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apache 2.4 + mpm_itk = prefork?
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kutte128
Apprentice
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Joined: 18 May 2004
Posts: 173

PostPosted: Wed Mar 30, 2016 1:32 pm    Post subject: apache 2.4 + mpm_itk = prefork? Reply with quote

Hi

i'd like to tryout the mpm_itk with apache 2.4. I emerged apache, mpm_itk and put -D MPM_ITK on the APACHE2_OPTS line.
I assigned a AssignUserID on a vhost and restarted the server. It seems to work just fine, apache opens a process as the configured user.

2 things confuse me:
When i check which MPM is loaded, it shows me this:
Code:

 apache2 -l
Compiled in modules:
  core.c
  mod_so.c
  http_core.c
  prefork.c


in /modules.d/00_mpm.conf only the mpm_prefork_module settings are recognised not the ones in the mpm_itk_module section.

and apache -V:
Code:
Server version: Apache/2.4.18 (Unix)
Server built:   Mar 30 2016 12:49:04
Server's Module Magic Number: 20120211:52
Server loaded:  APR 1.5.2, APR-UTIL 1.5.4
Compiled using: APR 1.5.2, APR-UTIL 1.5.4
Architecture:   64-bit
Server MPM:     prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_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=256
 -D HTTPD_ROOT="/usr"
 -D SUEXEC_BIN="/usr/sbin/suexec"
 -D DEFAULT_PIDLOG="/var/run/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="/etc/apache2/mime.types"
 -D SERVER_CONFIG_FILE="/etc/apache2/httpd.conf"


Is this a normal behavior or did i miss something?

regards,
kutte128
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acmondor
n00b
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Joined: 08 Aug 2014
Posts: 35
Location: Canadian Prairies

PostPosted: Fri Apr 01, 2016 3:43 pm    Post subject: Reply with quote

I did the same thing as you and see the same results. However, I did confirm that mpm_itk is there in a few ways:

Quote:
# lsof -p 2726 | grep -i itk
apache2 2726 root mem REG 8,3 22944 5112102 /usr/lib64/apache2/modules/mpm_itk.so

# apache2 -D MPM_ITK -L | grep -i itk
AssignUserID (mpm_itk.c)
AssignUserIDExpr (mpm_itk.c)
AssignGroupIDExpr (mpm_itk.c)
LimitUIDRange (mpm_itk.c)
LimitGIDRange (mpm_itk.c)
EnableCapabilities (mpm_itk.c)
MaxClientsVHost (mpm_itk.c)
NiceValue (mpm_itk.c)

# apache2 -D MPM_ITK -M | grep -i itk
mpm_itk_module (shared)
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