#question 根据tomcat的官方例子，我经常配置测试和启动。遇到一个奇怪的问题，发现8009启动有问题，端口和防火墙都正常，不知道怎么处理。
server.xml https://tomcat.apache.org/tomcat-7.0-doc/cluster-howto.html（配置示例）
# tomcat log
<code>
INFO: Server version name: Apache Tomcat/7.0.103
INFO: Server version number: 7.0.103.0
INFO: OS Name: Linux
INFO: CATALINA_HOME: /home/tomcat/apache-tomcat-7.0.103
INFO: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
INFO: Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
INFO: Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
INFO: Command line argument: -Dignore.endorsed.dirs=
INFO: Command line argument: -Dcatalina.base=/home/tomcat/apache-tomcat-7.0.103
INFO: Command line argument: -Dcatalina.home=/home/tomcat/apache-tomcat-7.0.103
INFO: Command line argument: -Djava.io.tmpdir=/home/tomcat/apache-tomcat-7.0.103/temp
Apr 13, 2020 5:47:16 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The APR based Apache Tomcat Native library which allows optimal …