Connect to multiple clusters

Please ignore this post...
Mod, Please delete this.
Edited by: user11988716 on Nov 11, 2009 7:42 AM
Edited by: user11988716 on Nov 11, 2009 7:42 AM
Edited by: user11988716 on Nov 11, 2009 7:44 AM

Similar Messages

Connecting to multiple clusters from the same client

We have a scenario where our cache client (extend client) should be able to connect to multiple clusters. All the clusters use the exact same configuration (same caches, same services etc) but running in different geographical locations. I know that the <remote-addresses> can be used to add multiple addresses but I'm assuming this is provided solely for fault tolerance. So, does the client actually support connecting to multiple clusters at the same time?
Thanks
Sijo Mathew

Hi Sijo,
Normally to connect a client to multiple clusters you would just define multiple <proxy-scheme> settings in your client configuration file, each one having a different name and pointing to a different cluster. You then map caches to the proxy-scheme for the cluster those caches live on.
What may confuse things in your case is that you say the different clusters are identical and contain the same caches and services so you may have problems mapping caches on the client to different clusters.
What are you trying to achieve by doing this if the clusters are all identical?
JK

Connecting to multiple clusters using WAR file

I am trying to connect to multiple clusters by creating separate WAR(web archive) files through Apache tomcat.
My intention is to have each 'war' act as a node to a separate cluster. I started with the 'jmx-console' example available on the Tangosol website.
So, my understanding is that even though all the war files are loaded in the same JVM (tomcat), since each of these war's has its own classloader, we can have multiple tangosol ndoes from the same JVM.
So I have two basic questions:
*) If I use system.setProperty("tangosol.coherence.override", myOverrideFile-x) in the class loader of each WAR, can I have the nodes connect to different clusters. is'nt the System.setProperty() setting the property on the JVM? If so, how can multiple classloaders running in the same JVM connect to different clusters?
*) Where should I place config/override xml files under the tomcat directory structure for it to be accesible to the class loader.

Hi sumax,
Thanks for your response Robert,
Maybe I did not understand your solution fully, I
thought your idea mostly talks about how to configure
the override files, and not how to configure the
individual nodes to use different override files.
That part is taken care of by the fact, that each war file loads the tangosol-coherence-override.xml from its own WEB-INF/classes directory.
Classloading from a web app in Tomcat resolves classpath classes/resources in the following order:
1. java.* and javax.* and com.sun.* packages are loaded from the system classloader. This, I believe, cannot be circumvented on a Sun JVM with a classloader extending a JDK classloader class.
2. Reloadable JSP classloader (loads servlet classes generated from JSP pages). This is webapp specific, each webapp sees its own generated servlet classes.
3. Reloadable Webapp classloader (loads from WEB-INF/classes and WEB-INF/lib of the war). This is webapp specific, each webapp sees its own WEB-INF/classes and WEB-INF/lib.
4. Common classloader (loads from ${TOMCAT_HOME}/common/classes and ${TOMCAT_HOME}/common/lib). This is used by all webapps and the Tomcat container itself. You should not put anything here, except for libraries for resource drivers, etc. JDBC drivers or anything which needs to be published in the JNDI server in a non-application-specific way.
5. Shared classloader (loads from ${TOMCAT_HOME}/shared/classes and ${TOMCAT_HOME}/shared/lib). This is shared between all webapps but not by the Tomcat container. You can put libraries here with which you want to communicate between webapps. Any singletons in classes in this classloader will be shared between webapps. A place for configuration files which are shared or if they have the application name in their filenames (so that they are not accidentally used by another application).
The question still lingering in my mind is:
How do I tell the classloader which override file to
load.
A tangosol-coherence-override.xml with different content should be put in the WEB-INF/classes directory of each war file. Each of those files will be loaded only by its containing webapp. This filename is defined in the deployment-mode-specific override files in coherence.jar or tangosol.jar (I don't remember which, off my head) which all chain to this same tangosol-coherence-override.xml file.
That override file can contain all your overrides, if you do not want to change those between restarts, or it can chain with its xml-override attribute (as shown in the example) to another file with the application name in its filename.
This chaining allows each webapp to refer to a differently named override file, so all those override files can be put into shared/classes folder. The uniquely named override file in shared/classes allows you to change the override configuration between restarts.
As for cluster address and port, you can specify those in any of the override files.
The full chaining path is the following (if you used the tangosol-coherence-override.xml example in my first reply):
tangosol-coherence.xml -> tangosol-coherence-prod.xml -> tangosol-coherence.xml (you provide this file in your webapp WEB-INF/classes) -> tangosol-coherence-override-warfilename.xml (you provide this file in the ${TOMCAT_HOME}/shared/classes)
I hope this makes it clear.
Best regards,
Robert

