Mac安装Elasticsearch时提示：No Java runtime present, requesting install.

时间：2022-01-07 21:56:21

没有安装java的童鞋可以先去安装一下，地址：https://www.java.com/zh_CN/

安装之后还是提示如下错误：

 ➜  elasticsearch-2.4.3 bin/elasticsearch
 No Java runtime present, requesting install.
 ➜  elasticsearch-2.4.3 java -version
 No Java runtime present, requesting install.

执行如下解决方案：

 #  首先 cd elasticsearch-2.4.3(此处是指进入你下载并解压后的elasticsearch文件)

 ➜  Downloads cd elasticsearch-2.4.3

 ➜  elasticsearch-2.4.3

 ➜  elasticsearch-2.4.3 vim .bash_profile
 # 在文件中添加如下两句：

 # export JAVA_HOME="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home"

 # export PATH=${JAVA_HOME}/bin:$PATH

 ➜  elasticsearch-2.4.3 source .bash_profile
 ➜  elasticsearch-2.4.3 java -version
 java version "1.8.0_151"

 Java(TM) SE Runtime Environment (build 1.8.0_151-b12)

 Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

至此，该问题解决。

继续执行2步，即可验证Elasticsearch是否安装成功：

　　第1步：运行elasticsearch文件，如下：

 ➜  elasticsearch-2.4.3 bin/elasticsearch

 [2017-11-27 14:10:49,539][INFO ][node                     ] [Googam] version[2.4.3], pid[18853], build[d38a34e/2016-12-07T16:28:56Z]

 [2017-11-27 14:10:49,539][INFO ][node                     ] [Googam] initializing ...

 [2017-11-27 14:10:50,102][INFO ][plugins                  ] [Googam] modules [reindex, lang-expression, lang-groovy], plugins [], sites []

 [2017-11-27 14:10:50,132][INFO ][env                      ] [Googam] using [1] data paths, mounts [[/ (/dev/disk1)]], net usable_space [185.6gb], net total_space [232.5gb], spins? [unknown], types [hfs]

 [2017-11-27 14:10:50,132][INFO ][env                      ] [Googam] heap size [990.7mb], compressed ordinary object pointers [true]

 [2017-11-27 14:10:50,133][WARN ][env                      ] [Googam] max file descriptors [10240] for elasticsearch process likely too low, consider increasing to at least [65536]

 [2017-11-27 14:10:51,924][INFO ][node                     ] [Googam] initialized

 [2017-11-27 14:10:51,924][INFO ][node                     ] [Googam] starting ...

 [2017-11-27 14:10:51,989][INFO ][transport                ] [Googam] publish_address {127.0.0.1:9300}, bound_addresses {[fe80::1]:9300}, {[::1]:9300}, {127.0.0.1:9300}

 [2017-11-27 14:10:51,993][INFO ][discovery                ] [Googam] elasticsearch/TxOmRFiySBWHhJAAr8N59g

 [2017-11-27 14:10:55,026][INFO ][cluster.service          ] [Googam] new_master {Googam}{TxOmRFiySBWHhJAAr8N59g}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-join(elected_as_master, [0] joins received)

 [2017-11-27 14:10:55,039][INFO ][http                     ] [Googam] publish_address {127.0.0.1:9200}, bound_addresses {[fe80::1]:9200}, {[::1]:9200}, {127.0.0.1:9200}

 [2017-11-27 14:10:55,039][INFO ][node                     ] [Googam] started

 [2017-11-27 14:10:55,060][INFO ][gateway                  ] [Googam] recovered [0] indices into cluster_state

　　第2步：打开浏览器访问:http://localhost:9200/，看到如下json结果集，表明安装成功：

{

  "name" : "Googam",

  "cluster_name" : "elasticsearch",

  "cluster_uuid" : "lqQ7DANKR3C3skh1JKJBdA",

  "version" : {

    "number" : "2.4.3",

    "build_hash" : "d38a34e7b75af4e17ead16f156feffa432b22be3",

    "build_timestamp" : "2016-12-07T16:28:56Z",

    "build_snapshot" : false,

    "lucene_version" : "5.5.2"

  },

  "tagline" : "You Know, for Search"

}

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