{
  "name" : "9iEfLoa",   //node名称
  "cluster_name" : "elasticsearch", //cluster_name: 集群名称（默认的集群名称就是elasticsearch） 修改集群名称：elasticsearch.yml
  "cluster_uuid" : "uwuK0gQhSVmFpaoiFVhH5g",
  "version" : {
    "number" : "6.5.4", //version.number: 5.2.0，es版本号
    "build_flavor" : "default",
    "build_type" : "zip",
    "build_hash" : "d2ef93d",
    "build_date" : "2018-12-17T21:17:40.758843Z",
    "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"
}