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Subject: RE: [users@httpd] Apache Hangs when proxying Java Requests with WebLogic Plugin
From: "Richters, Eriks (US - Arlington)" <erichters () deloitte ! com>
Date: 2012-06-20 15:22:22
Message-ID: 61341E336DB93E4798B4DCC862B929DD35D5D117 () USNDC1435 ! us ! deloitte ! com
[Download RAW message or body]
Hello,
Just to follow up on this question, the hanging was resolved by updating th=
e WebLogic Proxy plugin from 1.0 to 1.1. However, the new plugin introduce=
d other issues such as read-only screens in one application, and a re-authe=
ntication prompt issue with another application. We're still working on =
those.
Thanks for the help!
From: Kevin Castellow [mailto:kev.castellow@gmail.com]
Sent: Tuesday, May 15, 2012 9:59 PM
To: users@httpd.apache.org
Subject: Re: [users@httpd] Apache Hangs when proxying Java Requests with We=
bLogic Plugin
Sounds like it has to be configuration problem if other proxies work with s=
ame code. Try testing a working proxy pointing to this Weblogic server. =
It is possible the problem is on the Weblogic side.
Try to copy the configuration from a working server to this server. Here a=
re all parameters for further debugging:
http://docs.oracle.com/cd/E15051_01/wls/docs103/plugins/plugin_params.html#=
wp1143055
On Tue, May 15, 2012 at 1:56 PM, Richters, Eriks (US - Arlington) <erichter=
s@deloitte.com<mailto:erichters@deloitte.com>> wrote:
We had the plugin configured for Debug ALL, as you suggested. Still no sign=
of an error. Apache just stops responding to all requests.
We've also tried to reproduce this issue by pointing the same proxy to diff=
erent WebLogic clusters. Two other cluster's don't exhibit this behavior. =
It's tied to just the one. We're currently combing through configurations=
to check for differences. At a high level, it's the same versions of Wind=
ows, WebLogic, and Java.
Local content in Apache never causes the hang. As does content in the other=
apps that are being proxied.
Thanks for the help!
From: Kevin Castellow [mailto:kev.castellow@gmail.com<mailto:kev.castellow@=
gmail.com>]
Sent: Monday, May 14, 2012 10:22 PM
To: users@httpd.apache.org<mailto:users@httpd.apache.org>
Subject: Re: [users@httpd] Apache Hangs when proxying Java Requests with We=
bLogic Plugin
The weblogic plugin also has option to debug. Have you verified the plugin=
does not show the error?
Add Debug ALL and by default it should log to /tmp directory.
Are you able to serve content in other directories that may have content lo=
cally stored on Apache and that do not trigger plugin?
On Mon, May 14, 2012 at 4:05 PM, Richters, Eriks (US - Arlington) <erichter=
s@deloitte.com<mailto:erichters@deloitte.com>> wrote:
Hello Everyone,
I've run into a problem where Apache Hangs after several requests when prox=
ying some Java based dashboards. Pretty consistently, the dashboard loads =
fine the first four or five times, on the next time Apache is hung. It j=
ust stops responding to all requests, including the standard Apache status =
page. Apache never seems to come back on its own. Only when it's restarte=
d.
The problem only happens with these java-based dashboards. It doesn't han=
g on other content even going out to hundreds of requests.
Apache's logs don't show an error, basically it just stops responding. It =
would seem like it stopped getting requests. I'd love to have an error t=
o search on.
CPU, Memory, IO all seem to be normal like it's not doing anything.
We're running Apache 2.2.21 on Windows Server 2003, with the WebLogic Proxy=
Plugin. The backend server is WebLogic 10.3.3, with Java 1.6.30.
SSL is configured between WebLogic and Apache, but we're not seeing SSL er=
rors.
Does anyone have any suggestions or comments to help resolve this error?
Thank You!
This message (including any attachments) contains confidential information =
intended for a specific individual and purpose, and is
protected by law. If you are not the intended recipient, you should delete =
this message.
