zuul을 사용하기 위해서는 spring boot 버전이 2.4보다 낮아야 한다고 해서 2.3.9.RELEASE를 사용했습니다. (2.4 미만 버전은 RELEASE가 붙더라고요)또한, spring boot 버전이 2.4 미만일 경우 spring cloud 2020.0.0 (2.4.x, 2.5.x 에서만 사용 가능) 버전을 사용할 수 없고 Hoxton 버전을 사용해야 됨을 적용했습니다.아래와 같이 해서 실행 성공했습니다.plugins { id 'java' id 'org.springframework.boot' version '2.3.9.RELEASE' id 'io.spring.dependency-management' version '1.0.11.RELEASE' } group = 'com.example' version = '0.0.1-SNAPSHOT' sourceCompatibility = '11' configurations { compileOnly { extendsFrom annotationProcessor } } repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client' compileOnly 'org.projectlombok:lombok' annotationProcessor 'org.projectlombok:lombok' testImplementation 'org.springframework.boot:spring-boot-starter-test' } dependencyManagement { imports { mavenBom "org.springframework.cloud:spring-cloud-dependencies:Hoxton.RELEASE" } } tasks.named('test') { useJUnitPlatform() }

안녕하세요.강의 PPT 자료를 찾아봤는데 없어서 문의드립니다. 현재 다운받을수 없는건가요?

http://localhost:8888/ecommerce/default 에서는 {name: "ecommerce",profiles: ["default"],label: null,version: "f45bf692a6cb54252ea12041f0aa92a71964a5f7",state: null,propertySources: [{name: "file:///C:\\Users\\ydj90\\Downloads\\git/file:C:\Users\ydj90\Downloads\git\ecommerce.yml",source: {token.expiration_time: 864000000,gateway.ip: "172.30.1.33",token.secret: "userToken_token"}}]}http://localhost:8888/user-service/default 에서는{name: "user-service",profiles: ["default"],label: null,version: "f45bf692a6cb54252ea12041f0aa92a71964a5f7",state: null,propertySources: [{name: "file:///C:\\Users\\ydj90\\Downloads\\git/file:C:\Users\ydj90\Downloads\git\user-service.yml",source: {spring.datasource.url: "jdbc:h2:mem:testdb",spring.datasource.driver-class-name: "org.h2.Driver",spring.datasource.generate-unique-name: false,token.expiration_time: 864000000,gateway.ip: "172.30.1.33",order_service.url: "http://ORDER-SERVICE/order-service/%s/orders",spring.datasource.username: "sa",token.secret: "userToken_token"}}]} 이와 같이 token.secret이 같은데 왜 subject가 null값이 되는지 이유를 알 수 가 없습니다. login하고 나온 header값을 가지고 bearer에 넣어 인증하는 방식이 아닙니까?이유를 잘 모르겠습니다. JWT token is not valid이게 왜 뜨는지subject = Jwts.parser().setSigningKey(env.getProperty("token.secret")) .parseClaimsJws(jwt).getBody() .getSubject(); 여기서 왜 null값으로 값을 반환하는지 이해를 할 수가 없습니다.

안녕하세요 강의를 보던 도중 질문이 생겼습니다. 보통 JPA 서비스 설계시 모놀로틱한 서비스에서 서로 다른 엔티티를 연관관계를 통해 데이터베이스 JOIN 을 이용하여 서비스 하는것으로 알고 있습니다. 그러나 MSA 환경에서는 데이터베이스 자체가 분리되어 있는 상태여서 해당 방식은 불가능 하다는 것을 이전 여러 질문들을 통해 알게 되었습니다.이러한 점을 해결할 방식을 찾는 도중 DDD를 이용하여 관점을 분리하고 연관된 엔티티들을 묶어 Aggregator 개념으로 묶어서 사용한다는 글들을 알게 되었습니다. 여기서 질문인 점은 Aggregator로 연관된 엔티티를 묶는 다는 의미가하나의 마이크로 서비스에 여러 엔티티를 두어 기존 사용하던 JPA 연관관계처럼 사용한다는 것인지아니면 분리된 두 서비스는 각자 두고 상위 서비스를 다시 선언하여 해당 서비스에서 연관된 두 엔티티를 조회하여 묶어서 사용하는 것인지 궁금합니다. 아니면 제가 아예 Aggregator 라는 개념을 잘못 이해한 것일까요?

