Ansible learning note

Gathers facts from all hosts defined in a specific inventory file:

ansible all -i ../<inventory_file> -u ubuntu -m setup

Content changed to trigger the restart of nginx:

- name: web content task
  .......
  register: content_result

- name: Restart nginx if content is changed
  service:
    name: nginx
    state: restarted
  when: content_result.changed