Need help deploying web-service to EC2 with Tomcat7
Hi Everyone, I have a web-service that I've developed using Tomcat7/MySQL5 using NetBeans 7. In the IDE it all works fine. For testing however, I need to get it onto an EC2 instance so users other than me can access it. I have created an EC2 micro-instance, installed Tomcat 7 and MySQL 5 (the same versions as on my dev env) and deployed my .war file. The deployment succeeds at least partially because I can get to the simple static Hello World index jsp page and because it tries to access my database user (which I then created). I don't see any errors in the log and I've gone back-and-forth trying all sorts of desperate things to try and get this working. I'm sure there must be a simple solution but I just don't know what it is. Any ideas? Thanks in advance, Terry
Re: Mod_jk working for failover
Thank you Rainer, Now Apache is working with disable mode. Maybe later it changed again. :) 2011/6/12 Rainer Jung rainer.j...@kippdata.de On 12.06.2011 09:30, Manuel Fernández Panzuela wrote: Is possible to combine both attributes distance - activation ? Distance looks like a very interesting attribute. Yes, of course you can combine. As long as you don't cnfuse yourself because it gets too complicated. Distace (e.g. 0 and 1) will lead to normally everything being sent to the close node, but when you switch its activation from active to disabled, new sessions will be created on the node with higher distance. Switching to stopped will result in every request being handled by the node with higher distance. Regards, Rainer 2011/6/11 Rainer Jung rainer.j...@kippdata.de On 08.06.2011 12:12, Felix Schumacher wrote: Am Mittwoch, den 08.06.2011, 09:47 +0200 schrieb Manuel Fernández Panzuela: Yes Felix, you are right i am working with 2 instances. I want primary node receives all requests and on failure send requests to the secondary node. Is it possible with your recomendation ? You may also want to read http://tomcat.apache.org/connectors-doc/generic_howto/loadbalancers.html if http://tomcat.apache.org/connectors-doc/reference/workers.html was not helpful. worker.43m2g1.activation=d degraded ??? is a condition ? then all requests will be redirected to 43m2g1 disabled The attribute distance provides an alternative approach. Regards, Rainer - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to configure USE_SECURE_RANDOM_FOR_UUID?
Honestly, I was simply curious why the cryptographically secure generation of random unique ids (through java.security.SecureRandom API) is disabled by default. And It was unclear to me if it is at all possible to change the default behavior. Thanks, Franckie14 2011/6/14 Mark Thomas ma...@apache.org On 13/06/2011 22:43, Christopher Schultz wrote: Frank, On 6/13/2011 11:46 AM, franckie frank wrote: I ve noticed that in Tomcat 7.0.14 s org.apache.catalina.tribes.io.ChannelData there is public static field 'public static volatile boolean USE_SECURE_RANDOM_FOR_UUID'. and it seems to be used only once in the same class. By default its value is false. Do you know if there is a way to change/configure its value? How about: import org.apache.catalina.tribes.io.ChannelData; ... ChannelData.USE_SECURE_RANDOM_FOR_UUID = true; But that begs the questions, why would you want to? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to configure USE_SECURE_RANDOM_FOR_UUID?
ranckie frank francki...@gmail.com wrote: Honestly, I was simply curious why the cryptographically secure generation of random unique ids (through java.security.SecureRandom API) is disabled by default. Because it is more expensive. I can't think of a reason why you would need SecureRandom there but left some code so it would be easy to change at a later point if someone came up with a reason. And It was unclear to me if it is at all possible to change the default behavior. Not with config, only as previously descibed. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: error in clustering: NullPointerException at java.io.ObjectOutputStream$BlockDataOutputStream.getUTFLength
Hi, I see the issue if solved in an upcoming version of Tomcat. Thank you very much for that. But can I expect an upcoming version of Tomcat 6.0 in the not too distant future? At the tomcat-dev list I only see recent votings for 7.0.x. Who normally is the initiator of the 6.x release cycle? Ronald. Op vrijdag, 10 juni 2011 13:03 schreef Ronald Klop ronald-mailingl...@base.nl: Hi, I'm running a 4 node cluster and seeing the same exception as described in this issue. https://issues.apache.org/bugzilla/show_bug.cgi?id=51306 What can I do to workaround it or what can I information can I provide to help? I'm running 6.0.32 with a securitymanager on Debian 5. Java version 1.6.0_22 from debian sun-java pkgs. My clusterconfig is this: Engine name=Catalina defaultHost=.. Realm className=org.apache.catalina.realm.UserDatabaseRealm resourceName=UserDatabase / Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster Channel className=org.apache.catalina.tribes.group.GroupChannel Membership className=org.apache.catalina.tribes.membership.McastService port=47727 / /Channel /Cluster !-- Zorg dat de appBase regel direct na de 'Host name' regel staat -- Host name=.. appBase=/data/webapps/xxx-xxx/deployed unpackWARs=true autoDeploy=false xmlValidation=false xmlNamespaceAware=true /Host /Engine The exception from my catalina.out. Jun 10, 2011 11:08:52 AM org.apache.catalina.ha.session.DeltaManager messageReceived SEVERE: Manager [crm.realworks.nl#]: Unable to receive message through TCP channel java.lang.NullPointerException at java.io.ObjectOutputStream$BlockDataOutputStream.getUTFLength(ObjectOutputStream.java:2106) at java.io.ObjectOutputStream$BlockDataOutputStream.writeUTF(ObjectOutputStream.java:1977) at java.io.ObjectOutputStream.writeUTF(ObjectOutputStream.java:849) at org.apache.catalina.ha.session.DeltaRequest.writeExternal(DeltaRequest.java:267) at org.apache.catalina.ha.session.DeltaRequest.serialize(DeltaRequest.java:287) at org.apache.catalina.ha.session.DeltaManager.serializeDeltaRequest(DeltaManager.java:716) at org.apache.catalina.ha.session.DeltaManager.requestCompleted(DeltaManager.java:1224) at org.apache.catalina.ha.session.DeltaSession.expire(DeltaSession.java:403) at org.apache.catalina.ha.session.DeltaManager.handleSESSION_EXPIRED(DeltaManager.java:1546) at org.apache.catalina.ha.session.DeltaManager.messageReceived(DeltaManager.java:1452) at org.apache.catalina.ha.session.DeltaManager.messageDataReceived(DeltaManager.java:1173) at org.apache.catalina.ha.session.ClusterSessionListener.messageReceived(ClusterSessionListener.java:92) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:901) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:882) at org.apache.catalina.tribes.group.GroupChannel.messageReceived(GroupChannel.java:269) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:110) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:241) at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:225) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:188) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:91) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Ronald.
