웹소켓부분은 처음 배워봐서 조금 헷갈리네요 ㅠㅠ app의 views에서 렌더링 된 echo_page.html은 클라이언트를 의미 그 클라이언트에서 ws객체를 이용해 여러가지 이벤트 핸들러 처리와 메세지를 웹소켓 서버(ws:// localhost:8000/ws/echo/)로 전송할 수 있음 웹소켓 서버로 전송된 메세지는 routing.py에 등록된 path에 맞게 매칭된 Consumer를 호출 호출된 Consumer는 receive 오버라이딩을 통해 클라이언트에서 보낸 메세지에 대해 후속 처리 이 프로세스로 흘러가는게 맞나요? 한 가지 더 궁금한 점은 이번 예제의 EchoConsumer에서 send로 보낸 메세지는 단순히 '메세지 전송 요청을 보냈던' 클라이언트에게 되돌아가는데 만약 서로 다른 여러 클라이언트에서 요청이 들어오면 각 클라이언트는 어떻게 구별하나요? http의 헤더처럼 요청 주체를 구별하는 방법이 웹소켓 통신에도 따로 있는건가요?
따라하며 배우는 노드, 리액트 시리즈 - 레딧 사이트 만들기(NextJS)(Pages Router)
import "reflect-metadata"; ^^^^^^ SyntaxError: Cannot use import statement outside a module 해당 에러 발생 후 , package.json 파일에 type 을 추가 후 실행 하였더니, 충돌 에러가 발생합니다 ㅠ 어떻게 해결 해야 하는지 조언좀 부탁드립니다. https://github.com/bottlesun/study/tree/master/09-redditClone-nextjs
StockListing 함수를 직접 제작해서 조회하는 부분 질문입니다. 22년 1월 KRX 데이터와 23년 1월 현재 KRX 데이터가 많이 다른거 같습니다. 그래서 StockListing 함수를 동일하게 제작하면 전혀 다른 결과가 나옵니다. KRX 데이터가 변동이 생길때마다 StockListing 함수를 수정해야 하는 상황인데 해결 방법 문의드립니다.
올려주신 chatapp 프론트 엔드의 migrations yaml 파일을 hasura cli migrations v3 에 맞게 수정해주실 수 있나요? git에 올려주신 migrations 파일 내용이 현재 hasura 버전과는 호환이 안되어서 테이블 생성이 안됩니다. 우선 저는, hasura 이미지 버전 "hasura/graphql-engine:v1.3.4-beta.3.cli-migrations" 으로 바꾸는 방법으로 해결을 하긴했는데요, 바람직한 방법은 아니라고 생각해요. 올려주신 chatapp 프론트 엔드의 migrations yaml 파일을 hasura cli migrations v3 에 맞게 수정해주실 수 있나요? 시간을 들여서 수강자가 고치면 되긴하나 강의의 의도와는 멀어지기도 하고, 바꿔서 하는 것 조차 강의의 의도라고 하신다면, 최소한의 답안 정도는 있어야 한다고 생각해요.
안녕하세요 강사님 1강을 공부하다가 이해가 되지 않는 부분이 생겨서 질문드립니다. 컨테이너와 가상화 VM의 차이에 대한 내용을 공부하면서 컨테이너는 게스트 OS를 가지지 않고 VM은 게스트 OS를 가지기 때문이 무겁고 속도가 느릴 수 있다는 내용을 봤는데 1강 마지막 부분에 도커 컨테이너는 리눅스 VM에서 실행되고 컨테이너들은 리눅스 커널을 공유한다고 되어있습니다. 제가 가상화 컨테이너에 대한 강의 내용을 들으면서 생각했던 컨테이너들의 커널 공유는 호스트 OS인 MAC/윈도우의 커널을 공유하는 것이라고 생각을 했었는데 이 부분을 도커는 리눅스를 게스트 OS로 가지는 하나의 VM에서 실행되는 것이고 그 도커가 컨테이너를 가진다고 봐도 맞는 것일까요? 궁금한 부분을 해결하고 진도를 나가고 싶어서 자세한 설명을 너무 듣고 싶습니다...
- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. list(map(int, input().split(" "))) input.split(" ")은 추가적인 공백문자를 포함해서 구분해주는걸로아는데 input.split() 안쓰고 input.split(" ")을 쓰는 특별한 이유가 있는지 궁금합니다 다른데도 보면 같은코드에 input.split(), input.split(" ") 두개가 혼용되어 쓰이기도 하던데 큰 의미를 두고 구분해서 사용되지는 않죠? 그냥 input.split() 나 input.split(" ") 중 아무거나 사용되고있는 거죠?
윈도우11 home을 사용하고있고 C:\html 경로에서 docker run 명렁어를 입력하였습니다. 혹시 틀린 부분이 있을까요? 위 방법으로 해결은 되었습니다. 다만 무슨차이가 있는것이고 왜 문제가 발생한지 모르겠어요 그리고 또하나 질문이 있습니다. docker run으로 실행하였을때 위에 이미지 처럼 뜨게되는데 이 상태에서 컨트롤 + c / 컨트롤 + d를 입력해도 명령이 종료가 되지않는데 어떻게 종료할 수 있을까요?
안녕하세요, 로컬에서 테스트 마치고 도커로 프로비저닝 작업하고 있는 중에 이슈가 생겨 문의드립니다. // Docker image build docker build --tag msa-api-gateway:1.0 . // Docker container run docker run -d -p 8000:8000 --network msa-network \ -e "spring.cloud.config.uri=http://config-server:8888" \ -e "spring.rabbitmq.host=rabbitmq" \ -e "eureka.client.serviceUrl.defaultZone=http://service-discovery:8761/" \ --name api-gateway \ msa-api-gateway:1.0 위 커맨드로 api-gateway 도커 이미지 빌드 후 실행시 로그를 보니 connection failed 이슈가 발생해서 원인을 확인했는데요, -e 옵션으로 준 eureka.client.serviceUrl.defaultZone= http://service-discovery:8761/ 이 반영이 안되고 기존 application.yml에 정의되어 있는 localhost:8761/eureka가 호출되어 문제가 되는 것으로 확인됩니다. (application.yml 내에서 직접 defaultZone 수정하니깐 정상 동작됩니다. 또 확인차 application.yml에선 service-discovery로 하고 -e 옵션으로 localhost로 설정하여 의도적으로 에러를 발생시키려고 했는데, 역시나 반영이 안되고 정상적으로 동작되었습니다.) 참고로 application.yml은 별도 github에 정의되어 있고 config server로 가져오고 있는데요, 우선순위같은게 있을까요? 도움 부탁드립니다. (추가) 기존에 application.yml에 spring.rabbitmq.host:127 .0.0.1 로 되어있는 것에 -e 옵션으로 rabbitmq로 실행할 때도 반영이 안되네욥ㅠ application.yml에서 직접 rabbitmq로 수정해줘야 동작합니다. Config github 내에서 관리하는 api-gateway-server.yml 입니다. server: port: 8000 eureka: client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://service-discovery:8761/eureka # http://localhost:8761/eureka spring: application: name: api-gateway-server rabbitmq: # Spring Cloud Bus 적용을 위한 RabbitMQ host: rabbitmq #127.0.0.1 port: 5672 # rabbitmq admin port는 15672 username: guest password: guest cloud: gateway: default-filters: - name: GlobalFilter args: baseMessage: Spring Cloud Gateway Global Filter preLogger: true postLogger: true routes: - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/login # 로그인 - Method=POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/users # 회원가입 - Method=POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/actuator/** - Method=GET, POST filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - id: user-service uri: lb://USER-SERVICE predicates: - Path=/user-service/** - Method=GET filters: - RemoveRequestHeader=Cookie - RewritePath=/user-service/(?<segment>.*), /$\{segment} - AuthorizationHeaderFilter - id: order-service uri: lb://ORDER-SERVICE predicates: - Path=/order-service/** - Method=GET,POST filters: - RemoveRequestHeader=Cookie - RewritePath=/order-service/(?<segment>.*), /$\{segment} - id: catalog-service uri: lb://CATALOG-SERVICE predicates: - Path=/catalog-service/** - Method=GET,POST filters: - RemoveRequestHeader=Cookie - RewritePath=/catalog-service/(?<segment>.*), /$\{segment} management: # springboot actuator(운영중인 어플리케이션 모니터링 기능) 옵션 설정 endpoints: web: exposure: include: refresh, health, beans, httptrace, info, busrefresh token: # User-service Spring Security 인증토큰 expiration_time: 86400000 secret: userTokenForMSASkeletonTemplateHS256LongerThan256Bytes 혹시 몰라 도커 에러 메세지 남깁니다. . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.7.5) 2022-12-28 20:50:19.284 INFO 1 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://config-server:8888 2022-12-28 20:50:19.697 INFO 1 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=api-gateway-server, profiles=[default], label=null, version=32b9a3dfd58bb8bb5ef5e7a412b2433fc2d94791, state=null 2022-12-28 20:50:19.699 INFO 1 --- [ main] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-configClient'}, BootstrapPropertySource {name='bootstrapProperties-https://github.daumkakao.com/ch-svc-dev2/template-cloud-config/api-gateway-server/api-gateway-server.yml'}] 2022-12-28 20:50:19.708 INFO 1 --- [ main] c.a.ApiGatewayApplication : No active profile set, falling back to 1 default profile: "default" 2022-12-28 20:50:20.482 INFO 1 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created. 2022-12-28 20:50:20.492 INFO 1 --- [ main] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created. 