Hi,
I am using pojocache for replication. I have 4 machines for running my
clustered application in Tomcat (Tomcat v 5.5.20 on FC-5 OS with JDK 1.5). One
of it is running as loadbalancer and Apache 2.2 is used for that. Tomcat
clustering is also enabled. My problem is that only two of my systems are
getting participated in cache transaction. i.e. the objects that are put into
the cache are not replicated over to other servers and hence I am not able to
retrieve them at a later point (when the system from which objects are put into
cache goes down)
I have the following conf. for clustering in server.xml of tomcat :
| <Cluster
|
className="org.apache.catalina.cluster.tcp.SimpleTcpCluster"
| clusterLogName="clusterlog"
doClusterLog="true"
|
manager.className="org.apache.catalina.cluster.session.DeltaManager"
| manager.expireSessionsOnShutdown="false"
|
manager.notifyListenersOnReplication="false"
|
manager.notifySessionListenersOnReplication="false"
| manager.sendAllSessions="false"
manager.sendAllSessionsSize="500"
| manager.sendAllSessionsWaitTime="20">
|
| <Membership
|
className="org.apache.catalina.cluster.mcast.McastService"
| mcastAddr="228.0.0.4"
|
mcastClusterDomain="TreeCache-Cluster" mcastDropTime="30000"
| mcastFrequency="200"
mcastPort="45564" />
|
| <Receiver
|
className="org.apache.catalina.cluster.tcp.ReplicationListener"
| tcpListenAddress="192.168.0.5"
tcpListenPort="9015"
| tcpSelectorTimeout="100"
tcpThreadCount="6" />
|
| <Sender ackTimeout="15000"
|
className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
| doProcessingStats="true"
doTransmitterProcessingStats="true"
| doWaitAckStats="true"
keepAliveMaxRequestCount="-1"
| keepAliveTimeout="80000"
queueCheckLock="true" queueDoStats="true"
| queueTimeWait="true"
recoverCounter="6" recoverTimeout="500"
|
replicationMode="fastasyncqueue" waitForAck="true" />
|
| <Valve
|
className="org.apache.catalina.cluster.tcp.ReplicationValve"
|
filter=".*\.gif;.*\.js;.*\.css;.*\.png;.*\.jpeg;.*\.jpg;.*\.html;.*\.txt;"
| primaryIndicator="true" />
|
| <Valve
|
className="org.apache.catalina.cluster.session.JvmRouteBinderValve"
| enabled="true" />
| <ClusterListener
|
className="org.apache.catalina.cluster.session.ClusterSessionListener" />
| <ClusterListener
|
className="org.apache.catalina.cluster.session.JvmRouteSessionIDBinderListener"
/>
|
| <Deployer
|
className="org.apache.catalina.cluster.deploy.FarmWarDeployer"
|
deployDir="${catalina.base}/war-deploy/"
|
tempDir="${catalina.base}/war-temp"
|
watchDir="${catalina.base}/war-listen/" watchEnabled="true" />
| </Cluster>
|
Also my cache config file looks like this :
| <?xml version="1.0" encoding="UTF-8" ?>
|
| <server>
| <mbean code="org.jboss.cache.aop.PojoCache"
| name="jboss.cache:service=PojoCache">
| <depends>jboss:service=TransactionManager</depends>
|
| <!-- Configure the TransactionManager -->
| <attribute name="TransactionManagerLookupClass">
| org.jboss.cache.DummyTransactionManagerLookup
| </attribute>
|
| <!-- Isolation level : SERIALIZABLE
| REPEATABLE_READ (default)
| READ_COMMITTED
| READ_UNCOMMITTED
| NONE
| -->
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
|
| <!-- Valid modes are LOCAL, REPL_ASYNC and
REPL_SYNC -->
| <attribute name="CacheMode">REPL_SYNC</attribute>
|
| <!-- Just used for async repl: use a replication queue
-->
| <attribute name="UseReplQueue">false</attribute>
|
| <!-- Replication interval for replication queue (in
ms) -->
| <attribute name="ReplQueueInterval">0</attribute>
|
| <!-- Max number of elements which trigger
replication -->
| <attribute name="ReplQueueMaxElements">0</attribute>
|
| <!-- Name of cluster. Needs to be the same for all clusters,
in order
| to find each other
| -->
| <attribute name="ClusterName">Sample-Cache</attribute>
|
| <!-- JGroups protocol stack properties. Can also be a URL,
| e.g. file:/home/bela/default.xml
| <attribute name="ClusterProperties"></attribute>
| -->
|
| <!--bind_addr="75.126.68.196" -->
| <attribute name="ClusterConfig">
|
| <config>
| <!-- UDP: if you have a multihomed machine,
| set the bind_addr attribute to the
appropriate NIC IP address, e.g bind_addr="192.168.0.2"
| -->
| <!-- UDP: On Windows machines, because of the
media sense feature
| being broken with multicast (even after
disabling media sense)
| set the loopback attribute to true
| -->
| <UDP mcast_addr="228.1.2.3" mcast_port="48866"
| ip_ttl="64" ip_mcast="true"
mcast_send_buf_size="150000"
| mcast_recv_buf_size="80000"
ucast_send_buf_size="150000"
| ucast_recv_buf_size="80000"
loopback="false" />
| <PING timeout="2000" num_initial_members="3"
| up_thread="false" down_thread="false" />
| <MERGE2 min_interval="10000"
max_interval="20000" />
| <FD_SOCK />
| <VERIFY_SUSPECT timeout="1500" up_thread="false"
| down_thread="false" />
| <pbcast.NAKACK gc_lag="50"
| retransmit_timeout="600,1200,2400,4800"
max_xmit_size="8192"
| up_thread="false" down_thread="false" />
| <UNICAST timeout="600,1200,2400"
window_size="100"
| min_threshold="10" down_thread="false"
/>
| <pbcast.STABLE desired_avg_gossip="20000"
| up_thread="false" down_thread="false" />
| <FRAG frag_size="8192" down_thread="false"
| up_thread="false" />
| <pbcast.GMS join_timeout="5000"
| join_retry_timeout="2000" shun="true"
print_local_addr="true" />
| <pbcast.STATE_TRANSFER up_thread="true"
| down_thread="true" />
| </config>
| </attribute>
|
| <!-- Whether or not to fetch state on joining a cluster
-->
| <attribute name="FetchStateOnStartup">true</attribute>
|
| <!-- The max amount of time (in milliseconds) we
wait until the
| initial state (ie. the contents of the cache) are
retrieved from
| existing members in a clustered environment
|
| -->
| <attribute name="InitialStateRetrievalTimeout">5000</attribute>
|
| <!-- Number of milliseconds to wait until all
responses for a
| synchronous call have been received.
| -->
| <attribute name="SyncReplTimeout">15000</attribute>
|
| <!-- Max number of milliseconds to wait for a lock acquisition
-->
| <attribute name="LockAcquisitionTimeout">10000</attribute>
|
| <!-- Name of the eviction policy class. -->
| <attribute name="EvictionPolicyClass" />
| </mbean>
| </server>
|
Any help would be much appreciated !!
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