Re: Tomcat 6.0.18 clustering problem
Thanks Mark. :) My comments inlined... Over and above, the underlined network pipeline system also seems to be fine. Still dont understand what is wrong. After enabling the logs to FINE level, i could see following... Jun 14, 2011 10:26:38 AM org.apache.catalina.tribes.transport.ReceiverBase getBind FINE: Starting replication listener on address:xx.xx.xx.xxx Jun 14, 2011 10:26:38 AM org.apache.catalina.tribes.transport.ReceiverBase bind INFO: Receiver Server Socket bound to:/xx.xx.xx.xxx:4000 Jun 14, 2011 10:26:38 AM org.apache.catalina.tribes.membership.McastServiceImpl setupSocket INFO: Setting cluster mcast soTimeout to 500 Jun 14, 2011 10:26:38 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Sleeping for 1000 milliseconds to establish cluster membership, start level:4 Jun 14, 2011 10:26:39 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Done sleeping, membership established, start level:4 Jun 14, 2011 10:26:39 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Sleeping for 1000 milliseconds to establish cluster membership, start level:8 Jun 14, 2011 10:26:40 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Done sleeping, membership established, start level:8 Since, the clusters do not recognize anything, no communication in the logs! :( On Tue, Jun 14, 2011 at 5:07 AM, Mark Eggers its_toas...@yahoo.com wrote: - Original Message - From: Nilesh - MiKu niles...@directi.com To: users@tomcat.apache.org Cc: Sent: Monday, June 13, 2011 8:36 AM Subject: Tomcat 6.0.18 clustering problem Hi people... Background : I have two nodes (say, n1 and n2) running 3 instances of tomcat (say t1, t2, t3), with n1 running t1, t3 and n2 running t2. (All running same application.). I want to make clustering for n1-t1 and n2-t2. Clustering cofig for n1-t1 is Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster channelSendOptions=8 Manager className=org.apache.catalina.ha.session.DeltaManager expireSessionsOnShutdown=false notifyListenersOnReplication=true/ Channel className=org.apache.catalina.tribes.group.GroupChannel Membership className=org.apache.catalina.tribes.membership.McastService address=228.0.0.4 port=45564 frequency=500 dropTime=3000/ Receiver className=org.apache.catalina.tribes.transport.nio.NioReceiver address=auto port=4000 autoBind=100 selectorTimeout=5000 maxThreads=6/ Sender className=org.apache.catalina.tribes.transport.ReplicationTransmitter Transport className=org.apache.catalina.tribes.transport.nio.PooledParallelSender/ /Sender Interceptor className=org.apache.catalina.tribes.group.interceptors.TcpPingInterceptor/ Interceptor className=org.apache.catalina.tribes.group.interceptors.TcpFailureDetector/ Interceptor className=org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor/ /Channel Valve className=org.apache.catalina.ha.tcp.ReplicationValve filter=.*\.ico;.*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.css;.*\.txt;/ ClusterListener className=org.apache.catalina.ha.session.ClusterSessionListener/ /Cluster Clustering cofig for n2-t2 is same as above n1-t3 has element Cluster commented and is not participating in clustering at all. Its being used for some other special purpose. Here is what i get when i start the tomcat instance. Jun 11, 2011 9:26:18 AM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/lib/jvm/jav a-1.6.0-sun-1.6.0.13/jre/lib/amd64/server:/usr/lib/jvm/java-1.6.0-sun-1.6.0.13/jre/lib/amd64:/usr/lib/jvm/java-1.6.0-sun-1.6.0.13/jre/../lib/amd64:/usr/java/packages /lib/amd64:/lib:/usr/lib Jun 11, 2011 9:26:18 AM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 Jun 11, 2011 9:26:18 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 446 ms Jun 11, 2011 9:26:18 AM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Jun 11, 2011 9:26:18 AM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.18 Jun 11, 2011 9:26:18 AM org.apache.catalina.ha.tcp.SimpleTcpCluster start INFO: Cluster is about to start Jun 11, 2011 9:26:18 AM org.apache.catalina.tribes.transport.ReceiverBase bind INFO: Receiver Server Socket bound to:/70.87.28.134:4000 Jun 11, 2011 9:26:18 AM org.apache.catalina.tribes.membership.McastServiceImpl setupSocket INFO: Setting cluster mcast soTimeout to 500 Jun 11, 2011 9:26:18 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Sleeping for 1000 milliseconds to establish cluster membership, start level:4 Jun
Re: Tomcat 7.0.11 embedded does not load context.xml [SEC=UNCLASSIFIED]
On 14/06/2011 05:14, Fraser, James wrote: UNCLASSIFIED Hi, I am trying to embed Tomcat 7.0.11 into my standard web application. This web application defines some Resource elements in META-INF/context.xml - yet, Tomcat is not loading this file. addWebapp should return a Context object. You'll need to call setConfigFile() on that Context object. Mark tomcat = new Tomcat(); tomcat.setBaseDir(.); tomcat.setPort(8084); tomcat.addWebapp(/, System.getProperty(user.dir) + /build/web); tomcat.setHostname(localhost); tomcat.enableNaming(); tomcat.start(); Causes the following error: javax.naming.NamingException: Cannot create resource instance at org.apache.naming.factory.ResourceEnvFactory.getObjectInstance(ResourceE nvFactory.java:117) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) at org.apache.naming.NamingContext.lookup(NamingContext.java:826) at org.apache.naming.NamingContext.lookup(NamingContext.java:145) at org.apache.naming.NamingContext.lookup(NamingContext.java:814) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) at dsto.adiib.ws.harmoniser.AdiibHarmoniser.init(AdiibHarmoniser.java:113 ) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorA ccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingCons tructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at java.lang.Class.newInstance0(Class.java:355) at java.lang.Class.newInstance(Class.java:308) at com.sun.xml.ws.api.server.InstanceResolver.createNewInstance(InstanceRes olver.java:215) at com.sun.xml.ws.api.server.InstanceResolver.createDefault(InstanceResolve r.java:180) at com.sun.xml.ws.server.EndpointFactory.createEndpoint(EndpointFactory.jav a:123) at com.sun.xml.ws.api.server.WSEndpoint.create(WSEndpoint.java:505) at com.sun.xml.ws.transport.http.DeploymentDescriptorParser.parseAdapters(D eploymentDescriptorParser.java:253) at com.sun.xml.ws.transport.http.DeploymentDescriptorParser.parse(Deploymen tDescriptorParser.java:147) at com.sun.xml.ws.transport.http.servlet.WSServletContextListener.contextIn itialized(WSServletContextListener.java:124) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.j ava:4681) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:518 4) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:517 9) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecuto r.