Update to 2020-05-14 18:00

roles/common/defaults/main.yml

@@ -118,4 +118,7 @@ system_base_bash_aliases:
 system_extra_bash_aliases: {}
 system_bash_aliases: "{{ system_base_bash_aliases | combine(system_extra_bash_aliases, recursive=True) }}"
 
+# shell scriplet to exec on boot
+system_rc_local_cmd: []
+
 ...

roles/common/tasks/system.yml

@@ -136,4 +136,14 @@
 - name: Deploy bash aliases
   template: src=bash_aliases.sh.j2 dest=/etc/profile.d/ansible_aliases.sh mode=755
 
+- name: Ensure /etc/rc.d exists
+  file: path=/etc/rc.d state=directory
+
+- name: Deploy rc.local script
+  template: src=rc.local.j2 dest=/etc/rc.d/rc.local mode=755
+
+  # Debian is using /etc/rc.local while RHEL is using /etc/rc.d/rc.local
+- name: Link /etc/rc.local to /etc/rc.d/rc.local
+  file: src=/etc/rc.d/rc.local path=/etc/rc.local state=link force=True
+
 ...

roles/common/templates/rc.local.j2

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# {{ ansible_managed }}
+
+{% for cmd in system_rc_local_cmd %}
+{{ cmd }}
+{% endfor %}
+
+exit 0