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Re: [Wrapper-user] Non-console application shutdown
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From: Leif M. <le...@ta...> - 2005-11-04 11:54:11
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Richard,
I am pretty sure the logout events are only generated by the local
user who is
physically logged into the machine. I don't think it works the same for
remote
terminals. Don't have a remote accessible system immediately available
to test
with however.
Cheers,
Leif
Richard Emberson wrote:
>
> On one of our windows machines the application is currently runing (a
> nightly build
> and run test). So I ssh in and tail the wraper log, then I vpn in
> logging in as a windows
> user. Then I log out and I do not see the message: "User logged out.
> Ignored."; there
> is nothing in the log indicating that I had logged out.
>
> How do I generate the user logout event on a windows machine (I'm
> rather Linux
> oriented)?
>
> Thanks
>
> Richard
>
> Leif Mortenson wrote:
>
>> Also what is happening while this is running? Are there user
>> accounts being logged in
>> and out?
>>
>> Cheers,
>> Leif
>>
>> Richard Emberson wrote:
>>
>>> The wrapper is being run as a service.
>>>
>>> The following is in the log file:
>>>
>>> INFO | jvm 5 | 2005/10/31 14:32:26 | [java] [Thr 4336] RFC
>>> Instrument: cosaccepttp reset uuid INFO | wrapper |
>>> 2005/10/31 14:37:19 | User logged out. Ignored.
>>> INFO | wrapper | 2005/10/31 14:37:19 | User logged out. Ignored.
>>> INFO | jvm 5 | 2005/10/31 14:37:20 | [java] Shutting down
>>> INFO | jvm 5 | 2005/10/31 14:37:20 | [java] Shutdown
>>> complete INFO | jvm 5 | 2005/10/31 14:37:20 |
>>> [java] Halting VM
>>> INFO | wrapper | 2005/10/31 14:37:20 | User logged out.
>>> Ignored. INFO | wrapper | 2005/10/31 14:37:20 | User
>>> logged out. Ignored.
>>> INFO | jvm 5 | 2005/10/31 14:38:23
>>> | INFO | jvm 5 |
>>> 2005/10/31 14:38:23 | BUILD SUCCESSFUL
>>> INFO | jvm 5 | 2005/10/31 14:38:23 | Total time: 5,938 minutes
>>> 26 seconds ERROR | wrapper | 2005/10/31 14:38:24 | JVM exited
>>> unexpectedly.
>>> STATUS | wrapper | 2005/10/31 14:40:01 | Launching a
>>> JVM... INFO | jvm 6 | 2005/10/31 14:40:02 |
>>> Wrapper (Version 3.1.2) http://wrapper.tanukisoftware.org
>>> INFO | jvm 6 | 2005/10/31 14:40:02 | The first line
>>> is normal output from the application.
>>> The lines containing: "Shutting down", "Shutdown complete" and
>>> "Halting VM"
>>> are all being printed in the JBoss Shutdown Hook.
>>> The timing of the entries I would assume imply that they are all
>>> related, related
>>> to the user logout event. Something called System.exit() in the
>>> JBoss process -
>>> something triggered by the logout event - but how can that be if the
>>> wrapper
>>> is handling the event (as a code walkthru seems to indicate).
>>>
>>> Richard
>>> Leif Mortenson wrote:
>>>
>>>> Richard,
>>>> The "User logged out. Ignored." Messages show up when the
>>>> Wrapper is being run as
>>>> a service and an actual user who is logged in logs out to the
>>>> Windows login screen. The
>>>> service stays running in the background. This message is there to
>>>> help record the timing
>>>> of that event.
>>>> The message is displayed in response to a LOGOUT signal being
>>>> received from the
>>>> OS. Some Windows versions sent multiple signals, thus the
>>>> duplicate messages. It
>>>> is nothing to worry about and unrelated to shutdown.
