in a component template.
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[source,console]
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--------------------------------------------------
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PUT _component_template/template_1
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{
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"template": {
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"settings" : {
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"number_of_shards" : 1
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},
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"aliases" : {
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"alias1" : {},
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"alias2" : {
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"filter" : {
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"term" : {"user.id" : "kimchy" }
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},
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"routing" : "shard-1"
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},
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"{index}-alias" : {} <1>
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}
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}
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}
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--------------------------------------------------
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<1> the `{index}` placeholder in the alias name will be replaced with the
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actual index name that the template gets applied to, during index creation.
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[[applying-component-templates]]
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===== Applying component templates
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You cannot directly apply a component template to a data stream or index.
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To be applied, a component template must be included in an index template's `composed_of` list. See <<index-templates>>.
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[[component-templates-version]]
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===== Component template versioning
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You can use the `version` parameter to add a version number to a component template.
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External systems can use these version numbers to simplify template management.
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The `version` parameter is optional and not automatically generated or used by {es}.
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To unset a `version`, replace the template without specifying one.
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[source,console]
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--------------------------------------------------
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PUT /_component_template/template_1
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{
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"template": {
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"settings" : {
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"number_of_shards" : 1
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}
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},
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"version": 123
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}
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--------------------------------------------------
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To check the `version`, you can use the <<getting-component-templates,get component template API>>.
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[[component-templates-metadata]]
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===== Component template metadata
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You can use the `_meta` parameter to add arbitrary metadata to a component template.
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This user-defined object is stored in the cluster state,
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so keeping it short is preferable.
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The `_meta` parameter is optional and not automatically generated or used by {es}.
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To unset `_meta`, replace the template without specifying one.
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[source,console]
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--------------------------------------------------
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PUT /_component_template/template_1
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{
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"template": {
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"settings" : {
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"number_of_shards" : 1
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}
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},
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"_meta": {
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"description": "set number of shards to one",
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"serialization": {
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"class": "MyComponentTemplate",
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"id": 10
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}
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}
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}
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--------------------------------------------------
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To check the `_meta`, you can use the <<getting-component-templates,get component template>> API.
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