I have a Eureka Server, Config Server and Spring-Boot Service. I have created a docker compose file like this:
version: '3'
services:
user-service:
container_name: user-service-container
image: user-service:latest
build:
context: ./user-service
dockerfile: DockerFile
hostname: user-service
ports:
- "8082:8082"
depends_on:
- postgresdb
- eureka-service
- config-server
environment:
management.context-path : /userservice
hostName : user-service
EUREKA_HOST: eureka-service
EUREKA_PORT: 8761
config-server:
container_name: config-server-container
image: config-server:latest
build:
context: ./config-server
dockerfile: DockerFile
hostname: config-server
ports:
- "8081:8081"
depends_on:
- eureka-service
environment:
management.context-path : /config
hostName : config-server
SPRING_PROFILES_ACTIVE : registration-first
EUREKA_HOST: eureka-service
EUREKA_PORT: 8761
eureka-service:
container_name: eureka-service-container
image: eureka-service:latest
build:
context: ./eureka-service
dockerfile: DockerFile
hostname: eureka-service
ports:
- "8761:8761"
postgresdb:
container_name: postgres-db-container
image: postgres:10.5
hostname: postgres
ports:
- "5432:5432"
With this configuration Config Server can register itself to Eureka Server, however configuration part of the User Service throws below exception:
2018-09-07T18:53:17.869040200Z 2018-09-07 18:53:17.868 INFO 6 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2018-09-07T18:53:18.331651100Z 2018-09-07 18:53:18.331 INFO 6 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2018-09-07T18:53:18.332055700Z 2018-09-07 18:53:18.331 WARN 6 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/user-service/registered-config-server,dev": Connection refused (Connection refused); nested exception is java.net.ConnectException: Connection refused (Connection refused)
2018-09-07T18:53:18.334406300Z 2018-09-07 18:53:18.334 INFO 6 --- [ main] c.k.d.u.UserServiceApplication : The following profiles are active: registered-config-server,dev
2018-09-07T18:53:18.371334800Z 2018-09-07 18:53:18.370 INFO 6 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@4d1c00d0: startup date [Fri Sep 07 18:53:18 UTC 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@13969fbe
From this exception, I understand that User Service connects to Euroka Server but it tries to connect to Config Server via a wrong URL (i.e. http://localhost:8888 )
Euroka Server App Properties:
spring.application.name=eureka-server
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
Config Server App Properties:
spring:
cloud:
config:
server:
git :
uri: https://bitbucket.org/blabla
username: blabla
password: ***
discovery:
enabled: true
service-id: config-server
server:
port: 8081
---
spring:
application:
name: config-server
profiles: registration-first
eureka:
client:
registerWithEureka: true
fetchRegistry: true
serviceUrl:
defaultZone: http://${eureka.host:localhost}:${eureka.port:8761}/eureka/
instance:
appname: config-server
hostname: ${hostName}
statusPageUrlPath: ${management.context-path}/info
healthCheckUrlPath: ${management.context-path}/health
preferIpAddress: true
metadataMap:
instanceId: ${spring.application.name}:${server.port}
User Service Application Properties:
endpoints:
enabled: false
info:
enabled: true
health:
enabled: true
metrics:
enabled: true
refresh:
enabled: true
eureka:
client:
fetchRegistry: true
registerWithEureka: true
serviceUrl:
defaultZone: http://${eureka.host:localhost}:${eureka.port:8761}/eureka/
instance:
hostname: ${hostName}
statusPageUrlPath: ${management.context-path}/info
healthCheckUrlPath: ${management.context-path}/health
preferIpAddress: true
metadataMap:
instanceId: ${spring.application.name}:${server.port}
spring.jpa.database: POSTGRESQL
spring.datasource.platform: postgres
spring.jpa.show-sql: true
spring.jpa.hibernate.ddl-auto: update
spring.database.driverClassName: org.postgresql.Driver
spring.datasource.url: jdbc:postgresql://postgresdb:5432/postgres
spring.datasource.username: postgres
spring.datasource.password: postgres
User Service Bootstrap.yml:
spring:
profiles:
active: registered-config-server,dev
application:
name: user-service
server.port: 8082
---
spring:
profiles: known-config-server
cloud:
config:
uri: http://localhost:8080
---
spring:
profiles: registered-config-server
cloud:
config:
discovery:
enabled: true
serviceId: config-server
But when I run these applications on my local PC without docker they work properly.
Does anyone have any suggestions?
EDIT: UserService Docker File:
FROM java:8
EXPOSE 8082
ADD /target/user-service-0.0.1-SNAPSHOT.jar user-service.jar
CMD java -jar user-service.jar
config-server docker file
FROM java:8
EXPOSE 8081
ADD /target/config-server-0.0.1-SNAPSHOT.jar config-server.jar
CMD java -jar config-server.jar
eureka-server docker file
FROM java:8
EXPOSE 8761
ADD /target/eureka-service-0.0.1-SNAPSHOT.jar eureka-service.jar
CMD java -jar eureka-service.jar
localhostmeans the host; with docker,localhostmeans the container, so it's different for each container. – Constantin Galbenuspring.application.nameenvironment variable accordingly for each service (user and config) in each service environment. In this way the eureka client register itself correctly. I.e. for user service, this should beuser-service, the hostname of this service in the docker network. – Constantin Galbenu