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# Installation(安装) 原文链接 : [https://www.elastic.co/guide/en/elasticsearch/reference/5.4/_installation.html](https://www.elastic.co/guide/en/elasticsearch/reference/5.4/_installation.html) 译文链接 : [http://www.apache.wiki/pages/viewpage.action?pageId=4260676](http://www.apache.wiki/pages/viewpage.action?pageId=4260676) 贡献者 : [那伊抹微笑](/display/~wangyangting),[ApacheCN](/display/~apachecn),[Apache中文网](/display/~apachechina) **Elasticsearch** 需要的 **Java** 最低版本为 **Java 8**。在该文档中,建议您使用 ** Oracle JDK version 1.8.0_131**。**Java** 的安装因平台而异,所以我们不会在这里详细的介绍。在 [Oracle 的官网 ](http://docs.oracle.com/javase/8/docs/technotes/guides/install/install_overview.html)上可以找到 **Oracle** 的推荐安装文档。我想说的是,在安装 **Elasticsearch** 之前,首先请您检查的 **Java** 版本,运行以下命令 :  ``` java -version echo $JAVA_HOME ``` 如果 **Java** 安装完成之后,我们可以下载并运行 **Elasticsearch**。二进制包与所有历史版本都可以从 `[www.elastic.co/downloads](http://www.elastic.co/downloads) 中`获得。对于每一个版本,您可以选择 **zip**,**tar**,**DEB** 或者 **RPM** 包。为了简单期间,我们使用 **tar** 文件。 让我们下载 **Elasticsearch 5.4.0 tar**,如下所示(**Windows** 用户应该下载 **zip** 包) :  ``` curl -L -O https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.4.0.tar.gz ``` 然后抽取文件,如下所示(**Windows** 用户应该 **unzip**(解压缩)该 **zip** 包) :  ``` tar -xvf elasticsearch-5.4.0.tar.gz ``` 然后会在您当前目录中创建一堆文件和文件夹。然后转到 **bin** 目录中起,如下所示 :  ``` cd elasticsearch-5.4.0/bin ``` 现在我们准备启动我们的节点,单个集群(**Windows** 用户应该运行 **elasticsearch.bat** 文件) :  ``` ./elasticsearch ``` 如果一切顺利,你应该看到一堆看起来像下面的消息 :  ``` [2016-09-16T14:17:51,251][INFO ][o.e.n.Node ] [] initializing ... [2016-09-16T14:17:51,329][INFO ][o.e.e.NodeEnvironment ] [6-bjhwl] using [1] data paths, mounts [[/ (/dev/sda1)]], net usable_space [317.7gb], net total_space [453.6gb], spins? [no], types [ext4] [2016-09-16T14:17:51,330][INFO ][o.e.e.NodeEnvironment ] [6-bjhwl] heap size [1.9gb], compressed ordinary object pointers [true] [2016-09-16T14:17:51,333][INFO ][o.e.n.Node ] [6-bjhwl] node name [6-bjhwl] derived from node ID; set [node.name] to override [2016-09-16T14:17:51,334][INFO ][o.e.n.Node ] [6-bjhwl] version[5.0.0], pid[21261], build[f5daa16/2016-09-16T09:12:24.346Z], OS[Linux/4.4.0-36-generic/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_60/25.60-b23] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [aggs-matrix-stats] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [ingest-common] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [lang-expression] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [lang-groovy] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [lang-mustache] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [lang-painless] [2016-09-16T14:17:51,967][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [percolator] [2016-09-16T14:17:51,968][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [reindex] [2016-09-16T14:17:51,968][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [transport-netty3] [2016-09-16T14:17:51,968][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded module [transport-netty4] [2016-09-16T14:17:51,968][INFO ][o.e.p.PluginsService ] [6-bjhwl] loaded plugin [mapper-murmur3] [2016-09-16T14:17:53,521][INFO ][o.e.n.Node ] [6-bjhwl] initialized [2016-09-16T14:17:53,521][INFO ][o.e.n.Node ] [6-bjhwl] starting ... [2016-09-16T14:17:53,671][INFO ][o.e.t.TransportService ] [6-bjhwl] publish_address {192.168.8.112:9300}, bound_addresses {{192.168.8.112:9300} [2016-09-16T14:17:53,676][WARN ][o.e.b.BootstrapCheck ] [6-bjhwl] max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144] [2016-09-16T14:17:56,731][INFO ][o.e.h.HttpServer ] [6-bjhwl] publish_address {192.168.8.112:9200}, bound_addresses {[::1]:9200}, {192.168.8.112:9200} [2016-09-16T14:17:56,732][INFO ][o.e.g.GatewayService ] [6-bjhwl] recovered [0] indices into cluster_state [2016-09-16T14:17:56,748][INFO ][o.e.n.Node ] [6-bjhwl] started ``` 没有过多的细节,我们可以看到我们节点名 “6-bjhwl”(在您的例子中将会不一样)已经启动,并且选举它自己作为一个单个集群中的 **Master**。不用担心目前该 **Master** 到底意味着什么。这里重要的事情是我们已经在一个集群上启动了一个节点。 像前面提到的一样,我们可以覆盖集群或者节点的名称。在命令行中启动 **Elasticsearch** 时是可以做到的,如下所示 :  ``` ./elasticsearch -Ecluster.name=my_cluster_name -Enode.name=my_node_name ``` 另外需要注意到 **http** 那行关于 **HTTP** 地址(**192.168.8.112**)和端口(**9200**)的信息。默认情况下,**Elasticsearch** 使用端口 **9200** 来访问它的 **REST API**。如果有必要,该端口也可以配置。