강사님 안녕하세요? 강의 너무 잘 듣고 있습니다. Feign Client 강의에서 ErrorDecoder를 추가하여 try-catch문을 사용하지 않고, HTTP 에러 코드 별 처리 방법을 별도로 분리했었는데요.이번 강의에서처럼 Circuit breaker를 사용하면 API 호출 시 발생하는 모든 오류 상황에 대해 fallback 값이 전달되기 때문에 ErrorDecoder는 별도로 필요하지 않을 것 같습니다. 외부 API 호출하는 모든 케이스에서 circuit breaker를 사용한다면 ErrorDecoder는 불필요한 것이 맞나요?circuit breaker와 error decoder가 둘 다 필요하다고 한다면, error decoder은 어떤 역할을 할 수 있나요?  항상 감사드립니다.

application.yml 파일에서 글로벌 필터의 속성 ( baseMessage, preLogger, postLogger) 는 인식하는데 로깅 필터의 속성은 인식하지 못해 cannot resolve property 에러가 납니다. 왜인지 이유를 알 수 없어 질문드립니다.LoggingFilter.java 파일입니다.package com.todaypills.apigatewayservice.Filter; import lombok.Data; import lombok.extern.slf4j.Slf4j; import org.springframework.cloud.gateway.filter.GatewayFilter; import org.springframework.cloud.gateway.filter.OrderedGatewayFilter; import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory; import org.springframework.core.Ordered; import org.springframework.http.server.reactive.ServerHttpRequest; import org.springframework.http.server.reactive.ServerHttpResponse; import org.springframework.stereotype.Component; import reactor.core.publisher.Mono; @Slf4j //for print log @Component /**커스텀 필터의 일종임, 단지 로그를 찍기 위한 필터이므로 이름을 Logging 이라고 지은 것*/ public class LoggingFilter extends AbstractGatewayFilterFactory<LoggingFilter.Config> { public LoggingFilter() { super(Config.class); } @Override public GatewayFilter apply(Config config) { /** * 위쪽 주석부분은 람다 표현식으로 바로 리턴한 것이고 이것은 람다를 사용하지 않고 리턴한 것임, * 따라서 인스턴스부터 만들어주어야 하고 GatewayFilter는 인터페이스이기 때문에 직접 인스턴스를 생성할 수는 없고, OrderedGatewayFilter() 를 이용하여 인스턴스를 만들어주어야함 * */ GatewayFilter filter = new OrderedGatewayFilter(((exchange, chain) -> { /** exchange: request와 response 객체를 얻기 위함 */ ServerHttpRequest request = exchange.getRequest(); ServerHttpResponse response = exchange.getResponse(); log.info("logging filter: request id -> {}", config.getBaseMessage()); if(config.isPreLogger()){ log.info("logging pre filter start: request id -> {}", request.getId()); } return chain.filter(exchange).then(Mono.fromRunnable(() -> { if(config.isPostLogger()){ //Mono 객체: 웹플럭스(스프링5)에서 지원하는 기능으로 비동기방식의 서버에서 단일값을 전달할 때 모노타입으로 전달 log.info("logging post filter end: response code -> {}", response.getStatusCode()); } })); }), Ordered.HIGHEST_PRECEDENCE); //HIGHEST_PRECEDENCE 는 적용할 필터가 여러개일 때 어느것이 먼저 실행될지 우선순위를 부여함 return filter; } @Data // setter getter 함수 생성 (isPreLogger(), isPostLogger() 등) public static class Config{ // 여기에 configuration 이 있다면 삽입 private String baseMessage; private boolean preLogger; private boolean postLogger; } }  application.yml 파일입니다.server: port: 8000 eureka: client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://localhost:8761/eureka spring: application: name: apigateway-service cloud: gateway: default-filters: - name: GlobalFilter args: # 우리가 정의한 변수 baseMessage: 게이트웨이 글로벌 필터입니다. preLogger: true #prefilter의 유무 postLogger: true routes: #FilterConfig의 라우팅 정보를 yml 파일로도 설정할 수 있음 - id: nutrients-service uri: http://localhost:8081/ predicates: - Path=/nutrients-service/** filters: # - AddRequestHeader=nutrients-request, nutrients-request-heaer-value # - AddResponseHeader=nutrients-response, nutrients-response-header-value - name: CustomFilter - name: LoggingFilter args: baseMessage: 커스텀 로깅 필터입니다. preLogger: true postLogger: true

안녕하세요.Kafka Connect 를 활용한 단일 데이터베이스를 사용 파트를 듣고 있는데요.Multiple Order Service가 같은 DB URL을 가지고, JPA를 통해서 데이터 저장을 하면 될 것 같은데, 굳이 Kafka Sink Connector를 통해서 데이터 저장을 하는 이유가 따로 있을까요?JPA를 쓰면 Persistence Manager가 제공하는 여러 장점을 이용할 수 있을 것 같은데, Kafka sink connector는 그런 장점을 이용할 수 없을 것 같아서요.. 실제 현업에서 많이 사용되는 테크닉인지 궁금하고, 만약 사용한다면 장점은 무엇인지 궁금합니다!

