Thread Dumps for JBoss AS 7 as Windows Service

[steljboss]

I am trying to take thread dumps for our JBoss 7.1.1 server that is running as a windows service however failing to do so. I have tried

• jstack -l PID --> result is access denied
• visualvm       ---> It does not see the process, even when I have run visualvm with the same user as the JBoss server is running or as LOCAL SYSTEM (Note JMX connection [1] fails [2])
• jconsole       --> Based on [3] I can take a Heap Dump but do not see any operations to take a Thread Dump

The problem is as we are running the JBoss as a window service and it does not manifest itself when we are simply starting the server using the standalone or domain scripts

[1] http://docs.oracle.com/javase/6/docs/technotes/guides/visualvm/jmx_connections.html

[2]

WARNING: Failed to load the specified log manager class org.jboss.logmanager.LogManager
Exception in thread "main" java.lang.ExceptionInInitializerError
 at org.jboss.as.server.Main.main(Main.java:73)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.modules.Module.run(Module.java:260)
 at org.jboss.modules.Main.main(Main.java:291)
Caused by: java.lang.IllegalStateException: The LogManager was not properly installed (you must set the "java.util.logging.manager" system property to "org.jboss.logmanager.LogManager")
 at org.jboss.logmanager.Logger.getLogger(Logger.java:60)
 at org.jboss.logmanager.log4j.BridgeRepositorySelector.<clinit>(BridgeRepositorySelector.java:42)
 ... 7 more

As I set the logmanager it is still not working

[3] https://community.jboss.org/wiki/UsingJconsoleToConnectToJMXOnAS7

[jaikiran]

FWIW, for that exception stacktrace, I don't think thread dumps are going to help. What you have to check is the parameters that are being passed to the Windows service for starting the AS instance and compare it with the standalone instance which doesn't start as a service.

[jaikiran]

By the way, this might help with the thread dumps https://community.jboss.org/wiki/ThreadDumpWhenRunningAsAService

[steljboss]

Hi Jaikiran,

I will try your suggestion and let you know.

The exception above is not what I am trying to debug it is one I get when I try to setup my server to be available over JMX so that I can connect with visualvm to it.

[hgupta]

Hi Jai,

Is JMX console available with JBoss 7?

Link you posted talks about JMX console.

Thanks,

Himanshu

[jaikiran]

Himanshu Gupta wrote:

Hi Jai,

Is JMX console available with JBoss 7?

No it's not available in AS7.

Himanshu Gupta wrote:

Link you posted talks about JMX console.

You are right, it's mentioned as one of the options. I think the wiki needs a update to make a mention that JMX console method isn't applicable for AS7.

[jaikiran]

jaikiran pai wrote:

I think the wiki needs a update to make a mention that JMX console method isn't applicable for AS7.

Wiki updated.

[steljboss]

Just to confirm. there is no known way to take a ThreadDump for the AS 7 when it is running as a service?

I have tried the SendSignal utility but that also failed with privilege errors

[nickarls]

Depending on windows version, you might have to run the utility as administrator.

[steljboss]

Hi Nicklas,

I had tried that way but it was not possible. I am experimenting with this tool now to get monitoring http://www.appdynamics.com/