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.ja va:908) at java.lang.Thread.run(Thread.java:662) Line 113 of AdiibHarmoniser is like so: HarmoniserImplConfigBean harmoniserImplConfigBean = (HarmoniserImplConfigBean)envCtx.lookup(beanName); This essentially loads some external beans for me. My context.xml looks like so: ?xml version=1.0 encoding=UTF-8? Context antiJARLocking=true path=/AdiibHarmoniser Resource auth=Container csdTypeComparatorValue=VIDEO csdViewDataModel=NSIL_VIDEO_VIEW dibTextPath=//video factory=org.apache.naming.factory.BeanFactory harmonise=true harmoniserClassName=dsto.adiib.ws.harmoniser.FmvHarmoniser name=bean/FmvFactory subscriptionId=adiibFmvHarmoniser type=dsto.adiib.ws.harmoniser.HarmoniserImplConfigBean/ Resource auth=Container csdTypeComparatorValue=IMAGERY csdViewDataModel=NSIL_IMAGERY_VIEW dibTextPath=//nitf factory=org.apache.naming.factory.BeanFactory harmonise=true harmoniserClassName=dsto.adiib.ws.harmoniser.NitfHarmoniser name=bean/NitfFactory subscriptionId=adiibNitfHarmoniser type=dsto.adiib.ws.harmoniser.HarmoniserImplConfigBean/ /Context Using normal Tomcat (non embedded) everything works fine. I found a post similar to my problem here: http://stackoverflow.com/questions/5238451/jndi-jdbc-data-source-in-embe dded-tomcat-7, yet this caused a followon exception. java.lang.NoSuchMethodError: org.apache.catalina.Context.setConfigFile(Ljava/lang/String;)V Any ideas? Kind Regards, James IMPORTANT: This email remains the property of the Department of Defence and is subject to the jurisdiction of section 70 of the Crimes Act 1914. If you have received this email in error, you are requested to contact the sender and delete the email. - To unsubscribe,
mod_jk problem
Hello All, I am using apache and tomcat with mod_jk. apache version : 2.2.19 tomcat version : 6.0 mod_jk version : 1.2.30 My web runs through servlet. http://domainname:8080/contact.shtml - is working http://domainname/contact.shtml - is not working mod_jk log : [debug] map_uri_to_worker_ext::jk_uri_worker_map.c (1036): Attempting to map URI '/contact.shtml' from 4 maps [trace] find_match::jk_uri_worker_map.c (839): enter [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/servlets/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/servlet/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/*.jsp=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (863): Found a wildchar match '/*=ajp13' [trace] find_match::jk_uri_worker_map.c (866): exit [trace] map_uri_to_worker_ext::jk_uri_worker_map.c (1065): exit [trace] map_uri_to_worker_ext::jk_uri_worker_map.c (951): enter [debug] map_uri_to_worker_ext::jk_uri_worker_map.c (1036): Attempting to map URI '/404.shtml' from 4 maps [trace] find_match::jk_uri_worker_map.c (839): enter [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/servlets/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/servlet/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/*.jsp=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (850): Attempting to map context URI '/*=ajp13' source 'JkMount' [debug] find_match::jk_uri_worker_map.c (863): Found a wildchar match '/*=ajp13' [trace] find_match::jk_uri_worker_map.c (866): exit [trace] map_uri_to_worker_ext::jk_uri_worker_map.c (1065): exit Why jk connector not converting to servlet? any idea?
Re: mod_jk problem
On 14 June 2011 12:07, Orgil Tulga orgio...@yahoo.com wrote: Hello All, I am using apache and tomcat with mod_jk. apache version : 2.2.19 tomcat version : 6.0 mod_jk version : 1.2.30 My web runs through servlet. http://domainname:8080/contact.shtml - is working http://domainname/contact.shtml - is not working Why jk connector not converting to servlet? any idea? I imagine people will ask to see your jk config. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: mod_jk problem
My jk connector config is below. Below is jk.conf: JkWorkersFile /usr/local/jakarta/tomcat/conf/workers.properties JkLogFile /usr/local/apache/logs/mod_jk.log JkLogLevel trace JkLogStampFormat [%a %b %d %H:%M:%S %Y] JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories JkRequestLogFormat %w %V %T = Below is jkmount.conf : = IfModule mod_jk.c JkMount /* ajp13 JkMount /*.jsp ajp13 JkMount /servlet/* ajp13 JkMount /servlets/* ajp13 /IfModule = I inserted below lines in httpd.conf LoadModule jk_module modules/mod_jk.so Include /usr/local/apache/conf/jk.conf Include /usr/local/apache/conf/jkmount.conf --- On Tue, 6/14/11, Calum cal...@gmail.com wrote: From: Calum cal...@gmail.com Subject: Re: mod_jk problem To: Tomcat Users List users@tomcat.apache.org Date: Tuesday, June 14, 2011, 4:20 AM On 14 June 2011 12:07, Orgil Tulga orgio...@yahoo.com wrote: Hello All, I am using apache and tomcat with mod_jk. apache version : 2.2.19 tomcat version : 6.0 mod_jk version : 1.2.30 My web runs through servlet. http://domainname:8080/contact.shtml - is working http://domainname/contact.shtml - is not working Why jk connector not converting to servlet? any idea? I imagine people will ask to see your jk config. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: mod_jk problem
On 14 June 2011 12:28, Orgil Tulga orgio...@yahoo.com wrote: My jk connector config is below. Below is jk.conf: JkWorkersFile /usr/local/jakarta/tomcat/conf/workers.properties Can we see this? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: mod_jk problem
No. I am testing on local domain. --- On Tue, 6/14/11, Calum cal...@gmail.com wrote: From: Calum cal...@gmail.com Subject: Re: mod_jk problem To: Tomcat Users List users@tomcat.apache.org Date: Tuesday, June 14, 2011, 4:35 AM On 14 June 2011 12:28, Orgil Tulga orgio...@yahoo.com wrote: My jk connector config is below. Below is jk.conf: JkWorkersFile /usr/local/jakarta/tomcat/conf/workers.properties Can we see this? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: mod_jk problem
On 14 June 2011 12:49, Orgil Tulga orgio...@yahoo.com wrote: No. I am testing on local domain. I don't understand this. The ajp13 bit in your jkmount.conf needs to refer to a worker in workers.properties. We would need to see it to understand what's happening. This might help you a little? http://tomcat.apache.org/connectors-doc/reference/workers.html - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Need help deploying web-service to EC2 with Tomcat7
On 14/06/2011 08:03, Lisa and Terence Davis wrote: Hi Everyone, I have a web-service that I've developed using Tomcat7/MySQL5 using NetBeans 7. In the IDE it all works fine. For testing however, I need to get it onto an EC2 instance so users other than me can access it. I have created an EC2 micro-instance, installed Tomcat 7 and MySQL 5 (the same versions as on my dev env) and deployed my .war file. The deployment succeeds at least partially because I can get to the simple static Hello World index jsp page and because it tries to access my database user (which I then created). I don't see any errors in the log and I've gone back-and-forth trying all sorts of desperate things to try and get this working. I'm sure there must be a simple solution but I just don't know what it is. What do the logs say? p signature.asc Description: OpenPGP digital signature
Re: Need help deploying web-service to EC2 with Tomcat7
On Tue, Jun 14, 2011 at 12:03 AM, Lisa and Terence Davis lisn...@verizon.net wrote: OT: Dear Lisa and Terence -- It's 2011, and while togetherness is wonderful, it's hard to take someone seriously who can't figure out how to get at least their own free gmail account :-) I have a web-service that I've developed using Tomcat7/MySQL5 using NetBeans 7. In the IDE it all works fine. Great. How's it work when you run it locally *without* the IDE? -- Hassan Schroeder hassan.schroe...@gmail.com http://about.me/hassanschroeder twitter: @hassan - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
