Excluded contexts
by Paul Ferraro
1.0.0.Beta3 adds a new excludedContexts configuration property that
defines a comma delimited list of web contexts that should *not*
auto-register with httpd. Does anyone have any suggestions/comments
about which contexts to disable by default? Currently, this property
defaults to:
<property name="excludedContexts">ROOT,invoker,jbossws,jmx-console,juddi,web-console</property>
i.e. all contexts deployed by default in the JBoss AS all profile.
As I think about this more, I think we should use a system property for
this instead - and perhaps enable the ROOT context by default?
e.g.
<property name="excludedContexts">${jboss.modcluster.excludedContexts:invoker,jbossws,jmx-console,juddi,web-console}</property>
Thoughts?
Paul
14 years, 8 months
MODCLUSTER-27
by jean-frederic clere
Hi,
Just moving a private discussion to the list. For more comments.
The screenshot is at
http://www.jboss.org/file-access/default/members/mod_cluster/freezone/ima...
The actual idea is to add small links (like buttons) to do the operations:
Context:
enable/stop/disable on a context. (disable means no new session (a new
session is request without sessionid) and enable means re-enable a
stopped or disabled context.
Node:
start/stop/enable/disable on node.
That corresponds to the mod_jk concept (active/disable/stop). We can't
start or stop a node from httpd because the node should be discovered
automatically and administered in the cluster.
But in the mod_cluster logic a disabled node is just a node with all its
contexts disabled and a stop node corresponds to all contexts stopped.
I would proposed links that do the following:
disable node = disable all contexts of node.
stop node = stop all contexts of node.
activate node = restore the state the cluster has sent to httpd
Of course all those actions are undone by restarting a node or the
webapp in the cluster.
Bela Ban wrote:
>
>
> jean-frederic clere wrote:
>> Now I have a "nice" status page.
>
> Excellent, looks good !
>
>
>> I am still thinking about the part:
>> +++
>> - allow a user to disable/enable a web app
>> - start/stop/enable/disable a cluster node
>> +++
>> Will this bring more problems that help?
>
> OK, we should at least have the *same* functionality we have for mod-jk
> and the /status/ app. We *can* enable/stop/disable workers with /status/.
>
> Let's leave enabling/disabling of webapps out for now.
In fact the logic in context = webapps and it is already there it just
need a simple extension.
>
>> Because any change of topology in the cluster nodes will of course
>> overwrite the user action. Are you sure we need something like that?
>
> I think that's fine.
Ok.
>
>
>> For example:
>> 1 - The user in httpd disable an application.
>> 2 - The application is redeployed on that node: that means it is
>> removed at some point in the logic and created again. When it is
>> created again we have lost the information that it was disabled by the
>> httpd user.
>> 3 - The user will seen the application "magically" enable again.
>
> That's the behavior I'd expect
Me too.
>
>> That looks logic for me but I am not sure it won't give complains in
>> future.
>>
>> Comments? - May I should just have "temporarily" in front of the
>> disable/enable/start/stop (and start/stop needs another wording) -
>
> Can we discuss this on the mod-cluster mailing list ? I'm sure you'll
> get more valuable input there...
More comments?
Cheers
Jean-Frederic
14 years, 8 months
Re: Session stickiness and domains
by Bela Ban
Are domains available for mod-cluster, too ? How do I configure the
JBoss side to set up domains ?
Paul Ferraro wrote:
> On Mon, 2009-01-12 at 14:31 -0600, Brian Stansberry wrote:
>> Seems Paul Ferraro isn't getting mail for
>> jboss-support-clustering(a)redhat.com, so am copying him. He tested all
>> this stuff last month; he can fill you in on his detailed results
>> (bottom line; sessions were sticky to the server, and then to the
>> domain, finally failing outside the domain if all domain nodes are down.
>> Perfect behavior for buddy replication where buddy pool membershi[ ==
>> domain membership.)
>>
>> Paul, can you add a wiki page about that?
