mirror of
https://github.com/honeymoose/OpenSearch.git
synced 2025-02-23 05:15:04 +00:00
James Rodewig
GitHub
parent
e3469bb6e2
commit
d66084dcaf
@ -1,8 +1,5 @@
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[[data-streams-change-mappings-and-settings]]
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== Change mappings and settings of backing indices
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++++
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<titleabbrev>Change mappings and settings</titleabbrev>
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++++
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== Change mappings and settings for a data stream
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Each data stream has a <<create-a-data-stream-template,matching index
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template>>. Mappings and index settings from this template are applied to new
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@ -10,26 +7,22 @@ backing indices created for the stream. This includes the stream's first
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backing index, which is auto-generated when the stream is created.
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Before creating a data stream, we recommend you carefully consider which
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mappings and settings to include in this template. However, if you later need to
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change the mappings or settings of a data stream's backing indices, you have a
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couple options:
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mappings and settings to include in this template.
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* To apply changes to future backing indices, simply update the index
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template used by the data stream. Mapping and setting changes will be
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automatically applied to any backing indices created after the update.
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+
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.*Example*
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[%collapsible]
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====
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`logs_data_stream` is an existing index template used by the
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`logs` data stream.
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If you later need to change the mappings or settings for a data stream, you have
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a few options:
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The following <<indices-templates,put index template API>> makes several
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changes to the `logs_data_stream` template:
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* <<add-new-field-mapping-to-a-data-stream>>
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* <<change-existing-field-mapping-in-a-data-stream>>
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* <<change-dynamic-index-setting-for-a-data-stream>>
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* <<change-static-index-setting-for-a-data-stream>>
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* It changes the `@timestamp` field mapping from the `date` field datatype to
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the `date_nanos` datatype.
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* It adds new `sort.field` and `sort.order` index settings.
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TIP: If your changes include modifications to existing field mappings or
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<<index-modules-settings,static index settings>>, a reindex is often required to
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apply the changes to a data stream's backing indices. If you are already
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performing a reindex, you can use the same process to add new field
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mappings and change <<index-modules-settings,dynamic index settings>>. See
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<<data-streams-use-reindex-to-change-mappings-settings>>.
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////
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[source,console]
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@ -68,23 +61,61 @@ PUT /_index_template/logs_data_stream
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"type": "date"
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}
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}
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},
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"settings": {
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"index.lifecycle.name": "logs_policy"
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}
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}
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}
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PUT /logs/_bulk?refresh
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{"create":{"_index" : "logs"}}
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{ "@timestamp": "2020-12-08T11:04:05.000Z" }
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{"create":{"_index" : "logs"}}
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{ "@timestamp": "2020-12-08T11:06:07.000Z" }
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{"create":{"_index" : "logs"}}
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{ "@timestamp": "2020-12-09T11:07:08.000Z" }
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PUT /_index_template/new_logs_data_stream
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{
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"index_patterns": [ "new_logs*" ],
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"data_stream": {
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"timestamp_field": "@timestamp"
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},
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"template": {
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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 /_data_stream/logs
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PUT /_data_stream/new_logs
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----
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// TESTSETUP
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[source,console]
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----
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DELETE /_data_stream/*
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DELETE /_index_template/*
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DELETE /_ilm/policy/logs_policy
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----
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// TEARDOWN
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////
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[discrete]
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[[add-new-field-mapping-to-a-data-stream]]
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=== Add a new field mapping to a data stream
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To add a mapping for a new field to a data stream, following these steps:
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. Update the index template used by the data stream. This ensures the new
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field mapping is added to future backing indices created for the stream.
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+
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.*Example*
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[%collapsible]
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====
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`logs_data_stream` is an existing index template used by the `logs` data stream.
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The following <<indices-templates,put index template>> request adds a mapping
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for a new field, `message`, to the template.
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[source,console]
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----
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PUT /_index_template/logs_data_stream
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@ -97,62 +128,265 @@ PUT /_index_template/logs_data_stream
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"mappings": {
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"properties": {
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"@timestamp": {
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"type": "date_nanos" <1>
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"type": "date"
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},
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"message": { <1>
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"type": "text"
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}
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}
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},
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"settings": {
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"index.lifecycle.name": "logs_policy",
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"sort.field" : [ "@timestamp"], <2>
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"sort.order" : [ "desc"] <3>
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}
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}
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}
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----
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// TEST[continued]
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<1> Changes the `@timestamp` field mapping to the `date_nanos` datatype.
