Tomcat 7 复制 - 不同的机器答案

【问题标题】：Tomcat 7 replication - different machinesTomcat 7 复制 - 不同的机器
【发布时间】：2013-10-30 10:07:55
【问题描述】：

我有 2 只雄猫：

1) 10.0.50.35

2) 10.0.110.31

10.0.50.35 server.xml：

<Engine name="Catalina" defaultHost="localhost">

 <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
             channelSendOptions="8">

      <Manager className="org.apache.catalina.ha.session.DeltaManager"
               expireSessionsOnShutdown="false"
               notifyListenersOnReplication="true"/>

      <Channel className="org.apache.catalina.tribes.group.GroupChannel">
        <Membership className="org.apache.catalina.tribes.membership.McastService"
                    address="228.0.0.4"
                    port="45564"
                    frequency="500"
                    dropTime="3000"/>
        <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                  address="auto"
                  port="4000"
                  autoBind="100"
                  selectorTimeout="5000"
                  maxThreads="6"/>

        <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
          <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
        </Sender>
        <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
        <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
      </Channel>

      <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
             filter=""/>
      <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

      <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
                tempDir="/tmp/war-temp/"
                deployDir="/tmp/war-deploy/"
                watchDir="/tmp/war-listen/"
                watchEnabled="false"/>

      <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
      <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
    </Cluster>

这里是 10.0.110.31 server.xml

<Engine name="Catalina" defaultHost="localhost">

 <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
             channelSendOptions="8">

      <Manager className="org.apache.catalina.ha.session.DeltaManager"
               expireSessionsOnShutdown="false"
               notifyListenersOnReplication="true"/>

      <Channel className="org.apache.catalina.tribes.group.GroupChannel">
        <Membership className="org.apache.catalina.tribes.membership.McastService"
                    address="228.0.0.4"
            bind="10.0.50.35"
                    port="45564"
                    frequency="500"
                    dropTime="3000"/>
        <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                  address="auto"
                  port="4000"
                  autoBind="100"
                  selectorTimeout="5000"
                  maxThreads="6"/>

        <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
          <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
        </Sender>
        <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
        <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
      </Channel>

      <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
             filter=""/>
      <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

      <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"
                tempDir="/tmp/war-temp/"
                deployDir="/tmp/war-deploy/"
                watchDir="/tmp/war-listen/"
                watchEnabled="false"/>

      <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
      <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>
    </Cluster>

10.0.110.31启动了，但是10.0.50.35没有启动，报错如下：

SEVERE: Unable to start cluster.
org.apache.catalina.tribes.ChannelException: java.net.SocketException: Cannot assign requested address; No faulty members identified.
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:178)
at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:99)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)
at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:157)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:162)
at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:419)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.startInternal(SimpleTcpCluster.java:685)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1106)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:691)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:456)
Caused by: java.net.SocketException: Cannot assign requested address

【问题讨论】：

我对 Tomcat 集群一无所知，但是您的 10.0.50.35 服务器应该有一个 bind="10.0.110.31" 条目吗？

标签： session tomcat session-replication

【解决方案1】：

从

中删除“自动”

<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                  address="auto"
                  port="4000"
                  autoBind="100"
                  selectorTimeout="5000"
                  maxThreads="6"/>

并输入你的局域网地址。

【讨论】：

【解决方案2】：

一些建议：

首先，确保多播为properly enabled on your system。

其次，确保您的 JVM 首先尝试绑定到 IPv4 地址（而不是 IPv6 地址）。通过将以下内容添加到 tomcat 的 bin 目录中 catalina.sh 中的 JAVA_OPTS 来做到这一点：

JAVA_OPTS="-Djava.net.preferIPv4Stack=true"

【讨论】：