#
# This playbook lets you safely reboot a virthost and all it's guests.
#
# requires --extra-vars="target=somevhost fqdn"

# General overview:
# talk to the vhost
# get back list of instances
# add each of their hostnames to an addhoc group
# halt each of them in a second play
# wait for them to die
# third play, reboot the vhost
#     wait for vhost to come back

# TODO: Figure out how to compare virt info pre and post boot.

---
- name: Find instances
  hosts: "{{ target }}"
  gather_facts: false
  user: root

  tasks:
  - name: Get list of guests
    virt: command=list_vms
    register: vmlist

#  - name: Get info on guests (prereboot)
#    virt: command=info
#    register: vminfo_pre

  - name: Add them to myvms_new group
    local_action: add_host hostname={{ item }} groupname=myvms_new
    with_items: "{{ vmlist.list_vms }}"

- name: Halt instances
  hosts: myvms_new
  user: root
  gather_facts: false
  serial: 1

  tasks:
  - name: Halt the vm instances - to poweroff
    ansible.builtin.command: /sbin/shutdown -h 1
    ignore_errors: true
    # if one of them is down we don't care

- name: Wait for the whole set to die.
  hosts: myvms_new
  gather_facts: false
  user: root

  tasks:
  - name: Wait for them to die
    local_action: wait_for port=22 delay=30 timeout=300 state=stopped host={{ inventory_hostname }}

- name: Reboot vhost
  hosts: "{{ target }}"
  gather_facts: false
  user: root

  tasks:
  - name: Halt the virthost
    ansible.builtin.command: /sbin/shutdown -h 1