Record approx disk usage for 45 roles (to iiab.ini)

roles/nginx/tasks/install.yml

@@ -1,3 +1,8 @@
+- name: Record (initial) available disk space
+  shell: df -PB1 $(findmnt / -o SOURCE -n) | awk 'NR==2 {print $4}'
+  register: df1
+
+
 - name: Stop & Disable '{{ apache_service }}' systemd service, in case it exists
   systemd:
     name: "{{ apache_service }}"    # apache2 or httpd, per /opt/iiab/iiab/vars/<OS>.yml
@@ -66,6 +71,17 @@
 
 # RECORD NGINX AS INSTALLED
 
+- name: Record (final) available disk space
+  shell: df -PB1 $(findmnt / -o SOURCE -n) | awk 'NR==2 {print $4}'
+  register: df2
+
+- name: Add 'nginx_disk_usage = {{ df1.stdout|int - df2.stdout|int }}' to {{ iiab_ini_file }}
+  ini_file:
+    path: "{{ iiab_ini_file }}"    # /etc/iiab/iiab.ini
+    section: nginx
+    option: nginx_disk_usage
+    value: "{{ df1.stdout|int - df2.stdout|int }}"
+
 - name: "Set 'nginx_installed: True'"
   set_fact:
     nginx_installed: True