안녕하세요!Custim Filter 강의 중 아래 코드 부분에서 GatewayFilter의 생성자가 exchange와 chain이기 때문에 return (exchange, chain) -> { .. 이 되는 것 까지는 이해를 하였습니다.그런데 이 때 exchange와 chain 변수가 어디에서 정의되어서 여기서 사용되는 건지 잘 모르겠습니다 ㅠㅠ return (exchange, chain) -> {// GatewayFilter의 생성자 Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain);

UserService API 를 호출할때 RestTemplate 를 통해 OrderService 의 API 를 추가로 호출하는 방법을 보고 각 마이크로 서비스들이 엔티티 단위로 모듈화 되어 설계되어있다면 이런식으로 하는구나~ 배울 수 있었습니다. 그런데 이렇게 두개 이상의 마이크로서비스가 호출되는 API 는 테스트 코드를 어떻게 작성해야 하는지 감이 잡히지 않습니다. Web Layer(Controller) 를 테스트할때는 Service 객체를 Mocking 해서 해결할 수 있을것 같은데, Service layer(Service 클래스) 를 테스트할때는 어떻게 해야할까요?

안녕하세요!뒤늦게 강의를 수강하고 있습니다.현재 mariadb docker build 후에 docker run을 하게 되면 아래와 같은 에러가 발생합니다.구글링을 해도 방법을 찾을 수가 없어요 ㅜㅜ[Dockerfile][Docker logs mariadb]어떻게 해결해야 할까요?...

SOA 와 MSA 를 명확하게 구분지을 수 있는 요소가 각각의 서비스에 대한 오토스케일링 (수평확장) 가능 여부 라고 이해해도 될까요? 클라우드 환경에서 수평 확장을 위한 가장 효율적인 시스템유형이 Cloud Native Application 이다 라고 설명 해주셨는데요, 클라우드 환경에서 수직 확장은 효율적이지 못한건가요? (잘 쓰이질 않는건가요?)강의 내용중에 수평 확장을 해놓고 그 상태에서 수직 확장을 하는 방식으로 적용을 한다. 라는 설명을 해주셨는데, 이 맥락과 연관이 있는지 궁금합니다!아직 실습을 해보지 않은 상황에서 단순하게 생각해보면, 수직확장은 반영에 시간이 걸린다 라고 설명해주셨는데 그렇다면 수직확장 부터 미리 반영시켜 놓고 서비스 운영 중에 자동으로 수평 확장이 될 수 있도록 오토스케일링 설정을 해놓아야 하는게 아닌가 라는 생각이 듭니다.

안녕하세요!먼저 강의 너무너무 잘 보고 있습니다!공부를 하다가 갑자기 궁금한게 생겼는데,여러 개발자와 협업해야하는 환경이 될 때같은 서비스를 개발 할 시 개발 환경이 어찌 되는지 알고 싶습니다.Q1. 같은 서비스 개발 할 때에 디스커버리 서버와 APIGateway를 각자 개발자가 켜놓고 연관 된 서비스들도 다 실행 한 뒤에 개발을 하는지..Q2. 아니라면 APIGateway를 공용으로 사용시 따로 환경세팅이 있을까요?APIGateway를 공유하고 같은 서비스를 켜놓고 개발을 진행시 프론트에서 서비스 API등 호출 할 때에 제가 아닌 다른분의 서비스에 들어가면 어쩌지? 하는의문에서 시작되었습니다.너무너무 궁금합니다..강의는 너무 잘 보고 있고 다음강의도 기대하겠습니다!감사합니다.

