Re: how to determine clustering problem?
turn on logging, see Tomcat docs then through log4j you can turn on logging for only org.apache.catalina.cluster and you will be able to see all messages going through. Filip John MccLain wrote: We have a webapp that runs fine in 1 tomcat instance. We have insured that all classes being stored in session are serializable When I put the app into a cluster of 3 Tomcats on my machine, it kind of works, but I am getting inconsistent failures. It is like constantly running down rabbit holes as the errors change continually. Is there a way to debug clustered apps? If this is a possible memory, issue, How do I change the memory configuration for each Tomcat instance? Is there a timeout for each screen request? can I configure it? John McClain Senior Software Engineer TCS Healthcare [EMAIL PROTECTED] (530)886-1700x235 Skepticism is the first step toward truth - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
how to determine clustering problem?
We have a webapp that runs fine in 1 tomcat instance. We have insured that all classes being stored in session are serializable When I put the app into a cluster of 3 Tomcats on my machine, it kind of works, but I am getting inconsistent failures. It is like constantly running down rabbit holes as the errors change continually. Is there a way to debug clustered apps? If this is a possible memory, issue, How do I change the memory configuration for each Tomcat instance? Is there a timeout for each screen request? can I configure it? John McClain Senior Software Engineer TCS Healthcare [EMAIL PROTECTED] (530)886-1700x235 Skepticism is the first step toward truth - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Clustering problem with web.xml
Hi Tomcat user, I'm trying to setup a in memory session replication with tomcat. I have: -tomcat 5.0.24 -java 1.4.2_04 - Red Hat Enterprise Linux 3 I have two machine dl580-1 and dl580-2 with tcp/ip and multicast enabled. this is the cluster part of server.xml. 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=224.0.0.1 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000/ Receiver className=org.apache.catalina.cluster.tcp.ReplicationListener tcpListenAddress=auto 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;/ /Cluster when I try to put the label distributable/ in jakarta-tomcat-5.0.24/webapps/jsp-examples/WEB-INF/web.xml I recive in the catalina.out these errors: INFO: Installing web application at context path /jsp-examples from URL file:/home/tomcat/jakarta-tomcat-5.0.24/webapps/jsp-examples May 13, 2004 12:50:11 PM org.apache.commons.digester.Digester fatalError SEVERE: Parse Fatal Error at line 21 column 2: The markup in the document following the root element must be well-formed. org.xml.sax.SAXParseException: The markup in the document following the root element must be well-formed. at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.digester.Digester.parse(Digester.java:1548) at org.apache.catalina.startup.ContextConfig.applicationConfig(ContextConfig.java:263) at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:624) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:216) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4268) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595) at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277) at org.apache.catalina.core.StandardHost.install(StandardHost.java:832) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:683) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:964) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091) at org.apache.catalina.core.StandardHost.start(StandardHost.java:789) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478) at org.apache.catalina.core.StandardService.start(StandardService.java:476) at org.apache.catalina.core.StandardServer.start(StandardServer.java:2298) at org.apache.catalina.startup.Catalina.start(Catalina.java:556) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at
Re: Clustering problem with web.xml
check your web.xml for a mistake The markup in the document following the root element must be well-formed. or open it in an xml editor, it will tell you right away Filip - Original Message - From: Gabriele Paciucci [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 13, 2004 6:09 AM Subject: Clustering problem with web.xml Hi Tomcat user, I'm trying to setup a in memory session replication with tomcat. I have: -tomcat 5.0.24 -java 1.4.2_04 - Red Hat Enterprise Linux 3 I have two machine dl580-1 and dl580-2 with tcp/ip and multicast enabled. this is the cluster part of server.xml. 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=224.0.0.1 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000/ Receiver className=org.apache.catalina.cluster.tcp.ReplicationListener tcpListenAddress=auto 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;/ /Cluster when I try to put the label distributable/ in jakarta-tomcat-5.0.24/webapps/jsp-examples/WEB-INF/web.xml I recive in the catalina.out these errors: INFO: Installing web application at context path /jsp-examples from URL file:/home/tomcat/jakarta-tomcat-5.0.24/webapps/jsp-examples May 13, 2004 12:50:11 PM org.apache.commons.digester.Digester fatalError SEVERE: Parse Fatal Error at line 21 column 2: The markup in the document following the root element must be well-formed. org.xml.sax.SAXParseException: The markup in the document following the root element must be well-formed. at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.digester.Digester.parse(Digester.java:1548) at org.apache.catalina.startup.ContextConfig.applicationConfig(ContextConfig.java:263) at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:624) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:216) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4268) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:823) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595) at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:277) at org.apache.catalina.core.StandardHost.install(StandardHost.java:832) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:683) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:964) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091) at org.apache.catalina.core.StandardHost.start(StandardHost.java:789) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478) at org.apache.catalina.core.StandardService.start(StandardService.java:476
RE: Clustering problem with web.xml