>
> Done:
> https://www.jboss.org/community/docs/DOC-13247
--
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat
14 years, 8 months
Long stack traces
by Bela Ban
Trying to access a webapp (/web) in the node1/node2 cluster: the browser
hangs and eventually (after several minutes returns a 503). CTRL-3 on
node1 yielded several long stack traces (this is 2 dumps). Can someone
look into it ? This goes on forever, even after the 503 is returned...
Name: Incoming-12,192.168.1.5:57544
State: RUNNABLE
Total blocked: 4 Total waited: 24,105
Stack trace:
java.util.Collections$SynchronizedList.remove(Collections.java:1825)
- locked java.util.Collections$SynchronizedList@45b84e09
org.jboss.classloader.spi.base.ClassLoaderManager.unregisterLoaderThread(ClassLoaderManager.java:115)
- locked java.util.Collections$SynchronizedList@45b84e09
org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:1011)
- locked org.jboss.classloader.spi.base.BaseClassLoader@7b17ad7b
org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:894)
org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:289)
org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:256)
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1099)
org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:735)
org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:378)
- locked org.jboss.classloader.spi.base.BaseClassLoader@3bbe9a50
java.lang.ClassLoader.loadClass(ClassLoader.java:252)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
- locked org.jboss.classloader.spi.base.BaseClassLoader@3bbe9a50
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:621)
org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:62)
org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:509)
org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:469)
java.security.AccessController.doPrivileged(Native Method)
org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:467)
- locked org.jboss.classloader.spi.base.BaseClassLoader@3bbe9a50
org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:444)
org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:134)
org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:131)
org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:452)
org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:254)
org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:256)
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1099)
org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:735)
org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:378)
- locked org.jboss.classloader.spi.base.BaseClassLoader@3bbe9a50
java.lang.ClassLoader.loadClass(ClassLoader.java:252)
org.jboss.invocation.MarshalledValueInputStream.resolveClass(MarshalledValueInputStream.java:101)
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
java.util.HashSet.readObject(HashSet.java:291)
sun.reflect.GeneratedMethodAccessor209.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
org.jboss.ha.framework.server.ClusterPartition.objectFromByteBufferResponseInternal(ClusterPartition.java:1887)
org.jboss.ha.framework.server.ClusterPartition$ResponseMarshallerImpl.objectFromByteBuffer(ClusterPartition.java:2084)
org.jgroups.blocks.RpcDispatcher$MarshallerAdapter.objectFromByteBuffer(RpcDispatcher.java:138)
org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:557)
org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:368)
org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:775)
org.jgroups.JChannel.up(JChannel.java:1274)
org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:462)
org.jgroups.protocols.pbcast.FLUSH.up(FLUSH.java:377)
org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:144)
org.jgroups.protocols.FRAG2.up(FRAG2.java:192)
org.jgroups.protocols.FC.up(FC.java:468)
org.jgroups.protocols.pbcast.GMS.up(GMS.java:796)
org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:233)
org.jgroups.protocols.UNICAST.handleDataReceived(UNICAST.java:616)
org.jgroups.protocols.UNICAST.up(UNICAST.java:282)
org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:747)
org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:167)
org.jgroups.protocols.FD.up(FD.java:284)
org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:308)
org.jgroups.protocols.MERGE2.up(MERGE2.java:144)
org.jgroups.protocols.Discovery.up(Discovery.java:263)
org.jgroups.protocols.PING.up(PING.java:270)
org.jgroups.protocols.TP$ProtocolAdapter.up(TP.java:2319)
org.jgroups.protocols.TP.passMessageUp(TP.java:1253)
org.jgroups.protocols.TP.access$100(TP.java:49)
org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1830)
org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1809)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:619)
"Incoming-12,192.168.1.5:57544" prio=10 tid=0x00000000455b1000
nid=0x7b55 runnable [0x000000003ed7f000..0x000000003ed82bf0]
java.lang.Thread.State: RUNNABLE
at
java.util.Collections$SynchronizedCollection.isEmpty(Collections.java:1560)
- locked <0x000000001d3ce1d0> (a
java.util.Collections$SynchronizedList)
at
