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From Filip Hanik - Dev Lists <devli...@hanik.com>
Subject Re: Tomcat 6 clustering problem
Date Tue, 03 Jun 2008 00:54:17 GMT
POST your log, does it show member discovery?

Filip

Gangadhar Prusty wrote:
> Hi,
>
> My logs don't show any error/warning messages.
>
> But it still doesn't replicate/share the ServletContext attributes.
>
> Does the addition of below element in the *context.xml* mean that the *
> ServletContext* attributes are replicated/shared across other cluster
> members?
>
> <Context className="org.apache.catalina.ha.context.ReplicatedContext"/>
>
>
>
> Thanks again.
>
>
>
>
>
> On 6/2/08, Filip Hanik - Dev Lists <devlists@hanik.com> wrote:
>   
>> what do your logs say?
>>
>> gangadhar p wrote:
>>
>>     
>>> Hi Filip,
>>>  Thanks for your prompt response.
>>>  I added an attribute to the ServletContext object in one instance and
>>> tried
>>> to access the same attribute in another instance and it returns null.
>>>
>>> The <Cluster> (in server.xml) element has the attribute
>>> managerClassName=org.apache.catalina.cluster.session.DeltaManager ? Or
>>> org.apache.catalina.session.PersistentReplicationManager is required to be
>>> set?
>>>  Do you want to see my server.xml files and code?
>>>  Thank you again.
>>>
>>>
>>> Filip Hanik - Dev Lists wrote:
>>>
>>>
>>>       
>>>> what does your log say?
>>>>
>>>> Filip
>>>>
>>>> gangadhar p wrote:
>>>>
>>>>
>>>>         
>>>>> Hi Guys, The Tomcat 6 documentation
>>>>> (http://tomcat.apache.org/tomcat-6.0-doc/config/cluster.html) says that
>>>>> the
>>>>> Context (ServletContext, right ?) attributes are replicated across
>>>>> cluster
>>>>> members when the below element is added in either
>>>>> <tomcat-home>\conf\server.xml or <tomcat-home>\conf\context.xml
file.
>>>>> <Context className="org.apache.catalina.ha.context.ReplicatedContext"/>
>>>>>
>>>>> But actually the ServletContext attributes are not replicated across
all
>>>>> other cluster members!!!
>>>>>
>>>>> The added contents in my server.xml is given below:
>>>>>
>>>>>                <Cluster
>>>>> className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
>>>>>
>>>>>  managerClassName="org.apache.catalina.cluster.session.DeltaManager"
>>>>>                 expireSessionsOnShutdown="false"
>>>>>                 useDirtyFlag="true">
>>>>>
>>>>>            <Membership
>>>>> className="org.apache.catalina.cluster.mcast.McastService"
>>>>>                mcastAddr="228.0.0.4"
>>>>>                mcastPort="45564"
>>>>>                mcastFrequency="500"
>>>>>                mcastDropTime="3000"/>
>>>>>
>>>>>            <Receiver
>>>>> className="org.apache.catalina.cluster.tcp.ReplicationListener"
>>>>>                tcpListenAddress="127.0.0.1"
>>>>>                tcpListenPort="4001"
>>>>>                tcpSelectorTimeout="100"
>>>>>                tcpThreadCount="6"/>
>>>>>
>>>>>            <Sender
>>>>>
>>>>> className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
>>>>>                replicationMode="pooled"/>
>>>>>            <Valve
>>>>> className="org.apache.catalina.cluster.tcp.ReplicationValve"
>>>>>
>>>>>  filter=".*\.gif;.*\.js;.*\.jpg;.*\.htm;.*\.html;.*\.txt;"/>
>>>>>                        <ClusterListener
>>>>> className="org.apache.catalina.cluster.session.ClusterSessionListener"/>
>>>>>
>>>>>        </Cluster>
>>>>>                <Context path=""
>>>>> docBase="G:\RealNetworks\apache-tomcat-6.0.16\webapps\ROOT"
>>>>> crossContext="true" debug="0" reloadable="true" privileged="true"/>
>>>>>
>>>>> And the added contents in config.xml file is given below:
>>>>>
>>>>> <Context className="org.apache.catalina.ha.context.ReplicatedContext">
>>>>>
>>>>> Any modifications required?
>>>>> Any suggestions would be highly appreciated.
>>>>> Thanks in advance.
>>>>>
>>>>>
>>>>>           
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>>>>
>>>>
>>>>
>>>>
>>>>
>>>>         
>>>
>>>       
>> ---------------------------------------------------------------------
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>>
>>
>>     
>
>   
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>
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>   


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