2022-12-28 20:50:20.571 INFO 1 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=5f2180db-75bc-34c4-8dcd-bd49c1d7cf8d 2022-12-28 20:50:20.633 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.637 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationChannelResolver' of type [org.springframework.integration.support.channel.BeanFactoryChannelResolver] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.646 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.647 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig' of type [org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactorDeferringLoadBalancerFilterConfig] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:20.648 INFO 1 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'reactorDeferringLoadBalancerExchangeFilterFunction' of type [org.springframework.cloud.client.loadbalancer.reactive.DeferringLoadBalancerExchangeFilterFunction] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying) 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [After] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Before] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Between] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Cookie] 2022-12-28 20:50:21.347 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Header] 2022-12-28 20:50:21.348 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Host] 2022-12-28 20:50:21.351 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Method] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Path] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Query] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [ReadBody] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [RemoteAddr] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [XForwardedRemoteAddr] 2022-12-28 20:50:21.352 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [Weight] 2022-12-28 20:50:21.358 INFO 1 --- [ main] o.s.c.g.r.RouteDefinitionRouteLocator : Loaded RoutePredicateFactory [CloudFoundryRouteService] 2022-12-28 20:50:21.824 INFO 1 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 6 endpoint(s) beneath base path '/actuator' 2022-12-28 20:50:22.059 INFO 1 --- [ main] o.s.c.s.m.DirectWithAttributesChannel : Channel 'application-1.springCloudBusInput' has 1 subscriber(s). 2022-12-28 20:50:22.142 INFO 1 --- [ main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses RestTemplate. 2022-12-28 20:50:22.221 WARN 1 --- [ main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. While this cache implementation is useful for development and tests, it's recommended to use Caffeine cache in production.You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath. 2022-12-28 20:50:22.274 INFO 1 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel 2022-12-28 20:50:22.275 INFO 1 --- [ main] o.s.i.channel.PublishSubscribeChannel : Channel 'application-1.errorChannel' has 1 subscriber(s). 2022-12-28 20:50:22.275 INFO 1 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean '_org.springframework.integration.errorLogger' 2022-12-28 20:50:22.284 INFO 1 --- [ main] o.s.c.n.eureka.InstanceInfoFactory : Setting initial instance status as: STARTING 2022-12-28 20:50:22.353 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initializing Eureka in region us-east-1 2022-12-28 20:50:22.358 INFO 1 --- [ main] c.n.d.s.r.aws.ConfigClusterResolver : Resolving eureka endpoints via configuration 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Disable delta property : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Single vip registry refresh property : null 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Force full registry fetch : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application is null : false 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Application version is -1: true 2022-12-28 20:50:22.388 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server 2022-12-28 20:50:22.542 INFO 1 --- [ main] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplicationsInternal(RestTemplateEurekaHttpClient.java:145) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplications(RestTemplateEurekaHttpClient.java:135) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:441) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:283) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:279) at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:66) at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:295) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:374) at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:376) at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:179) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getTargetObject(EurekaRegistration.java:127) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getEurekaClient(EurekaRegistration.java:115) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:485) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration$$EnhancerBySpringCGLIB$$e271b02f.getEurekaClient(<generated>) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:54) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:38) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:83) at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) at