Multiple clusters on a single machine

Hi everyone. I have a question about running 2 clusters on a same
          machine.
          Here's the scenario. We have 8 WebLogic server (4.5.1 SP4) instances
          running on
          2 servers (Sun Enterprise 5500/Solaris 2.62) right now for one of our
          eCommerce
          application.
          Now we are getting ready to deploy a 2nd application and we want it to
          have its
          own cluster. So we are hoping to run 4 more WebLogic servers on each of
          the 2
          machines. So machine #1 would have 4 WebLogic servers for cluster A and
          4
          WebLogic servers for cluster B. And machine #2 will have 4 WebLogic
          servers for
          cluster A and 4 WebLogic servers for cluster B.
          All of these servers have unique IP address and each cluster has a
          different
          name and multicast IP address. Both clusters are using in-memory
          replication.
          On both machines, each of the cluster member will share the same global
          weblogic.properties file. The cluster specific portion resides in the
          cluster
          directory.
          Is anyone currently running such a configuration?? Is there something
          we should
          worry about?? Since both of these servers are in their own isolate
          network
          segment, is there any danger of multicast broadcast bleeding into the
          different
          cluster?? Thanks in advance.


Hi Michael and thanks.. No, this is 2 systems on the same network and not two
          independent networks. Here's what I found that's very strange. I started
          server 1 ->4 for the first cluster and everything worked fine. Now I started
          server 5 on the first machine that's in a different cluster and has a totally
          different multicast IP address and yet, server 1 of the first cluster recorded
          server 5 joining the cluster. Server 2, 3 and 4 of the first cluster did not
          have RJVM 'Creating connection' message in there.
          On server 5's startup, server 1 decided to make server 5 it's secondary pair and
          I get the following error as server 5 does not have the same code for cluster1.
          After that error, I started getting tons of
          weblogic.cluster.replication.BadStatusException error in the logs for server 1
          listed below. I'm sure running multiple clusters off an enterprise level
          server is something people want to do. Is this a known issue?? Is this a bug
          in the server or the VM?
          Our environment: Sun 5500 Enterprise servers running Solaris 2.62, WebLogic
          4.5.1 SP4.
          Sun Jan 09 15:19:40 CST 2000:<I> <RJVM> Creating connection to
          stingray05.xx.com/10.x.x.x t3:7001 http:7001 t3s:7002 https:7002
          -1353087187406741800
          Sun Jan 09 15:19:41 CST 2000:<E> <MulticastSocket> Multicast socket receive
          error:
          Sun Jan 09 15:19:41 CST 2000:<E> <MulticastSocket>
          java.lang.ClassNotFoundException: Could not instantiate new instance of
          [com.strong.brokerage.server.CustomerSessionBeanHomeImpl_WLStub]
          Either the class is missing from classpath, the class does not have a public
          constructor, or the constructor raised an error; the actual exception was a :
          java.lang.NoClassDefFoundError: com.strong.brokerage.common.util.RegistrationCtx
          at java.lang.Throwable.<init>(Compiled Code)
          at java.lang.Exception.<init>(Compiled Code)
          at java.lang.ClassNotFoundException.<init>(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readLeftover(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectBody(Compiled Code)
          at weblogic.common.internal.WLObjectInputStreamBase.readObject(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(Compiled Code)
          at weblogic.service.ReplicaAggregate.readExternal(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readPublicSerializable(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readLeftover(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectBody(Compiled Code)
          at weblogic.common.internal.WLObjectInputStreamBase.readObject(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(Compiled Code)
          at weblogic.cluster.BasicServiceOffer.readObject(Compiled Code)
          at weblogic.cluster.AnnotatedServiceOffer.readObject(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readPublicSerializable(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readLeftover(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectBody(Compiled Code)
          at weblogic.common.internal.WLObjectInputStreamBase.readObject(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readArrayList(Compiled Code)
          at weblogic.cluster.Announcement.readObject(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readPublicSerializable(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readLeftover(Compiled Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectBody(Compiled Code)
          at weblogic.common.internal.WLObjectInputStreamBase.readObject(Compiled
          Code)
          at
          weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(Compiled Code)
