[Tomcat] The AJP Connector is configured with secretRequired="true" but the secret attribute is either null or "". This combination is not valid.

오늘 톰캣을 구성하다가 다음과 같은 오류가 발생했습니다.

 

한번 끄적여두면 좋을 것 같아 적어둡니다.

 

이유: 톰캣 8.5부터는 Connector에 secretRequired를 추가해주어야 함 (보안 이슈인 듯)

해결법: server.xml에 AJP부분에 secretRequired="false" 추가

 

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector protocol="AJP/1.3"
               address="::1"
               port="8009"
               secretRequired="false"
               redirectPort="8443" />

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22-Oct-2020 05:20:11.005 SEVERE [main] org.apache.catalina.core.StandardService.startInternal Failed to start connector [Connector[AJP/1.3-8009]]

org.apache.catalina.LifecycleException: Protocol handler start failed

at org.apache.catalina.connector.Connector.startInternal(Connector.java:1102)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardService.startInternal(StandardService.java:440)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:766)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

at org.apache.catalina.startup.Catalina.start(Catalina.java:688)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:342)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)

Caused by: java.lang.IllegalArgumentException: The AJP Connector is configured with secretRequired="true" but the secret attribute is either null or "". This combination is not valid.

at org.apache.coyote.ajp.AbstractAjpProtocol.start(AbstractAjpProtocol.java:274)

at org.apache.catalina.connector.Connector.startInternal(Connector.java:1100)

... 12 more

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