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chapter10_part2:/070_Index_Mgmt/10_Settings.asciidoc #297

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chapter10_part2:/070_Index_Mgmt/10_Settings.asciidoc
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27 changes: 10 additions & 17 deletions 070_Index_Mgmt/10_Settings.asciidoc
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Original file line number Diff line number Diff line change
@@ -1,28 +1,21 @@
=== Index Settings
=== 索引设置

There are many many knobs((("index settings"))) that you can twiddle to
customize index behavior, which you can read about in the
{ref}/index-modules.html[Index Modules reference documentation],
but...
你可以通过修改配置来((("index settings")))自定义索引行为，详细配置参照
{ref}/index-modules.html[索引模块]

TIP: Elasticsearch comes with good defaults. Don't twiddle these knobs until
you understand what they do and why you should change them.
TIP: Elasticsearch 提供了优化好的默认配置。 除非你理解这些配置的作用并且知道为什么要去修改，否则不要随意修改。

Two of the most important((("shards", "number_of_shards index setting")))((("number_of_shards setting")))((("index settings", "number_of_shards"))) settings are as follows:
下面是两个((("shards", "number_of_shards index setting")))((("number_of_shards setting")))((("index settings", "number_of_shards"))) 最重要的设置：

`number_of_shards`::

The number of primary shards that an index should have,
which defaults to `5`. This setting cannot be changed
after index creation.
每个索引的主分片数，默认值是 `5` 。这个配置在索引创建后不能修改。

`number_of_replicas`::

The number of replica shards (copies) that each primary shard
should have, which defaults to `1`. This setting can be changed
at any time on a live index.
每个主分片的副本数，默认值是 `1` 。对于活动的索引库，这个配置可以随时修改。

For instance, we could create a small index--just((("index settings", "number_of_replicas")))((("replica shards", "number_of_replicas index setting"))) one primary shard--and no replica shards with the following request:
例如，我们可以创建只有((("index settings", "number_of_replicas")))((("replica shards", "number_of_replicas index setting"))) 一个主分片，没有副本的小索引：

[source,js]
--------------------------------------------------
Expand All @@ -36,8 +29,8 @@ PUT /my_temp_index
--------------------------------------------------
// SENSE: 070_Index_Mgmt/10_Settings.json

Later, we can change the number of replica shards dynamically using the
`update-index-settings` API as((("update-index-settings API"))) follows:
然后，我们可以用
`update-index-settings` API ((("update-index-settings API"))) 动态修改副本数：

[source,js]
--------------------------------------------------
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