Spring Cloud Netflix Applications not registering to eureka when using docker-compose

I took this example https://github.com/paulc4/microservices-demo and I created 3 docker images from it, with the following Dockerfiles:

springdocker-registration:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 1111
ENTRYPOINT exec java -jar /app.jar registration

springdocker-accounts:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 2222
ENTRYPOINT exec java -jar /app.jar accounts

springdocker-web:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/microservice-demo-1.1.0.RELEASE.jar app.jar
EXPOSE 3333
ENTRYPOINT exec java -jar /app.jar web

If I run the three images separately everything works ok, the web and accounts services register to the registration service (which is an implementation of the eureka registry) and I can use my application. However when using docker-compose with the following docker-compose.yml file

version: "3.4"
services:
 registration:
  image: springdocker-registration
  ports:
   - "1111:1111"

 accounts:
  image: springdocker-accounts
  ports:
   - "2222:2222"
  links:
   - registration
  depends_on:
   - registration

 web:
  image: springdocker-web
  ports:
   - "3333:3333"
  depends_on:
   - registration
   - accounts
  links:
   - registration

the services web and accounts are not able to register to the registration service. Here are the configuration files for the applications:

registration-server.yml:

eureka:
  instance:
    hostname: localhost
  client:  
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
     defaultZone: http://localhost:1111/eureka/

server:
  port: 1111   

spring:
  thymeleaf:
    enabled: false

accounts-server.yml:


spring:
  application:
     name: accounts-service  
  freemarker:
    enabled: false           
  thymeleaf:
    cache: false            
    prefix: classpath:/accounts-server/templates/    

error:
  path: /error

server:
  port: 2222   

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:1111/eureka
  instance:
    leaseRenewalIntervalInSeconds: 5   
    preferIpAddress: true

web-server.yml

spring:
  application:
    name: web-service 
  freemarker:
    enabled: false     
  thymeleaf:
    cache: false       
    prefix: classpath:/web-server/templates/   

error:
  path: /error

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:1111/eureka
  instance:
    leaseRenewalIntervalInSeconds: 5 
    preferIpAddress: true

server:
  port: 3333

I can post the full console log of docker-compose up but I think this is the interesting point:


1: ERROR RedirectingEurekaHttpClient - Request execution error
com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)

1: ERROR DiscoveryClient - DiscoveryClient_WEB-SERVICE/e3b5e6b3396c:web-service:3333 - was unable to refresh its cache! status = Cannot execute request on any known server
com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server

Comment From: ryanjbaxter

The problem is this

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:1111/eureka

It is pointing to localhost and Eureka is no longer running on localhost, localhost in this case is the individual containers. The containers are linked together so you can just change this to

eureka:
  client:
    serviceUrl:
      defaultZone: http://registration:1111/eureka