Question

当我通过Spring-Boot可运行的jar文件独立启动Eureka和Zuul时，一切似乎都运行正常。但是当我尝试在Docker容器中运行每个并使用Docker-Compose连接它们时，Zuul网关无法找到Eureka服务器。

搬运工-compose.yml：

version: '3.6'

services:

 eureka-serviceregistry:
  container_name: serviceregistry
  build: ./ServiceRegistry
  ports:
   - "8761:8761"
  hostname: serviceregistry
  environment:
    eureka.client.serviceUrl.defaultZone: http://serviceregistry:8761/eureka/

 zuul-edgeservice:
  container_name: gateway
  build: ./ServiceGateway
  ports:
   - "8080:8080"
  hostname: gateway
  environment:
      eureka.client.serviceUrl.defaultZone: http://serviceregistry:8761/eureka/

Eureka Dockerfile：

FROM openjdk:8-jdk-alpine

# Add Spring Boot app.jar to Container
COPY /build/libs/ServiceRegistry-0.0.1-SNAPSHOT.jar /usr/local/ServiceRegistry.jar

EXPOSE 8761

# Fire up our Spring Boot app by default
ENTRYPOINT [ "sh", "-c", "java -Djava.security.egd=file:/dev/./urandom -jar /usr/local/ServiceRegistry.jar" ]

Eureka application.properties：

server.port=8761

spring.application.name=EurekaServiceRegistry

eureka.client.register-with-eureka=true
eureka.client.fetch-registry=false
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka
eureka.instance.hostname=EurekaServiceRegistry

logging.level.com.netflix.eureka=INFO
logging.level.com.netflix.discovery=INFO

Eureka Spring-Boot课程：

@EnableEurekaServer
@SpringBootApplication
public class QQServiceRegistry {

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

Zuul Dockerfile：

FROM openjdk:8-jdk-alpine

# Add Spring Boot app.jar to Container
COPY /build/libs/ServiceGateway-0.0.1-SNAPSHOT.jar /usr/local/ServiceGateway.jar

EXPOSE 8080

# Fire up our Spring Boot app by default
ENTRYPOINT [ "sh", "-c", "java -Djava.security.egd=file:/dev/./urandom -jar /usr/local/ServiceGateway.jar" ]

Zuul application.properties：

zuul.routes.auth.path=/enterprise_service/**
zuul.routes.auth.service-id=ENTERPRISE_SERVICE
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka

Zuul Spring-Boot课程：

@EnableZuulProxy
@SpringBootApplication
public class ServiceGateway {

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

Root build.gradle文件：

buildscript {
    ext {
        springBootVersion = '2.0.1.RELEASE'
    }
    repositories {
        jcenter()
    }
    dependencies {
        classpath "org.jfrog.buildinfo:build-info-extractor-gradle:4+"
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

subprojects {
    apply plugin: 'java'
    apply plugin: 'eclipse'
    apply plugin: 'idea'
    apply plugin: 'org.springframework.boot'
    apply plugin: 'io.spring.dependency-management'
    apply plugin: 'com.jfrog.artifactory'
    apply plugin: 'maven-publish'

    sourceCompatibility = 1.8
    targetCompatibility = 1.8

    artifactory {
        contextUrl = "${artifactory_contextUrl}"
        publish {
            repository {
                repoKey = 'gradle-dev-local'
                username = "${artifactory_user}"
                password = "${artifactory_password}"
                maven = true
            }
            defaults {
                publications ('mavenJava')
            }
        }
        resolve {
            repository {
                repoKey = 'gradle-dev'
                username = "${artifactory_user}"
                password = "${artifactory_password}"
                maven = true
            }
        }
    }

    publishing {
        publications {
            mavenJava(MavenPublication) {
                from components.java
            }
        }
    }

    artifactoryPublish {
        dependsOn assemble
    }

    dependencyManagement {
        imports {
            mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Finchley.M8'
        }
    }

    repositories {
        maven {
            url 'https://repo.spring.io/libs-milestone'
        }
    }

    dependencies {
        compile('org.springframework.boot:spring-boot-starter-actuator')
        compile('org.springframework.boot:spring-boot-starter-web')
        testCompile('org.springframework.boot:spring-boot-starter-test')
    }

   bootJar {
        launchScript()
    }
}

Eureka子项目gradle文件：

group = 'my.company.service.infrastructure.registry'
version = '0.0.1-SNAPSHOT'

dependencies {
    compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-server')
}

Zuul子项目gradle文件：

group = 'my.company.service.infrastructure.gateway'
version = '0.0.1-SNAPSHOT'

dependencies {
    compile('org.springframework.cloud:spring-cloud-starter-netflix-zuul')
    compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
}

