Elasticsearch是一个基于Apache Lucene(TM)的开源搜索引擎。无论在开源还是专有领域，Lucene可以被认为是迄今为止最先进、性能最好的、功能最全的搜索引擎库。

下面介绍一下Mac下安装Elasticsearch的步骤

更新brew

brew update

安装java8

brew cask install homebrew/cask-versions/java8

安装es

brew install elasticsearch

运行es

brew services start elasticsearch

本地浏览器访问http://localhost:9200

{
name: "90LNUen",
cluster_name: "elasticsearch_shengyulong",
cluster_uuid: "vMztQUmQS7-_aJ1b37URYg",
version: {
    number: "6.6.2",
    build_flavor: "oss",
    build_type: "tar",
    build_hash: "3bd3e59",
    build_date: "2019-03-06T15:16:26.864148Z",
    build_snapshot: false,
    lucene_version: "7.6.0",
    minimum_wire_compatibility_version: "5.6.0",
    minimum_index_compatibility_version: "5.0.0",
},
tagline: "You Know, for Search",
}

安装Kibana
Kibana是ES的一个配套工具，可以让用户在网页中与ES进行交互

brew install kibana

启动Kibana

brew services start kibana

本地浏览器访问

http://localhost:5601

查看集群健康状态

localhost:9200/_cat/health?v

green:一切都很好（集群功能齐全）
yellow:所有数据都可用，但尚未分配一些副本（群集功能齐全）
Red:某些数据由于某种原因不可用（群集部分功能）