- 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. Postman 으로 데이터값 { "name": "my-source-connect", "config": { "connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector", "connection.url": "jdbc:mariadb://localhost:3306/mydb", "connection.user": "root", "connection.password": "1234", "mode": "incrementing", "incrementing.column.name": "id", "table.whitelist": "users", "topic.prefix": "my_topic_", "tasks.max": "1" } } 을 Post 방식으로 보냈고 (h2 console 창에서 연결 확인했습니다 ) 다시 Get 방식으로 보냈을때 my-source-connect 확인했습니다.  그 후 connect 콘솔 창에 뜬 로그 입니다. [2022-08-08 23:05:06,233] INFO JdbcSourceConnectorConfig values: batch.max.rows = 100 catalog.pattern = null connection.attempts = 3 connection.backoff.ms = 10000 connection.password = [hidden] connection.url = jdbc:mariadb://localhost:3306/mydb connection.user = root db.timezone = UTC dialect.name = incrementing.column.name = id mode = incrementing numeric.mapping = null numeric.precision.mapping = false poll.interval.ms = 5000 query = query.retry.attempts = -1 query.suffix = quote.sql.identifiers = ALWAYS schema.pattern = null table.blacklist = [] table.monitoring.startup.polling.limit.ms = 10000 table.poll.interval.ms = 60000 table.types = [TABLE] table.whitelist = [users] timestamp.column.name = [] timestamp.delay.interval.ms = 0 timestamp.granularity = connect_logical timestamp.initial = null topic.prefix = my_topic_ transaction.isolation.mode = DEFAULT validate.non.null = true (io.confluent.connect.jdbc.source.JdbcSourceConnectorConfig:361) [2022-08-08 23:05:06,241] INFO AbstractConfig values: (org.apache.kafka.common.config.AbstractConfig:361) [2022-08-08 23:05:06,270] INFO [Worker clientId=connect-1, groupId=connect-cluster] Connector my-source-connect config updated (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1534) [2022-08-08 23:05:06,275] INFO [Worker clientId=connect-1, groupId=connect-cluster] Rebalance started (org.apache.kafka.connect.runtime.distributed.WorkerCoordinator:225) [2022-08-08 23:05:06,275] INFO [Worker clientId=connect-1, groupId=connect-cluster] (Re-)joining group (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:540) [2022-08-08 23:05:06,280] INFO [Worker clientId=connect-1, groupId=connect-cluster] Successfully joined group with generation Generation{generationId=48, memberId='connect-1-74e3b810-49fe-4cd5-90cf-0c9408ba73ab', protocol='sessioned'} (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:596) [2022-08-08 23:05:06,297] INFO [Worker clientId=connect-1, groupId=connect-cluster] Successfully synced group in generation Generation{generationId=48, memberId='connect-1-74e3b810-49fe-4cd5-90cf-0c9408ba73ab', protocol='sessioned'} (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:756) [2022-08-08 23:05:06,298] INFO [Worker clientId=connect-1, groupId=connect-cluster] Joined group at generation 48 with protocol version 2 and got assignment: Assignment{error=0, leader='connect-1-74e3b810-49fe-4cd5-90cf-0c9408ba73ab', leaderUrl='http://127.0.0.1:8083/', offset=44, connectorIds=[my-source-connect], taskIds=[], revokedConnectorIds=[], revokedTaskIds=[], delay=0} with rebalance delay: 0 (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1689) [2022-08-08 23:05:06,303] INFO [Worker clientId=connect-1, groupId=connect-cluster] Starting connectors and tasks using config offset 44 (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1216) [2022-08-08 23:05:06,308] INFO [Worker clientId=connect-1, groupId=connect-cluster] Starting connector my-source-connect (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1299) [2022-08-08 23:05:06,313] INFO Creating connector my-source-connect of type io.confluent.connect.jdbc.JdbcSourceConnector (org.apache.kafka.connect.runtime.Worker:274) [2022-08-08 23:05:06,316] INFO SourceConnectorConfig values: config.action.reload = restart connector.class = io.confluent.connect.jdbc.JdbcSourceConnector errors.log.enable = false errors.log.include.messages = false errors.retry.delay.max.ms = 60000 errors.retry.timeout = 0 errors.tolerance = none header.converter = null key.converter = null name = my-source-connect predicates = [] tasks.max = 1 topic.creation.groups = [] transforms = [] value.converter = null (org.apache.kafka.connect.runtime.SourceConnectorConfig:361) [2022-08-08 23:05:06,317] INFO EnrichedConnectorConfig values: config.action.reload = restart connector.class = io.confluent.connect.jdbc.JdbcSourceConnector errors.log.enable = false errors.log.include.messages = false errors.retry.delay.max.ms = 60000 errors.retry.timeout = 0 errors.tolerance = none header.converter = null key.converter = null name = my-source-connect predicates = [] tasks.max = 1 topic.creation.groups = [] transforms = [] value.converter = null (org.apache.kafka.connect.runtime.ConnectorConfig$EnrichedConnectorConfig:361) [2022-08-08 23:05:06,339] INFO Instantiated connector my-source-connect with version 10.5.1 of type class io.confluent.connect.jdbc.JdbcSourceConnector (org.apache.kafka.connect.runtime.Worker:284) [2022-08-08 23:05:06,339] INFO Finished creating connector my-source-connect (org.apache.kafka.connect.runtime.Worker:310) [2022-08-08 23:05:06,341] INFO Starting JDBC Source Connector (io.confluent.connect.jdbc.JdbcSourceConnector:71) [2022-08-08 23:05:06,344] INFO [Worker clientId=connect-1, groupId=connect-cluster] Finished starting connectors and tasks (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1244) [2022-08-08 23:05:06,358] INFO JdbcSourceConnectorConfig values: batch.max.rows = 100 catalog.pattern = null connection.attempts = 3 connection.backoff.ms = 10000 connection.password = [hidden] connection.url = jdbc:mariadb://localhost:3306/mydb connection.user = root db.timezone = UTC dialect.name = incrementing.column.name = id mode = incrementing numeric.mapping = null numeric.precision.mapping = false poll.interval.ms = 5000 query = query.retry.attempts = -1 query.suffix = quote.sql.identifiers = ALWAYS schema.pattern = null table.blacklist = [] table.monitoring.startup.polling.limit.ms = 10000 table.poll.interval.ms = 60000 table.types = [TABLE] table.whitelist = [users] timestamp.column.name = [] timestamp.delay.interval.ms = 0 timestamp.granularity = connect_logical timestamp.initial = null topic.prefix = my_topic_ transaction.isolation.mode = DEFAULT validate.non.null = true (io.confluent.connect.jdbc.source.JdbcSourceConnectorConfig:361) [2022-08-08 23:05:06,369] INFO Attempting to open connection #1 to MySql (io.confluent.connect.jdbc.util.CachedConnectionProvider:79) [2022-08-08 23:05:06,446] INFO Starting thread to monitor tables. (io.confluent.connect.jdbc.source.TableMonitorThread:82) [2022-08-08 23:05:06,494] INFO SourceConnectorConfig values: config.action.reload = restart connector.class = io.confluent.connect.jdbc.JdbcSourceConnector errors.log.enable = false errors.log.include.messages = false errors.retry.delay.max.ms = 60000 errors.retry.timeout = 0 errors.tolerance = none header.converter = null