On 13/06/2011 22:53, Christopher Schultz wrote: Gili, On 6/13/2011 1:07 PM, cowwoc wrote: I posted a RFE at https://issues.apache.org/bugzilla/show_bug.cgi?id=51366 asking for the ability to seamlessly deploy webapps into separate JVMs. So you want Tomcat to have an option to run as a supervisor in one JVM and deploy webapps to separate JVMs? You can, right now, start blank Tomcat instances and deploy apps to them - managing the instance using JMX. What you can't do, is seamlessly transfer request processing from one running JVM to another - using Tomcat instances alone - because you can't exactly determine when one instance releases a port, enabling another to bind to it. This is why I referred to parallel deployment, which does permit seamless transfer to a new version of the app. Tomcat 7.0's parallel deployment sounds nice but it still doesn't solve the JNI and memory leak problems that haunt a single JVM architecture. Tomcat has some memory leak prevention capability (since 6.0.24) but JNI memory issues it can't prevent. What problems are you seeing? Parallel deployment is at once orthogonal to and the opposite of what you are requesting. Yeah, my fault, I misread what he was asking. See above. Please read the proposal and let me know what you think. What single management interface are you describing in your enhancement comments? The Tomcat manager webapp? It's trivial to run a manager in each JVM and use that for deployment. If you know that your webapp needs to do things such as register a shared library on startup, you can do one of two things: 1. Always bounce Tomcat directly instead of re-loading the webapp 2. Fix the webapp so it doesn't bomb on startup when the library is already loaded Tomcat provides the manager webapp and ant tasks to access it, plus a toolbox of scripts to start/stop/etc. Tomcat. Your needs seem to be fairly specific... why not just roll your own solution? Bouncing a JVM requires admin access to the local operating system, which you probably wouldn't want to give to a Tomcat application. Assuming I've understood correctly this time. p - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org signature.asc Description: OpenPGP digital signature
How to configure logging in embedded Tomcat?
Hi all, I am running Tomcat embedded and just can't figure out how to programmatically configure the logging of the engine itself. Ideally I would redirect logging to a custom implementation, but changing the log level (to off) would already help. The LogFactory doesn't seem to offer such functionality (?) and manipulating the underlying java.util.logging.Logger didn't help either. Any insights? TIA Rüdiger - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to configure logging in embedded Tomcat?
On 14/06/2011 16:24, Rüdiger Herrmann wrote: Hi all, I am running Tomcat embedded and just can't figure out how to programmatically configure the logging of the engine itself. Ideally I would redirect logging to a custom implementation, but changing the log level (to off) would already help. The LogFactory doesn't seem to offer such functionality (?) and manipulating the underlying java.util.logging.Logger didn't help either. Any insights? Without you telling us the Tomcat version you are using, insight is unlikely. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to configure logging in embedded Tomcat?
ups, sorry. I am using version 7. On Tue, Jun 14, 2011 at 18:03, Mark Thomas ma...@apache.org wrote: On 14/06/2011 16:24, Rüdiger Herrmann wrote: Hi all, I am running Tomcat embedded and just can't figure out how to programmatically configure the logging of the engine itself. Ideally I would redirect logging to a custom implementation, but changing the log level (to off) would already help. The LogFactory doesn't seem to offer such functionality (?) and manipulating the underlying java.util.logging.Logger didn't help either. Any insights? Without you telling us the Tomcat version you are using, insight is unlikely. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- -- EclipseSource http://eclipsesource.com Tel: 0721 - 66 47 33 - 0 Fax: 0721 - 66 47 33 29 Innoopract Informationssysteme GmbH Stephanienstrasse 20, 76133 Karlsruhe, Germany General Manager: Jochen Krause Registered Office: Karlsruhe, Commercial Register Mannheim HRB 107883 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gili, On 6/13/2011 9:26 PM, cowwoc wrote: Assuming we simply use one webapp per Tomcat instance I'm still looking for two changes: * Restart the entire JVM on webapp redeploy (to avoid JNI and ClassLoader problems) Why bother redeploying, then? Instead of doing ant redeploy, just do ant bounce or something similar. * Faster webapp redeploys if the entire JVM is restarted. I'm aiming for one second but currently we're at ten seconds. Tomcat simply takes a certain amount of time to start. The fewer things you have configured at startup the better, but Tomcat starts up pretty quickly. Generally speaking, it's your webapp that is going to take a long time to start up if you have lots of things happening in ServletContextListeners, load-on-startup Servlets, etc. If you deploy no webapps, how long does it take Tomcat to start up? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk33o00ACgkQ9CaO5/Lv0PBDmACgi0uBTXZ8RHtFjggelFNWlk48 iZsAnjEsq3bkhYzPZXIuDqcsw+649L9p =FZoe -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
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Hash: SHA1
Pid,
On 6/14/2011 9:34 AM, Pid wrote:
On 13/06/2011 22:53, Christopher Schultz wrote:
What single management interface are you describing in your
enhancement comments? The Tomcat manager webapp? It's trivial to run a
manager in each JVM and use that for deployment.
If you know that your webapp needs to do things such as register a
shared library on startup, you can do one of two things:
1. Always bounce Tomcat directly instead of re-loading the webapp
2. Fix the webapp so it doesn't bomb on startup when the library
is already loaded
Tomcat provides the manager webapp and ant tasks to access it, plus a
toolbox of scripts to start/stop/etc. Tomcat. Your needs seem to be
fairly specific... why not just roll your own solution?
Bouncing a JVM requires admin access to the local operating system,
which you probably wouldn't want to give to a Tomcat application.
Not necessarily... we run Tomcat unprivileged so bouncing the JVM just
requires normal user access. If you need port 80, use jsvc or one of
the other similar options.
Now, bouncing the JVM from withing the JVM... that requires some creativity.
It sounds like the OP could just wrap the Tomcat launcher in a script
that looks roughly like this:
#/bin/sh
while [ 1 ]
do
${CATALINA_HOME}/bin/startup.sh run $CATALINA_OUT 21
done
This would start a Tomcat and wait for it to finish, then restart when
the original JVM came down. I suspect using JMX or whatever, one can
request a Tomcat shutdown which will ultimately terminate the JVM
(unless some foolish person launched a non-daemon thread at some point).
The script will re-start Tomcat.
This just doesn't seem like a difficult thing to implement oneself, nor
does it seem like something that is widely applicable.
