diff --git a/site.yml b/site.yml
index d98a4d4..51c09d7 100755
--- a/site.yml
+++ b/site.yml
@@ -1,9 +1,22 @@
 #!/usr/bin/env ansible-playbook
 # vim:ft=ansible:
 ---
+  # Preambulatory system configuration
 - hosts: all
   roles:
     - role: common
       tags: [ common ]
     - role: ansible-pull
       tags: [ ansible, common ]
+  # Database servers
+- hosts: db1.test.desu.ltd
+  roles:
+    - role: postgresql
+      tags: [ db, psql ]
+  # Webservers
+- hosts: web1.test.desu.ltd
+  roles:
+    - role: apache
+      tags: [ web, apache ]
+    - role: php
+      tags: [ web, php ]