hostname.yml

---
- name: Rename hostname in /etc/hostname
  hostname:
    name: "{{ server_hostname }}"
  notify: restart networking

- name: Rename ipv4 hostname in /etc/hosts
  lineinfile:
    dest: /etc/hosts
    regexp: "^{{ ipv4_address }}"
    line: "{{ ipv4_address }} {{ server_hostname }}"
    state: present
  notify: restart networking

- name: Rename ipv6 hostname in /etc/hosts
  lineinfile:
    dest: /etc/hosts
    regexp: "^{{ ipv6_address }}"
    line: "{{ ipv6_address }} {{ server_hostname }}"
    state: present
  when: (ipv6_address is defined) and (ipv6_address|length > 0)
  notify: restart networking