- hosts: all
  gather_facts: true
  tasks:
  - name: group hosts by distribution
    group_by:
      key: '{{ ansible_distribution }}'
    changed_when: false
  - name: group hosts by distribution+version
    group_by:
      key: '{{ ansible_distribution }}{{ ansible_distribution_major_version }}'
    changed_when: false
  - name: group hosts by os family
    group_by:
      key: '{{ ansible_os_family }}'
    changed_when: false
  - name: group hosts by virtualization
    group_by:
      key: >-
        {{ ansible_virtualization_type }}-{{ ansible_virtualization_role }}
    changed_when: false