（一）官網下載tar包 wget..... （二）解壓 （三）驗證 出現如下資訊，才代表安裝成功

[[email protected] bin]# curl localhost:9200
{
  "name" : "administrator",
  "cluster_name" : "spring-boot",
  "cluster_uuid" : "EZJYVN7TRPOSMlr49YPzsA",
  "version" : {
    "number" : "5.5.1",
    "build_hash" : "19c13d0",
    "build_date" : "2017-07-18T20:44:24.823Z",
    "build_snapshot" : false,
    "lucene_version" : "6.6.0"
  },
  "tagline" : "You Know, for Search"
}