Any disclosure, copying, or distribution of this message, or the taking of =
any action based on it, is strictly prohibited.
v.E.1
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<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Just \
to follow up on this question, the hanging was resolved by updating the WebLogic \
Proxy plugin from 1.0 to 1.1. However, the new plugin introduced other issues \
such as read-only screens in one application, and a re-authentication prompt issue \
with another application. We’re still working on \
those.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks \
for the help!<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Kevin \
Castellow [mailto:kev.castellow@gmail.com] <br>
<b>Sent:</b> Tuesday, May 15, 2012 9:59 PM<br>
<b>To:</b> users@httpd.apache.org<br>
<b>Subject:</b> Re: [users@httpd] Apache Hangs when proxying Java Requests with \
WebLogic Plugin<o:p></o:p></span></p> <p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Sounds like it has to be \
configuration problem if other proxies work with same code. Try testing a \
working proxy pointing to this Weblogic server. It is possible the \
problem is on the Weblogic side.<br> Try to copy the configuration from a working \
server to this server. Here are all parameters for further debugging:<br> <a \
href="http://docs.oracle.com/cd/E15051_01/wls/docs103/plugins/plugin_params.html#wp114 \
3055">http://docs.oracle.com/cd/E15051_01/wls/docs103/plugins/plugin_params.html#wp1143055</a><br>
<br>
<br>
<o:p></o:p></p>
<div>
<p class="MsoNormal">On Tue, May 15, 2012 at 1:56 PM, Richters, Eriks (US - \
Arlington) <<a href="mailto:erichters@deloitte.com" \
target="_blank">erichters@deloitte.com</a>> wrote:<o:p></o:p></p> <div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We \
had the plugin configured for Debug ALL, as you suggested. Still no sign of an \
error. Apache just stops responding to all \
requests.</span><o:p></o:p></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We’ve \
also tried to reproduce this issue by pointing the same proxy to different WebLogic \
clusters. Two other cluster’s don’t exhibit this behavior. \
It’s tied to just the one. We’re currently combing through \
configurations to check for differences. At a high level, it’s the same \
versions of Windows, WebLogic, and Java.</span><o:p></o:p></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Local \
content in Apache never causes the hang. As does content in the other apps that are \
being proxied. </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks \
for the help!</span><o:p></o:p></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Kevin \
Castellow [mailto:<a href="mailto:kev.castellow@gmail.com" \
target="_blank">kev.castellow@gmail.com</a>] <br>
<b>Sent:</b> Monday, May 14, 2012 10:22 PM<br>
<b>To:</b> <a href="mailto:users@httpd.apache.org" \
target="_blank">users@httpd.apache.org</a><br> <b>Subject:</b> Re: [users@httpd] \
Apache Hangs when proxying Java Requests with WebLogic Plugin</span><o:p></o:p></p> \
<div> <div>
<p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p> <p \
class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">The weblogic \
plugin also has option to debug. Have you verified the plugin does not show the \
error? <br>
Add Debug ALL and by default it should log to /tmp directory.<br>
Are you able to serve content in other directories that may have content locally \
stored on Apache and that do not trigger plugin?<br> <br>
<br>
<o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On \
Mon, May 14, 2012 at 4:05 PM, Richters, Eriks (US - Arlington) <<a \
href="mailto:erichters@deloitte.com" target="_blank">erichters@deloitte.com</a>> \
wrote:<o:p></o:p></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Hello Everyone,<br> I've run \
into a problem where Apache Hangs after several requests when proxying some Java \
based dashboards. Pretty consistently, the dashboard loads fine the first four \
or five times, on the next time Apache is hung. It just stops responding \
to all requests, including the standard Apache status page. Apache never \
seems to come back on its own. Only when it's restarted.<br> The problem only happens \
with these java-based dashboards. It doesn't hang on other content even going \
out to hundreds of requests.<br> Apache's logs don't show an error, basically it just \
stops responding. It would seem like it stopped getting requests. \
I'd love to have an error to search on.<br> CPU, Memory, IO all seem to be \
normal like it's not doing anything.<br> We're running Apache 2.2.21 on Windows \
Server 2003, with the WebLogic Proxy Plugin. The backend server is \
WebLogic 10.3.3, with Java 1.6.30.<br> SSL is configured between WebLogic \
and Apache, but we're not seeing SSL errors.<br> Does anyone have any suggestions or \
comments to help resolve this error?<br> Thank You!<br>
<br>
<br>
<br>
This message (including any attachments) contains confidential information intended \
for a specific individual and purpose, and is<br> protected by law. If you are not \
the intended recipient, you should delete this message.<br> <br>
Any disclosure, copying, or distribution of this message, or the taking of any action \
based on it, is strictly prohibited.<br> v.E.1<o:p></o:p></p>
</div>
<p class="MsoNormal" \
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p> \
</div> </div>
</div>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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