- name: fail if not enough memory to store downloaded image
  fail:
    msg: "The image size is too big, no free memory available"
  when: "{{ ansible_memfree_mb }} < {{ image.mem_req }}"
- name: download image with checksum validation
  get_url:
    url: "{{ image.url }}"
    dest: /tmp/{{ inventory_hostname }}.img
    checksum: "{{ image.checksum|default(omit) }}"
  async: 600
  poll: 15