          at weblogic.cluster.TMSocket.execute(Compiled Code)
          at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
          Sun Jan 09 15:24:42 CST 2000:<E> <HTTP> Servlet request terminiated with Error:
          Sun Jan 09 15:24:42 CST 2000:<E> <HTTP>
          weblogic.cluster.replication.BadStatusException: update found
          -5050872662681587012 but it is not the secondary
          at weblogic.rmi.extensions.BasicRequest.sendReceive(Compiled Code)
          at
          weblogic.cluster.replication.ReplicationManager_WLStub.update(Compiled Code)
          at
          weblogic.cluster.replication.ReplicationManager.updateSecondary(Compiled Code)
          at weblogic.servlet.internal.session.ReplicatedSession.sync(Compiled
          Code)
          at
          weblogic.servlet.internal.session.ReplicatedSessionContext.sync(Compiled Code)
          at weblogic.servlet.internal.ServletRequestImpl.syncSession(Compiled
          Code)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
          Code)
          at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
          Code)
          at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
          Code)
          at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
          at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
          at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
          --------------- nested within: ------------------
          weblogic.utils.NestedError: Tried to update secondary, but it thought it was the
          primary
          - with nested exception:
          [weblogic.cluster.replication.BadStatusException: update found
          -5050872662681587012 but it is not the secondary]
          at java.lang.Throwable.<init>(Compiled Code)
          at java.lang.Error.<init>(Compiled Code)
          at weblogic.utils.NestedError.<init>(Compiled Code)
          at weblogic.servlet.internal.session.ReplicatedSession.sync(Compiled
          Code)
          at
          weblogic.servlet.internal.session.ReplicatedSessionContext.sync(Compiled Code)
          at weblogic.servlet.internal.ServletRequestImpl.syncSession(Compiled
          Code)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled
          Code)
          at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
          Code)
          at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
          Code)
          at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
          at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
          at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
          Michael Girdley wrote:
          > Vinny,
          >
          > It sounds like the real hard problem here is a system administration and
          > configuration issue. If you have two independent networks with independent
          > systems, then you should not have a problem running two clusters across two
          > machines. You just need to make sure that your routing for multicast is
          > appropriately configured so that they don't confuse the two different
          > WebLogic server clusters.
          >
          > I hope this helps. I might also recommend contacting our sales organization
          > who can put you in touch with a systems engineer who is a professional at
          > making these types are recommendations.
          >
          > Thanks!
          >
          > --
          > Michael Girdley
          > BEA Product Manager
          >
          > Vinny Carpenter <[email protected]> wrote in message
          > news:[email protected]...
          > > Hi everyone. I have a question about running 2 clusters on a same
          > > machine.
          > > Here's the scenario. We have 8 WebLogic server (4.5.1 SP4) instances
          > > running on
          > > 2 servers (Sun Enterprise 5500/Solaris 2.62) right now for one of our
          > > eCommerce
          > > application.
          > >
          > > Now we are getting ready to deploy a 2nd application and we want it to
          > > have its
          > > own cluster. So we are hoping to run 4 more WebLogic servers on each of
          > > the 2
          > > machines. So machine #1 would have 4 WebLogic servers for cluster A and
          > > 4
          > > WebLogic servers for cluster B. And machine #2 will have 4 WebLogic
          > > servers for
          > > cluster A and 4 WebLogic servers for cluster B.
          > >
          > > All of these servers have unique IP address and each cluster has a
          > > different
          > > name and multicast IP address. Both clusters are using in-memory
          > > replication.
          > > On both machines, each of the cluster member will share the same global
          > > weblogic.properties file. The cluster specific portion resides in the
          > > cluster
          > > directory.
          > >
          > > Is anyone currently running such a configuration?? Is there something
          > > we should
          > > worry about?? Since both of these servers are in their own isolate
          > > network
          > > segment, is there any danger of multicast broadcast bleeding into the
          > > different
          > > cluster?? Thanks in advance.
          > >
          > >
          > >
          > >

