12:47 p.m.
Hello All,
I'm having problems with my setup of clustering.
Here is the information, and the problem
2 JBOSS Nodes Running 4.0.5.GA
10:19:37,494 INFO [Server] Starting JBoss (MX MicroKernel)...
| 10:19:37,496 INFO [Server] Release ID: JBoss [Zion] 4.0.5.GA (build:
CVSTag=Branch_4_0 date=200610162339)
An apache frontend running.. 2.2.4
Server version: Apache/2.2.4 (Unix)
| Server built: Jul 1 2007 18:11:30
Apache frontend is running Mod JK 1.2.23
Module Name: mod_jk-1.2.23-apache-2.2.x.so
|
httpd.conf
-----------
<IfModule mod_jk.c>
| JkLogFile /var/log/httpd/modjk.log
| JkLogLevel info
| JkWorkersFile /etc/httpd/jkworkers.properties
| JkShmFile /var/log/httpd/jk.shm
| JkOptions +ForwardKeySize +ForwardURICompatUnparsed -ForwardDirectories
| LogFormat "%h %l %u %t \"%r\" %>s %b %{JK_WORKER_NAME}n
%{JK_LB_FIRST_NAME}n %{JK_LB_FIRST_BUSY}n %{JK_LB_LAST_NAME}n %{JK_LB_LAST_BUSY}n"
mod_jk_log
| CustomLog /var/log/httpd/modjk_access.log mod_jk_log
|
| # JK Balancer manager
| <VirtualHost *:80>
| ServerAdmin test(a)test.com
| DocumentRoot /srv/httpd/htdocs
| JkMount /* jboss
| </VirtualHost>
|
| <VirtualHost *:5555>
| ServerAdmin test(a)test.com
| DocumentRoot /srv/httpd/htdocs
| <Location /status/>
| JkMount jkstatus
| </Location>
| </VirtualHost>
| </IfModule>
jkworkers.properties
-----------------------
| worker.list=jboss,jkstatus
|
| # First Node
| worker.node1.type=ajp13
| worker.node1.host=192.168.7.235
| worker.node1.port=7929
| worker.node1.lbfactor=1
| worker.node1.socket_timeout=10
| worker.node1.connect_timeout=20000
|
| # Second Node
| worker.node2.type=ajp13
| worker.node2.host=192.168.7.236
| worker.node2.port=7929
| worker.node2.lbfactor=1
| worker.node2.socket_timeout=10
| worker.node2.connect_timeout=20000
|
| # Load balancer
| worker.jboss.type=lb
| worker.jboss.balance_workers=node1,node2
| worker.jboss.sticky_session=1
|
| worker.jkstatus.type=status
tc5-cluster.sar/META-INF/jboss-service.xml
<attribute
name="ClusterName">Tomcat-${jboss.partition.name:Cluster}</attribute>
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
| <attribute name="CacheMode">REPL_ASYNC</attribute>
|
-----------------------
Here's the issue.
I start up the cluster, and all works fine. The moment I start putting any load onto it I
get the following problem....
10:25:41,060 INFO [CacheListener] Possible concurrency problem: Replicated version id 22
matches in-memory version for session ml5CzYIuE0X62k2vNReP4g**
| 10:25:59,215 INFO [CacheListener] Possible concurrency problem: Replicated version id
10 matches in-memory version for session GXDm0EZryMgDh-e17hE2Eg**
| 10:26:04,487 INFO [CacheListener] Possible concurrency problem: Replicated version id
11 matches in-memory version for session GXDm0EZryMgDh-e17hE2Eg**
| 10:26:04,508 WARN [MsgContext] Error sending end packet
| java.net.SocketException: Broken pipe
| at java.net.SocketOutputStream.socketWrite0(Native Method)
| at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
| at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
| at org.apache.jk.common.ChannelSocket.send(ChannelSocket.java:531)
| at org.apache.jk.common.JkInputStream.endMessage(JkInputStream.java:112)
| at org.apache.jk.core.MsgContext.action(MsgContext.java:293)
| at org.apache.coyote.Response.action(Response.java:182)
| at org.apache.coyote.Response.finish(Response.java:304)
| at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:204)
| at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
| at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
| at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
| at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
| at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
| at java.lang.Thread.run(Thread.java:595)
| 10:26:04,512 WARN [ChannelSocket] processCallbacks status 2
| 10:31:06,604 INFO [CacheListener] Possible concurrency problem: Replicated version id
4 matches in-memory version for session ml5CzYIuE0X62k2vNReP4g**
| 10:31:10,643 INFO [CacheListener] Possible concurrency problem: Replicated version id
5 matches in-memory version for session ml5CzYIuE0X62k2vNReP4g**
Does anyone have any idea why this problem is occuring?
Any solutions to this problem, is an issue with my configuration?
Thanks for the help in Advance,
Ben
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