NoNodeAvailableException[None of the configured nodes are available

package com.ai.slp.product.dubbo;



import java.net.InetSocketAddress;



import org.elasticsearch.action.search.SearchResponse;

import org.elasticsearch.client.Client;

import org.elasticsearch.client.transport.TransportClient;

import org.elasticsearch.common.settings.Settings;

import org.elasticsearch.common.transport.InetSocketTransportAddress;



import com.ai.opt.sdk.appserver.DubboServiceStart;



public class Test {



	public static void main(String args) {

		try{

		  //Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("node.name", "test").build();

			Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("client.transport.sniff", "true").put("client.transport.ignore_cluster_name", "true").build();

			//Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("cluster.name", "testUp").build();

			TransportClient client = TransportClient.builder().settings(settings).build();

		   client.addTransportAddress(new InetSocketTransportAddress(new InetSocketAddress("112.9.116.188",9700)));//云端

		  // client.addTransportAddress(new InetSocketTransportAddress(new InetSocketAddress("192.168.1.15",9700)));//本地

		   System.out.println(client);

		   SearchResponse response = client.prepareSearch().execute().actionGet();//如果连接的是注释的本地ip，该段代码不报错，..反之报错

		   System.out.println(response);

		}catch(Exception e){

			e.printStackTrace();

		}

	}

}

我在本地（192.168.1.15）和云端分别部署了一台服务器，当我执行上面的代码的时候，如果地址是用的本地，可以正确获取到ElasticSearch的索引，但是如果连接云端则获取不到，我用两种方法来解决了这个问题：
1.是在云端启动服务器的时候，在Elasticsearch.yml里面添加了node.name=test,之后
Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("node.name", "test").build();来获取settings，这样也可以获取到云端对应的索引
2.用该方式Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("client.transport.sniff", "true").put("client.transport.ignore_cluster_name", "true").build();获取settings，但是需要去掉put("client.transport.sniff", "true")方可正确执行，参照改的。[/url]
我想问的是，用第2种方式在不修改Settings settings = Settings.settingsBuilder().put("client.transport.ping_timeout", "60s").put("client.transport.sniff", "true").put("client.transport.ignore_cluster_name", "true").build();的情况下如何成功的获取索引？