org.jboss.classloader.spi.base.ClassLoaderManager.unregisterLoaderThread(ClassLoaderManager.java:113)
- locked <0x000000001d3ce1d0> (a
java.util.Collections$SynchronizedList)
at
org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:1011)
- locked <0x000000001ac6f480> (a
org.jboss.classloader.spi.base.BaseClassLoader)
at
org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:894)
at
org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:289)
at
org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
at
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:256)
at
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1099)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:735)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:378)
- locked <0x0000000015c73390> (a
org.jboss.classloader.spi.base.BaseClassLoader)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
- locked <0x0000000015c73390> (a
org.jboss.classloader.spi.base.BaseClassLoader)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at
org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:62)
at
org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:509)
at
org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:469)
at java.security.AccessController.doPrivileged(Native Method)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:467)
- locked <0x0000000015c73390> (a
org.jboss.classloader.spi.base.BaseClassLoader)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:444)
at
org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:134)
at
org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:131)
at
org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:452)
at
org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:254)
at
org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:148)
at
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:256)
at
org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1099)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:735)
at
org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:378)
- locked <0x0000000015c73390> (a
org.jboss.classloader.spi.base.BaseClassLoader)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at
org.jboss.invocation.MarshalledValueInputStream.resolveClass(MarshalledValueInputStream.java:101)
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575)
at
java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at java.util.HashSet.readObject(HashSet.java:291)
at sun.reflect.GeneratedMethodAccessor209.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at
java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at
org.jboss.ha.framework.server.ClusterPartition.objectFromByteBufferResponseInternal(ClusterPartition.java:1887)
at
org.jboss.ha.framework.server.ClusterPartition$ResponseMarshallerImpl.objectFromByteBuffer(ClusterPartition.java:2084)
at
org.jgroups.blocks.RpcDispatcher$MarshallerAdapter.objectFromByteBuffer(RpcDispatcher.java:138)
at
org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:557)
at
org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:368)
at
org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:775)
at org.jgroups.JChannel.up(JChannel.java:1274)
at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:462)
at org.jgroups.protocols.pbcast.FLUSH.up(FLUSH.java:377)
at
org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:144)
at org.jgroups.protocols.FRAG2.up(FRAG2.java:192)
at org.jgroups.protocols.FC.up(FC.java:468)
at org.jgroups.protocols.pbcast.GMS.up(GMS.java:796)
at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:233)
at
org.jgroups.protocols.UNICAST.handleDataReceived(UNICAST.java:616)
at org.jgroups.protocols.UNICAST.up(UNICAST.java:282)
at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:747)
at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:167)
at org.jgroups.protocols.FD.up(FD.java:284)
at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:308)
at org.jgroups.protocols.MERGE2.up(MERGE2.java:144)
at org.jgroups.protocols.Discovery.up(Discovery.java:263)
at org.jgroups.protocols.PING.up(PING.java:270)
at org.jgroups.protocols.TP$ProtocolAdapter.up(TP.java:2319)
at org.jgroups.protocols.TP.passMessageUp(TP.java:1253)
at org.jgroups.protocols.TP.access$100(TP.java:49)
at
org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1830)
at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1809)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
--
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat
14 years, 8 months
Configuration question
by Bela Ban
In mod-cluster-jboss-beans.xml, there's
* stickySession
* stickySessionForce
* stickySessionRemove
* maxAttempts
* workerTimeout
I know the first 2. Can you explain the others ? Even better: could we
have a short comment as to what these props do in the configuration XML
file ?
--
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat
14 years, 8 months
Beta 3
by Bela Ban
Paul,
can you create a Beta3 in JIRA ? I created modcluster-30 and fixed it,
but under beta2..
--
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat
14 years, 8 months
