iiab/roles/0-init/tasks/tz.yml

- name: Check if the TZ is not already set via /etc/localtime - Can Fail
  shell: readlink /etc/localtime | awk -F "zoneinfo/" '{print $2}'
  register: TZ_set
  ignore_errors: True

- name: Set local and iiab TZ to UTC if /etc/localtime is not set
  set_fact:
      local_tz: 'UTC'
      iiab_TZ: 'UTC'
  when: TZ_set.stdout == ""

- name: Override ansible on timezone if TZ set
  set_fact:
      local_tz: '{{ TZ_set.stdout }}'
  when: TZ_set.stdout != ""

- name: Using iiab TZ for local TZ
  set_fact:
      local_tz: '{{ iiab_TZ }}'
  when: iiab_TZ is defined and iiab_TZ != "" and iiab_TZ != "TZ_set.stdout"

- name: Set default Timezone from iiab TZ -  Debian
  shell: timedatectl set-timezone {{ iiab_TZ }}
  when: is_debuntu and iiab_TZ is defined and iiab_TZ != "" and iiab_TZ != "TZ_set.stdout"

- name: Set default Timezone from iiab TZ -  Redhat
  file:
      path: /etc/localtime
      src: /usr/share/zoneinfo/{{ iiab_TZ }}
      force: yes
      state: link
  when: is_redhat and iiab_TZ is defined and iiab_TZ != "" and iiab_TZ != "TZ_set.stdout"