diff --git a/apps/drupal/admin_basic_auth.conf b/apps/drupal/admin_basic_auth.conf
index cc796ce0..50381944 100644
--- a/apps/drupal/admin_basic_auth.conf
+++ b/apps/drupal/admin_basic_auth.conf
@@ -8,5 +8,5 @@ location ^~ /admin {
     ## Include the specific FastCGI configuration. This is for a
     ## FCGI backend like php-cgi or php-fpm.
     include apps/drupal/fastcgi_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 }
diff --git a/apps/drupal/drupal.conf b/apps/drupal/drupal.conf
index 71578b3c..8619999e 100644
--- a/apps/drupal/drupal.conf
+++ b/apps/drupal/drupal.conf
@@ -26,7 +26,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the two lines below.
@@ -50,7 +50,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the two lines below.
@@ -199,7 +199,7 @@ location / {
             ## Include the specific FastCGI configuration. This is for a
             ## FCGI backend like php-cgi or php-fpm.
             include apps/drupal/fastcgi_drupal.conf;
-            fastcgi_pass phpcgi;
+            fastcgi_pass $custom_upstream;
 
             ## If proxying to apache comment the two lines above and
             ## uncomment the two lines below.
@@ -232,7 +232,7 @@ location / {
 location @drupal {
     ## Include the FastCGI config.
     include apps/drupal/fastcgi_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FastCGI microcache.
     include apps/drupal/microcache_fcgi.conf;
@@ -259,7 +259,7 @@ location @drupal-no-args {
     ## Include the specific FastCGI configuration. This is for a
     ## FCGI backend like php-cgi or php-fpm.
     include apps/drupal/fastcgi_no_args_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FastCGI microcache.
     include apps/drupal/microcache_fcgi.conf;
diff --git a/apps/drupal/drupal_boost.conf b/apps/drupal/drupal_boost.conf
index 4a0053d3..093bf2e3 100644
--- a/apps/drupal/drupal_boost.conf
+++ b/apps/drupal/drupal_boost.conf
@@ -26,7 +26,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -50,7 +50,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -192,7 +192,7 @@ location / {
             ## Include the specific FastCGI configuration. This is for a
             ## FCGI backend like php-cgi or php-fpm.
             include apps/drupal/fastcgi_drupal.conf;
-            fastcgi_pass phpcgi;
+            fastcgi_pass $custom_upstream;
 
             ## If proxying to apache comment the two lines above and
             ## uncomment the line below.
@@ -263,7 +263,7 @@ location @cache {
 location @drupal {
     ## Include the FastCGI config.
     include apps/drupal/fastcgi_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FCGI microcache for authenticated users also.
     include apps/drupal/microcache_fcgi_auth.conf;
@@ -285,7 +285,7 @@ location @drupal-no-args {
     ## Include the specific FastCGI configuration. This is for a
     ## FCGI backend like php-cgi or php-fpm.
     include apps/drupal/fastcgi_no_args_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FCGI microcache for authenticated users also.
     include apps/drupal/microcache_fcgi_auth.conf;
@@ -369,7 +369,7 @@ location ~* ^.+\.php$ {
 
 ## Boost stats.
 location = /boost_stats.php {
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     ## To use Apache for serving PHP uncomment the line bellow and
     ## comment out the above.
     #proxy_pass http://phpapache;
diff --git a/apps/drupal/drupal_boost_escaped.conf b/apps/drupal/drupal_boost_escaped.conf
index 68996ab5..3a4cc209 100644
--- a/apps/drupal/drupal_boost_escaped.conf
+++ b/apps/drupal/drupal_boost_escaped.conf
@@ -29,7 +29,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -53,7 +53,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -195,7 +195,7 @@ location / {
             ## Include the specific FastCGI configuration. This is for a
             ## FCGI backend like php-cgi or php-fpm.
             include apps/drupal/fastcgi_drupal.conf;
-            fastcgi_pass phpcgi;
+            fastcgi_pass $custom_upstream;
 
