Hi,
We have our CAS(3.5.2) environment load balanced and Ehcache for ticket
registry configured to do manual peer discovery for ticket replication. I am
running into a situation where service ticket fails validation in one of the
scenario. I have listed the scenarios below :
Start CAS server 1
Start CAS server 2
Access a CASified application, flows redirects to CAS login page, log into the
application
Scenario 1:
Service ticket created on server 1 successfully
Service ticket validated on server 1 successfully
Scenario 2:
Service ticket created on server 2 successfully
Service ticket validated on server 2 successfully
Scenario 3:
Service ticket created on server 2 successfully
Service ticket validated on server 1 successfully
Scenario 4:
Service ticket gets created on server 1 successfully
Service ticket validation fails on server 2
During this time, (from the log files) when server 2 receives the service
ticket, service ticket is already expired.
Scenario 5:
Restart only server 1, access casified application;
Scenario 1 & 2 are successful
Service ticket created on server 1 is validated on server 2 successfully
Service ticket created on server 2 fails validation on server 1 (scenario 3 and
4 are switched)
I increased the ST expiration time from 10 secs to 1 min and I still see the
same behavior. I see the behavior bounce between server 1 & 2 when they are
restarted in sequence (start server 1, server 2 has the issue, restart server 2
now issue jumps to server 1 and so on)
Has anyone else encountered this kind of behavior? Is my ehcache configuration
wrong?
Any idea what I am doing wrong? I have attached the ticketRegistry and
ehcache-replication for reference.
Thanks,
Rakesh
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:p="http://www.springframework.org/schema/p";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd";>
<description>
Configuration for the EhCache TicketRegistry which stores the tickets in a distributed EhCache and cleans
them out as specified intervals.
</description>
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation" value="classpath:ehcache-replicated.xml" />
<property name="shared" value="true" />
<property name="cacheManagerName" value="ticketRegistryCacheManager" />
</bean>
<bean id="mbeanServer" class="org.springframework.jmx.support.MBeanServerFactoryBean">
<property name="locateExistingServerIfPossible" value="true" />
</bean>
<bean id="managementService" class="net.sf.ehcache.management.ManagementService" init-method="init" destroy-method="dispose">
<constructor-arg ref="cacheManager" />
<constructor-arg ref="mbeanServer" />
<constructor-arg value="true" />
<constructor-arg value="true" />
<constructor-arg value="true" />
<constructor-arg value="true" />
</bean>
<bean id="ticketRegistry"
class="org.jasig.cas.ticket.registry.EhCacheTicketRegistry"
p:serviceTicketsCache-ref="serviceTicketsCache"
p:ticketGrantingTicketsCache-ref="ticketGrantingTicketsCache" />
<bean id="abstractTicketCache" abstract="true"
class="org.springframework.cache.ehcache.EhCacheFactoryBean"
p:cacheManager-ref="cacheManager"
p:diskExpiryThreadIntervalSeconds="0"
p:diskPersistent="false"
p:eternal="false"
p:maxElementsInMemory="10000"
p:maxElementsOnDisk="20000"
p:memoryStoreEvictionPolicy="LRU"
p:overflowToDisk="true"
p:bootstrapCacheLoader-ref="ticketCacheBootstrapCacheLoader" />
<bean id="serviceTicketsCache"
class="org.springframework.cache.ehcache.EhCacheFactoryBean"
parent="abstractTicketCache"
p:cacheName="cas_st"
p:timeToIdle="0"
p:timeToLive="300"
p:cacheEventListeners-ref="ticketRMISynchronousCacheReplicator" />
<bean id="ticketGrantingTicketsCache"
class="org.springframework.cache.ehcache.EhCacheFactoryBean"
p:cacheName="cas_tgt"
p:timeToIdle="0"
p:timeToLive="7201"
p:cacheEventListeners-ref="ticketRMIAsynchronousCacheReplicator"
p:bootstrapCacheLoader-ref="ticketCacheBootstrapCacheLoader" />
<bean id="ticketRMISynchronousCacheReplicator" class="net.sf.ehcache.distribution.RMISynchronousCacheReplicator">
<constructor-arg name="replicatePuts" value="true" />
<constructor-arg name="replicatePutsViaCopy" value="true" />
<constructor-arg name="replicateUpdates" value="true" />
<constructor-arg name="replicateUpdatesViaCopy" value="true" />
<constructor-arg name="replicateRemovals" value="true" />
</bean>
<bean id="ticketRMIAsynchronousCacheReplicator" class="net.sf.ehcache.distribution.RMIAsynchronousCacheReplicator" parent="ticketRMISynchronousCacheReplicator">
<constructor-arg name="replicationInterval" value="10000" />
<constructor-arg name="maximumBatchSize" value="100" />
</bean>
<bean id="ticketCacheBootstrapCacheLoader" class="net.sf.ehcache.distribution.RMIBootstrapCacheLoader">
<constructor-arg name="asynchronous" value="true" />
<constructor-arg name="maximumChunkSize" value="5000000" />
</bean>
</beans>
<ehcache name="ehCacheTicketRegistryCache"
updateCheck="false"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd";>
<diskStore path="java.io.tmpdir/cas"/>
<!-- Manual Peer Discovery -->
<cacheManagerPeerProviderFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
properties="peerDiscovery=manual,
rmiUrls=//p2.iit.edu:41001/cas_st|//p2.iit.edu:41001/cas_tgt"
propertySeparator="," />
<cacheManagerPeerListenerFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory"
properties="port=41001,
remoteObjectPort=41002,
socketTimeoutMillis=5000"
propertySeparator="," />
</ehcache>