- -chris
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Re: One process per webapp
Christopher Schultz-2 wrote: Why bother redeploying, then? Instead of doing ant redeploy, just do ant bounce or something similar. I am running inside Netbeans (remember the focus here is on improving development productivity, less so on improving production deployments). Modifying what they run under the hood is probably not going to be trivial. * Faster webapp redeploys if the entire JVM is restarted. I'm aiming for one second but currently we're at ten seconds. Christopher Schultz-2 wrote: Tomcat simply takes a certain amount of time to start. The fewer things you have configured at startup the better, but Tomcat starts up pretty quickly. Generally speaking, it's your webapp that is going to take a long time to start up if you have lots of things happening in ServletContextListeners, load-on-startup Servlets, etc. If you deploy no webapps, how long does it take Tomcat to start up? It takes about 10 seconds to shut down and start up a new instance. Starting up a new instance is fairly quick. Shutting down takes a while. When restarting a webapp, we don't have to wait for the old instance to finish shutting down (which is slow) before transferring access to another Tomcat instance. The new instance can simply bind to a different port and the proxy running at port 80 can switch which port it is redirecting requests to. The only snag I can think of is that the old instance might keep files locked on disk (but I think this is no longer the case with Tomcat 7.x) Gili -- View this message in context: http://old.nabble.com/One-process-per-webapp-tp31836121p31845924.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
Pid * wrote: You can, right now, start blank Tomcat instances and deploy apps to them - managing the instance using JMX. Granted I can do a lot of this myself, but it's a lot of work for every user to reinvent this wheel. This kind of feature needs to be improved in the official release. Pid * wrote: What you can't do, is seamlessly transfer request processing from one running JVM to another - using Tomcat instances alone - because you can't exactly determine when one instance releases a port, enabling another to bind to it. You don't need to wait. You have a proxy webapp running on port 80 that redirects traffic to whatever port each webapp runs on. When an admin restarts a webapp you simply redirect traffic to the port of the new Tomcat instance (which may differ from the port of the instance you are shutting down). That way you don't need to wait for the old instance to shut down (which is slow) before launching the new one. Pid * wrote: Tomcat has some memory leak prevention capability (since 6.0.24) but JNI memory issues it can't prevent. What problems are you seeing? The new leak prevention is great, but last time I checked it couldn't solve 100% of offending libraries/webapps. Running webapps in their own JVM would be a 100% fix without having to resort to any magic/hacks. Gili -- View this message in context: http://old.nabble.com/One-process-per-webapp-tp31836121p31846007.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
1. Always bounce Tomcat directly instead of re-loading the webapp
This is too slow (10-15 seconds) in its current form. If you use the
mechanism I'm proposing restart time is instant (you have a blank Tomcat
instance waiting to pick up a new webapp).
2. Fix the webapp so it doesn't bomb on startup when the library
is already loaded
As far as I know what you are proposing is impossible. Here is what I've
seen:
* A webapp must invoke System.loadLibrary() to use JNI.
* If a library is loaded by one ClassLoader and another ClassLoader invokes
System.loadLibrary() the JVM will throw: java.lang.UnsatisfiedLinkError:
Native Library x already loaded in another classloader.
* Tomcat loads each webapp into its own ClassLoader.
* When reloading a webapp, there is no guarantee that the old ClassLoader
will get garbage-collected (thereby ensuring that the old library is
unloaded) before the new webapp is launched. When I reload such webapps, I
get UnsatisfiedLinkError virtually 100% of the time.
* There is nothing a webapp can do to prevent this problem. Either each
webapp needs to run in its own JVM or Tomcat needs to guarantee that the old
ClassLoader is GCed before loading the new webapp instance.
Tomcat provides the manager webapp and ant tasks to access it, plus a
toolbox of scripts to start/stop/etc. Tomcat. Your needs seem to be
fairly specific... why not just roll your own solution?
Because then every user would have to roll their own solution. Right now it
is impossible to reload webapps that use JNI and it is extremely slow to
reload the entire JVM. Fixing this in the official release would benefit
anyone wishing to use JNI (or libraries that use JNI) from within Tomcat.
Nowadays with the rise of RESTful interfaces, it makes a lot more sense to
wrap a RESTful interface around libraries that interface with native code.
Christopher Schultz-2 wrote:
It sounds like the OP could just wrap the Tomcat launcher in a script
that looks roughly like this:
#/bin/sh
while [ 1 ]
do
${CATALINA_HOME}/bin/startup.sh run $CATALINA_OUT 21
done
This would start a Tomcat and wait for it to finish, then restart when
the original JVM came down. I suspect using JMX or whatever, one can
request a Tomcat shutdown which will ultimately terminate the JVM
(unless some foolish person launched a non-daemon thread at some point).
The script will re-start Tomcat.
This just doesn't seem like a difficult thing to implement oneself, nor
does it seem like something that is widely applicable.
Chris, I'm asking for a lot more sophistication than simply restarting the
JVM. I'm talking about sticking a proxy (on port 80) that acts a front-man.
Then each webapp run in its own JVM in some custom port. The proxy redirects
traffic to the custom ports. Reloading webapps would do the following:
* Grab a blank (loaded without any webapps) Tomcat instance from some pool,
ask it to load the new webapp instance.
* The new instance runs in a different port than the existing instance
* We ask the proxy to forward traffic to the new port instead of the old one
* We ask the old instance to shut down
* Note that traffic moves across instances instantly (without waiting for
the old instance to shut down)
I wouldn't want to try implementing this in terms of simple script files.
It's a lot more involved.