Hi All, I am using Tomcat 3.3 and would like to know what properties I need to set up in server.xml so that I can look up a datasource in the context. For example: initCtx.lookup(jdbc/OracleDatasource); Thanks Ram -Original Message- From: Filip Hanik - Dev [mailto:[EMAIL PROTECTED] Sent: Thursday, May 13, 2004 10:52 AM To: Tomcat Users List; [EMAIL PROTECTED] Subject: Re: Clustering problem with web.xml check your web.xml for a mistake The markup in the document following the root element must be well-formed. or open it in an xml editor, it will tell you right away Filip - Original Message - From: Gabriele Paciucci [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 13, 2004 6:09 AM Subject: Clustering problem with web.xml Hi Tomcat user, I'm trying to setup a in memory session replication with tomcat. I have: -tomcat 5.0.24 -java 1.4.2_04 - Red Hat Enterprise Linux 3 I have two machine dl580-1 and dl580-2 with tcp/ip and multicast enabled. this is the cluster part of server.xml. 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=224.0.0.1 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000/ Receiver className=org.apache.catalina.cluster.tcp.ReplicationListener tcpListenAddress=auto 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;/ /Cluster when I try to put the label distributable/ in jakarta-tomcat-5.0.24/webapps/jsp-examples/WEB-INF/web.xml I recive in the catalina.out these errors: INFO: Installing web application at context path /jsp-examples from URL file:/home/tomcat/jakarta-tomcat-5.0.24/webapps/jsp-examples May 13, 2004 12:50:11 PM org.apache.commons.digester.Digester fatalError SEVERE: Parse Fatal Error at line 21 column 2: The markup in the document following the root element must be well-formed. org.xml.sax.SAXParseException: The markup in the document following the root element must be well-formed. at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatc h(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.digester.Digester.parse(Digester.java:1548) at org.apache.catalina.startup.ContextConfig.applicationConfig(ContextConfig.ja va:263) at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:624) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java: 216) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor t.java:119) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4268) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:8 23) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:807) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595) at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.j ava:277) at org.apache.catalina.core.StandardHost.install(StandardHost.java:832) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:683 ) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:964) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:349) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSuppor t.java:119
Clustering Problem
I was having random problems with clustering when starting up. Mostly it had to do with Timing out when the manager was starting up. I built the CVS version and it solved that problem. But it has caused some serious performance problems. First a little background. I have 2 servers, dual 300mhz cpq proliants, both running Redhat - 9, Tomcat 5.0.16 (with catalina-cluster.jar build from cvs) The multicast packets are restricted to a crossover link between the servers. There are 3 hosts in the server.xml, all with clustering set up. They all function just fine. But.the cpu's spikes up to 100% if I start up both servers. I know this didn't happen without the new catalina-cluster.jar. If I shut down 1 server (doesn't matter which) everything returns to normal. But when both are running both servers are at 100% CPU. I am trying to profile it now, but I figured if someone has already experienced this they could save me some time. Oh, and there isn't anything relevant in my logs. It's not throwing millions of errors or something. -Steve Nelson
Re: Tomcat5 Clustering problem .
you probably didn't uncomment the ReplicationValve in server.xml I will remove this as many people make this mistake, and the valve will be automatically added when the cluster starts Filip - Original Message - From: Eric Chow [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Tuesday, November 11, 2003 2:11 AM Subject: Tomcat5 Clustering problem . Hello, I followed the Tomcat5 clustering document in jakarta site. But it seems not work. The following is the configuration in server.xml : Tomcat1: Cluster className=org.apache.catalina.cluster.tcp.SimpleTcpCluster name=FilipsCluster1 debug=10 serviceclass=org.apache.catalina.cluster.mcast.McastService mcastAddr=228.0.0.4 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000 tcpThreadCount=2 tcpListenAddress=auto tcpListenPort=4001 tcpSelectorTimeout=100 printToScreen=false expireSessionsOnShutdown=false useDirtyFlag=true replicationMode=synchronous / Tomcat2: Cluster className=org.apache.catalina.cluster.tcp.SimpleTcpCluster name=FilipsCluster2 debug=10 serviceclass=org.apache.catalina.cluster.mcast.McastService mcastAddr=228.0.0.4 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000 tcpThreadCount=2 tcpListenAddress=auto tcpListenPort=4002 tcpSelectorTimeout=100 printToScreen=false expireSessionsOnShutdown=false useDirtyFlag=true replicationMode=synchronous / As I run two Tomcat5 instances in one machine, I changed the tcpListenPort (4001, 4002). And the name is also different. I used Apache JK as the Load Balance. The Load Balance is no problem, when the Tomcat1 is crashed, it can switch to the Tomcat2, but failed to hold the session ? Anything I missed or how can solve it if I want to make Tomcat clustering Platform: == JDK1.4.2 Win98 Tomcat5.0.9 == Please help. Best regards, Eric == If you know what you are doing, it is not called RESEARCH! == - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat5 Clustering problem .
Hello, I followed the Tomcat5 clustering document in jakarta site. But it seems not work. The following is the configuration in server.xml : Tomcat1: Cluster className=org.apache.catalina.cluster.tcp.SimpleTcpCluster name=FilipsCluster1 debug=10 serviceclass=org.apache.catalina.cluster.mcast.McastService mcastAddr=228.0.0.4 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000 tcpThreadCount=2 tcpListenAddress=auto tcpListenPort=4001 tcpSelectorTimeout=100 printToScreen=false expireSessionsOnShutdown=false useDirtyFlag=true replicationMode=synchronous / Tomcat2: Cluster className=org.apache.catalina.cluster.tcp.SimpleTcpCluster name=FilipsCluster2 debug=10 serviceclass=org.apache.catalina.cluster.mcast.McastService mcastAddr=228.0.0.4 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000 tcpThreadCount=2 tcpListenAddress=auto tcpListenPort=4002 tcpSelectorTimeout=100 printToScreen=false expireSessionsOnShutdown=false useDirtyFlag=true replicationMode=synchronous / As I run two Tomcat5 instances in one machine, I changed the tcpListenPort (4001, 4002). And the name is also different. I used Apache JK as the Load Balance. The Load Balance is no problem, when the Tomcat1 is crashed, it can switch to the Tomcat2, but failed to hold the session ? Anything I missed or how can solve it if I want to make Tomcat clustering Platform: == JDK1.4.2 Win98 Tomcat5.0.9 == Please help. Best regards, Eric == If you know what you are doing, it is not called RESEARCH! == - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