com.apigatewayserver.ApiGatewayApplication.main(ApiGatewayApplication.java:20) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 76 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 89 more 2022-12-28 20:50:22.543 WARN 1 --- [ main] 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; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:22.543 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to refresh its cache! This periodic background refresh will be retried in 30 seconds. status = Cannot execute request on any known server stacktrace = com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:441) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:283) at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:279) at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:66) at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:295) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:374) at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:376) at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:179) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getTargetObject(EurekaRegistration.java:127) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getEurekaClient(EurekaRegistration.java:115) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:485) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration$$EnhancerBySpringCGLIB$$e271b02f.getEurekaClient(<generated>) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:54) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:38) at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:83) at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) at java.base/java.lang.Iterable.forEach(Iterable.java:75) at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) at com.apigatewayserver.ApiGatewayApplication.main(ApiGatewayApplication.java:20) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) 2022-12-28 20:50:22.543 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from primary servers failed 2022-12-28 20:50:22.544 WARN 1 --- [ main] com.netflix.discovery.DiscoveryClient : Using default backup registry implementation which does not do anything. 2022-12-28 20:50:22.544 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from backup servers failed 2022-12-28 20:50:22.548 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Starting heartbeat executor: renew interval is: 30 2022-12-28 20:50:22.555 INFO 1 --- [ main] c.n.discovery.InstanceInfoReplicator : InstanceInfoReplicator onDemand update allowed rate per min is 4 2022-12-28 20:50:22.564 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Discovery Client initialized at timestamp 1672260622563 with initial instances count: 0 2022-12-28 20:50:22.566 INFO 1 --- [ main] o.s.c.n.e.s.EurekaServiceRegistry : Registering application API-GATEWAY-SERVER with eureka with status UP 2022-12-28 20:50:22.568 INFO 1 --- [ main] com.netflix.discovery.DiscoveryClient : Saw local status change event StatusChangeEvent [timestamp=1672260622568, current=UP, previous=STARTING] 2022-12-28 20:50:22.569 INFO 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000: registering service... 2022-12-28 20:50:22.613 INFO 1 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.register(RestTemplateEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 22 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 35 more 2022-12-28 20:50:22.613 WARN 1 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:22.616 WARN 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - registration failed Cannot execute request on any known server com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:22.617 WARN 1 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator : There was a problem with the instance info replicator com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator$1.run(InstanceInfoReplicator.java:101) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:22.772 INFO 1 --- [ main] c.s.b.r.p.RabbitExchangeQueueProvisioner : declaring queue for inbound: springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A, bound to: springCloudBus 2022-12-28 20:50:22.775 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.781 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.783 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.801 INFO 1 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A.errors' has 1 subscriber(s). 2022-12-28 20:50:22.803 INFO 1 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A.errors' has 2 subscriber(s). 