             ## If proxying to apache comment the two lines above and
             ## uncomment the line below.
@@ -267,7 +267,7 @@ location @cache {
 location @drupal {
     ## Include the FastCGI config.
     include apps/drupal/fastcgi_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FCGI microcache for authenticated users also.
     include apps/drupal/microcache_fcgi_auth.conf;
@@ -289,7 +289,7 @@ location @drupal-no-args {
     ## Include the specific FastCGI configuration. This is for a
     ## FCGI backend like php-cgi or php-fpm.
     include apps/drupal/fastcgi_no_args_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FCGI microcache for authenticated users also.
     include apps/drupal/microcache_fcgi_auth.conf;
@@ -373,7 +373,7 @@ location ~* ^.+\.php$ {
 
 ## Boost stats.
 location = /boost_stats.php {
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     ## To use Apache for serving PHP uncomment the line bellow and
     ## comment out the above.
     #proxy_pass http://phpapache;
diff --git a/apps/drupal/drupal_cron_update.conf b/apps/drupal/drupal_cron_update.conf
index 55500e97..ff890438 100644
--- a/apps/drupal/drupal_cron_update.conf
+++ b/apps/drupal/drupal_cron_update.conf
@@ -3,7 +3,7 @@
 
 ## XMLRPC. Comment out if not enabled.
 location = /xmlrpc.php {
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     # To use Apache for serving PHP uncomment the line bellow and
     # comment out the above.
     #proxy_pass http://phpapache;
@@ -16,7 +16,7 @@ location = /cron.php {
     if ($not_allowed_cron) {
         return 404 /;
     }
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     ## To use Apache for serving PHP uncomment the line bellow and
     ## comment out the above.
     #proxy_pass http://phpapache;
@@ -24,7 +24,7 @@ location = /cron.php {
 
 ## Run the update from the web interface with Drupal 7.
 location = /authorize.php {
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     ## To use Apache for serving PHP uncomment the line bellow and
     ## comment out the above.
     #proxy_pass http://phpapache;
@@ -33,7 +33,7 @@ location = /authorize.php {
 location = /update.php {
     auth_basic "Restricted Access"; # auth realm
     auth_basic_user_file .htpasswd-users; # htpasswd file
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     ## To use Apache for serving PHP uncomment the line bellow and
     ## comment out the above.
     #proxy_pass http://phpapache;
diff --git a/apps/drupal/drupal_escaped.conf b/apps/drupal/drupal_escaped.conf
index 5cf812a8..0ffdd8b1 100644
--- a/apps/drupal/drupal_escaped.conf
+++ b/apps/drupal/drupal_escaped.conf
@@ -29,7 +29,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -53,7 +53,7 @@ location / {
         ## Include the specific FastCGI configuration. This is for a
         ## FCGI backend like php-cgi or php-fpm.
         include apps/drupal/fastcgi_drupal.conf;
-        fastcgi_pass phpcgi;
+        fastcgi_pass $custom_upstream;
 
         ## If proxying to apache comment the two lines above and
         ## uncomment the line below.
@@ -201,7 +201,7 @@ location / {
             ## Include the specific FastCGI configuration. This is for a
             ## FCGI backend like php-cgi or php-fpm.
             include apps/drupal/fastcgi_drupal.conf;
-            fastcgi_pass phpcgi;
+            fastcgi_pass $custom_upstream;
 