key.converter = null name = my-source-connect predicates = [] tasks.max = 1 topic.creation.groups = [] transforms = [] value.converter = null (org.apache.kafka.connect.runtime.SourceConnectorConfig:361) [2022-08-08 23:05:06,498] INFO EnrichedConnectorConfig values: config.action.reload = restart connector.class = io.confluent.connect.jdbc.JdbcSourceConnector errors.log.enable = false errors.log.include.messages = false errors.retry.delay.max.ms = 60000 errors.retry.timeout = 0 errors.tolerance = none header.converter = null key.converter = null name = my-source-connect predicates = [] tasks.max = 1 topic.creation.groups = [] transforms = [] value.converter = null (org.apache.kafka.connect.runtime.ConnectorConfig$EnrichedConnectorConfig:361) [2022-08-08 23:05:06,530] ERROR Encountered an unrecoverable error while reading tables from the database (io.confluent.connect.jdbc.source.TableMonitorThread:224) org.apache.kafka.connect.errors.ConnectException: The connector uses the unqualified table name as the topic name and has detected duplicate unqualified table names. This could lead to mixed data types in the topic and downstream processing errors. To prevent such processing errors, the JDBC Source connector fails to start when it detects duplicate table name configurations. Update the connector's 'table.whitelist' config to include exactly one table in each of the tables listed below. [["mydb"."users", "performance_schema"."users"]] at io.confluent.connect.jdbc.source.TableMonitorThread.tables(TableMonitorThread.java:152) at io.confluent.connect.jdbc.JdbcSourceConnector.taskConfigs(JdbcSourceConnector.java:164) at org.apache.kafka.connect.runtime.Worker.connectorTaskConfigs(Worker.java:359) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnector(DistributedHerder.java:1428) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnectorTasksWithRetry(DistributedHerder.java:1366) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1000(DistributedHerder.java:128) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1318) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1312) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.tick(DistributedHerder.java:371) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:295) at java.base/java.util.concurrent.Executors$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:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) [2022-08-08 23:05:06,538] ERROR WorkerConnector{id=my-source-connect} Connector raised an error (org.apache.kafka.connect.runtime.WorkerConnector:506) org.apache.kafka.connect.errors.ConnectException: Encountered an unrecoverable error while reading tables from the database at io.confluent.connect.jdbc.source.TableMonitorThread.fail(TableMonitorThread.java:226) at io.confluent.connect.jdbc.source.TableMonitorThread.tables(TableMonitorThread.java:153) at io.confluent.connect.jdbc.JdbcSourceConnector.taskConfigs(JdbcSourceConnector.java:164) at org.apache.kafka.connect.runtime.Worker.connectorTaskConfigs(Worker.java:359) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnector(DistributedHerder.java:1428) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnectorTasksWithRetry(DistributedHerder.java:1366) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1000(DistributedHerder.java:128) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1318) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1312) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.tick(DistributedHerder.java:371) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:295) at java.base/java.util.concurrent.Executors$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:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.apache.kafka.connect.errors.ConnectException: The connector uses the unqualified table name as the topic name and has detected duplicate unqualified table names. This could lead to mixed data types in the topic and downstream processing errors. To prevent such processing errors, the JDBC Source connector fails to start when it detects duplicate table name configurations. Update the connector's 'table.whitelist' config to include exactly one table in each of the tables listed below. [["mydb"."users", "performance_schema"."users"]] at io.confluent.connect.jdbc.source.TableMonitorThread.tables(TableMonitorThread.java:152) ... 14 more [2022-08-08 23:05:06,542] ERROR [Worker clientId=connect-1, groupId=connect-cluster] Failed to reconfigure connector's tasks, retrying after backoff: (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1377) org.apache.kafka.connect.errors.ConnectException: Encountered an unrecoverable error while reading tables from the database at io.confluent.connect.jdbc.source.TableMonitorThread.fail(TableMonitorThread.java:226) at io.confluent.connect.jdbc.source.TableMonitorThread.tables(TableMonitorThread.java:153) at io.confluent.connect.jdbc.JdbcSourceConnector.taskConfigs(JdbcSourceConnector.java:164) at org.apache.kafka.connect.runtime.Worker.connectorTaskConfigs(Worker.java:359) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnector(DistributedHerder.java:1428) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.reconfigureConnectorTasksWithRetry(DistributedHerder.java:1366) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.access$1000(DistributedHerder.java:128) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1318) at org.apache.kafka.connect.runtime.distributed.DistributedHerder$12.call(DistributedHerder.java:1312) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.tick(DistributedHerder.java:371) at org.apache.kafka.connect.runtime.distributed.DistributedHerder.run(DistributedHerder.java:295) at java.base/java.util.concurrent.Executors$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:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: org.apache.kafka.connect.errors.ConnectException: The connector uses the unqualified table name as the topic name and has detected duplicate unqualified table names. This could lead to mixed data types in the topic and downstream processing errors. To prevent such processing errors, the JDBC Source connector fails to start when it detects duplicate table name configurations. Update the connector's 'table.whitelist' config to include exactly one table in each of the tables listed below. [["mydb"."users", "performance_schema"."users"]] at io.confluent.connect.jdbc.source.TableMonitorThread.tables(TableMonitorThread.java:152) ... 14 more [2022-08-08 23:05:06,546] INFO [Worker clientId=connect-1, groupId=connect-cluster] Skipping reconfiguration of connector my-source-connect since it is not running (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1415) [2022-08-08 23:05:06,795] INFO [Worker clientId=connect-1, groupId=connect-cluster] Skipping reconfiguration of connector my-source-connect since it is not running (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1415)  계속 구글링하고 찾아봤는데  뭐가 잘못되었는지 잘모르겠습니다 ㅠ 

