인프런 커뮤니티 질문&답변

안녕하세요 선생님, 좋은 강의 잘 듣고 있습니다.

오늘은 카프카 커넥션 서버 기동시 발생하는 오류가 있어 질문드립니다.

우선, 발생하는 오류에 대한 로그 정보는 아래와 같습니다.

  log4j:ERROR Could not read configuration file from URL [file:C:/kafka_demo/confluent-6.1.0/config/tools-log4j.properties].
java.io.FileNotFoundException: C:\kafka_demo\confluent-6.1.0\config\tools-log4j.properties (지정된 경로를 찾을 수 없습니다)
  at java.base/java.io.FileInputStream.open0(Native Method)
  at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
  at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
  at java.base/java.io.FileInputStream.<init>(FileInputStream.java:112)
  at java.base/sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:86)
  at java.base/sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:184)
  at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:557)
  at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
  at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
  at org.slf4j.impl.Log4jLoggerFactory.<init>(Log4jLoggerFactory.java:66)
  at org.slf4j.impl.StaticLoggerBinder.<init>(StaticLoggerBinder.java:72)
  at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:45)
  at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
  at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
  at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:417)
  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:362)
  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:388)
  at org.apache.kafka.connect.cli.ConnectDistributed.<clinit>(ConnectDistributed.java:57)
  log4j:ERROR Ignoring configuration file [file:C:/kafka_demo/confluent-6.1.0/config/tools-log4j.properties].
  log4j:WARN No appenders could be found for logger (org.apache.kafka.connect.runtime.WorkerInfo).
  log4j:WARN Please initialize the log4j system properly.
  log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
  4월 22, 2021 10:13:57 오후 org.glassfish.jersey.internal.inject.Providers checkProviderRuntime
WARNING: A provider org.apache.kafka.connect.runtime.rest.resources.LoggingResource registered in SERVER runtime does not implement any provider interfaces applicable in the SERVER runtime. Due to constraint configuration problems the provider org.apache.kafka.connect.runtime.rest.resources.LoggingResource will be ignored.
  4월 22, 2021 10:13:57 오후 org.glassfish.jersey.internal.inject.Providers checkProviderRuntime
WARNING: A provider org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource registered in SERVER runtime does not implement any provider interfaces applicable in the SERVER runtime. Due to constraint configuration problems the provider org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource will be ignored.
  4월 22, 2021 10:13:57 오후 org.glassfish.jersey.internal.inject.Providers checkProviderRuntime
WARNING: A provider org.apache.kafka.connect.runtime.rest.resources.ConnectorPluginsResource registered in SERVER runtime does not implement any provider interfaces applicable in the SERVER runtime. Due to constraint configuration problems the provider org.apache.kafka.connect.runtime.rest.resources.ConnectorPluginsResource will be ignored.
  4월 22, 2021 10:13:57 오후 org.glassfish.jersey.internal.inject.Providers checkProviderRuntime
WARNING: A provider org.apache.kafka.connect.runtime.rest.resources.RootResource registered in SERVER runtime does not implement any provider interfaces applicable in the SERVER runtime. Due to constraint configuration problems the provider org.apache.kafka.connect.runtime.rest.resources.RootResource will be ignored.
  4월 22, 2021 10:13:58 오후 org.glassfish.jersey.internal.Errors logErrors
WARNING: The following warnings have been detected: WARNING: The (sub)resource method listLoggers in org.apache.kafka.connect.runtime.rest.resources.LoggingResource contains empty path annotation.
WARNING: The (sub)resource method createConnector in org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource contains empty path annotation.

WARNING: The (sub)resource method listConnectors in org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource contains empty path annotation. WARNING: The (sub)resource method listConnectorPlugins in org.apache.kafka.connect.runtime.rest.resources.ConnectorPluginsResource contains empty path annotation.
WARNING: The (sub)resource method serverInfo in org.apache.kafka.connect.runtime.rest.resources.RootResource contains empty path annotation.

위 로그를 보고 confluent-6.1.0 폴더에 config\tools-log4j.properties 라는 파일이 없어 이 문제가 발생한다고 생각 했습니다. 그래서 카프카 서버를 설치한 곳에 있는 \config\tools-log4j.properties 파일을 복사해 생성해주었지만 또 다른 오류가 발생하고 해결이 되지 않았습니다.

하지만, 동작은 선생님께서 하신 실습처럼 정상적으로 동작합니다. 다만 로그가 발생하지 않고 있습니다.

검색을 해봤지만 해결하지 못해 도움 부탁드립니다.