Gili
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Drop message SESSION-EXPIRED inside GET_ALL_SESSIONS
I am experiencing an issue with my cluster I have been unable to figure out. My cluster contains 4 servers each with 4 instances of Tomcat segregated by mod_jk directives. Server1 Directives: / - tomcat.server1 /app1 - tomcat-app1.server1 /app2 - tomcat-app2.server1 /app3 - tomcat-app3.server1 Server2 Directives: / - tomcat.server2 /app1 - tomcat-app1.server2 /app2 - tomcat-app2.server2 /app3 - tomcat-app3.server2 ... and so on All Tomcat segmentations are clustered and share session data so our users can move between them seamlessly on our application. Here's the scenario I'm experiencing: - User1 logs on to server1 and navigates to tomcat-app1.server1 - tomcat-app1.server1 becomes unresponsive and is removed from the cluster - User1 is moved to tomcat-app1.server2 successfully and experiences no issues. - tomcat-app1.server1 becomes responsive and is added back to the cluster. - tomcat-app1.server1 requests session states and throws the following error in catalina.out: WARNING: Manager [localhost#]: Drop message SESSION-EXPIRED inside GET_ALL_SESSIONS sync phase start date 6/14/11 1:59 PM message date 12/31/69 6:00 PM INFO: Lost Session [A56F0A74DCF2FBA7F179100C3D84A485.app1.server2] at path [] - Load balancer moves User1 back to tomcat-app1.server1 - User1 gets logged out (lost session)
Re: One process per webapp
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gili, On 6/14/2011 3:28 PM, cowwoc wrote: Christopher Schultz-2 wrote: Why bother redeploying, then? Instead of doing ant redeploy, just do ant bounce or something similar. I am running inside Netbeans (remember the focus here is on improving development productivity, less so on improving production deployments). Modifying what they run under the hood is probably not going to be trivial. Can't Netbeans bounce the Tomcat JVM for you? If this is just in development, why not just wrap System.loadLibrary() in a try/catch block and ignore the exception you get when re-loading the native library? This just seems like it would be a lot of work for not much gain. If you deploy no webapps, how long does it take Tomcat to start up? It takes about 10 seconds to shut down and start up a new instance. With no webapps deployed at all? Wow, something is not right. Are you sure you have enough memory installed on your dev instance? Starting up a new instance is fairly quick. Shutting down takes a while. That seems strange... do you have a complicated shutdown procedure for your webapp? Tomcat shuts down on my end in very short order when no webapps need to be undeployed. When restarting a webapp, we don't have to wait for the old instance to finish shutting down (which is slow) before transferring access to another Tomcat instance. If they're going to be using the same port, you do. The new instance can simply bind to a different port and the proxy running at port 80 can switch which port it is redirecting requests to. So... you want Tomcat to also notify a 3rd-party that it's being shut down so that a proxy can re-configure itself? The only snag I can think of is that the old instance might keep files locked on disk (but I think this is no longer the case with Tomcat 7.x) I don't believe Tomcat locks anything specific. Under certain situations, the JVM and the OS conspire to lock certain resources (usually .jar files) and that can be a problem. If you're starting a new instance in parallel, wouldn't you want to do it from a separate directory anyway? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk330RgACgkQ9CaO5/Lv0PCH6ACfTAZ1m0wSocjfvnfLeYHegzbd BJAAoLAFzIa5fQ/V/k3GYFPtUw6qKjm2 =/62c -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gili, On 6/14/2011 3:54 PM, cowwoc wrote: 1. Always bounce Tomcat directly instead of re-loading the webapp This is too slow (10-15 seconds) in its current form. If you use the mechanism I'm proposing restart time is instant (you have a blank Tomcat instance waiting to pick up a new webapp). So, now you want Tomcat to launch multiple copies of itself as hot standbys for /potential future webapp deployments/? We'll never do this. 2. Fix the webapp so it doesn't bomb on startup when the library is already loaded As far as I know what you are proposing is impossible. Certainly not. Here is what I've seen: * A webapp must invoke System.loadLibrary() to use JNI. Must it? You can load a native library at a higher-level instead of in the webapp itself and avoid all of this. * If a library is loaded by one ClassLoader and another ClassLoader invokes System.loadLibrary() the JVM will throw: java.lang.UnsatisfiedLinkError: Native Library x already loaded in another classloader. I don't believe this has anything to do with ClassLoaders. * Tomcat loads each webapp into its own ClassLoader. True. * When reloading a webapp, there is no guarantee that the old ClassLoader will get garbage-collected (thereby ensuring that the old library is unloaded) before the new webapp is launched. When I reload such webapps, I get UnsatisfiedLinkError virtually 100% of the time. I don't think the ClassLoader ever unloads the native library. I haven't found any documentation that suggests that it will. * There is nothing a webapp can do to prevent this problem. Either each webapp needs to run in its own JVM or Tomcat needs to guarantee that the old ClassLoader is GCed before loading the new webapp instance. Or you can put your .jar that wraps your native library in Tomcat's lib directory and take it out of your webapp. That's not the most portable solution, but neither is using a native library in the first place. Tomcat provides the manager webapp and ant tasks to access it, plus a toolbox of scripts to start/stop/etc. Tomcat. Your needs seem to be fairly specific... why not just roll your own solution? Because then every user would have to roll their own solution. Yes, everyone who wants this solution would have to roll their own. From what I can recall, you are the first one who has requested this capability, so I suspect we wouldn't be saving thousands of staff hours by implementing whatever-it-is that you are suggesting -- something like a Tomcat-based hypervisor for multiple Tomcats. Right now it is impossible to reload webapps that use JNI and it is extremely slow to reload the entire JVM. Fixing this in the official release would benefit anyone wishing to use JNI (or libraries that use JNI) from within Tomcat. It's not a good excuse, but native libraries are a pain in the ass in Java. If you use one, be prepared to have your ass hurt. Nowadays with the rise of RESTful interfaces, it makes a lot more sense to wrap a RESTful interface around libraries that interface with native code. Aah, you are a REST guy. That explains the constant appeals against practicality. ;) If you wrapped your JNI library with a REST interface, couldn't you avoid all this foolishness? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk331aUACgkQ9CaO5/Lv0PBdywCfZZISEH2dd7d5MvaP1vdT1EBJ K3kAoLyerD+DbJl0D7L3ucbuc+kZzFPL =UhCi -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Gili, (Sorry, your message was structured in a way I didn't expect, so I didn't see the lower portion). On 6/14/2011 3:54 PM, cowwoc wrote: Chris, I'm asking for a lot more sophistication than simply restarting the JVM. I'm talking about sticking a proxy (on port 80) that acts a front-man. Then each webapp run in its own JVM in some custom port. The proxy redirects traffic to the custom ports. Reloading webapps would do the following: * Grab a blank (loaded without any webapps) Tomcat instance from some pool, ask it to load the new webapp instance. * The new instance runs in a different port than the existing instance * We ask the proxy to forward traffic to the new port instead of the old one * We ask the old instance to shut down * Note that traffic moves across instances instantly (without waiting for the old instance to shut down) The Tomcat team has thus far been unwilling to implement even an HTTP proxy component due to lack of interest from the community. Given that the HTTP proxy would be a major requirement to your above solution, I don't see this happening anytime soon. If this is something that you would like to design and implement yourself, donations of code are always welcome. I don't think anyone around here is going to take on that responsibility, though. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk331swACgkQ9CaO5/Lv0PA0LQCfVybrSezyjMJxC/eHi1nIq1d6 Me8AoLq2f1pOYqLER/ndLhHMtGRJe+/1 =nr2i -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: error in clustering: NullPointerException at java.io.ObjectOutputStream$BlockDataOutputStream.getUTFLength