在Zuul日志中，当它试图向Eureka注册时，这种错误模式一遍又一遍：

2018-04-11 15：38：20.136 INFO 6 --- [nfoReplicator-0]＆gt; com.netflix.discovery.DiscoveryClient：DiscoveryClient_UNKNOWN / gateway：＆gt;注册服务......   2018-04-11 15：38：20.139 ERROR 6 --- [nfoReplicator-0]＆gt; c.n.d.s.t.d.RedirectingEurekaHttpClient：请求执行错误

com.sun.jersey.api.client.ClientHandlerException：java.net.ConnectException：＆gt;连接被拒绝（连接被拒绝）     在＆gt; com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle（ApacheHttpClient4＆gt; Handler.java：187）〜[jersey-apache-client4-1.19.1.jar！/：1.19.1]     at＆gt; com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle（GZIPContentEn＆gt; codingFilter.java：123）〜[jersey-client-1.19.1.jar！/：1.19.1]     at＆gt; com.netflix.discovery.EurekaIdentityHeaderFilter.handle（EurekaIdentityHeaderFil＆gt; ter.java:27）〜[eureka-client-1.8.6.jar！/：1.8.6]     在com.sun.jersey.api.client.Client.handle（Client.java:652）〜[jersey-client-＆gt; 1.19.1.jar！/：1.19.1]     在com.sun.jersey.api.client.WebResource.handle（WebResource.java:682）〜＆gt;＆gt; [jersey-client-1.19.1.jar！/：1.19.1]     在com.sun.jersey.api.client.WebResource.access $ 200（WebResource.java:74）〜＆gt; [jersey-client-1.19.1.jar！/：1.19.1]     在com.sun.jersey.api.client.WebResource $ Builder.post（WebResource.java:570）＆gt;〜[jersey-client-1.19.1.jar！/：1.19.1]     at＆gt; com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.re> gister（AbstractJerseyEurekaHttpClient.java:56）〜[eureka-client-＆gt; 1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpCli＆gt; ent.execute（MetricsCollectingEurekaHttpClient.java:73）〜[eureka-client-＆gt; 1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.ex> ecuteOnNewServer（RedirectingEurekaHttpClient.java:118)~ [eureka-client-＆gt; 1.8.6.jar！/：1.8.6]     在＆gt; com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.ex＆gt; ecute（RedirectingEurekaHttpClient.java:79）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.exec＆gt; ute（RetryableEurekaHttpClient.java:119）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.exec＆gt; ute（SessionedEurekaHttpClient.java:77）[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）[eureka-client-1.8.6.jar！/：1.8.6]     在com.netflix.discovery.DiscoveryClient.register（DiscoveryClient.java:829）＆gt; [eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.InstanceInfoReplicator.run（InstanceInfoReplicator.java:10>4）[eureka-client-1.8.6.jar！/：1.8.6]     at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）＆gt; [na：1.8.0_151]     at java.util.concurrent.FutureTask.run（FutureTask.java:266)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 201＆gt;（ScheduledThreadPoolExecutor.java:180)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（Schedu＆gt; ledThreadPoolExecutor.java：293）[na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）＆gt; [na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）＆gt; [na：1.8.0_151]     在java.lang.Thread.run（Thread.java:748）[na：1.8.0_151]   引起：java.net.ConnectException：连接被拒绝（连接被拒绝）     at java.net.PlainSocketImpl.socketConnect（Native Method）〜[na：1.8.0_151]     at＆gt; java.net.AbstractPlainSocketImpl.doConnect（AbstractPlainSocketImpl.java:350）〜＆gt; [na：1.8.0_151]     at＆gt; java.net.AbstractPlainSocketImpl.connectToAddress（AbstractPlainSocketImpl.java:>206）〜[na：1.8.0_151]     在＆gt; java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:188）〜＆gt; [na：1.8.0_151]     在java.net.SocksSocketImpl.connect（SocksSocketImpl.java:392）〜＆gt; [na：1.8.0_151]     在java.net.Socket.connect（Socket.java:589）〜[na：1.8.0_151]     at＆gt; org.apache.http.conn.scheme.PlainSocketFactory.connectSocket（PlainSocketFactory＆gt; .java:121)~ [httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection（Defaul＆gt; tClientConnectionOperator.java：180）〜[httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.conn.AbstractPoolEntry.open（AbstractPoolEntry.java:144）〜＆gt; [httpclient-4.5.5.jar！/：4.5.5]     在＆gt; org.apache.http.impl.conn.AbstractPooledConnAdapter.open（AbstractPooledConnAdap＆gt; ter.java：134）〜[httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.client.DefaultRequestDirector.tryConnect（DefaultRequestDir＆gt; ector.java:610)~ [httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.client.DefaultRequestDirector.execute（DefaultRequestDirect＆gt; or.java:445)~ [httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.client.AbstractHttpClient.doExecute（AbstractHttpClient.jav＆gt; a：835）〜[httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.client.CloseableHttpClient.execute（CloseableHttpClient.jav＆gt; a：118）〜[httpclient-4.5.5.jar！/：4.5.5]     at＆gt; org.apache.http.impl.client.CloseableHttpClient.execute（CloseableHttpClient.jav＆gt; a：56）〜[httpclient-4.5.5.jar！/：4.5.5]     at＆gt; com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle（ApacheHttpClient4＆gt; Handler.java：173）〜[jersey-apache-client4-1.19.1.jar！/：1.19.1]     ...省略了29个常见帧

