Springboot集成ES啟動報錯

報錯內容

　　None of the configured nodes are available

elasticsearch.yml配置

cluster.name: ftest
node.name: node-72
node.master: true
node.data: true
network.host: 112.122.245.212
http.port: 39200
transport.tcp.port: 39300
discovery.zen.ping.unicast.hosts: ["127.0.0.1"]
discovery.zen.ping.unicast.hosts.resolve_timeout: 30s
#index.codec: best_compression
http.cors.allow-origin: "/.*/"
http.cors.enabled: true
path.repo: ["/home/xxx/backups"]

?

Java客戶端配置

import com.xxx.commons.log.BaseLogger;
import com.xxx.data.elasticsearch.core.ElasticsearchTemplate;
import java.net.InetAddress;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class ElasticsearchConfiguration extends BaseLogger {private static TransportClient transport = null;@Value("${elasticsearch.cluster.sniff:true}")private Boolean sniff;@Value("${elasticsearch.cluster.name:elasticsearch}")private String clusterName;@Value("${elasticsearch.cluster.hostname:localhost}")private String hostname;@Value("${elasticsearch.cluster.port:9300}")private int port;public ElasticsearchConfiguration() {}@Bean(name = {"elasticsearchTemplate"})public ElasticsearchTemplate elasticsearchTemplate() {return new ElasticsearchTemplate(this.client());}@Beanpublic Client client() {if (transport == null) {Settings settings = Settings.builder().put("client.transport.sniff", this.sniff).put("cluster.name", this.clusterName).build();this.logger.info("connection elasticserch info : hostname:{}, port: {}", this.hostname, this.port);transport = new PreBuiltTransportClient(settings, new Class[0]);String[] hostnames = this.hostname.split(",");try {for(int i = 0; i < hostnames.length; ++i) {this.logger.info("鏈接es=======>:{}", hostnames[i]);TransportAddress transportAddress = new InetSocketTransportAddress(InetAddress.getByName(hostnames[i]), this.port);transport.addTransportAddresses(new TransportAddress[]{transportAddress});}return transport;} catch (Exception var5) {this.logger.error("", var5);return null;}} else {return null;}}
}

?

ES客戶端屬性配置

<profile><id>test-HA</id><properties><!--系統配置--><server.bind.host>0.0.0.0</server.bind.host><server.bind.port>30030</server.bind.port><!--elasticsearch配置--><elasticsearch.cluster.name>fans</elasticsearch.cluster.name><elasticsearch.cluster.hostname>112.122.245.212</elasticsearch.cluster.hostname><elasticsearch.cluster.port>39200</elasticsearch.cluster.port>
</profile>

?

問題追蹤

在異常棧中定位到 org.elasticsearch.client.transport.TransportClientNodesService#ensureNodesAreAvailable

繼續找到 org.elasticsearch.client.transport.TransportClientNodesService#execute

this.nodes變量的添加邏輯是在?org.elasticsearch.client.transport.TransportClientNodesService$SimpleNodeSampler#doSample

this.nodes變量保存了可用的ES連接節點信息，從上圖可以看出，ReceiveTimeoutTransportException。很明顯，連接超時了。

直接訪問es ip+端口可以獲得如下信息。

按理配置是沒有問題的。后來突然意識到 “transport” 這個關鍵字，然后發覺端口配置錯誤了。

總結一下es連接異常原因

?1、es服務端沒有啟動

? ? 2、cluster.name?不匹配

? ? 3、端口寫錯，java客戶端要配置?transport.tcp.port: 39300。

以上3條逐個排查，多半問題就解決了。