Problems setting up worker MPM

Question

Can't get MPM Worker to work..

I've installed the php-zts package, uncommented #HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd and restarted the httpd service.

the httpd printout:

[root@web06 ~]# httpd -V Server version: Apache/2.2.3 Server built: Sep 3 2009 17:38:51 Server's Module Magic Number: 20051115:3 Server loaded: APR 1.2.7, APR-Util 1.2.7 Compiled using: APR 1.2.7, APR-Util 1.2.7 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_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=128 -D HTTPD_ROOT="/etc/httpd" -D SUEXEC_BIN="/usr/sbin/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" 

the Apache:

[root@web06 ~]# apachectl -v Server version: Apache/2.2.3 Server built: Sep 3 2009 17:41:45 [root@web06 ~]# apachectl -l Compiled in modules: core.c worker.c http_core.c mod_so.c 

Server's details:

Linux web 2.6.18-164.15.1.el5PAE #1 SMP Wed Mar 17 12:14:29 EDT 2010 i686 i686 i386 GNU/Linux 

How come the https still works in prefork mode?

I feel I miss something really basic..

Thanks!

EDIT 1

[root@web06 ~]# ps -ef | grep httpd apache 4366 14700 0 05:44 ? 00:00:34 /usr/sbin/httpd apache 9239 14700 0 06:07 ? 00:00:22 /usr/sbin/httpd apache 9260 14700 0 06:07 ? 00:00:23 /usr/sbin/httpd apache 9271 14700 0 06:07 ? 00:00:23 /usr/sbin/httpd apache 9288 14700 0 06:07 ? 00:00:22 /usr/sbin/httpd apache 9337 14700 0 06:07 ? 00:00:23 /usr/sbin/httpd root 14700 1 0 Aug08 ? 00:00:00 /usr/sbin/httpd apache 14702 14700 0 Aug08 ? 00:00:00 /usr/sbin/httpd apache 22445 14700 0 06:57 ? 00:00:04 /usr/sbin/httpd apache 22480 14700 0 06:57 ? 00:00:04 /usr/sbin/httpd apache 27910 14700 0 07:10 ? 00:00:00 /usr/sbin/httpd apache 27917 14700 0 07:10 ? 00:00:00 /usr/sbin/httpd root 27948 9898 0 07:11 pts/2 00:00:00 grep httpd 

EDIT 2

[root@web06 ~]# ls -l /usr/sbin/httpd* -rwxr-xr-x 1 root root 315284 Sep 3 2009 /usr/sbin/httpd -rwxr-xr-x 1 root root 327708 Sep 3 2009 /usr/sbin/httpd.event -rwxr-xr-x 1 root root 327708 Sep 3 2009 /usr/sbin/httpd.worker [root@web06 ~]# cat /var/log/httpd/error_log [Thu Aug 09 07:26:14 2012] [notice] SELinux policy enabled; httpd running as context root:system_r:httpd_t [Thu Aug 09 07:26:14 2012] [notice] Digest: generating secret for digest authentication ... [Thu Aug 09 07:26:14 2012] [notice] Digest: done [Thu Aug 09 07:26:14 2012] [notice] mod_python: Creating 4 session mutexes based on 6 max processes and 25 max threads. [Thu Aug 09 07:26:14 2012] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations 

EDIT 3

[root@web06 conf]# grep '/etc/sysconfig/httpd' /etc/init.d/httpd # config: /etc/sysconfig/httpd if [ -f /etc/sysconfig/httpd ]; then . /etc/sysconfig/httpd # Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server 

EDIT 4

Output of sh -x /etc/init.d/httpd start > /tmp/apache.debug 2>&1

EDIT 5

After running the commands by @quanta:

[root@web06 ~]# ps -ef | grep httpd root 16303 1 0 08:29 ? 00:00:00 /usr/sbin/httpd.worker apache 16305 16303 2 08:29 ? 00:00:37 /usr/sbin/httpd.worker apache 16307 16303 2 08:29 ? 00:00:35 /usr/sbin/httpd.worker root 20415 20381 0 08:56 pts/1 00:00:00 grep httpd 

Answer 1

Don't know why the first check ps -ef | grep httpd still shows /usr/sbin/httpd but since I see the belows in the debug:

+ /bin/bash -c 'ulimit -S -c 0 >/dev/null 2>&1 ; /usr/sbin/httpd.worker' ... + success 'httpd.worker startup' 

I'm pretty sure that your Apache is running in worker mode, and the second check prove that:

[root@web06 ~]# ps -ef | grep [h]ttpd root 16303 1 0 08:29 ? 00:00:00 /usr/sbin/httpd.worker apache 16305 16303 2 08:29 ? 00:00:37 /usr/sbin/httpd.worker apache 16307 16303 2 08:29 ? 00:00:35 /usr/sbin/httpd.worker 

DON'T use httpd -V to check the mode which Apache is running in, because:

# which httpd /usr/sbin/httpd 

Use apachectl -V (uppercase) instead:

Server version: Apache/2.2.3 Server built: Oct 20 2011 17:03:44 Server's Module Magic Number: 20051115:3 Server loaded: APR 1.2.7, APR-Util 1.2.7 Compiled using: APR 1.2.7, APR-Util 1.2.7 Architecture: 64-bit Server MPM: Worker threaded: yes (fixed thread count) forked: yes (variable process count) Server compiled with.... -D APACHE_MPM_DIR="server/mpm/worker" -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=128 -D HTTPD_ROOT="/etc/httpd" -D SUEXEC_BIN="/usr/sbin/suexec" -D DEFAULT_SCOREBOARD="logs/apache_runtime_status" -D DEFAULT_ERRORLOG="logs/error_log" -D AP_TYPES_CONFIG_FILE="conf/mime.types" -D SERVER_CONFIG_FILE="conf/httpd.conf" 

or /server-info:

$ lynx -dump http://yourdomain.com/server-info | grep -i mpm MPM Name: Worker MPM Information: Max Daemons: 1 Threaded: yes Forked: yes Server Built With: -D APACHE_MPM_DIR="server/mpm/prefork" -D AcceptMutex - Valid accept mutexes for this platform and MPM