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Ronald, On 6/14/2011 6:23 AM, Ronald Klop wrote: I see the issue if solved in an upcoming version of Tomcat. Thank you very much for that. But can I expect an upcoming version of Tomcat 6.0 in the not too distant future? At the tomcat-dev list I only see recent votings for 7.0.x. Who normally is the initiator of the 6.x release cycle? I guess anyone can request a new version... whether anyone will roll it is up to them :) I believe Jean-Frederic Clere is the one who usually does TC 6.x releases: http://tomcat.apache.org/tomcat-6.0-doc/changelog.html - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk332cEACgkQ9CaO5/Lv0PBB7ACfYNMPHeJDlltC9HHdKiC/VAml RB4AniwAT6RTwBYNLG5H0nYQmv3hOzG3 =DmoN -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
Christopher Schultz-2 wrote: Can't Netbeans bounce the Tomcat JVM for you? Sure, but if we use the existing mechanism of waiting for for the existing instance to shut down before restarting it then it takes at least 20 seconds each time. I'm looking for a second or less. Christopher Schultz-2 wrote: If this is just in development, why not just wrap System.loadLibrary() in a try/catch block and ignore the exception you get when re-loading the native library? This just seems like it would be a lot of work for not much gain. Because once you get this exception (whether you ignore it or not) you can no longer invoke any of the native methods (they will throw their own exceptions). Essentially, the reload operation has failed. Christopher Schultz-2 wrote: With no webapps deployed at all? Wow, something is not right. Are you sure you have enough memory installed on your dev instance? Starting up a new instance is fairly quick. Shutting down takes a while. That seems strange... do you have a complicated shutdown procedure for your webapp? Tomcat shuts down on my end in very short order when no webapps need to be undeployed. I don't think you and I are measuring the same thing. Tomcat loads up in under 2 seconds, but it takes over 8 seconds to shut down. It is quite possible that the Netbeans plugin is injecting a sleep() somewhere but I'm not sure. I know they have a 5 second sleep for the Glassfish plugin. I'm guessing they had a good reason for adding those calls though. Does Tomcat provide hooks for integrators to know that the webapp is fully unloaded? How long does a restart (without a webapp) take on your end? Christopher Schultz-2 wrote: When restarting a webapp, we don't have to wait for the old instance to finish shutting down (which is slow) before transferring access to another Tomcat instance. If they're going to be using the same port, you do. They wouldn't use the same port. Christopher Schultz-2 wrote: The new instance can simply bind to a different port and the proxy running at port 80 can switch which port it is redirecting requests to. So... you want Tomcat to also notify a 3rd-party that it's being shut down so that a proxy can re-configure itself? No. I would ask the proxy (which would be part of Tomcat) to restart an instance on my behalf. It would do the necessary communication with the instance to request a shutdown and listen for lifecycle events. Christopher Schultz-2 wrote: The only snag I can think of is that the old instance might keep files locked on disk (but I think this is no longer the case with Tomcat 7.x) I don't believe Tomcat locks anything specific. Under certain situations, the JVM and the OS conspire to lock certain resources (usually .jar files) and that can be a problem. If you're starting a new instance in parallel, wouldn't you want to do it from a separate directory anyway? Good point. We could do that. Gili -- View this message in context: http://old.nabble.com/One-process-per-webapp-tp31836121p31847022.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: One process per webapp
Christopher Schultz-2 wrote: So, now you want Tomcat to launch multiple copies of itself as hot standbys for /potential future webapp deployments/? We'll never do this. The exact mechanism is not fixed in stone (I'm sure we could improve on the initial idea). One approach is that administrators should be able to configure webapps in development mode, and in only such a case you'd launch a hot standby. Christopher Schultz-2 wrote: * A webapp must invoke System.loadLibrary() to use JNI. Must it? You can load a native library at a higher-level instead of in the webapp itself and avoid all of this. That's not good enough. Webapps that use JNI will modify DLLs between reloads. Even if you If you load the DLL in some parent ClassLoader you'll still need to unload it every time the webapp is reloaded, otherwise you'll miss changes to the DLL. Christopher Schultz-2 wrote: * If a library is loaded by one ClassLoader and another ClassLoader invokes System.loadLibrary() the JVM will throw: java.lang.UnsatisfiedLinkError: Native Library x already loaded in another classloader. I don't believe this has anything to do with ClassLoaders. Yes it does. Read the evaluation of http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4286309 You may only load a library into one ClassLoader at a time. The library is only unloaded from the JVM when the ClassLoader is garbage-collected. Christopher Schultz-2 wrote: I don't think the ClassLoader ever unloads the native library. I haven't found any documentation that suggests that it will. This was indeed hard to track down. See the evaluation of http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4119554 and http://codethesis.com/tutorial.php?id=1 Worse-case scenario we could run independent tests to verify this but either way I think we can both agree the safest and easiest way to ensure proper reloading of native libraries is to restart the JVM. Christopher Schultz-2 wrote: Or you can put your .jar that wraps your native library in Tomcat's lib directory and take it out of your webapp. That's not the most portable solution, but neither is using a native library in the first place. That's not an option because as I've mentioned before the native library is potentially the very thing you are redeploying. Christopher Schultz-2 wrote: It's not a good excuse, but native libraries are a pain in the ass in Java. If you use one, be prepared to have your ass hurt. :) With all due respect, they are only painful to use in web containers. They are extremely simple to use in desktop applications. Christopher Schultz-2 wrote: Aah, you are a REST guy. That explains the constant appeals against practicality. ;) If you wrapped your JNI library with a REST interface, couldn't you avoid all this foolishness? That's precisely what I'm doing :) I still need to be able to redeploy the native library though. Think of the native library + RESTful interface + Tomcat as an appliance. I'm making regular updates to the library and I need to restart it quickly to speed up the debugging process. Gili -- View this message in context: http://old.nabble.com/One-process-per-webapp-tp31836121p31847177.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7.0.11 embedded does not load context.xml [SEC=UNCLASSIFIED]
