LAMP on Ubuntu 14.04 with Apache Event MPM

Assuming that you’re starting with a basic LAMP stack, to get Event MPM and PHP-FPM up and running on Ubuntu 14.04 first install these packages:

sudo apt-get install libapache2-mod-fastcgi php5-fpm apache2-mpm-event

Then create the file /etc/apache2/conf-available/php5-fpm.conf with the contents:

<IfModule mod_fastcgi.c>
    AddHandler php5-fcgi .php
    Action php5-fcgi /php5-fcgi
    Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi
    FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -socket /var/run/php5-fpm.sock -pass-header Authorization

    <Directory /usr/lib/cgi-bin>
        Require all granted
    </Directory>

</IfModule>

Then enable the new mods and config:

sudo a2enmod actions fastcgi alias
sudo a2dismod mpm_prefork php5
sudo a2enconf php5-fpm
sudo a2enmod mpm_event
sudo service apache2 restart

You should be all set to go!

Assuming that you’re starting with a basic LAMP stack, to get Event MPM and PHP-FPM up and running on Ubuntu 14.04 first install these packages:

sudo apt-get install libapache2-mod-fastcgi php5-fpm apache2-mpm-event

Then create the file /etc/apache2/conf-available/php5-fpm.conf with the contents:

<IfModule mod_fastcgi.c>
    AddHandler php5-fcgi .php
    Action php5-fcgi /php5-fcgi
    Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi
    FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -socket /var/run/php5-fpm.sock -pass-header Authorization

    <Directory /usr/lib/cgi-bin>
        Require all granted
    </Directory>

</IfModule>

Then enable the new mods and config:

sudo a2enmod actions fastcgi alias
sudo a2dismod mpm_prefork php5
sudo a2enconf php5-fpm
sudo a2enmod mpm_event
sudo service apache2 restart

You should be all set to go!

This was asked a while ago, but for anyone still interested, check out this awesome article …not written by me sadly :)

Hey, what would be the recommended values for the Apache with Event MPM settings, and where is the configuration file to put them in? I didn’t find them (even the defaults) specified in the main apache2.conf.

I know these settings depend mostly on the RAM available to the server, so if I get a recommendation for one droplet size, then I can scale accordingly for other sizes. Here is an example I found online:

<IfModule event.c>
    StartServers          3
    MinSpareThreads      75
    MaxSpareThreads     250 
    ThreadsPerChild      25
    MaxClients          400 // MaxRequestWorkers
    MaxRequestsPerChild   0 // MaxConnectionsPerChild
</IfModule>

As it turns out, PHP-FPM has its own equivalent settings, like pm.max_children, pm.start_servers, pm.min_spare_servers, pm.max_spare_servers, pm.max_requests, etc. Are these use together with the Apache settings, i.e. for dynamic content, or they complement/supercede them? Here’s an example for these (I understand they are specified in the FPM’s php.ini):

pm.max_children = 10
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 5
pm.max_requests = 0

Thanks in advance!

Yuri

Excellent, thank you!