How to configure multiple clusters on the same machine.

I am attempting to configure multiple clusters on the same set of machines. I have set the cluster name and multicase IP addresses to be different for each cluster. However I am still getting and error that states:
"This indicates that there are multiple clusters on this network attempting to use overlapping network configurations."
Is this not possible? If it is possible, is there some further way i need to tell the VMs they are part of different clusters?
Thanks,
Jacob

FYI: I'm using the wrong multicast IP above. 224.0.0.1 is reserved and something else should be used. See:
Re: UDP flood hosed my LAN?

How to use a connection across multiple request

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Unable to connect to multiple drives at the same time on Windows

It is not possible to connect to a second Drive on Windows. When you try to do this, an error occurs in the AD log and a general failure message is shown to the user.
See also the attached screenshot. On Mac OSX, it is possible to connect to multiple drives without errors.
Tested and reproducible with with
Adobe Drive 3.2 running on Windows 7 x64
Adobe Drive 3.2 running on Windows 2008 R2
How to reproduce
Connect to Server A, mounts correctly as Z:\
Connect to Server B, error
Error in the AD log
2012/04/23 12:00:32,343 [ConnectionHandler-Adobe Drive.exe-2796] ERROR MountService - osIntegration.mount() failed
com.adobe.drive.data.model.DriveException: the server with uuid elvis_server_192.168.72.87_8080 could not be mounted
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    at com.adobe.drive.internal.biz.filesystem.mount.MountService.mount(MountService.java:102)
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    at com.adobe.drive.ui.ncomm.handler.AddServerHandler.handle(AddServerHandler.java:136)
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    at com.adobe.versioncue.internal.nativecomm.host.Host.execute(Host.java:200)
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    at com.adobe.versioncue.internal.nativecomm.host.ConnectionHandler.run(ConnectionHandler.java:81)
    at java.lang.Thread.run(Unknown Source)
2012/04/23 12:00:32,368 [ConnectionHandler-Adobe Drive.exe-2796] ERROR AddServerHandler - Adding server failed
com.adobe.drive.data.model.DriveException: the server with uuid elvis_server_192.168.72.87_8080 could not be mounted
    at com.adobe.drive.internal.biz.filesystem.mount.OperatingSystemIntegrationWin.mount(OperatingSystemIntegrationWin.java:109)
    at com.adobe.drive.internal.biz.filesystem.mount.MountService.internalMount(MountService.java:144)
    at com.adobe.drive.internal.biz.filesystem.mount.MountService.mount(MountService.java:102)
    at com.adobe.drive.ui.ncomm.handler.MountServerHandler.mountServer(MountServerHandler.java:274)
    at com.adobe.drive.ui.ncomm.handler.AddServerHandler.handle(AddServerHandler.java:136)
    at com.adobe.csi.internal.ncomm.InvokeHandler.handle(InvokeHandler.java:88)
    at com.adobe.csi.internal.ncomm.NCommDelegate.execute(NCommDelegate.java:107)
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    at com.adobe.versioncue.internal.nativecomm.host.ConnectionHandler.handleRequest(ConnectionHandler.java:162)
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Hello,
I am actually trying to implement a text editor with multiple carets,
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Load-balancing issues with iPlanet and multiple clusters

We're in performance test of a large-scale clustered deployment based on WLS 5.1sp10.
Due to scalability/functionality issues, some of which we've seen firsthand and
some of which we've been informed of by associates as well as BEA representatives,
we've chosen to implement multiple clusters with a maximum of three nodes each.
These clusters will be fronted by a web server tier consisting of iPlanet servers
using the proxy plugin.
Due to hardware constraints (both in test and in production), however, we've configured
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<Object name="application" ppath="*/application">
Service fn="wl-proxy" \
WebLogicCluster="clusterA_1:9990,clusterB_1:9991,clusterA_2:9990,clusterB_2:9991,clusterA_3:9990,
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</Object>
Our issue is that the load-balancing doesn't appear to work across the clusters.
We're seeing one cluster get about 90% of the load, while the other receives
only 10%.
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Thanks in advance,
cramer

I use weblogic6.1 with sp2+windows 2000.I develop a web application and deploy
it to cluster.Through HttpClusterServlets proxy of weblogic I found that a server
in cluster almost get 95% of requests but another only get 5% of requests.Why???
I don't set any special parameter.And the weight of the two clustered server is
equal.I use round-robin arithmetic.
Thanks!
"cramer" <[email protected]> wrote:
>
We're in performance test of a large-scale clustered deployment based
on WLS 5.1sp10.
Due to scalability/functionality issues, some of which we've seen firsthand
and
some of which we've been informed of by associates as well as BEA representatives,
we've chosen to implement multiple clusters with a maximum of three nodes
each.
These clusters will be fronted by a web server tier consisting of iPlanet
servers
using the proxy plugin.
Due to hardware constraints (both in test and in production), however,
we've configured
the iPlanet servers to route across the multiple clusters. In our test
environment,
for instance, we've got a single iPlanet server routing across two 3-node
clusters,
and the configuration in obj.conf is as follows:
<Object name="application" ppath="*/application">
Service fn="wl-proxy" \
WebLogicCluster="clusterA_1:9990,clusterB_1:9991,clusterA_2:9990,clusterB_2:9991,clusterA_3:9990,
clusterB_3:9991" \
CookieName="ApplicationSession"
</Object>
Our issue is that the load-balancing doesn't appear to work across the
clusters.
We're seeing one cluster get about 90% of the load, while the other
receives
only 10%.
So, the question (finally!) is: Is this configuration correct (i.e.,
will it
work according to the logic of the proxy plugin), and is it appropriate
for this
situation? Are there other alternative approaches that anyone can recommend?
Thanks in advance,
cramer

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Netbeans IDE
Java Derby Database
Oracle Database
Java Persistence API
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Limitation is only when you are using proxy because here you are using native XI protocol and depend on these administration settings in SXMB_ADM. In SXMB_ADM there is one selection you can choose either INTEGRATION SERVER or NON INTEGRATION SERVER. If you choose non integration you have to point to your current integration server and here you can only fill one destination.
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Connect to multiple clusters

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