Apache optimization for PHP FPM

README.md

+# Optimize configuration for Apache and PHP FPM
+
+Credit: [@sbuckpesch](https://medium.com/@sbuckpesch/apache2-and-php-fpm-performance-optimization-step-by-step-guide-1bfecf161534)
+
+Run `ps_mem.py` on you host and collect the values for apache and php-fpm processes.
+
+The, download the [apache_performance.xlsx](apache_performance.xlsx) spreadsheet, fill in the orange fields for your specific server and configure the green calculated values into the Ansible inventory for your host:
+
+```
+apache_mpm_prefork:
+  startservers: 40
+  serverlimit: 11267
+  minspareservers: 5
+  maxspareservers: 10
+  maxrequestworkers: 11267
+  maxconnectionsperchild: 0
+
+php_fpm_max_children: 3338
+php_fpm_start_servers: 160
+php_fpm_min_spare_servers: 80
+php_fpm_max_spare_servers: 160
+php_fpm_max_requests: 20000
+```
+
+Then roll-out the configuration to the host.

tasks/apache.yml

@@ -52,6 +52,20 @@
   notify:
     - Restart Apache
 
+- name: Configure Modules
+  template:
+    src: etc-apache2-mods-available-{{ item }}.conf.jinja2
+    dest: /etc/apache2/mods-available/{{ item }}.conf
+    owner: root
+    group: root
+    mode: 0644
+  with_items:
+    - mpm_prefork
+  notify:
+    - Restart Apache
+  tags:
+    - ApacheConfig
+
 - name: Configure Security, Global Redirect, Global Deny, Logging
   template:
     src: etc-apache2-conf-available-{{item }}

templates/etc-apache2-mods-available-mpm_prefork.conf.jinja2

+# prefork MPM
+# StartServers: number of server processes to start
+# MinSpareServers: minimum number of server processes which are kept spare
+# MaxSpareServers: maximum number of server processes which are kept spare
+# MaxRequestWorkers: maximum number of server processes allowed to start
+# MaxConnectionsPerChild: maximum number of requests a server process serves
+
+{% if apache_mpm_prefork is defined %}
+<IfModule mpm_prefork_module>
+  StartServers {{ apache_mpm_prefork.startservers }}
+  ServerLimit {{ apache_mpm_prefork.serverlimit }}
+  MinSpareServers {{ apache_mpm_prefork.minspareservers }}
+  MaxSpareServers {{ apache_mpm_prefork.maxspareservers }}
+  MaxRequestWorkers {{ apache_mpm_prefork.maxrequestworkers }}
+  MaxConnectionsPerChild {{ apache_mpm_prefork.maxconnectionsperchild }}
+</IfModule>
+{% endif %}
+
+# vim: syntax=apache ts=4 sw=4 sts=4 sr noet