version: '2'services: zookeeper: image: confluentinc/cp-zookeeper:7.2.1 hostname: zookeeper container_name: zookeeper ports: - "2181:2181" environment: ZOOKEEPER_CLIENT_PORT: 2181 ZOOKEEPER_TICK_TIME: 2000 broker: image: confluentinc/cp-server:7.2.1 hostname: broker container_name: broker depends_on: - zookeeper ports: - "9092:9092" - "9101:9101" environment: KAFKA_BROKER_ID: 1 KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181' KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:29092,PLAINTEXT_HOST://localhost:9092 KAFKA_METRIC_REPORTERS: io.confluent.metrics.reporter.ConfluentMetricsReporter KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0 KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR: 1 KAFKA_CONFLUENT_BALANCER_TOPIC_REPLICATION_FACTOR: 1 KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1 KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1 KAFKA_JMX_PORT: 9101 KAFKA_JMX_HOSTNAME: localhost KAFKA_CONFLUENT_SCHEMA_REGISTRY_URL: http://schema-registry:8081 CONFLUENT_METRICS_REPORTER_BOOTSTRAP_SERVERS: broker:29092 CONFLUENT_METRICS_REPORTER_TOPIC_REPLICAS: 1 CONFLUENT_METRICS_ENABLE: 'true' CONFLUENT_SUPPORT_CUSTOMER_ID: 'anonymous' schema-registry: image: confluentinc/cp-schema-registry:7.2.1 hostname: schema-registry container_name: schema-registry depends_on: - broker ports: - "8081:8081" environment: SCHEMA_REGISTRY_HOST_NAME: schema-registry SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: 'broker:29092' SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081 connect: image: cnfldemos/cp-server-connect-datagen:0.5.3-7.1.0 hostname: connect container_name: connect depends_on: - broker - schema-registry ports: - "8083:8083"    volumes:     - ./jdbc jar가 들어있는 로컬 디렉토리:/etc/kafka-connect/jars #jdbc 연결시 필요   environment: CONNECT_BOOTSTRAP_SERVERS: 'broker:29092' CONNECT_REST_ADVERTISED_HOST_NAME: connect CONNECT_GROUP_ID: compose-connect-group CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 1 CONNECT_OFFSET_FLUSH_INTERVAL_MS: 10000 CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1 CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1 CONNECT_KEY_CONVERTER: org.apache.kafka.connect.storage.StringConverter CONNECT_VALUE_CONVERTER: org.apache.kafka.connect.json.JsonConverter CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: http://schema-registry:8081 # CLASSPATH required due to CC-2422 CLASSPATH: /usr/share/java/monitoring-interceptors/monitoring-interceptors-7.2.1.jar CONNECT_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor" CONNECT_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor" CONNECT_PLUGIN_PATH: "/usr/share/java,/usr/share/confluent-hub-components" CONNECT_LOG4J_LOGGERS: org.apache.zookeeper=ERROR,org.I0Itec.zkclient=ERROR,org.reflections=ERROR control-center: image: confluentinc/cp-enterprise-control-center:7.2.1 hostname: control-center container_name: control-center depends_on: - broker - schema-registry - connect - ksqldb-server ports: - "9021:9021" environment: CONTROL_CENTER_BOOTSTRAP_SERVERS: 'broker:29092' CONTROL_CENTER_CONNECT_CONNECT-DEFAULT_CLUSTER: 'connect:8083' CONTROL_CENTER_KSQL_KSQLDB1_URL: "http://ksqldb-server:8088" CONTROL_CENTER_KSQL_KSQLDB1_ADVERTISED_URL: "http://localhost:8088" CONTROL_CENTER_SCHEMA_REGISTRY_URL: "http://schema-registry:8081" CONTROL_CENTER_REPLICATION_FACTOR: 1 CONTROL_CENTER_INTERNAL_TOPICS_PARTITIONS: 1 CONTROL_CENTER_MONITORING_INTERCEPTOR_TOPIC_PARTITIONS: 1 CONFLUENT_METRICS_TOPIC_REPLICATION: 1 PORT: 9021 ksqldb-server: image: confluentinc/cp-ksqldb-server:7.2.1 hostname: ksqldb-server container_name: ksqldb-server depends_on: - broker - connect ports: - "8088:8088" environment: KSQL_CONFIG_DIR: "/etc/ksql" KSQL_BOOTSTRAP_SERVERS: "broker:29092" KSQL_HOST_NAME: ksqldb-server KSQL_LISTENERS: "http://0.0.0.0:8088" KSQL_CACHE_MAX_BYTES_BUFFERING: 0 KSQL_KSQL_SCHEMA_REGISTRY_URL: "http://schema-registry:8081" KSQL_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor" KSQL_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor" KSQL_KSQL_CONNECT_URL: "http://connect:8083" KSQL_KSQL_LOGGING_PROCESSING_TOPIC_REPLICATION_FACTOR: 1 KSQL_KSQL_LOGGING_PROCESSING_TOPIC_AUTO_CREATE: 'true' KSQL_KSQL_LOGGING_PROCESSING_STREAM_AUTO_CREATE: 'true' ksqldb-cli: image: confluentinc/cp-ksqldb-cli:7.2.1 container_name: ksqldb-cli depends_on: - broker - connect - ksqldb-server entrypoint: /bin/sh tty: true ksql-datagen: image: confluentinc/ksqldb-examples:7.2.1 hostname: ksql-datagen container_name: ksql-datagen depends_on: - ksqldb-server - broker - schema-registry - connect command: "bash -c 'echo Waiting for Kafka to be ready... && \ cub kafka-ready -b broker:29092 1 40 && \ echo Waiting for Confluent Schema Registry to be ready... && \ cub sr-ready schema-registry 8081 40 && \ echo Waiting a few seconds for topic creation to finish... && \ sleep 11 && \ tail -f /dev/null'" environment: KSQL_CONFIG_DIR: "/etc/ksql" STREAMS_BOOTSTRAP_SERVERS: broker:29092 STREAMS_SCHEMA_REGISTRY_HOST: schema-registry STREAMS_SCHEMA_REGISTRY_PORT: 8081 rest-proxy: image: confluentinc/cp-kafka-rest:7.2.1 depends_on: - broker - schema-registry ports: - 8082:8082 hostname: rest-proxy container_name: rest-proxy environment: KAFKA_REST_HOST_NAME: rest-proxy KAFKA_REST_BOOTSTRAP_SERVERS: 'broker:29092' KAFKA_REST_LISTENERS: "http://0.0.0.0:8082" KAFKA_REST_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081' docker-compose.yml 파일입니다!

