Unregistering application EUREKA_CLIENT with eureka with status DOWN. eureka 클 라 이언 트 가 시 작 된 후 등록 에 실 패 했 고 프로젝트 가 중단 되 었 습 니 다.

eureka 클 라 이언 트 가 시작 클래스 에 @ EnableDiscoveryClient 를 추 가 했 습 니 다.
프로필

eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/
    register-with-eureka: false
spring:
  application:
    name: eureka
server:
  port: 8761

오류 없 음 을 확인 하고 시동 을 걸 면,

2020-09-05 10:30:31.885  INFO 13492 --- [           main] c.s.e.EurekaClientApplication            : Started EurekaClientApplication in 4.954 seconds (JVM running for 5.863)
2020-09-05 10:30:31.889  INFO 13492 --- [extShutdownHook] o.s.c.n.e.s.EurekaServiceRegistry        : Unregistering application EUREKA_CLIENT with eureka with status DOWN
2020-09-05 10:30:31.890  WARN 13492 --- [extShutdownHook] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1599273031890, current=DOWN, previous=UP]
2020-09-05 10:30:31.894  INFO 13492 --- [extShutdownHook] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
2020-09-05 10:30:31.987  INFO 13492 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 - registration status: 204
2020-09-05 10:30:31.988  INFO 13492 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081: registering service...
2020-09-05 10:30:31.997  INFO 13492 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 - registration status: 204
2020-09-05 10:30:32.002  INFO 13492 --- [extShutdownHook] com.netflix.discovery.DiscoveryClient    : Unregistering ...
2020-09-05 10:30:32.012  INFO 13492 --- [extShutdownHook] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 - deregister  status: 200
2020-09-05 10:30:32.027  INFO 13492 --- [extShutdownHook] com.netflix.discovery.DiscoveryClient    : Completed shut down of DiscoveryClient

eureka 서버 에서 클 라 이언 트 등록 을 표시 한 후 즉시 취소 합 니 다.

2020-09-05 10:38:33.844  INFO 9480 --- [nio-8761-exec-8] c.n.e.registry.AbstractInstanceRegistry  : Registered instance EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 with status UP (replication=false)
2020-09-05 10:38:33.850  INFO 9480 --- [nio-8761-exec-6] c.n.e.registry.AbstractInstanceRegistry  : Registered instance EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 with status DOWN (replication=false)
2020-09-05 10:38:33.856  INFO 9480 --- [nio-8761-exec-7] c.n.e.registry.AbstractInstanceRegistry  : Cancelled instance EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 (replication=false)
2020-09-05 10:38:34.360  INFO 9480 --- [nio-8761-exec-3] c.n.e.registry.AbstractInstanceRegistry  : Registered instance EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 with status DOWN (replication=true)
2020-09-05 10:38:34.360  INFO 9480 --- [nio-8761-exec-3] c.n.e.registry.AbstractInstanceRegistry  : Cancelled instance EUREKA_CLIENT/DESKTOP-87SI8LC:eureka_client:8081 (replication=true)

해결 방법 은 클 라 이언 트 프로젝트 에 웹 모듈 을 도입 합 니 다.

        
            org.springframework.boot
            spring-boot-starter-web
        

프로젝트 를 다시 시작 하면 됩 니 다.