在同一机器中运行多个Tomcat时，如果不修改server.xml的端口参数，会出现端口冲突使得Tomcat异常；Tomcat默认配置中，JAVA_OPTS不会设置太大，一般需要在catalina.sh中增加一行配置来加大该参数值。

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目录

1.Server.xml配置

2.Catalina.sh配置

总结

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1.Server.xml配置

        需要改动的端口为：Server标签、HTTP的Connector标签和AJP的Connector标签。

xml如下：

<?xml version="1.0" encoding="UTF-8"?>

<Server port="8001" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <Service name="Catalina">

    <Connector port="8088" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    
    <!-- Define an AJP 1.3 Connector on port 8009 -->
   
    <Connector protocol="AJP/1.3"
               address="::1"
               port="8009"
               redirectPort="8443" />
   
    <Engine name="Catalina" defaultHost="localhost">
      
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />

      </Host>
    </Engine>
  </Service>
</Server>

2.Catalina.sh配置

        在sh文件首行加上JAVA_OPTS="-Xms4096M -Xmx8192M"这一行。

如下：

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总结

本文介绍了Tomcat的一些使用注意事项，记录一下。