services playbook now also setups node_exporter on hosts

services.yml

@@ -1,7 +1,13 @@
+- hosts: supernodes:mapservers
+  become: yes
+  roles:
+    - service-nginx
+    - service-node_exporter
+
 - hosts: serviceservers
   become: yes
   roles:
     - service-nginx
     - service-gogs
     - service-wiki
-    - service-prometheus
+    - service-prometheus