wal-g/tasks/backup_job_timer.yaml

- name: Template systemd backup timer
  template:
    src: backup.timer.j2
    dest: /etc/systemd/system/backup.timer
  notify: Restart backup timer
  register: backup_timer

- name: Enable and start systemd backup timer
  systemd:
    name: backup.timer
    enabled: "{{ 'yes' if wal_g_backup_enable else 'no' }}"
    masked: no
    state: started
    daemon_reload: yes
  when: not backup_timer.changed