Spring 数据 ElasticSearch - 无法连接到节点

Question

我正在尝试在 Spring MVC 应用程序中配置 ElasticSearch 存储库。我正在使用 Spring Data ElasticSearch 版本：2.0.7 和 ElasticSearch Server 2.4.4。

我确定 ElasticNode 可以正常工作，这里是示例输出

$ curl -X GET http://127.0.0.1:9200/
{
  "name" : "Tattoo",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "dX0lPfNnSA6vxGqhzVEuSg",
  "version" : {
    "number" : "2.4.4",
    "build_hash" : "fcbb46dfd45562a9cf00c604b30849a6dec6b017",
    "build_timestamp" : "2017-01-03T11:33:16Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.2"
  },
  "tagline" : "You Know, for Search"
}

这是我的测试配置

@Configuration
@EnableElasticsearchRepositories(basePackages = "com.somepackage.repo.elastic")
public class ElasticSearchConfig {

@Bean
public ElasticsearchTemplate elasticsearchTemplate() throws UnknownHostException {
    return new ElasticsearchTemplate(nodeClient());
}

@Bean
public TransportClient nodeClient() throws UnknownHostException {

    Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build();
    TransportClient client = TransportClient.builder()
            .settings(settings)
            .build();
    client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("localhost"), 9200));
    return client;

}
}

我收到应用程序无法连接到 Elastic 节点的错误，stacktrace

2017-02-17 23:34:53 INFO  transport:383 - [Impulse] failed to get node info for {#transport#-1}{127.0.0.1}{localhost/127.0.0.1:9200}, disconnecting...
ReceiveTimeoutTransportException[[][localhost/127.0.0.1:9200][cluster:monitor/nodes/liveness] request_id [1] timed out after [5002ms]]
    at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:645)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

我尝试将弹性搜索节点的版本从 1.7.1、2.4.4 和 5.2.1 更改。什么都不管用。 Spring MVC 4.3.6.RELEASE 与 Java 8

Answer 1

Transport client 通过端口 9300 与 elasticsearch 通信。所以尝试

client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("localhost"), 9300));

Answer 2

简而言之：ElasticSearch节点和TransportClient应该有相同的版本。

Spring 数据 ElasticSearch 在 2.2.0 版本中提供了 TransportClient。我在 2.4.4 版中使用 ElasticSearch 节点。我将 ES 节点降级到 2.2.0，并在配置中将端口从 9200 更改为 9300。

Spring 数据 ElasticSearch - 无法连接到节点

Spring Data ElasticSearch - cannot connect to node

elasticsearch

spring-data-elasticsearch