2018-04-11 15：38：20.140 WARN 6 --- [nfoReplicator-0]＆gt; c.n.d.s.t.d.RetryableEurekaHttpClient：请求执行失败，使用＆gt;消息：java.net.ConnectException：连接被拒绝（连接被拒绝）   2018-04-11 15：38：20.140 WARN 6 --- [nfoReplicator-0]＆gt; com.netflix.discovery.DiscoveryClient：DiscoveryClient_UNKNOWN / gateway - ＆gt;注册失败无法在任何已知服务器上执行请求

com.netflix.discovery.shared.transport.TransportException：无法在任何已知服务器上执行＆gt;请求     at＆gt; com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.exec＆gt; ute（RetryableEurekaHttpClient.java:111）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.exec＆gt; ute（SessionedEurekaHttpClient.java:77）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）〜[eureka-client-1.8.6.jar！/：1.8.6]     在com.netflix.discovery.DiscoveryClient.register（DiscoveryClient.java:829）＆gt;〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.InstanceInfoReplicator.run（InstanceInfoReplicator.java:10>4）[eureka-client-1.8.6.jar！/：1.8.6]     at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）＆gt; [na：1.8.0_151]     at java.util.concurrent.FutureTask.run（FutureTask.java:266)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 201＆gt;（ScheduledThreadPoolExecutor.java:180)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（Schedu＆gt; ledThreadPoolExecutor.java：293）[na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）＆gt; [na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）＆gt; [na：1.8.0_151]     在java.lang.Thread.run（Thread.java:748）[na：1.8.0_151]

2018-04-11 15：38：20.141 WARN 6 --- [nfoReplicator-0]＆gt; c.n.discovery.InstanceInfoReplicator：＆gt;实例信息复制器出现问题

com.netflix.discovery.shared.transport.TransportException：无法在任何已知服务器上执行＆gt;请求     at＆gt; com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.exec＆gt; ute（RetryableEurekaHttpClient.java:111）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator $ 1.ex＆gt; ecute（EurekaHttpClientDecorator.java:59）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.exec＆gt; ute（SessionedEurekaHttpClient.java:77）〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.regi＆gt; ster（EurekaHttpClientDecorator.java:56）〜[eureka-client-1.8.6.jar！/：1.8.6]     在com.netflix.discovery.DiscoveryClient.register（DiscoveryClient.java:829）＆gt;〜[eureka-client-1.8.6.jar！/：1.8.6]     at＆gt; com.netflix.discovery.InstanceInfoReplicator.run（InstanceInfoReplicator.java:10>4）〜[eureka-client-1.8.6.jar！/：1.8.6]     at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511）＆gt; [na：1.8.0_151]     at java.util.concurrent.FutureTask.run（FutureTask.java:266)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 201＆gt;（ScheduledThreadPoolExecutor.java:180)[na:1.8.0_151]     at＆gt; java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（Schedu＆gt; ledThreadPoolExecutor.java：293）[na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）＆gt; [na：1.8.0_151]     at＆gt; java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）＆gt; [na：1.8.0_151]     在java.lang.Thread.run（Thread.java:748）[na：1.8.0_151]

2018-04-11 15：38：50.043 ERROR 6 --- [tbeatExecutor-0]＆gt; c.n.d.s.t.d.RedirectingEurekaHttpClient：请求执行错误

Answer 1

问题是YAML语法错误。

以下docker-compose.yml有效。请注意环境部分。

version: '3.6'

services:

  eureka-serviceregistry:
    container_name: serviceregistry
    build: ./ServiceRegistry
    ports:
      - 8761:8761
    hostname: serviceregistry
    environment:
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://serviceregistry:8761/eureka

  zuul-edgeservice:
    container_name: gateway
    build: ./ServiceGateway
    ports:
      - 8080:8080
    hostname: gateway
    environment:
      - EUREKA_CLIENT_SERVICEURL_DEFAULTZONE=http://serviceregistry:8761/eureka

Answer 2

尝试替换为spring.application.name = serviceregistry
eureka服务器下的application.properties中的eureka.instance.hostname = serviceregistry 。

Zuul网关无法连接到Docker-Compose

2 个答案: