ffdo-ansible/roles/hostname/tasks/main.yml

---
# tasks file for ffdo.hostname

- name: Ensure hostname is set
  hostname: name={{ inventory_hostname_short }}

- name: Ensure /etc/hosts entry for hostname exists
  lineinfile: dest=/etc/hosts regexp="^127\\.0\\.1\\.1" line="127.0.1.1 {{ inventory_hostname }} {{ inventory_hostname_short }}"