Spring cloud Eureka client not registering - spring-cloud

Question

I have recently updated my micro-services project from Spring boot 2.0.5 to 2.7.4.
Also, updated Spring cloud dependencies to 2021.0.4.
Miragrate from Netflix Zuul to Spring cloud Gateway.
My Eureka Server is running on PORT 8000, which I can access on browser and see the Eureka Dashboard.
Gateway is running on port 8001, which registers successfully with Eureka, and I can see it's status "UP" in the Dashboard.
But no other service are registered on Eureka. The application.yml file of all other services are almost similar to the gateway-service. Below are some code snippets of one of the services :
Problem 1 - Application name UNKNOWN
DiscoveryClient_UNKNOWN/192.168.1.3: registering service...
Problem 2
Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=java.net.ConnectException: Connection refused (Connection refused) stacktrace=com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused (Connection refused)
Eureka-server config
spring:
application:
name: eureka-service
cloud:
config:
uri: ${eureka.instance.hostname}:${server.port}
server:
port: 8000
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
service-url:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka
server:
enableSelfPreservation: false
logging:
level:
org.springframework: ERROR
com.debugfactory.trypz: ERROR
file:
name: logs/eureka-service.log
Gateway-service Application.yml - This registers with proper name with Eureka
spring:
main:
web-application-type: reactive
allow-bean-definition-overriding: true
application:
name: zuul-service
servlet:
multipart:
max-file-size: 10MB
max-request-size: 10MB
cloud:
gateway:
discovery:
locator:
enabled: true
routes:
- id: sms-service
uri: http://sms-service/
predicates:
- Path=/sms/**
server:
port: 8001
max-thread: 100
eureka:
client:
serviceUrl:
defaultZone: ${EUREKA_URI:http://localhost:8000/eureka/}
instance:
preferIpAddress: true
logging:
file:
name: logs/zuul-service.log
pattern:
file: "%d %-5level [%thread] %logger{0} : %msg%n"
level:
org.springframework: INFO
com.bayview: DEBUG
org.netflix: INFO
SMS-Service <- This tries to look for Eureka port on 8761 with name UNKNOWN
Application.yml
spring:
application:
name: sms-service
data:
mongodb:
authentication-database: admin
database: sms
host: localhost
port: 27017
main:
allow-bean-definition-overriding: true
config:
activate:
on-profile: local
server:
port: 8022
servlet:
context-path: /sms
tomcat:
max-threads: 10
logging:
level:
org.springframework.web: ERROR
org.hibernate: ERROR
com.cryptified.exchange: DEBUG
org.springframework.data: ERROR
org.springframework.security: ERROR
org.springframework.web.client: DEBUG
file:
name: logs/sms-service.log
eureka:
client:
serviceUrl:
defaultZone: ${EUREKA_URI:http://localhost:8000/eureka/}
instance:
preferIpAddress: true

Answer 1

gradle
plugins {
id 'org.springframework.boot' version '2.7.5'
id 'io.spring.dependency-management' version '1.0.15.RELEASE'
id 'java'
}
repositories {
mavenCentral()
}
ext {
set('springCloudVersion', "2021.0.4")
set('testcontainersVersion', "1.17.4")
mapStructVersion = '1.5.3.Final'
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
implementation 'org.flywaydb:flyway-core'
implementation 'org.springframework.cloud:spring-cloud-starter-config'
implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
implementation 'org.springframework.boot:spring-boot-starter-aop'
implementation 'org.springframework.boot:spring-boot-starter-actuator'
implementation 'org.springframework.boot:spring-boot-starter-validation'
implementation "org.mapstruct:mapstruct:${mapStructVersion}"
annotationProcessor "org.mapstruct:mapstruct-processor:${mapStructVersion}"
compileOnly 'org.projectlombok:lombok'
runtimeOnly 'org.postgresql:postgresql'
annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
annotationProcessor 'org.projectlombok:lombok'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
testImplementation 'org.testcontainers:junit-jupiter'
}
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
}
}
.....
application.yml in your project
URI_TO_SERVER_CONFIG: http://localhost:8888
spring:
application:
name: name_project_your
cloud:
config:
uri: ${URI_TO_SERVER_CONFIG}
config:
import: configserver:${URI_TO_SERVER_CONFIG}
profiles:
active: microservice, discoveries, name_project_your
Application configs on git-repository
application-discoveries.yml
SERVER_PORT_SERVICE_DISCOVERY: 8761
IP_ADDRESS_SERVICE_DISCOVERY: http://localhost
eureka:
instance:
instance-id: ${spring.application.name}:${random.uuid}
# https://docs.spring.io/spring-cloud-netflix/docs/current/reference/html/#changing-the-eureka-instance-id
client:
service-url:
defaultZone: ${IP_ADDRESS_SERVICE_DISCOVERY}:${SERVER_PORT_SERVICE_DISCOVERY}/eureka
lease-renewal-interval-in-seconds: 5
name-project-your.yml
DB_IP: 127.0.0.1
DB_PORT: 5432
DB_DATABASE_NAME: name_db
DB_URL: jdbc:postgresql://${DB_IP}:${DB_PORT}/${DB_DATABASE_NAME}
DB_USERNAME: postgres
DB_PASSWORD: postgres
DB_SCHEMA: your_schema
spring:
application:
name: name-project-your
cloud:
config:
enabled: true
discovery:
enabled: true
datasource:
url: ${DB_URL}
username: ${DB_USERNAME}
password: ${DB_PASSWORD}
flyway:
baseline-on-migrate: true
locations: classpath:db/migration
create-schemas: true
default-schema: ${DB_SCHEMA}
application-microservice.yml
eureka:
client:
fetch-registry: true
register-with-eureka: true
logging:
level:
com:
netflix:
eureka: debug
discovery: debug
server:
port: 0