ensure hosts are on AC power

tasks/ac-power.yaml

@@ -0,0 +1,10 @@
+---
+
+- name: ensure acpi tool is installed
+  apt:
+    pkg: acpi
+- name: ensure host is on AC power
+  command: acpi -a
+  register: _acpi_ac_adapter
+  failed_when: '"off-line" in _acpi_ac_adapter.stdout'
+  changed_when: false

tasks/main.yaml

@@ -1,5 +1,7 @@
 ---
 
+- import_tasks: ac-power.yaml
+
 - import_role:
     name: display_manager
   vars: