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From "Zaccone, Warren" <wzacc...@telcordia.com>
Subject [users@httpd] need some thoughts on trouble shooting httpd server hangup
Date Fri, 03 Jun 2011 20:12:58 GMT
Have a problem where httpd server 2.2.15 stops responding to requests requiring server to be
frequently restarted that has me going in circles. I was looking for some direction as to
how to pursue.

there are 8 workers running each consuming very little cpu.     netstat shows process listening
on port 80 and 443.

requests on 443 are served fine, but requests on 80 hang,  Backed out 2.2.15 and went to previous
release I had built (httpd 2.2.11) and problem has gone away.  No other variables changed,
and they were built same way, so I am wondering if there was a change in behavior between
the releases that I have not anticipated or if there is a bug that may have been fixed subsequently.
  I am testing 2.2.19 in my lab without issues, but 2.2.15 is in production so I need to determine
the cause.

the requests are 99% php scripts with a fair number using web services with nusoap.  However
I think the issue may be httpd itself because port 443 works fine, but port 80 does not respond.
 Initially both ports are functioning and over time, (a few hours), requests on port 80 (http)
stop responding but 443 (https) remains fine. restarting httpd fixes it for a few hours.

I appreciate any thoughts or direction.
thank you.
Warren

I compiled it as

  Apache/2.2.15 (Unix) PHP/5.2.14 mod_ssl/2.2.15 OpenSSL/0.9.8o

   apachectl -V
apache bin directory is /usr/local/apache/bin
httpd is /usr/local/apache/bin/httpd
Server version: Apache/2.2.15 (Unix)
Server built:   Jul 22 2010 16:52:18
Server loaded:  APR 1.3.3, APR-Util 1.3.4
Compiled using: APR 1.3.3, APR-Util 1.3.4
Architecture:   32-bit
Server MPM:     Prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_FCNTL_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=128
 -D HTTPD_ROOT="/usr/local/apache"
 -D SUEXEC_BIN="/usr/local/apache/bin/suexec"
 -D DEFAULT_PIDLOG="logs/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="logs/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"
$

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