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67d233cecd
Warmers are now barely useful and will be removed in 3.0. Note that this only removes the warmer API and query-based warmers. We still have warmers internally for eg. global ordinals. Close #15607
125 lines
3.3 KiB
Plaintext
125 lines
3.3 KiB
Plaintext
[[indices-create-index]]
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== Create Index
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The create index API allows to instantiate an index. Elasticsearch
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provides support for multiple indices, including executing operations
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across several indices.
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[float]
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[[create-index-settings]]
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=== Index Settings
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Each index created can have specific settings
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associated with it.
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[source,js]
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--------------------------------------------------
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$ curl -XPUT 'http://localhost:9200/twitter/'
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$ curl -XPUT 'http://localhost:9200/twitter/' -d '
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index :
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number_of_shards : 3 <1>
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number_of_replicas : 2 <2>
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'
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--------------------------------------------------
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<1> Default for `number_of_shards` is 5
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<2> Default for `number_of_replicas` is 1 (ie one replica for each primary shard)
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The above second curl example shows how an index called `twitter` can be
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created with specific settings for it using http://www.yaml.org[YAML].
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In this case, creating an index with 3 shards, each with 2 replicas. The
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index settings can also be defined with http://www.json.org[JSON]:
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[source,js]
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--------------------------------------------------
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$ curl -XPUT 'http://localhost:9200/twitter/' -d '{
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"settings" : {
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"index" : {
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"number_of_shards" : 3,
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"number_of_replicas" : 2
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}
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}
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}'
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--------------------------------------------------
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or more simplified
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[source,js]
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--------------------------------------------------
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$ curl -XPUT 'http://localhost:9200/twitter/' -d '{
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"settings" : {
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"number_of_shards" : 3,
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"number_of_replicas" : 2
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}
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}'
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--------------------------------------------------
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[NOTE]
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You do not have to explicitly specify `index` section inside the
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`settings` section.
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For more information regarding all the different index level settings
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that can be set when creating an index, please check the
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<<index-modules,index modules>> section.
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[float]
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[[mappings]]
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=== Mappings
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The create index API allows to provide a set of one or more mappings:
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[source,js]
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--------------------------------------------------
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curl -XPOST localhost:9200/test -d '{
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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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"type1" : {
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"_source" : { "enabled" : false },
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"properties" : {
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"field1" : { "type" : "string", "index" : "not_analyzed" }
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}
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}
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}
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}'
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--------------------------------------------------
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[float]
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[[create-index-aliases]]
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=== Aliases
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The create index API allows also to provide a set of <<indices-aliases,aliases>>:
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[source,js]
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--------------------------------------------------
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curl -XPUT localhost:9200/test -d '{
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"aliases" : {
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"alias_1" : {},
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"alias_2" : {
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"filter" : {
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"term" : {"user" : "kimchy" }
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},
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"routing" : "kimchy"
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}
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}
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}'
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--------------------------------------------------
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[float]
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=== Creation Date
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When an index is created, a timestamp is stored in the index metadata for the creation date. By
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default this it is automatically generated but it can also be specified using the
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`creation_date` parameter on the create index API:
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[source,js]
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--------------------------------------------------
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curl -XPUT localhost:9200/test -d '{
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"creation_date" : 1407751337000 <1>
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}'
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--------------------------------------------------
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<1> `creation_date` is set using epoch time in milliseconds.
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