2022-12-28 20:50:22.804 INFO 1 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.804 INFO 1 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused 2022-12-28 20:50:22.814 INFO 1 --- [g64rsAotJWA4A-1] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:22.815 INFO 1 --- [ main] o.s.i.a.i.AmqpInboundChannelAdapter : started bean 'inbound.springCloudBus.anonymous.cBaG6SL1Qg64rsAotJWA4A' 2022-12-28 20:50:22.931 INFO 1 --- [ main] o.s.b.web.embedded.netty.NettyWebServer : Netty started on port 8000 2022-12-28 20:50:22.934 INFO 1 --- [ main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8000 2022-12-28 20:50:22.969 INFO 1 --- [ main] c.a.ApiGatewayApplication : Started ApiGatewayApplication in 4.45 seconds (JVM running for 4.862) 2022-12-28 20:50:27.878 WARN 1 --- [g64rsAotJWA4A-1] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:27.886 INFO 1 --- [g64rsAotJWA4A-1] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@748d2277: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:27.893 INFO 1 --- [g64rsAotJWA4A-2] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:32.942 WARN 1 --- [g64rsAotJWA4A-2] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:32.945 INFO 1 --- [g64rsAotJWA4A-2] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@419e8443: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:32.948 INFO 1 --- [g64rsAotJWA4A-3] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:38.008 WARN 1 --- [g64rsAotJWA4A-3] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:38.008 INFO 1 --- [g64rsAotJWA4A-3] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@69ca4bfc: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:38.009 INFO 1 --- [g64rsAotJWA4A-4] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:43.062 WARN 1 --- [g64rsAotJWA4A-4] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:43.064 INFO 1 --- [g64rsAotJWA4A-4] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@3e206044: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:43.068 INFO 1 --- [g64rsAotJWA4A-5] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:48.142 WARN 1 --- [g64rsAotJWA4A-5] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:48.142 INFO 1 --- [g64rsAotJWA4A-5] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@46628e2f: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:48.143 INFO 1 --- [g64rsAotJWA4A-6] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Disable delta property : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Single vip registry refresh property : null 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Force full registry fetch : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Application is null : false 2022-12-28 20:50:52.551 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true 2022-12-28 20:50:52.552 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Application version is -1: true 2022-12-28 20:50:52.552 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server 2022-12-28 20:50:52.582 INFO 1 --- [tbeatExecutor-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on PUT request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on PUT request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.sendHeartBeat(RestTemplateEurekaHttpClient.java:99) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:893) at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1457) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 20 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 33 more 2022-12-28 20:50:52.582 INFO 1 --- [freshExecutor-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:8761/eureka/apps/": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplicationsInternal(RestTemplateEurekaHttpClient.java:145) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.getApplications(RestTemplateEurekaHttpClient.java:135) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1531) at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1498) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 23 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 36 more 2022-12-28 20:50:52.582 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/API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.582 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; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.582 INFO 1 --- [freshExecutor-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to refresh its cache! This periodic background refresh will be retried in 30 seconds. status = Cannot execute request on any known server stacktrace = com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101) at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014) at com.netflix.discovery.DiscoveryClient.refreshRegistry(DiscoveryClient.java:1531) at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1498) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) 2022-12-28 20:50:52.582 ERROR 1 --- [tbeatExecutor-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - was unable to send heartbeat! com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:893) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1457) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:52.624 INFO 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000: registering service... 