Disabling APR connectors in JBoss EWS Tomcat

Environment

• JBoss Enterprise Web Server (EWS)
  • Tomcat

Issue

• EWS Tomcat is automatically using the native/APR connectors, but we need to disable these. How can we do that?

Resolution

• Drop the AprLifecycleListener from your server.xml:

<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />

• And uninstall the native libraries.

  • If using an RPM installed EWS on RHEL, uninstall the tomcat-native package:

      yum uninstall tomcat-native
    

  • If using a zip installed EWS, remove the following files from your $EWS_HOME/tomcat6/lib directory:

    • libapr-1.so.0
    • libtcnative-1.so
• Now without detecting the native/APR libraries Tomcat won't use these connectors.

Root Cause

If you have a need for javax.imageio.stream or comet protocol, then you shouldn't use tcnative, but rather the Java connectors, or use the Comet processor that ships Tomcat/JBossWeb.

See JVM crash triggered by libtcnative for more details.

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