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# 模块 原文链接 : [https://www.elastic.co/guide/en/elasticsearch/reference/current/modules.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules.html) 译文链接 : [http://www.apache.wiki/display/Elasticsearch/Modules](http://www.apache.wiki/display/Elasticsearch/Modules) 贡献者 : [阿叩](/display/~luanqing),[ApacheCN](/display/~apachecn),[Apache中文网](/display/~apachechina) MarkDown文件:[Modules.md](https://github.com/aqlu/elasticsearch_translate/blob/master/Modules.md) ## 模块 本章节负责介绍Elasticsearch包含的各个模块的功能,每个模块的配置都可以通过如下方式进行配置: _静态的_    _这些配置项必须基于节点来进行设置,在启动节点前可以通过`elasticsearch.yml`配置文件、环境变量、命令行参数方式来进行配置。他们必须明确地在集群中的每个节点上进行设置。_ _动态的_    _这些配置可以通过群集的[cluster-update-settings](https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-update-settings.html) API进行动态更新。_ 本节介绍的模块有: [Cluster-level routing and shard allocation(集群级别的路由与分片分配)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-cluster.html))   _用来控制在何处、何时、以及如何给节点分配分片。_ [Discovery(发现)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery.html)   构成一个_集群的节点彼此之间是如何发现的。_ [Gateway(网关)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-gateway.html)   _集群启动恢复前需要多少个节点加入。_ [HTTP](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-http.html)   _用来控制配置`HTTP REST`接口。_ [Indices(索引)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-indices.html)   _所有跟索引相关的设置。_ [Network(网络)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-network.html)   _控制默认的网络设置。_ [Node client(节点客户端)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-node.html)   _一个加入集群的Java客户端节点,但不能保存数据或作为主节点。_ [Painless](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-scripting-painless.html)   _Elasticsearch内置的脚本语言,遵循尽可能的安全设计。_ [Plugins(插件)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-plugins.html)   _通过插件来扩展Elasticsearch的功能。_ [Scripting(脚本)](/pages/viewpage.action?pageId=4260408)   _通过Lucene表达式、Groovy、Python、以及Javascript来自定义脚本。你也可以使用内置的脚本语言[Painless](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-scripting-painless.html)。_ [Snapshot/Restore(快照/还原)](/pages/viewpage.action?pageId=9405386)   _通过快照与还原模块来备份你的数据。_ [Thread pools(线程池)](/pages/viewpage.action?pageId=9405389)   _Elasticsearch专用的线程池的信息。_ [Transport(传输)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-transport.html)   _Elasticsearch内部各节点之间的网络传输层通信配置。_ [Tribe nodes](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-tribe.html)   _Tribe节点能加入一个或多个集群,并作为它们之间的联合客户端。_ [Cross cluster Search(跨集群搜索)](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-cross-cluster-search.html)   _跨集群搜索功能可以通过一个不加入集群、并且能作为它们之间的联合客户端来实现一个以上集群的搜索。_