강의에서 안내하는 bootstrap.yml을 똑같이 만들어주고 application.yml에서 아래 코드를 추가하면 됩니다. 아래서 경로 자체를 연결하는 방법도 댓글로 알려주셨는데 저는 저게 잘 안 되서 이렇게 해결했습니다. spring: config: import: - classpath:/bootstrap.yml

안녕하세요. 강의 수강중 intellij 버전이 달라서인지, jdk 버전이 달라서인지 몰라도 아래 run/debug config 화면에서 Enviroment 옵션이 보이지 않습니다. 유레카 실습 중이고 한개의 프로젝트에서 여러 서비스를 실행시킬 때 VM option을 사용해서 포트를 변경 하려 하는데 해당 옵션이 보이지 않아 문의 드립니다. Intellij 버전은IntelliJ IDEA 2022.2 (Ultimate Edition) /  Build #IU-222.3345.118, built on July 26, 2022 입니다. 구글링을 해도 못찾겠어서 질문 드려요~!   이것 저것 누르다 보니 찾았습니다. Modify options 에서 VM options 라는 항목이 따로 있네요...   혹시 run/debug configuration 창의 형태(?)를 강의 하시는 화면과 동일하게 변경하는 옵션이 따로 있을까요..?

modelmapper의 경우 자주 사용될 것 같은데bean으로 등록 해두고 사용하는게 좀 더 유리할까요?? userEntity -> userDto로 변환하여 리턴할때 기존에 파라미터로 받았던 dto값을 그대로 넘겨줘도 될 것 같은데요! 굳이 변환해서 넘겨주는 의도가 어떤것인지 궁금합니다!

