On 05/04/2012 22:01, Mark Eggers wrote:
> Response at the bottom:
>
> /mde/
>
>> ________________________________
>> From: Dhaval Jaiswal <dhaval.jais...@via.com>
>> To: Tomcat Users List <users@tomcat.apache.org>
>> Sent: Thursday, April 5, 2012 10:28 AM
>> Subject: Re: SEVERE: Unable to start cluster.
>>
>>
>> pfa server.xml
>>
>> The same i am using for all the 10 tomcats.
>>
>>
>>
>>
>> On Thu, Apr 5, 2012 at 9:55 PM, Pid <p...@pidster.com> wrote:
>>
>> On 05/04/2012 15:13, Dhaval Jaiswal wrote:
>>>> I have tested the below cluster manager; as per the instruction i have
>>>> changed. However, when we try to deploy the apps on tomcat it was
>>>> throwing error that
>>>>
>>>> WARNING: Unable to send map start message.
>>>> Apr 5, 2012 1:37:12 PM org.apache.catalina.ha.session.BackupManager start
>>>> SEVERE: Unable to start BackupManager
>>>> java.lang.RuntimeException: Unable to start replicated map.
>>>> at
>>>> org.apache.catalina.tribes.tipis.AbstractReplicatedMap.init(AbstractReplicatedMap.java:230)
>>>>
>>>> Failed to start BackupManager: java.lang.IllegalArgumentException:
>>>> Listener already
>>>> exists:{}[org.apache.catalina.tribes.tipis.LazyReplicatedMap]
>>>>
>>>>
>>>>
>>>> i am using below server.xml for all the 10 tomcats. Do i have to change
>>>> it for every tomcat. How would i fix it.
>>>>
>>>>
>>>>
>>>> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
>>>> channelSendOptions="6">
>>>> <Manager
>>>> className="org.apache.catalina.ha.session.BackupManager"
>>>> expireSessionsOnShutdown="false"
>>>> notifyListenersOnReplication="true" mapSendOptions="6"/>
>>>>
>>>> <Channel
>>>> className="org.apache.catalina.tribes.group.GroupChannel">
>>>> <Membership
>>>> className="org.apache.catalina.tribes.membership.McastService"
>>>> address="228.0.0.4"
>>>> port="45563"
>>>> frequency="500"
>>>> dropTime="30000"/>
>>>> <Receiver
>>>> className="org.apache.catalina.tribes.transport.nio.NioReceiver"
>>>> address="auto"
>>>> port="4000"
>>>> selectorTimeout="5000"
>>>> timeout="60000"
>>>> maxThreads="6"/>
>>>>
>>>> <Sender
>>>> className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
>>>> <Transport
>>>> className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"
>>>> timeout="60000"
>>>> keepAliveCount="0"/>
>>>> </Sender>
>>>> <Interceptor
>>>> className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
>>>> <Interceptor
>>>> className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>
>>>> <!-- <Interceptor
>>>> className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
>>>> -->
>>>> </Channel>
>>>> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"
>>>>
>>>> filter=".*\.gif|.*\.js|.*\.jpeg|.*\.jpg|.*\.png|.*\.htm|.*\.html|.*\.css|.*\.txt"/>
>>>> <Valve
>>>> className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
>>>> <ClusterListener
>>>> className="org.apache.catalina.ha.session.ClusterSessionListener"/>
>>>> <ClusterListener
>>>> className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>
>>>> </Cluster>
>>>
>>>
>>> Wow. That's pretty neat, I've never seen Tomcat start up with just the
>>> cluster definition.
>>>
>>> How about you:
>>>
>>> 1) remove all comments
>>> 2) remove all passwords
>>> 3) post the whole server.xml inline in your next reply
>
>
> Dhaval,
>
>
> Please try to avoid posting in HTML. The font is sometimes difficult to read.
>
> Please don't cc me. I get the same message on the list, and with about 200
> mail messages per day on this account I might overlook stuff if I get a lot
> of duplicate messages.
>
> Please post stuff inline and not as attachments. While I got the attached
> server.xml file, the list generally strips attachments.
>
> All that being said, here are my comments:
>
> <!-- From your server.xml -->
> <Listener
> className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
> <Listener
> className="org.apache.catalina.core.JasperListener" />
> <Listener
> className="org.apache.catalina.mbeans.ServerLifecycleListener" />
> <Listener
> className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
>
> So you've removed the memory leak prevention listener from your
> server.xml? Is there any reason why you've done that?
>
> <!-- from your server.xml -->
> <Connector port="8080" protocol="HTTP/1.1"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> <Connector port="8009"
> protocol="AJP/1.3"
> redirectPort="8443"
> backlog="100"
> maxThreads="40000" />
>
> No URIEncoding="UTF-8" on your connectors? I checked your web site and
> there doesn't seem to be any characters that would be
> impacted. However, I was thinking that setting UTF-8 on all connectors
> is in general a good thing.
>
> 40000 threads for the AJP connector with only a backlog of 100? I hope that
>
> a) your Apache HTTPD server is configured appropriately
> b) you can have this many file descriptors open
>
> <!-- from your server.xml -->
> <Membership
> className="org.apache.catalina.tribes.membership.McastService"
> address="228.0.0.4"
> port="45564"
> frequency="500"
> dropTime="30000"/>
>
> You said that you use this same server.xml for all 10
> Tomcats. However, in a previous message you said you were trying to
> cluster 7 Tomcats (192.168.3.5 to 192.168.3.11). If you use the same
> multicast address and port for all 10 Tomcats, then all 10 Tomcats
> will be a part of the cluster.
>
>> I have tested the below cluster manager; as per the instruction i have
>
>> changed. However, when we try to deploy the apps on tomcat it was
>> throwing error that
>
> Does this mean that the cluster actually starts without your web
> application? If you've modified the logging.properties file, what does
> the cluster logging file say? Please post the information inline as the
> mailing list tends to strip attachments.
>
> The default dropTime is 3000 ms (3 seconds). Is your network busy
>
> enough so that a 30 second drop time is reasonable? If it is, then
> maybe a better networking infrastructure is in order.
>
> <!-- from your server.xml -->
> <Sender
> className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
> <Transport
> className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"
> timeout="60000"
> keepAliveCount="0"/>
> </Sender>
>
> keepAliveCount="0" ?
>
> From the documentation:
>
> The number of requests that can go through the socket before the
> socket is closed, and reopened for the next request. The default value
> is -1, which is unlimited.
>
> So you're saying here that NO requests can go through the socket
> before the socket is closed? At the best interpretation, you'll get
> one message through the socket, then the socket closes and
> reopens. This doesn't sound very performant.
>
> Other than that, your clustering setup does not look a lot different
> than mine. I place my cluster in the <Host> element since I am
> experimenting with farm deployment. Mine works even when changing from
> the DeltaManager (only three node cluster) to the BackupManager.
>
> What is in your application's context.xml and web.xml files? Please
> post both (inline - the list tends to strip attachments), with
> comments and sensitive information removed.
>
> I suspect that you have a listener defined in either context.xml or
> web.xml.
>
> All you really need to do to get session clustering to work is:
>
> 1. <distributable/> in web.xml
> 2. Make sure that all session objects are serializalble.
>
> Actually there is a bit more, but the above are the basics.
>
> . . . . just my two cents.
> /mde/+1 to all that. p -- [key:62590808]
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