             ## If proxying to apache comment the two lines above and
             ## uncomment the line below.
@@ -233,7 +233,7 @@ location / {
 location @drupal {
     ## Include the FastCGI config.
     include apps/drupal/fastcgi_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FastCGI microcache.
     include apps/drupal/microcache_fcgi.conf;
@@ -259,7 +259,7 @@ location @drupal-no-args {
     ## Include the specific FastCGI configuration. This is for a
     ## FCGI backend like php-cgi or php-fpm.
     include apps/drupal/fastcgi_no_args_drupal.conf;
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 
     ## FastCGI microcache.
     include apps/drupal/microcache_fcgi.conf;
diff --git a/apps/drupal/drupal_install.conf b/apps/drupal/drupal_install.conf
index 1f4f11bf..60078867 100644
--- a/apps/drupal/drupal_install.conf
+++ b/apps/drupal/drupal_install.conf
@@ -5,12 +5,12 @@
 location = /install.php {
     auth_basic "Restricted Access"; # auth realm
     auth_basic_user_file .htpasswd-users; # htpasswd file
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 }
 
 ## This is for drupal 8. There's a new location for the install file.
 location = /core/install.php {
     auth_basic "Restricted Access"; # auth realm
     auth_basic_user_file .htpasswd-users; # htpasswd file
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
 }
diff --git a/php_fpm_status_vhost.conf b/php_fpm_status_vhost.conf
index 55a4b4e9..3d6c8e9c 100644
--- a/php_fpm_status_vhost.conf
+++ b/php_fpm_status_vhost.conf
@@ -64,7 +64,7 @@ location = /fpm-status-drei {
     if ($dont_show_fpm_status) {
         return 404;
     }
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     access_log off;
 }
 
@@ -74,6 +74,6 @@ location = /ping-drei {
     if ($dont_show_fpm_status) {
         return 404;
     }
-    fastcgi_pass phpcgi;
+    fastcgi_pass $custom_upstream;
     access_log off;
 }
diff --git a/sites-available/000-default b/sites-available/000-default
index 59622793..1d1cf3c4 100644
--- a/sites-available/000-default
+++ b/sites-available/000-default
@@ -4,6 +4,9 @@
 ### a suggestion by Maxim Dounin. Also suggested in
 ### http://nginx.org/en/docs/http/request_processing.html#how_to_prevent_undefined_server_names.
 server {
+    ## Set upstream.
+    set $custom_upstream phpcgi;
+
     listen 80 default_server; # IPv4
     ## Socket options can only be specified once, hence the different
     ## address for the 'default' server.
diff --git a/sites-available/example.com.conf b/sites-available/example.com.conf
index 9da0cd24..9b79e8e5 100644
--- a/sites-available/example.com.conf
+++ b/sites-available/example.com.conf
@@ -22,6 +22,7 @@ server {
     listen [fe80::202:b3ff:fe1e:8330]:80 ipv6only=on;
 
     server_name example.com;
+    set $custom_upstream phpcgi_examplecom;
     limit_conn arbeit 32;
 
     ## Access and error logs.
@@ -133,6 +134,7 @@ server {
     ## Uncomment the line below if you're using SPDY.
     #listen [fe80::202:b3ff:fe1e:8329]:443 ssl spdy ipv6only=on;
 
+    set $custom_upstream phpcgi_examplecom;
     server_name www.example.com;
 
     ## Keep alive timeout set to a greater value for SSL/TLS.
@@ -161,6 +163,7 @@ server {
     ## Uncomment the line below if you're using SPDY.
     #listen [fe80::202:b3ff:fe1e:8330]:443 ssl spdy ipv6only=on;
 
+    set $custom_upstream phpcgi_examplecom;
     server_name example.com;
 
     limit_conn arbeit 32;
diff --git a/upstream_phpcgi_unix.conf b/upstream_phpcgi_unix.conf
index ec3a80b2..b2a774c6 100644
--- a/upstream_phpcgi_unix.conf
+++ b/upstream_phpcgi_unix.conf
@@ -23,6 +23,13 @@ upstream phpcgi {
     keepalive 5;
 }
 
+## Demo upstream for example.com vhost
+upstream phpcgi_examplecom {
+  least_conn;
+  server unix:/var/run/php-fpm-examplecom.sock;
+  keepalive 5;
+}
+
 ## Add a third pool as a fallback. Note that this requires php-cgi
 ## side by side php-fpm. If you don't have it installed comment it
 ## out.