ansible-role-mysql-backup/tasks/main.yml

- name: install duplicity
  apt:
    name: duplicity
    state: present
  become: yes
- name: generate commands
  set_fact:
    backup_command: |-
      duplicity --no-encryption --no-print-statistics --verbosity warning
      {%- for selector in item.selectors|default([]) %}
      {% if selector['option'] in ['exclude', 'include'] %}
       --{{selector['option']}} "{{selector['shell_pattern']}}"
      {%- endif %}
      {% endfor %}
       "{{item.source_path}}" "{{item.target_url}}"
  with_items: '{{duplicity_backups}}'
  register: duplicity_backup_commands
- name: setup cron jobs
  blockinfile:
    dest: '/etc/crontab'
    marker: '# ANSIBLE DUPLICITY BACKUPS {mark}'
    block: |-
      {% for backup in duplicity_backup_commands.results %}
      {% for backup_job in backup.item.backup_cron_jobs %}
      {{backup_job.minute}} {{backup_job.hour}} * * * {{backup.item.local_user}} {{backup.ansible_facts.backup_command}}
      {% endfor %}
      {% endfor %}
  become: yes