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From Ofer Israeli <of...@checkpoint.com>
Subject Tomcat with mod_jk becomes irresponsive after working for awhile
Date Wed, 22 Feb 2012 19:02:35 GMT
All,

I have a deployment on Windows 2003 Server using Apache 2.2.16, Tomcat 5.5.30 and mod_jk 1.2.31.
 Apache and Tomcat reside on the same machine.  The communication is fine for days / weeks,
but at some point all requests to the server (to Apache) that use mod_jk return HTTP 503.

The error that shows up in mod_jk.log is:
[Mon Feb 20 12:07:01.464 2012] [7280:6912] [error] ajp_send_request::jk_ajp_common.c (1610):
(all) failed sending request on a fresh connection (recoverable), socket -1 (errno=54)
[Mon Feb 20 12:07:01.464 2012] [7280:6912] [error] ajp_service::jk_ajp_common.c (2562): (all)
connecting to tomcat failed.

I've done a packet capture and I see that Apache initiates the 3-way handshake with Tomcat
which looks fine and immediately after the connection is established, Tomcat sends a FIN packet
to Apache whereby both sides gracefully close the connection.

Have any of you encountered this before?

Do you have any idea what debug logs I can turn on to get further information without bringing
down the server so that we don't loose this situation?


Many thanks,
Ofer

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