[Spring Cloud Netflix] Eureka Server, Client 설정

• Spring Boot 2.5.2
• IntelliJ 2020.3.3

1. Eureka Server

dependencies {
    implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-server'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

server:
  port: 8761
eureka:
  instance:
    appname: injuk-server
  client:
    fetch-registry: false
    register-with-eureka: true

@SpringBootApplication
@EnableEurekaServer
public class DemoApplication {

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

}

• 코드: https://github.com/injuk/eureka_server_handson

2. Eureka Client

dependencies {
    implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

server:
  port: 8080
eureka:
  instance:
    appname: injuk-client
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      defaultZone: http://localhost:8761/eureka/

@SpringBootApplication
@EnableEurekaClient
public class DemoApplication {

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

}

• 코드: https://github.com/injuk/eureka_client_handson

 

3. Eureka dashboard 접속

• http://localhost:8761
  • http://localhost:8761/eureka/apps도 확인해보자.

 

배운 것

• 포트 겹치면 당연히 안됨
• EnableEurekaClient와 EnableDiscoveryClient는 다름 (참고)
• dependencies에 eureka client용과 server용을 같이 넣지 말자.
  • 에러가 발생하며 실행되지 않는다. 실습해본다고 spring initializr에서 다 체크해서 문제가 발생하였음... 
    • error getting CloudEurekaClient
    • Error creating bean with name 'scopedTarget.eurekaClient' defined in class path resource, 등 
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