---
- hosts: core, dvrs, tvrs, webtvs
  tasks:
  - name: Get timezone.
    command: date '+%Z'
    delegate_to: localhost
    changed_when: false
    check_mode: false
    register: zone

  - name: Get city.
    shell: readlink /etc/localtime | sed 's,/usr/share/zoneinfo/,,'
    delegate_to: localhost
    changed_when: false
    check_mode: false
    register: city

  - name: Update timezone.
    become: yes
    command: timedatectl set-timezone {{ city.stdout }}
    when: ansible_date_time.tz != zone.stdout
    register: new_tz

- hosts: dvrs
  tasks:
  - name: Restart AgentDVR.
    become: yes
    systemd:
      service: AgentDVR
      state: restarted
    when: new_tz.changed

- hosts: tvrs
  tasks:
  - name: Restart MythTV.
    become: yes
    systemd:
      service: "{{ item }}"
      state: restarted
    loop: [ mysql, mythtv-backend ]
    when: new_tz.changed