UNCLASSIFIED Great, thankyou. -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Tuesday, 14 June 2011 8:38 PM To: Tomcat Users List Subject: Re: Tomcat 7.0.11 embedded does not load context.xml [SEC=UNCLASSIFIED] On 14/06/2011 05:14, Fraser, James wrote: UNCLASSIFIED Hi, I am trying to embed Tomcat 7.0.11 into my standard web application. This web application defines some Resource elements in META-INF/context.xml - yet, Tomcat is not loading this file. addWebapp should return a Context object. You'll need to call setConfigFile() on that Context object. Mark tomcat = new Tomcat(); tomcat.setBaseDir(.); tomcat.setPort(8084); tomcat.addWebapp(/, System.getProperty(user.dir) + /build/web); tomcat.setHostname(localhost); tomcat.enableNaming(); tomcat.start(); Causes the following error: javax.naming.NamingException: Cannot create resource instance at org.apache.naming.factory.ResourceEnvFactory.getObjectInstance(Resourc eE nvFactory.java:117) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) at org.apache.naming.NamingContext.lookup(NamingContext.java:826) at org.apache.naming.NamingContext.lookup(NamingContext.java:145) at org.apache.naming.NamingContext.lookup(NamingContext.java:814) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) at dsto.adiib.ws.harmoniser.AdiibHarmoniser.init(AdiibHarmoniser.java:1 13 ) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructo rA ccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingCo ns tructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at java.lang.Class.newInstance0(Class.java:355) at java.lang.Class.newInstance(Class.java:308) at com.sun.xml.ws.api.server.InstanceResolver.createNewInstance(InstanceR es olver.java:215) at com.sun.xml.ws.api.server.InstanceResolver.createDefault(InstanceResol ve r.java:180) at com.sun.xml.ws.server.EndpointFactory.createEndpoint(EndpointFactory.j av a:123) at com.sun.xml.ws.api.server.WSEndpoint.create(WSEndpoint.java:505) at com.sun.xml.ws.transport.http.DeploymentDescriptorParser.parseAdapters (D eploymentDescriptorParser.java:253) at com.sun.xml.ws.transport.http.DeploymentDescriptorParser.parse(Deploym en tDescriptorParser.java:147) at com.sun.xml.ws.transport.http.servlet.WSServletContextListener.context In itialized(WSServletContextListener.java:124) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext .j ava:4681) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5 18 4) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5 17 9) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecu to r.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor. ja va:908) at java.lang.Thread.run(Thread.java:662) Line 113 of AdiibHarmoniser is like so: HarmoniserImplConfigBean harmoniserImplConfigBean = (HarmoniserImplConfigBean)envCtx.lookup(beanName); This essentially loads some external beans for me. My context.xml looks like so: ?xml version=1.0 encoding=UTF-8? Context antiJARLocking=true path=/AdiibHarmoniser Resource auth=Container csdTypeComparatorValue=VIDEO csdViewDataModel=NSIL_VIDEO_VIEW dibTextPath=//video factory=org.apache.naming.factory.BeanFactory harmonise=true harmoniserClassName=dsto.adiib.ws.harmoniser.FmvHarmoniser name=bean/FmvFactory subscriptionId=adiibFmvHarmoniser type=dsto.adiib.ws.harmoniser.HarmoniserImplConfigBean/ Resource auth=Container csdTypeComparatorValue=IMAGERY csdViewDataModel=NSIL_IMAGERY_VIEW dibTextPath=//nitf factory=org.apache.naming.factory.BeanFactory harmonise=true harmoniserClassName=dsto.adiib.ws.harmoniser.NitfHarmoniser name=bean/NitfFactory subscriptionId=adiibNitfHarmoniser type=dsto.adiib.ws.harmoniser.HarmoniserImplConfigBean/ /Context Using normal Tomcat (non embedded) everything works fine. I found a post similar to my problem here: http://stackoverflow.com/questions/5238451/jndi-jdbc-data-source-in-em be dded-tomcat-7, yet this caused a followon exception. java.lang.NoSuchMethodError: org.apache.catalina.Context.setConfigFile(Ljava/lang/String;)V Any ideas? Kind Regards, James IMPORTANT: This email remains the property of the Department of Defence and is
Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED]
UNCLASSIFIED
Hi,
I have the following in my unit test.
@BeforeClass
public static void setUpClass() throws ServletException,
LifecycleException, MalformedURLException {
tomcat = new Tomcat();
tomcat.setBaseDir(.);
tomcat.setPort(8084);
Context ctx = tomcat.addWebapp(/,
System.getProperty(user.dir) + /build/web);
tomcat.setHostname(localhost);
File contextFile = new File(System.getProperty(user.dir) +
/build/web/META-INF/context.xml);
ctx.setConfigFile(contextFile.toURI().toURL());
tomcat.enableNaming();
tomcat.start();
tomcat.getServer().await();
}
Without the line `tomcat.getServer().await();`, Tomcat simply stops;
with the line `tomcat.getServer().await();`, it looks as though the
thread blocks and my unit tests don't execute.. Any idea?
James
IMPORTANT: This email remains the property of the Department of Defence
and is subject to the jurisdiction of section 70 of the Crimes Act 1914.
If you have received this email in error, you are requested to contact
the sender and delete the email.
RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED]
From: Fraser, James [mailto:james.fra...@dsto.defence.gov.au] Subject: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED] tomcat.enableNaming(); tomcat.start(); tomcat.getServer().await(); Without the line `tomcat.getServer().await();`, Tomcat simply stops; As expected, since all of Tomcat's threads are daemons. with the line `tomcat.getServer().await();`, it looks as though the thread blocks and my unit tests don't execute.. Not having used an embedded Tomcat, I can't really comment on what you're missing. You might first try diagnosing it by connecting to the program (with the await() in place) via JConsole, and see what threads are present. Compare that with Tomcat running normally (not embedded). - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED]
UNCLASSIFIED I read that Apache use embedded Tomcat for unit testing. Are there any examples floating around? -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Wednesday, 15 June 2011 10:01 AM To: Tomcat Users List Subject: RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED] From: Fraser, James [mailto:james.fra...@dsto.defence.gov.au] Subject: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED] tomcat.enableNaming(); tomcat.start(); tomcat.getServer().await(); Without the line `tomcat.getServer().await();`, Tomcat simply stops; As expected, since all of Tomcat's threads are daemons. with the line `tomcat.getServer().await();`, it looks as though the thread blocks and my unit tests don't execute.. Not having used an embedded Tomcat, I can't really comment on what you're missing. You might first try diagnosing it by connecting to the program (with the await() in place) via JConsole, and see what threads are present. Compare that with Tomcat running normally (not embedded). - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org IMPORTANT: This email remains the property of the Department of Defence and is subject to the jurisdiction of section 70 of the Crimes Act 1914. If you have received this email in error, you are requested to contact the sender and delete the email. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED]
From: Fraser, James [mailto:james.fra...@dsto.defence.gov.au] Subject: RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED] I read that Apache use embedded Tomcat for unit testing. Are there any examples floating around? Good thought. I believe all of the tests are in the Tomcat source download; they run inside junit. I'm sure Mark T could tell you exactly what's wrong, but I suspect he's sleeping at the moment (UK). - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Embedded tomcat and unit testing.. Tomcat either stops or my unit tests don't execute? [SEC=UNCLASSIFIED]
UNCLASSIFIED
Hi Chuck,
Thanks for your help. I got it working in the end. I suspect the main
problem had to do with not terminating the running instance of Tomcat
correctly in a tear-down method. I solved this using the example in the
Tomcat unit tests; i.e.
@AfterClass
public static void tearDownClass() throws LifecycleException {
if (tomcat.getServer() != null
tomcat.getServer().getState() !=
LifecycleState.DESTROYED) {
if (tomcat.getServer().getState() != LifecycleState.STOPPED)
{
tomcat.stop();
}
tomcat.destroy();
}
}
- James
-Original Message-
From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com]
Sent: Wednesday, 15 June 2011 11:27 AM
To: Tomcat Users List
Subject: RE: Embedded tomcat and unit testing.. Tomcat either stops or
my unit tests don't execute? [SEC=UNCLASSIFIED]
From: Fraser, James [mailto:james.fra...@dsto.defence.gov.au]
Subject: RE: Embedded tomcat and unit testing.. Tomcat either stops or
my unit tests don't execute? [SEC=UNCLASSIFIED]
I read that Apache use embedded Tomcat for unit testing. Are there any
examples floating around?
Good thought. I believe all of the tests are in the Tomcat source
download; they run inside junit.
I'm sure Mark T could tell you exactly what's wrong, but I suspect he's
sleeping at the moment (UK).
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
MATERIAL and is thus for use only by the intended recipient. If you
received this in error, please contact the sender and delete the e-mail
and its attachments from all computers.
-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
IMPORTANT: This email remains the property of the Department of Defence
and is subject to the jurisdiction of section 70 of the Crimes Act 1914.
If you have received this email in error, you are requested to contact
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-
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