>>>>
>>>> In this case, is what is happening is that your JBoss
>>>> application is calling System.exit
>>>> as it shuts down. Normally, this would cause the Wrapper to exit
>>>> as the application
>>>> had completed normally. When System.exit is called, the Java
>>>> executes all registered
>>>> shutdown hooks. The Wrapper registers such a shutdown hook to
>>>> handle the smooth
>>>> shutdown of the JVM.
>>>> The problem is that in your case, you have specifically disabled
>>>> the shutdown hooks.
>>>> When this is done, the Wrapper's shutdown hook is not run and the
>>>> Wrapper process
>>>> has no way of telling if the JVM crashed or shutdown
>>>> intentionally. So it states that
>>>> fact, assumes a crash and restarts the JVM.
>>>> Take a look at this page:
>>>> http://wrapper.tanukisoftware.org/doc/english/prop-disable-shutdown-hook.html
>>>>
>>>>
>>>> From your last sentence, it sounds like you are not expecting
>>>> the Java application
>>>> to be exiting? But that conflicts with what I am seeing in the
>>>> log file? Are you asking
>>>> why JBoss is shutting down in the first place?
>>>>
>>>> If you rerun your application with wrapper.debug=true then I can
>>>> tell you exactly
>>>> what is initiating the JVM shutdown (If it is being done by the
>>>> Wrapper). But I am
>>>> pretty sure your app is calling System.exit. Just not sure what is
>>>> initiating that.
>>>>
>>>> Cheers,
>>>> Leif
>>>>
>>>> Richard Emberson wrote:
>>>>
>>>>> I have the following in a wrapper log:
>>>>>
>>>>> INFO | wrapper | 2005/10/31 14:37:19 | User logged out. Ignored.
>>>>> INFO | wrapper | 2005/10/31 14:37:19 | User logged out.
>>>>> Ignored. INFO | jvm 5 | 2005/10/31 14:37:20 |
>>>>> [java] Shutting down
>>>>> INFO | jvm 5 | 2005/10/31 14:37:20 | [java] Shutdown
>>>>> complete INFO | jvm 5 | 2005/10/31 14:37:20 | [java]
>>>>> Halting VM
>>>>> INFO | wrapper | 2005/10/31 14:37:20 | User logged out.
>>>>> Ignored. INFO | wrapper | 2005/10/31 14:37:20 | User
>>>>> logged out. Ignored.
>>>>> INFO | jvm 5 | 2005/10/31 14:38:23
>>>>> | INFO | jvm 5 | 2005/10/31
>>>>> 14:38:23 | BUILD SUCCESSFUL
>>>>> INFO | jvm 5 | 2005/10/31 14:38:23 | Total time: 5,938
>>>>> minutes 26
>>>>> seconds
>>>>>
>>>>> ERROR | wrapper | 2005/10/31 14:38:24 | JVM exited unexpectedly.
>>>>> STATUS | wrapper | 2005/10/31 14:40:01 | Launching a
>>>>> JVM... INFO | jvm 6 | 2005/10/31 14:40:02 |
>>>>> Wrapper (Version 3.1.2) http://wrapper.tanukisoftware.org
>>>>>
>>>>> The line "Shutting down", "Sutdown complete" and "Halting VM" are
>>>>> being printed
>>>>> to standard out by a Shutdown Hook registered by JBoss, the
>>>>> application being
>>>>> controled by the wrapper.
>>>>>
>>>>> The "User logged out. Ignored" indicates that the wrapper is not
>>>>> being run in a
>>>>> console (looking at the source code) and when ignored, the wrapper
>>>>> does not
>>>>> kill its application. The wrapper then gones on to restart the
>>>>> application.
>>>>>
>>>>> Don't think its relevant, but:
>>>>> wrapper.disable_shutdown_hook=TRUE
>>>>>
>>>>> Why would there be multiple "User logged out. Ignored" lines?
>>>>>
>>>>> Any hints as to what mechanism(s) might lead to the wrapped
>>>>> application
>>>>> to stop?
>>>>>
>>>>> Thanks.
>>>>>
>>>>> Richard
>>>>>
>>>>
>>>>
>>>>
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>>>
>>>
>>
>>
>>
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