---
- name: check hostname
  command: hostname
  register: hostname
  changed_when: False

- name: set hostname
  command: hostname "{{ inventory_hostname_short }}"
  when: hostname.stdout != inventory_hostname_short
  ignore_errors: yes

- name: /etc/hostname
  copy:
    dest: /etc/hostname
    content: "{{ inventory_hostname_short }}\n"
    owner: root
    group: root
    mode: 0644
    backup: yes

- name: /etc/hosts
  template:
    dest: /etc/hosts
    src: hosts.j2
    owner: root
    group: root
    mode: 0644