---
- name: bogus
  hosts: servers
  gather_facts: no
  #order: shuffle
  max_fail_percentage: 34%
  serial:
    - 50%
    - 100%
  tasks:
    - name: create a directory /tmp/foo
      file:
        path: /tmp/foo
        state: absent

#    - name: just pretend
#      #run_once: yes
#      command: sleep 1
#      changed_when: false

    - name: pretend some more
      command: echo foo
      changed_when: false