Update..

roles/common/tasks/nis-user.yml

@@ -48,25 +48,20 @@
     
 #- meta: end_host
 
-- name: (nis_user.yml) Check if nis (system) user exists
-  shell: "getent passwd {{ item.name }}"
-  register: nis_user_exists
-  changed_when: "nis_user_exists.rc == 2"
-  failed_when: "nis_user_exists.rc > 2"
-  loop: "{{ nis_user }}"
-  loop_control:
-    label: '{{ item.name }}'
-  ignore_errors: true
+- name: (nis_user.yml) Get database of nis (system) users
+  getent:
+    database: passwd
   tags:
     - nis-user
     - system-user
 
-- name: (nis_user.yml) Add nis (system) users 
+- name: (nis_user.yml) Add nis (system) users if not yet exists..
   shell: "/root/bin/admin-stuff/add_new_user.sh {{ item.name }} '{{ item.password }}'"
   loop: "{{ nis_user }}"
   loop_control:
     label: '{{ item.name }}'
-  when: nis_user_exists is changed
+  when:
+    - item.name not in getent_passwd
   notify: Renew nis databases
   tags:
     - nis-user