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<2> Adds the `sort.field` index setting.
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<3> Adds the `sort.order` index setting.
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<1> Adds a mapping for the new `message` field.
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====
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+
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If wanted, you can <<manually-roll-over-a-data-stream,roll over the data
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stream>> to immediately apply the new mappings and settings to the data stream's
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write index. This affects any new data added to the stream after the rollover.
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. Use the <<indices-put-mapping,put mapping API>> to add the new field mapping
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to the data stream. By default, this adds the mapping to the stream's existing
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backing indices, including the write index.
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+
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.*Example*
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[%collapsible]
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====
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The following <<indices-rollover-index,rollover API>> request rolls over the
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`logs` data stream. This creates a new write index with mappings and index
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settings from the recently updated `logs_data_stream` template.
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The following put mapping API request adds the new `message` field mapping to
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the `logs` data stream.
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[source,console]
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----
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POST /logs/_rollover/
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PUT /logs/_mapping
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{
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"properties": {
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"message": {
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"type": "text"
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}
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}
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}
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----
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// TEST[continued]
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====
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[discrete]
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[[change-existing-field-mapping-in-a-data-stream]]
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=== Change an existing field mapping in a data stream
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The documentation for each <<mapping-params,mapping parameter>> indicates
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whether you can update it for an existing field using the
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<<indices-put-mapping,put mapping API>>. To update these parameters for an
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existing field, follow these steps:
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. Update the index template used by the data stream. This ensures the updated
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field mapping is added to future backing indices created for the stream.
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+
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IMPORTANT: You cannot use these methods to change the mapping of a data stream's
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<<create-a-data-stream-template,timestamp field>>. To change the timestamp
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field's mapping, you must reindex the data stream. See
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.*Example*
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[%collapsible]
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====
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`logs_data_stream` is an existing index template used by the `logs` data stream.
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The following <<indices-templates,put index template>> request changes the
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argument for the `host.ip` field's <<ignore-malformed,`ignore_malformed`>>
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mapping parameter to `true`.
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[source,console]
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----
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PUT /_index_template/logs_data_stream
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{
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"index_patterns": [ "logs*" ],
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"data_stream": {
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"timestamp_field": "@timestamp"
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},
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"template": {
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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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"host": {
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"properties": {
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"ip": {
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"type": "ip",
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"ignore_malformed": true <1>
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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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}
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----
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<1> Changes the `host.ip` field's `ignore_malformed` value to `true`.
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====
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. Use the <<indices-put-mapping,put mapping API>> to apply the mapping changes
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to the data stream. By default, this applies the changes to the stream's
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existing backing indices, including the write index.
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+
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.*Example*
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[%collapsible]
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====
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The following <<indices-put-mapping,put mapping API>> request targets the `logs`
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data stream. The request changes the argument for the `host.ip` field's
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`ignore_malformed` mapping parameter to `true`.
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[source,console]
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----
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PUT /logs/_mapping
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{
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"properties": {
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"host": {
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"properties": {
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"ip": {
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"type": "ip",
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"ignore_malformed": true
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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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====
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Except for supported mapping parameters, we don't recommend you change the
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mapping or field datatype of existing fields, even in a data stream's matching
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index template or its backing indices. Changing the mapping of an existing
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field could invalidate any data that’s already indexed.
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If you need to change the mapping of an existing field, create a new
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data stream and reindex your data into it. See
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<<data-streams-use-reindex-to-change-mappings-settings>>.
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* To apply mapping and setting changes to all existing backing indices and
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future ones, you must create a new data stream and reindex your data into it.
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See <<data-streams-use-reindex-to-change-mappings-settings>>.
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[discrete]
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[[change-dynamic-index-setting-for-a-data-stream]]
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=== Change a dynamic index setting for a data stream
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To change a <<index-modules-settings,dynamic index setting>> for a data stream,
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follow these steps:
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. Update the index template used by the data stream. This ensures the setting is
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applied to future backing indices created for the stream.
