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From Ron Scruggs <>
Subject [users@httpd] httpd.conf maximum length / content
Date Thu, 23 May 2013 12:55:29 GMT
Hello, all

We are running Apache 2.2.24 on AIX 7.1 with the following compile/build options:

Server version: Apache/2.2.24 (Unix)
Server built:   Mar 12 2013 09:46:50
Server's Module Magic Number: 20051115:31
Server loaded:  APR 1.4.6, APR-Util 1.4.1
Compiled using: APR 1.4.6, APR-Util 1.4.1
Architecture:   64-bit
Server MPM:     Prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D HTTPD_ROOT="/opt/apache"
 -D SUEXEC_BIN="/opt/apache/bin/suexec"
 -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"

We are running a large hosted environment with a total of 430 websites that we are incorporating
as named virtual hosts in the apache config file.  Each site has a varying amount of content
in their config file and may or may not have includes.  We have found that at around 260-270
sites, apache will no longer start - it runs through the syntax check and then dies.  We found
that running the apachectl -t would cause a memory fault core dump until we removed the ulimits
for stack, rss and data for the root and apache user ID, but this did not fix the silent death
when doing an apachectl -k start.  

My question is this:  is there a documented maximum size to the httpd.conf file or maximum
number of config directives that apache can handle?  Is this configurable during the build

Thank you,

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