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From Ben <newread...@gmail.com>
Subject Re: Clustering Tomcat
Date Sun, 22 May 2005 16:28:49 GMT
It was my firewall. The servers are working now, however I get these
error messages when I stop and start one of the two Tomcat instances:

May 21, 2005 5:09:20 PM org.apache.catalina.cluster.tcp.SimpleTcpCluster send
SEVERE: Unable to send message through cluster sender.
java.io.IOException: Sender not available. Make sure sender
information is available to the ReplicationTransmitter.
        at org.apache.catalina.cluster.tcp.ReplicationTransmitter.sendMessageData(ReplicationTransmitter.java:641)
        at org.apache.catalina.cluster.tcp.ReplicationTransmitter.sendMessage(ReplicationTransmitter.java:331)
        at org.apache.catalina.cluster.tcp.SimpleTcpCluster.send(SimpleTcpCluster.java:463)
        at org.apache.catalina.cluster.session.DeltaManager.messageReceived(DeltaManager.java:860)
        at org.apache.catalina.cluster.session.DeltaManager.messageDataReceived(DeltaManager.java:724)
        at org.apache.catalina.cluster.tcp.SimpleTcpCluster.messageDataReceived(SimpleTcpCluster.java:658)
        at org.apache.catalina.cluster.io.ObjectReader.execute(ObjectReader.java:103)
        at org.apache.catalina.cluster.tcp.TcpReplicationThread.drainChannel(TcpReplicationThread.java:129)
        at org.apache.catalina.cluster.tcp.TcpReplicationThread.run(TcpReplicationThread.java:67)
May 21, 2005 5:09:24 PM org.apache.catalina.cluster.tcp.DataSender <init>

Thanks
Ben



On 5/22/05, Dale, Matt <Matt.Dale@becogent.com> wrote:
> 
> It looks like your machine is unable to send a multicast message. It will be an operating
system configuration.
> 
> Ta
> Matt
> 
> -----Original Message-----
> From: Ben [mailto:newreaders@gmail.com]
> Sent: 21 May 2005 02:11
> To: Tomcat
> Subject: Clustering Tomcat
> 
> 
> Hi
> 
> I'm trying to configure clustering of 2 Tomcat servers on a single
> CentOS 4 machine. When I start the first Tomcat, I get error  messages
> like this in the catalina.out log file:
> 
> org.apache.catalina.cluster.mcast.McastServiceImpl$SenderThread run
> WARNING: Unable to send mcast message.
> java.net.SocketException: Operation not permitted
>         at jrockit.net.SocketNativeIO.send(Ljava.io.FileDescriptor;[BIILjava.net.InetAddress;II)I(Unknown
> Source)
>         at java.net.PlainDatagramSocketImpl.send(Ljava.net.DatagramPacket;[BI)V(Unknown
> Source)
>         at java.net.PlainDatagramSocketImpl.send(Ljava.net.DatagramPacket;)V(Unknown
> Source)
>         at java.net.DatagramSocket.send(DatagramSocket.java:612)
>         at org.apache.catalina.cluster.mcast.McastServiceImpl.send(McastServiceImpl.java:228)
>         at org.apache.catalina.cluster.mcast.McastServiceImpl$SenderThread.run(McastServiceImpl.java:264)
> 
> 
> I am using JRockit 5.0_02 and Tomcat 5.5.9.
> 
> Where can I find more information about this error?
> 
> Thanks,
> Ben
> 
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