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+
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.*Example*
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[%collapsible]
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====
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`logs_data_stream` is an existing index template used by the `logs` data stream.
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The following <<indices-templates,put index template>> request changes the
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template's `index.refresh_interval` index setting to `30s` (30 seconds).
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[source,console]
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----
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PUT /_index_template/logs_data_stream
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{
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"index_patterns": [ "logs*" ],
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"data_stream": {
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"timestamp_field": "@timestamp"
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},
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"template": {
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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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"settings": {
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"index.refresh_interval": "30s" <1>
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}
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}
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}
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----
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<1> Changes the `index.refresh_interval` setting to `30s` (30 seconds).
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====
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. Use the <<indices-update-settings,update index settings API>> to update the
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index setting for the data stream. By default, this applies the setting to
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the stream's existing backing indices, including the write index.
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+
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.*Example*
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[%collapsible]
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====
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The following update index settings API request updates the
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`index.refresh_interval` setting for the `logs` data stream.
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[source,console]
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----
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PUT /logs/_settings
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{
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"index": {
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"refresh_interval": "30s"
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}
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}
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----
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====
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[discrete]
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[[change-static-index-setting-for-a-data-stream]]
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=== Change a static index setting for a data stream
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<<index-modules-settings,Static index settings>> can only be set when a backing
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index is created. You cannot update static index settings using the
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<<indices-update-settings,update index settings API>>.
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To apply a new static setting to future backing indices, update the index
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template used by the data stream. The setting is automatically applied to any
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backing index created after the update.
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.*Example*
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[%collapsible]
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====
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`logs_data_stream` is an existing index template used by the `logs` data stream.
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The following <<indices-templates,put index template API>> requests adds new
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`sort.field` and `sort.order index` settings to the template.
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[source,console]
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----
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PUT /_index_template/logs_data_stream
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{
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"index_patterns": [ "logs*" ],
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"data_stream": {
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"timestamp_field": "@timestamp"
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},
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"template": {
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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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"settings": {
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"sort.field": [ "@timestamp"], <1>
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"sort.order": [ "desc"] <2>
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}
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}
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}
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----
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<1> Adds the `sort.field` index setting.
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<2> Adds the `sort.order` index setting.
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====
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If wanted, you can <<manually-roll-over-a-data-stream,roll over the data
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stream>> to immediately apply the setting to the data stream’s write index. This
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affects any new data added to the stream after the rollover. However, it does
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not affect the data stream's existing backing indices or existing data.
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To apply static setting changes to existing backing indices, you must create a
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new data stream and reindex your data into it. See
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<<data-streams-use-reindex-to-change-mappings-settings>>.
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[discrete]
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[[data-streams-use-reindex-to-change-mappings-settings]]
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=== Use reindex to change mappings or settings
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To change the mappings or settings for every backing index in a data stream, you
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must first create or update an index template so that it contains the
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changes. You can then reindex the existing data stream into a new one matching
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the template. This applies the mapping and setting changes in the template
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to each document and backing index of the data stream destination. These changes
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also affect any future backing index created by the new stream.
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You can use a reindex to change the mappings or settings of a data stream. This
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is often required to change the datatype of an existing field or update static
|
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index settings for backing indices.
|
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To reindex a data stream, first create or update an index template so that it
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contains the wanted mapping or setting changes. You can then reindex the
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existing data stream into a new stream matching the template. This applies the
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mapping and setting changes in the template to each document and backing index
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added to the new data stream. These changes also affect any future backing
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index created by the new stream.
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Follow these steps:
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@ -174,7 +408,6 @@ wildcard pattern can be used to create a new data stream.
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----
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GET /_resolve/index/new_logs*
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----
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// TEST[continued]
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The API returns the following response, indicating no existing targets match
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this pattern.
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@ -182,11 +415,12 @@ this pattern.
