---
- hosts: all
  gather_facts: true
  tasks:
    # why sleep 2? see here: https://github.com/ansible/ansible/issues/14413
    - name: reboot the machines
      shell: sleep 2 && shutdown -r now
      become: yes
      async: 1
      poll: 0

    - name: waiting 3 minutes for the machines to come back
      local_action: wait_for host={{ ansible_default_ipv4.address }} port=22 state=started delay=30 timeout=180

    - name: uptime
      command: uptime