tasks/main.yml

@@ -1,2 +1,14 @@
 ---
+- include_vars: "{{ var_files }}"
+  vars:
+    var_files: "{{ lookup('first_found', params, errors='ignore') }}"
+    params:
+      files:
+        - "{{ ansible_lsb.id | default('') | lower }}.yml"
+        - "{{ ansible_os_family | lower }}-{{ ansible_distribution_major_version }}.yml"
+        - "{{ ansible_os_family | lower }}.yml"
+      paths:
+        - "vars"
+  when: var_files
+
 - include_tasks: setup.yml

tasks/setup.yml

@@ -59,7 +59,7 @@
 
     - name: Ensure openvpn service is up and running
       service:
-        name: "openvpn@{{ openvpn_client_name }}"
+        name: "{{ __openvpn_service_prefix }}@{{ openvpn_client_name }}"
         state: "{{ openvpn_service_state }}"
         enabled: yes
   become: True

vars/redhat-7.yml

@@ -0,0 +1,2 @@
+---
+__openvpn_service_prefix: openvpn

vars/redhat-8.yml

@@ -0,0 +1,2 @@
+---
+__openvpn_service_prefix: openvpn-client