add

@@ -11,12 +11,10 @@
 
 
 # make sure vaviable exist
-- name: make sure varivable exists
+- name: make sure variable nameservers exists
   fail: 
-    msg: "{{ item }} not exits!"
-  when: "{{item}} == ''"
-  with_items:
-    - nameservers  
+    msg: "variable nameservers not exist "
+  when: nameservers == ''
 
 
 #  make sure group exists