Upgrading to Apache 2.4

Recently, Apache has released version 2.4 and right after I did the upgrade, apache stopped working. It said :

httpd: Syntax error on line 153 of /etc/httpd/conf/httpd.conf: Cannot load modules/mod_authn_alias.so into server:
 /etc/httpd/modules/mod_authn_alias.so: cannot open shared object file: No such file or directory

And it kept bugging me. I tried to install this whatever mod_authn_default, but couldn’t find a clue how to do it. So I tried to comment the corresponsing line in httpd.conf byt ended up more errors in other modules.

I was mistaken. I couldn’t use the new .conf file after upgrading. Then I renamed httpd.conf.pacnew as httpd.conf and did the needed changes as in my previous post.

$ sudo mv /etc/httpd/conf/httpd.conf.pacnew /etc/httpd/conf/httpd.conf

But then, I got this fancy error when starting httpd.

Apache is running a threaded MPM, but your PHP Module is not compiled to be threadsafe.  You need to recompile PHP.

I was like, “Whaaaaaaaatttt??? “. But after going through some posts regarding this on few forums, I figured it out. You can read more about it from here.

So first, I installed php-fpm using pacman.

$ sudo pacman -S php-fpm

And uncommented following lines in httpd.conf. (In my case, they were already uncommented.)

LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so

Then edited php-frm.conf

by :

$ sudo nano /etc/php/php-fpm.conf

and changed the listening option

from :

listen = /run/php-fpm/php-fpm.sock


listen =

Both lines were there and I just had to comment one and uncomment the other.

Then I enabled and started the php-fpm service.

$ sudo systemctl enable php-fpm
$ sudo systemctl start php-fpm

Then I added the following line into httpd.conf which does the magic trick. If you have separate vhosts, add this to the needed ones.

ProxyPassMatch ^/(.*\.php(/.*)?)$ fcgi://$1

At last, open httpd.conf and look for

LoadModule mpm_event_module modules/mod_mpm_event.so

and replace it with

LoadModule mpm_prefork_module modules/mod_mpm_prefork.so

Now you’re done..!! You can use PHP peacfully in new Apache. But you still may encounter problems in phpMyAdmin.

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