How to change the server MPM from event to worker on Apache 2.4.2

kumartnj · 03-11-2014, 03:59 AM

Hi All,

I need a help from anyone !!

We are using apache 2.4.2 and this apache is download/installed from source.

I want to know how to change the server MPM from event to worker in RHEL 5.8. I mean, In which file do we need to change this settings?

Below is the current output in my server:

Server version: Apache/2.4.2 (Unix)
Server built: Jul 29 2012 19:12:37
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: event

Thanks in Advance !

- Kumar

bathory · 03-11-2014, 05:34 AM

Hi,

You need to comment out the mpm_event_module loading and uncomment the mpm_worker_module from httpd.conf:

Code:

#LoadModule mpm_event_module modules/mod_mpm_event.so
LoadModule mpm_worker_module modules/mod_mpm_worker.so

Also make sure that you include in httpd.conf the file httpd-mpm.conf

Regards

kumartnj · 03-11-2014, 05:43 AM

Hi,

Thanks for your reply !

Also, need to check one more thing - If its need to change the server MPM for prefork, How it could be changed ?

Its same like do we have module.so for prefork on httpd.conf file.

bathory · 03-11-2014, 05:55 AM

Quote:

Originally Posted by kumartnj

Hi,

Thanks for your reply !

Also, need to check one more thing - If its need to change the server MPM for prefork, How it could be changed ?

Its same like do we have module.so for prefork on httpd.conf file.

Yes, it's the same, (assuming that you have compiled all MPMs as modules):

Code:

LoadModule mpm_prefork_module modules/mod_mpm_prefork.so

kumartnj · 03-11-2014, 06:49 AM

Hi,

I couldn't see this modules in my httpd.conf file. Do I need to load these modules ?

- mod_mpm_event.so
- mod_mpm_worker.so
- mod_mpm_prefork.so

Thanks.

bathory · 03-11-2014, 07:27 AM

Quote:

I couldn't see this modules in my httpd.conf file. Do I need to load these modules ?

- mod_mpm_event.so
- mod_mpm_worker.so
- mod_mpm_prefork.so

You need to load only one of them, depending on the mpm you want to use.
If you can't find these files under the modules/ subdirectory, chances are that you have compiled mpm_event as static and built-in apache.