2022-12-28 20:50:52.636 INFO 1 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused stacktrace=org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785) at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:711) at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:602) at org.springframework.cloud.netflix.eureka.http.RestTemplateEurekaHttpClient.register(RestTemplateEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121) at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:831) Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:87) at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48) at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66) at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776) ... 21 more Caused by: java.net.ConnectException: Connection refused at java.base/sun.nio.ch.Net.connect0(Native Method) at java.base/sun.nio.ch.Net.connect(Net.java:576) at java.base/sun.nio.ch.Net.connect(Net.java:565) at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588) at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:332) at java.base/java.net.Socket.connect(Socket.java:631) at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75) at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ... 34 more 2022-12-28 20:50:52.637 WARN 1 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: I/O error on POST request for "http://localhost:8761/eureka/apps/API-GATEWAY-SERVER": Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused; nested exception is org.apache.http.conn.HttpHostConnectException: Connect to localhost:8761 [localhost/127.0.0.1] failed: Connection refused 2022-12-28 20:50:52.637 WARN 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_API-GATEWAY-SERVER/30a30ddf419f:api-gateway-server:8000 - registration failed Cannot execute request on any known server com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:52.638 WARN 1 --- [nfoReplicator-0] c.n.discovery.InstanceInfoReplicator : There was a problem with the instance info replicator com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$1.execute(EurekaHttpClientDecorator.java:59) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.register(EurekaHttpClientDecorator.java:56) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.DiscoveryClient.register(DiscoveryClient.java:876) ~[eureka-client-1.10.17.jar!/:1.10.17] at com.netflix.discovery.InstanceInfoReplicator.run(InstanceInfoReplicator.java:121) ~[eureka-client-1.10.17.jar!/:1.10.17] at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na] at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na] at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[na:na] at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na] 2022-12-28 20:50:53.205 WARN 1 --- [g64rsAotJWA4A-6] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:53.206 INFO 1 --- [g64rsAotJWA4A-6] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@55a62eea: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:53.209 INFO 1 --- [g64rsAotJWA4A-7] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:50:58.260 WARN 1 --- [g64rsAotJWA4A-7] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:50:58.262 INFO 1 --- [g64rsAotJWA4A-7] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@1f16b696: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:50:58.267 INFO 1 --- [g64rsAotJWA4A-8] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672] 2022-12-28 20:51:03.361 WARN 1 --- [g64rsAotJWA4A-8] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it. Exception summary: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused 2022-12-28 20:51:03.362 INFO 1 --- [g64rsAotJWA4A-8] o.s.a.r.l.SimpleMessageListenerContainer : Restarting Consumer@2193ccd1: tags=[[]], channel=null, acknowledgeMode=AUTO local queue size=0 2022-12-28 20:51:03.362 INFO 1 --- [g64rsAotJWA4A-9] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [127.0.0.1:5672]
[리뉴얼] 파이썬입문과 크롤링기초 부트캠프 [파이썬, 웹, 데이터 이해 기본까지] (업데이트)
- 본 강의 영상 학습 관련 문의에 대해 답변을 드립니다. (어떤 챕터 몇분 몇초를 꼭 기재부탁드립니다) - 이외의 문의등은 평생강의이므로 양해를 부탁드립니다 - 현업과 병행하는 관계로 주말/휴가 제외 최대한 3일내로 답변을 드리려 노력하고 있습니다 - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요. 12분 25초에 함수를 만들때 return이 3번 들어가도 되는건가요? 마지막에 함수 끝날때만 들어가야하고 조건문에서는 else로 조건문을 닫는다던가 해야하는거 아닌지 궁금합니다.
강사님 안녕하세요 강의 항상 잘 보고 있습니다. 강의 중에 궁금한 부분이 있어서 질문드립니다. HPA 기능을 사용하기 위해서 Metric Server를 설치하는데 이전 수업에서 kube-scheduler 설명할때는 kube-scheduler가 api-server에 watch를 걸어놓고 모든 node의 cpu/mem등의 리소스 상황을 파악하여 파드생성등의 요청이 있을때 목적지를 선정해주는 역할이라고 들었습니다. 그럼 metric server를 설치를 안해도 api-server를 통해 cpu/mem 정보를 알수 있지 않나 싶은데 HPA를 사용하기 위해서 metric server를 설치하는 이유가 있을까요? HPA에서 metric api를 사용한다는 것은 알고 있는데 kube-scheduler처럼 metric server를 통하지 않아도 cpu/mem 정보를 얻을수 있지 않을까 싶어서 여쭤봅니다.
