Hi,
How did the results of your monitoring go ? Were you connection/keepalive
timeouts helping ? Are they still set at 10mins ?
Please outline the steps you made if the problem has indeed been resolved.
Thanks
Kris
Guy Cube wrote:
>
> Here are my updates :
>
> Interesting finding is whatever AJP connectors stuck in Keepalive mode for
> long time are for requests coming from remote clients. All connections for
> requests coming from local (internal network) clients were changed to
> CLOSE_WAIT after some time.
>
> Today I tried with keepAliveTimeout and connectionTimeout setting at
> server.xml
>
>
> <Connector port="8009" address="${jboss.bind.address}" protocol="AJP/1.3"
> emptySessionPath="true" enableLookups="false" redirectPort="8443"
> connectionTimeout="300000" keepAliveTimeout="300000" />
>
> I monitored from both JBoss JMX console and netstat. Connectors at JMX
> console stayed at stage 6 (STAGE_KEEPALIVE) for 5 minutes and changed to
> stage 7 (STAGE_ENDED ) after keep alive timeout (5 minutes). But in
> netstat it is still shown up as follows:
>
> netstat -aonp | grep 8009
>
> tcp 0 0 0.0.0.0:8009 0.0.0.0:*
> LISTEN 5229/java off (0.00/0/0)
> tcp 0 0 xx.xx.xx.xxx:8009 yy.yy.yyy.yyy:49771
> ESTABLISHED 25229/java off (0.00/0/0)
> tcp 0 0 xx.xx.xx.xxx:8009 yy.yy.yyy.yyy:49768
> ESTABLISHED 25229/java off (0.00/0/0)
> tcp 0 0 xx.xx.xx.xxx:8009 yy.yy.yyy.yyy:49767
> ESTABLISHED 25229/java off (0.00/0/0)
> tcp 0 0 xx.xx.xx.xxx:8009 yy.yy.yyy.yyy:49766
> ESTABLISHED 25229/java off (0.00/0/0)
> tcp 0 0 xx.xx.xx.xxx:8009 yy.yy.yyy.yyy:49765
> ESTABLISHED 25229/java off (0.00/0/0)
>
> pid 25229 is process id of JBoss. I am running JBoss on CentOS 5.2, Kernel
> 2.6.18-.
>
> I will be monitoring the outcomes tonight.
>
> Regards,
> GC
>
>
>
>
> kvancamp wrote:
>>
>>
>> Guy Cube wrote:
>>>
>>> Hello,
>>>
>>> We are also haveing exact same issue in our environment. We are using
>>> JBoss 4.2.3, Apache 2.2.11 with mod_proxy_ajp using ajp to connect
>>> between Apache and JBoss. It happens intermittently and when i happnes
>>> all AJP's TCP connections are stayed in ESTABLISHED state on JBoss
>>> machine. In thread dump, all AJP threads are in waiting state.
>>>
>>> Anyone found solution or work around for this issue?
>>>
>>> Thanks,
>>> GC
>>>
>>
>> For now I have set the connectionTimeout to 10 minutes on my AJP
>> connection, e.g.
>> <!-- Define an AJP 1.3 Connector on port 8009, timeout in 10 mins.
>> -->
>> <Connector port="8009" address="${jboss.bind.address}"
>> protocol="AJP/1.3"
>> emptySessionPath="true" enableLookups="false"
>> redirectPort="8443"
>> connectionTimeout="600000"
>> />
>>
>> I am monitoring results, it is too soon to tell if this alone will solve
>> the problem or if I also have to delve into my firewall (I was incorrect
>> in my original response above - there IS a firewall between my IIS proxy
>> and my JBoss server, and it has a 1 hour idle tcp session timeout), or my
>> IIS proxy (which is configured with a 5-minute socket timeout).
>>
>> Ken
>>
>
>
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