Thanks for your reply. We will consider upgrading, but can you explain the error that we are facing. Then we may be able to reproduce this and see if it was fixed with 5.5.27.
-----Ursprüngliche Nachricht----- Von: Pid [mailto:p...@pidster.com] Gesendet: Dienstag, 23. Juni 2009 13:50 An: Tomcat Users List Betreff: Re: Problem with Tomcat Cluster (read acknowledgement from server) Ehlers, Kolja wrote: > Hello everybody, > > we are running a couple of clustered Tomcat 5.5.9 instances and keep > experiencing problems in our productive environment. This is the > configuration: The current version is 5.5.27, there have been a lot of bug fixes since 5.5.9. You should definitely upgrade to a more recent version before proceeding. Be careful to read the complete change log before you do so as there are several fixes that often catch people out. p > <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" > > managerClassName="org.apache.catalina.cluster.session.DeltaManager" > expireSessionsOnShutdown="false" > useDirtyFlag="true" > notifyListenersOnReplication="true"> > > <Membership > className="org.apache.catalina.cluster.mcast.McastService" > mcastAddr="239.255.0.1" > mcastPort="45789" > mcastFrequency="500" > mcastDropTime="3000"/> > > <Receiver > > className="org.apache.catalina.cluster.tcp.ReplicationListener" > tcpListenAddress="10.0.0.30" > tcpListenPort="4439" > tcpSelectorTimeout="100" > tcpThreadCount="2"/> > > <Sender > > className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" > replicationMode="pooled" > ackTimeout="15000"/> > > <Valve > className="org.apache.catalina.cluster.tcp.ReplicationValve" > > filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.tx > t;"/> > > <Deployer > className="org.apache.catalina.cluster.deploy.FarmWarDeployer" > tempDir="/tmp/war-temp38/" > deployDir="/opt/jakarta/dep38/war-deploy/" > watchDir="/opt/jakarta/dep38/war-listen/" > watchEnabled="false"/> > </Cluster> > > This is the log of node2: > > Jun 22, 2009 10:06:16 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:06:16 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:06:31 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:06:31 AM > org.apache.catalina.cluster.tcp.ReplicationTransmitter sendMessageData > WARNING: Unable to send replicated message, is server down? > java.net.SocketTimeoutException: Read timed out > at java.net.SocketInputStream.socketRead0(Native Method) > at java.net.SocketInputStream.read(SocketInputStream.java:129) > at java.net.SocketInputStream.read(SocketInputStream.java:182) > at > org.apache.catalina.cluster.tcp.DataSender.waitForAck(DataSender.java:530) > at > org.apache.catalina.cluster.tcp.DataSender.pushMessage(DataSender.java:508) > at > org.apache.catalina.cluster.tcp.DataSender.sendMessage(DataSender.java:378) > at > org.apache.catalina.cluster.tcp.PooledSocketSender.sendMessage(PooledSocketSender.java:118) > at > org.apache.catalina.cluster.tcp.ReplicationTransmitter.sendMessageData(ReplicationTransmitter.java:646) > at > org.apache.catalina.cluster.tcp.ReplicationTransmitter.sendMessage(ReplicationTransmitter.java:348) > at > org.apache.catalina.cluster.tcp.SimpleTcpCluster.send(SimpleTcpCluster.java:466) > at > org.apache.catalina.cluster.tcp.SimpleTcpCluster.send(SimpleTcpCluster.java:495) > at > org.apache.catalina.cluster.session.DeltaManager.sessionExpired(DeltaManager.java:811) > at > org.apache.catalina.cluster.session.DeltaSession.expire(DeltaSession.java:730) > at > org.apache.catalina.cluster.session.DeltaSession.expire(DeltaSession.java:653) > at > org.apache.catalina.cluster.session.DeltaSession.expire(DeltaSession.java:641) > at > org.apache.catalina.cluster.session.DeltaSession.invalidate(DeltaSession.java:1042) > at > org.apache.catalina.cluster.session.DeltaSessionFacade.invalidate(DeltaSessionFacade.java:150) > at webapp.control.FrontServlet.doProcessRequest(Unknown Source) > at webapp.control.FrontServlet.doGet(Unknown Source) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at filters.TimeoutFilter.doFilter(TimeoutFilter.java:53) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at > org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:145) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307) > at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385) > at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748) > at > org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678) > at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:595) > Jun 22, 2009 10:06:31 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:06:46 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:06:56 AM org.apache.catalina.cluster.tcp.DataSender > <init> > INFO: Create sender [cwww1/10.0.0.30:4,437] Jun 22, 2009 10:07:01 AM > org.apache.catalina.cluster.tcp.DataSender waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > Jun 22, 2009 10:07:02 AM org.apache.catalina.cluster.tcp.DataSender > waitForAck > WARNING: Wasnt able to read acknowledgement from > server[{0}:{1,number,integer}] in {2,number,integer} ms. Disconnecting > socket, and trying again. > > The node1 logs do not show anything during that time. I have read that > for a productive environment to increase mcastFrequency="500", > mcastDropTime="3000" and to install the cluster fix. But my guess is that the > problem with receiving the acknowledgement is more or a session replication problem and not a problem receiving the tomcat heartbeats. > > Thanks for your help > > Regards > > KE > > Geschäftsführung: Dr. Michael Fischer, Reinhard Eisebitt Amtsgericht > Köln HRB 32356 > Steuer-Nr.: 217/5717/0536 > Ust.Id.-Nr.: DE 204051920 > -- > This email transmission and any documents, files or previous email > messages attached to it may contain information that is confidential > or legally privileged. If you are not the intended recipient or a > person responsible for delivering this transmission to the intended > recipient, you are hereby notified that any disclosure, copying, > printing, distribution or use of this transmission is strictly > prohibited. If you have received this transmission in error, please > immediately notify the sender by telephone or return email and delete > the original transmission and its attachments without reading or saving in > any manner. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Geschäftsführung: Dr. Michael Fischer, Reinhard Eisebitt Amtsgericht Köln HRB 32356 Steuer-Nr.: 217/5717/0536 Ust.Id.-Nr.: DE 204051920 -- This email transmission and any documents, files or previous email messages attached to it may contain information that is confidential or legally privileged. 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