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[source,console-result]
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----
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{
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"indices" : [ ],
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"aliases" : [ ],
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"data_streams" : [ ]
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"indices": [ ],
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"aliases": [ ],
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"data_streams": [ ]
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}
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----
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// TESTRESPONSE[s/"data_streams": \[ \]/"data_streams": $body.data_streams/]
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====
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. Create or update an index template. This template should contain the
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@ -235,15 +469,12 @@ PUT /_index_template/new_logs_data_stream
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}
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},
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"settings": {
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"index.lifecycle.name": "logs_policy",
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"sort.field" : [ "@timestamp"], <2>
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"sort.order" : [ "desc"] <3>
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"sort.field": [ "@timestamp"], <2>
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"sort.order": [ "desc"] <3>
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}
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}
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}
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----
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// TEST[continued]
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<1> Changes the `@timestamp` field mapping to the `date_nanos` field datatype.
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<2> Adds the `sort.field` index setting.
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<3> Adds the `sort.order` index setting.
|
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@ -280,7 +511,7 @@ existing index or data stream uses this name, this request creates the
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----
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PUT /_data_stream/new_logs
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----
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// TEST[continued]
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// TEST[s/new_logs/new_logs_two/]
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====
|
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|
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. If you do not want to mix new and old data in your new data stream, pause the
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@ -308,23 +539,6 @@ PUT /_cluster/settings
|
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}
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}
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----
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||||
// TEST[continued]
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////
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[source,console]
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----
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DELETE /_data_stream/logs
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DELETE /_data_stream/new_logs
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DELETE /_index_template/logs_data_stream
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DELETE /_index_template/new_logs_data_stream
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DELETE /_ilm/policy/logs_policy
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----
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// TEST[continued]
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////
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||||
====
|
||||
|
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. Reindex your data to the new data stream using an `op_type` of `create`.
|
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@ -383,49 +597,6 @@ The following <<docs-reindex,reindex API>> request copies documents from
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||||
`.ds-logs-000001` to the `new_logs` data stream. Note the request's `op_type` is
|
||||
`create`.
|
||||
|
||||
////
|
||||
[source,console]
|
||||
----
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||||
PUT /_index_template/logs_data_stream
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{
|
||||
"index_patterns": [ "logs*" ],
|
||||
"data_stream": {
|
||||
"timestamp_field": "@timestamp"
|
||||
},
|
||||
"template": {
|
||||
"mappings": {
|
||||
"properties": {
|
||||
"@timestamp": {
|
||||
"type": "date"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
PUT /_index_template/new_logs_data_stream
|
||||
{
|
||||
"index_patterns": [ "new_logs*" ],
|
||||
"data_stream": {
|
||||
"timestamp_field": "@timestamp"
|
||||
},
|
||||
"template": {
|
||||
"mappings": {
|
||||
"properties": {
|
||||
"@timestamp": {
|
||||
"type": "date"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
PUT /_data_stream/logs
|
||||
|
||||
PUT /_data_stream/new_logs
|
||||
----
|
||||
////
|
||||
|
||||
[source,console]
|
||||
----
|
||||
POST /_reindex
|
||||
@ -439,7 +610,6 @@ POST /_reindex
|
||||
}
|
||||
}
|
||||
----
|
||||
// TEST[continued]
|
||||
====
|
||||
+
|
||||
You can also use a query to reindex only a subset of documents with each
|
||||
@ -474,7 +644,6 @@ POST /_reindex
|
||||
}
|
||||
}
|
||||
----
|
||||
// TEST[continued]
|
||||
====
|
||||
|
||||
. If you previously changed your {ilm-init} poll interval, change it back to its
|
||||
@ -496,7 +665,6 @@ PUT /_cluster/settings
|
||||
}
|
||||
}
|
||||
----
|
||||
// TEST[continued]
|
||||
====
|
||||
|
||||
. Resume indexing using the new data stream. Searches on this stream will now
|
||||
@ -516,17 +684,4 @@ indices and any data they contain.
|
||||
----
|
||||
DELETE /_data_stream/logs
|
||||
----
|
||||
// TEST[continued]
|
||||
====
|
||||
|
||||
////
|
||||
[source,console]
|
||||
----
|
||||
DELETE /_data_stream/new_logs
|
||||
|
||||
DELETE /_index_template/logs_data_stream
|
||||
|
||||
DELETE /_index_template/new_logs_data_stream
|
||||
----
|
||||
// TEST[continued]
|
||||
////
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user