solution

apache.yml

@@ -1,42 +1,18 @@
 ---
 - name: install apache via ansible playbook
-  hosts: centos
+  hosts: cibles
 
   tasks:
-  - name: install apache
-    yum:
-      name: httpd
-      state: present
+  - name: import OS Specific variables
+    include_vars: "{{ ansible_distribution | lower }}.yml"
 
-  - name: conf httpd
-    template:
-      src: vhost.conf
-      dest: /etc/httpd/conf.d/vhost.conf
-      mode: 0640
-      owner: root
-      group: apache
+  - name: install apache
+    package:
+      name: "{{ apache_package_name }}"
+      state: present
 
   - name: activate apache
     service:
-      name: httpd
+      name: "{{ apache_service_name }}"
       enabled: yes
-      state: started
-
-  - name: open firewall port
-    firewalld:
-      service: http
-      permanent: yes
-      immediate: yes
-      state: enabled
-    ignore_errors: true
-
-  - name: create documentroot
-    file:
-      name: /var/www/html/example.org/
-      state: directory
-
-  - name: copy index file
-    template:
-      src: index.txt
-      dest: /var/www/html/example.org/index.html
-      mode: 0644
+      state: started