java.net.ConnectException：連接被尤里克服務器拒絕

Question

我正在嘗試創建一個簡單的eureka服務器，它將檢測其他微服務，並且所有其他微服務都可以通過它進行通信。 我正在使用spring boot 2.0.3 。

我的尤里卡服務器

EurekaServerApplication.java 文件（尤里卡服務器）

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

HelloServerApplication application.property（尤里卡服務器）

spring.application.name=eureka-server
server.port=8070

application.yml（尤里卡服務器）

eureka:
  client:
    registerWithEureka: false
    fetchRegistry: false
    server:
      waitTimeInMsWhenSyncEmpty: 0

我的尤里卡客戶

HelloServerApplication.java（尤里卡客戶端）

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


@EnableDiscoveryClient
@SpringBootApplication
public class HelloServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(HelloServerApplication.class, args);
    }
}

application.yml（尤里卡客戶端）

spring:
  application:
    name: hello-server

server:
  port: 8071

eureka:
  client:
    registerWithEureka: true
    fetchRegistry: true
    serviceUrl:
      defaultZone: http://localhost:8070/eureka/
  instance:
    hostname: localhost

當我運行 eureka 服務器時，我可以通過http://localhost:8070/訪問服務器，但是當我嘗試運行 eureka 客戶端HelloServerApplication.java 時，eureka 服務器顯示以下錯誤並且 eureka 客戶端關閉 -

尤里卡服務器上的錯誤

2018-06-25 17:26:30.250 ERROR 4635 --- [get_localhost-3] c.n.e.cluster.ReplicationTaskProcessor   : Network level connection to peer localhost; retrying after delay

com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    at com.netflix.eureka.cluster.DynamicGZIPContentEncodingFilter.handle(DynamicGZIPContentEncodingFilter.java:48) ~[eureka-core-1.9.2.jar:1.9.2]
    at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.9.2.jar:1.9.2]
    at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:570) ~[jersey-client-1.19.1.jar:1.19.1]
    at com.netflix.eureka.transport.JerseyReplicationClient.submitBatchUpdates(JerseyReplicationClient.java:116) ~[eureka-core-1.9.2.jar:1.9.2]
    at com.netflix.eureka.cluster.ReplicationTaskProcessor.process(ReplicationTaskProcessor.java:80) ~[eureka-core-1.9.2.jar:1.9.2]
    at com.netflix.eureka.util.batcher.TaskExecutors$BatchWorkerRunnable.run(TaskExecutors.java:187) [eureka-core-1.9.2.jar:1.9.2]
    at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_171]
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_171]
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_171]
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_171]
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_171]
    at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_171]
    at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.5.jar:4.5.5]
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.5.jar:4.5.5]
    at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]
    ... 10 common frames omitted

我嘗試將兩側的所有屬性移動到bootstrap.application文件，但沒有用。

我嘗試了這個解決方案： https : //github.com/spring-cloud/spring-cloud-netflix/issues/2893 ，但沒有用。

Answer 1

服務器端和客戶端的 eureka 配置都非常敏感。 服務 url 和默認區域配置應編寫如下：

 service-url (Not serviceUrl):
   defaultZone(Not default-zone) : http://localhost:portNumberHere/eureka

Answer 2

盡管有以下設置，但 eureka 似乎試圖連接到自己： eureka.client.register-with-eureka=false eureka.client.fetch-registry=false 你有兩個選項可以解決這個問題 1-保留 eureka 的默認端口 2 -將下面添加到您的 eureka 服務器的 application.properties eureka.server.maxThreadsForPeerReplication=0

Answer 3

YAML 和 application.properties 文件中的以下配置對我有用。

Naming-server ：YAML 文件中配置的名稱。

應用程序.yml

eureka.client.service-url.defaultZone: http://naming-server:8761/eureka

此外，在 Eureka 屬性文件中，請確保您已按照上述答案中的說明放置以下內容

應用程序屬性

eureka.client.register-with-eureka = false
eureka.client.fetch-registry = false