안녕하세요. 윈도우 환경에서 강의를 듣던 중에 막히는 부분이 있어서요.  PS C:\Users\hoirias\confluent-6.1.0> .\bin\windows\connect-distributed.bat .\etc\kafka\connect-distributed.properties Error: Could not find or load main class org.apache.kafka.connect.cli.ConnectDistributedCaused by: java.lang.ClassNotFoundException: org.apache.kafka.connect.cli.ConnectDistributed   아직 properties 파일 등을 수정하진 않은 상태인데요, 강의를 보면 수정 전에도 돌아는 가야 하는걸로 보여서요. 자바 버전은 현재 18.0.1.1을 사용하고 있으며, 컨플루언트 doc 참조하여 11.0.4까지 낮췄는데도 동일한 현상 입니다.   

api gate way 서버에서 refresh를 해도 모든 서버에 다 적용이 되는건가요 ? 가령 ecommerce.yml파일에서 토큰 정보를 바꿨는데 api gate way 서버 api로 refresh를 해도 유저 서비스에 token도 바뀌는 건가요? 강의에서는 그렇게 나오긴했는데 맞는지 확시히 잘 몰라서 질문드립니다  

안녕하세요. POSTMAN에서 POST방식으로 호출하는 경우, ConfigService쪽에 아래와 같은 오류가 발생합니다. 잘못 입력한 부분이 있는지 확인 부탁 드립니다.   1. user-service yml spring: application: name: user-service cloud: config: name: ecommerce config: import: optional:configserver:http://127.0.0.1:88882. config-service yml server: port: 8888spring: application: name: config-service cloud: config: server: git: uri: file://D:\\Projects\\intelliJ\\git-local-repo   3. 오류로그 org.springframework.cloud.config.server.environment.NoSuchLabelException: No such label: main    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.refresh(JGitEnvironmentRepository.java:314) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.getLocations(JGitEnvironmentRepository.java:262) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.MultipleJGitEnvironmentRepository.getLocations(MultipleJGitEnvironmentRepository.java:139) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.AbstractScmEnvironmentRepository.findOne(AbstractScmEnvironmentRepository.java:55) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.MultipleJGitEnvironmentRepository.findOneFromCandidate(MultipleJGitEnvironmentRepository.java:188) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.MultipleJGitEnvironmentRepository.findOne(MultipleJGitEnvironmentRepository.java:173) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.CompositeEnvironmentRepository.findOne(CompositeEnvironmentRepository.java:64) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.EnvironmentEncryptorEnvironmentRepository.findOne(EnvironmentEncryptorEnvironmentRepository.java:61) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.EnvironmentController.getEnvironment(EnvironmentController.java:134) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.EnvironmentController.defaultLabelIncludeOrigin(EnvironmentController.java:116) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]    at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]    at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282) ~[spring-core-5.3.21.jar:5.3.21]    at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:485) ~[spring-cloud-context-3.1.3.jar:3.1.3]    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.21.jar:5.3.21]    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.21.jar:5.3.21]    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.21.jar:5.3.21]    at org.springframework.cloud.config.server.environment.EnvironmentController$$EnhancerBySpringCGLIB$$dc31df60.defaultLabelIncludeOrigin(<generated>) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]    at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.21.jar:5.3.21]    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.21.jar:5.3.21]    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.21.jar:5.3.21]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.64.jar:4.0.FR]    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.21.jar:5.3.21]    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.64.jar:4.0.FR]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.21.jar:5.3.21]    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.21.jar:5.3.21]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.21.jar:5.3.21]    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.21.jar:5.3.21]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.21.jar:5.3.21]    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.21.jar:5.3.21]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1787) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.64.jar:9.0.64]    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]Caused by: org.eclipse.jgit.api.errors.RefNotFoundException: Ref main cannot be resolved    at org.eclipse.jgit.api.CheckoutCommand.call(CheckoutCommand.java:223) ~[org.eclipse.jgit-5.12.0.202106070339-r.jar:5.12.0.202106070339-r]    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.checkout(JGitEnvironmentRepository.java:468) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    at org.springframework.cloud.config.server.environment.JGitEnvironmentRepository.refresh(JGitEnvironmentRepository.java:307) ~[spring-cloud-config-server-3.1.3.jar:3.1.3]    ... 65 common frames omitted