Spring micro services eureka client is not registering with eureka server - spring

Question

I'm very new to everything about docker, spring framework... They run on localhost environment successfully, now I want to push them into docker, but always gave me error there, i got stuck on it about a week. Can someone help me figure it out PLEASE!!!
now I have eureka-server and cloud-config-server services, here is my code:
eureka-server application.yml
server:
port: 8761
spring:
application:
name: service-registration
eureka:
client:
register-with-eureka: false
fetch-registry: false
management:
security:
enabled: false
and Dockerfile:
FROM openjdk:11
COPY target/service-registration-0.0.1-SNAPSHOT.jar service-registration.jar
EXPOSE 8761
CMD ["java", "-jar", "service-registration.jar"]
Now I have cloud-config-server application.yml:
In this file, i tried to backup it on github.
From the start, I tried to change the hostname as localhost or any other hostname like service-registration, eureka-server etc... but not work, and "service-url" or "serviceUrl'....
server:
port: 9291
spring:
application:
name: cloud-config-server
profiles:
active: production
# cloud:
# config:
# server:
# git:
# uri: https://github.com/sshaunn/config-server
# clone-on-start: true
eureka:
client:
register-with-eureka: true
fetch-registry: true
serviceUrl:
defaultZone: http://service-registration:8761/eureka/
instance:
# prefer-ip-address: true
# ip-address: http://eureka-server:8761/eureka/å
hostname: service-registration
Dockerfile:
FROM openjdk:11
COPY target/cloud-config-server-0.0.1-SNAPSHOT.jar cloud-config-server.jar
EXPOSE 9291
ENTRYPOINT ["java", "-jar", "cloud-config-server.jar"]
and the docker-compose.yml file:
version: '3.7'
services:
service-registration:
image: service-registration
networks:
- eureka-server
ports:
- "8761:8761"
container_name: service-registration
hostname: service-registration
cloud-config-server:
build: cloud-config-server
networks:
- eureka-server
ports:
- "9291:9291"
depends_on:
- service-registration
container_name: cloud-config-server
hostname: service-registration
environment:
EUREKA_CLIENT_SERVICEURL_DEFAULTZONE: http://service-registration:8761/eureka
networks:
eureka-server:
name: eureka-server
driver: bridge
# route:
# image: route
# ports:
# - "9191:9191"
# container_name: api-gateway
# environment:
# EUREKA_CLIENT_SERVICEURL_DEFAULTZONE: http://service-registration:8761/eureka
The error logs here:
2022-05-29 07:22:41.713 WARN 1 --- [freshExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused (Connection refused);
2022-05-29 07:06:11.565 WARN 1 --- [tbeatExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on PUT request for "http://localhost:8761/eureka/apps/CONFIG-SERVER/service-registration:CONFIG-SERVER:9291": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused (Connection refused);

Answer 1

Ok, I dont know why but I set up a docker-compose.yml file like this and it works:
Note, I set up environment about "service-url" defaultZone in docker-compose.yml file.
version: '3.7'
services:
service-registration:
container_name: service-registration
build:
context: ./service-registration
dockerfile: Dockerfile
ports:
- "8761:8761"
cloud-config-server:
container_name: cloud-config-server
build:
context: ./cloud-config-server
dockerfile: Dockerfile
environment:
- eureka.client.service-url.defaultZone=http://service-registration:8761/eureka
depends_on:
- service-registration
ports:
- "9191:9191"
route:
container_name: route
build:
context: ./route
dockerfile: Dockerfile
environment:
- eureka.client.service-url.defaultZone=http://service-registration:8761/eureka
depends_on:
- service-registration
- employee
- income
ports:
- "9291:9291"
employee:
container_name: employee
build:
context: ./employee
dockerfile: Dockerfile
environment:
- eureka.client.service-url.defaultZone=http://service-registration:8761/eureka
depends_on:
- service-registration
ports:
- "9001:9001"
income:
container_name: income
build:
context: ./income
dockerfile: Dockerfile
environment:
- eureka.client.service-url.defaultZone=http://service-registration:8761/eureka
depends_on:
- service-registration
ports:
- "9002:9002"

Answer 2

You should use your host ip address to run in your local machine. For the docker it should not be localhost
Try with the below configuration in your application.properties file.
eureka.client.service-url.defaultZone=http://host.docker.internal:8761/eureka/