单实例安装
安装 ElasticSearch，首先到官网下载 https://www.elastic.co/downloads/elasticsearch
下载 tar.gz 文件，下载好之后解压
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| tar -xvf elasticsearch-x.x.x.tar.gz
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进到解压好的目录里之后，就可以执行下面的命令运行了
如果看到 started 字样，说明已经启动了
再来确认一下是不是启动了
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| $ curl http://localhost:9200
{
"name" : "CW4wfvI",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "jTCyqCjbQcq9DWekXXlfSg",
"version" : {
"number" : "6.5.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "8c58350",
"build_date" : "2018-11-16T02:22:42.182257Z",
"build_snapshot" : false,
"lucene_version" : "7.5.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
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安装 ElasticSearch 的 web 前端管理界面 https://github.com/mobz/elasticsearch-head
git clone git://github.com/mobz/elasticsearch-head.gitcd elasticsearch-headnpm installnpm run start
接下来，我们用浏览器打开 http://localhost:9100
发现未连接 ElasticSearch，为什么呢？我们看到 elasticsearch-head 的文档中写了，想要用这个服务，必须在 ElasticSearch 的配置文件中开启 CORS
所以，我们修改一下 config 目录中的 elasticsearch.yml 文件，在文件的末尾添加两行
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| http.cors.enabled: true
http.cors.allow-origin: "*"
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这样之后，我们重启 ElasticSearch，再次查看，集群健康值: green (0 of 0)，已经是正常的了。
分布式安装
拷贝三份，elasticsearch-master，elasticsearch-slave1，elasticsearch-slave2
master 配置
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| cluster.name: 0xl2oot
node.name: master
node.master: true
network.host: 127.0.0.1
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| $ curl http://localhost:9200
{
"name" : "master",
"cluster_name" : "0xl2oot",
"cluster_uuid" : "jTCyqCjbQcq9DWekXXlfSg",
"version" : {
"number" : "6.5.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "8c58350",
"build_date" : "2018-11-16T02:22:42.182257Z",
"build_snapshot" : false,
"lucene_version" : "7.5.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
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slave1 配置
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| cluster.name: 0xl2oot
node.name: slave1
network.host: 127.0.0.1
http.port: 9201
discovery.zen.ping.unicast.hosts: ["127.0.0.1"]
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| curl http://localhost:9201
{
"name" : "slave1",
"cluster_name" : "0xl2oot",
"cluster_uuid" : "0fQo4KuxQhSh4g6HZmkwZA",
"version" : {
"number" : "6.5.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "8c58350",
"build_date" : "2018-11-16T02:22:42.182257Z",
"build_snapshot" : false,
"lucene_version" : "7.5.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
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slave2 配置
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| cluster.name: 0xl2oot
node.name: slave2
network.host: 127.0.0.1
http.port: 9202
discovery.zen.ping.unicast.hosts: ["127.0.0.1"]
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| $ curl http://localhost:9202
{
"name" : "slave2",
"cluster_name" : "0xl2oot",
"cluster_uuid" : "0fQo4KuxQhSh4g6HZmkwZA",
"version" : {
"number" : "6.5.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "8c58350",
"build_date" : "2018-11-16T02:22:42.182257Z",
"build_snapshot" : false,
"lucene_version" : "7.5.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
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打开 http://localhost:9100 查看
在远程的机器上进行安装
如果是在远程的服务器上或者是虚拟机上进行安装，如果有需要暴露出端口，那么需要修改 host 为 0.0.0.0
并且添加下面的一行
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| transport.host: localhost
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最新版的 Ubuntu 18.10 还需要修改防火墙配置
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| sudo ufw allow 9200 # 需要什么就暴露什么端口
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查看防火墙信息