177 lines
4.1 KiB
Plaintext
177 lines
4.1 KiB
Plaintext
[[indices-simulate-index]]
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=== Simulate index API
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++++
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<titleabbrev>Simulate index</titleabbrev>
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++++
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experimental[]
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Returns the index configuration that would be applied to the specified index from an
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existing <<indices-templates, index template>>.
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////
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[source,console]
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--------------------------------------------------
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PUT _index_template/template_1
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{
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"index_patterns": ["myindex*"],
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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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}
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--------------------------------------------------
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// TESTSETUP
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[source,console]
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--------------------------------------------------
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DELETE _index_template/*
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--------------------------------------------------
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// TEARDOWN
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////
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[source,console]
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--------------------------------------------------
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POST /_index_template/_simulate_index/myindex-1
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--------------------------------------------------
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[[simulate-index-api-request]]
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==== {api-request-title}
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`POST /_index_template/_simulate_index/<index>`
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[[simulate-index-api-path-params]]
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==== {api-path-parms-title}
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`<index>`::
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(Required, string)
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Name of the index to simulate.
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[[simulate-index-api-query-params]]
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==== {api-query-parms-title}
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////
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`cause`::
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(Optional, string) The reason for running the simulation.
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////
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include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=master-timeout]
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[role="child_attributes"]
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[[simulate-index-api-response-body]]
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==== {api-response-body-title}
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`overlapping`::
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(array) Any templates that also matched the index but were superseded by a higher-priority template.
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Response includes an empty array if there are no overlapping templates.
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+
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.Properties of `overlapping`
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[%collapsible%open]
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====
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`name`::
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(string) Name of the superseded template.
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`index_patterns`::
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(array) Index patterns that the superseded template applies to.
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====
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`template`::
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(object)
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The settings, mappings, and aliases that would be applied to the index.
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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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include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=aliases]
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+
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Response includes an empty object if no aliases would be applied.
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include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=mappings]
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+
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Omitted from the response if no mappings would be applied.
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include::{es-ref-dir}/rest-api/common-parms.asciidoc[tag=settings]
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+
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Response includes an empty object if no settings would be applied.
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====
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[[simulate-index-api-example]]
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==== {api-examples-title}
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The following example shows the configuration that would be applied to `myindex-1` by
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an existing template.
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[source,console]
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--------------------------------------------------
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PUT /_component_template/ct1 <1>
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{
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"template": {
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"settings": {
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"index.number_of_shards": 2
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}
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}
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}
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PUT /_component_template/ct2 <2>
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{
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"template": {
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"settings": {
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"index.number_of_replicas": 0
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},
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"mappings": {
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"properties": {
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"@timestamp": {
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"type": "date"
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}
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}
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}
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}
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}
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PUT /_index_template/final-template <3>
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{
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"index_patterns": ["myindex*"],
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"composed_of": ["ct1", "ct2"],
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"priority": 5
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}
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POST /_index_template/_simulate_index/myindex-1 <4>
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--------------------------------------------------
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<1> Create a component template (`ct1`) that sets the number of shards to 2
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<2> Create a second component template (`ct2`) that sets the number of replicas to 0 and defines a mapping
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<3> Create an index template (`final-template`) that uses the component templates
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<4> Show the configuration that would be applied to `myindex-1`
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The response shows the index settings, mappings, and aliases applied by the `final-template`:
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[source,console-result]
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---------------------------------------------------------
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{
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"template" : {
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"settings" : {
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"index" : {
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"number_of_shards" : "2",
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"number_of_replicas" : "0"
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}
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},
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"mappings" : {
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"properties" : {
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"@timestamp" : {
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"type" : "date"
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}
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}
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},
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"aliases" : { }
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},
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"overlapping" : [
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{
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"name" : "template_1",
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"index_patterns" : [
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"myindex*"
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]
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}
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]
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}
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---------------------------------------------------------
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