okd/playbooks/libvirt/openshift-cluster/list.yml

- name: Generate oo_list_hosts group
  hosts: localhost
  connection: local
  gather_facts: no

  vars:
    libvirt_uri: 'qemu:///system'

  tasks:
    - name: List VMs
      virt:
        command: list_vms
      register: list_vms

    - name: Collect MAC addresses of the VMs
      shell: 'virsh -c {{ libvirt_uri }} dumpxml {{ item }} | xmllint --xpath "string(//domain/devices/interface/mac/@address)" -'
      register: scratch_mac
      with_items: '{{ list_vms.list_vms }}'
      when: item|truncate(cluster_id|length+1, True) == '{{ cluster_id }}-...'

    - name: Collect IP addresses of the VMs
      shell: "awk '/{{ item.stdout }}/ {print $1}' /proc/net/arp"
      register: scratch_ip
      with_items: '{{ scratch_mac.results }}'
      when: item.skipped is not defined

    - name: Add hosts
      add_host:
        hostname: '{{ item[0] }}'
        ansible_ssh_host: '{{ item[1].stdout }}'
        ansible_ssh_user: root
        groups: oo_list_hosts
      with_together:
        - '{{ list_vms.list_vms }}'
        - '{{ scratch_ip.results }}'
      when: item[1].skipped is not defined

- name: List Hosts
  hosts: oo_list_hosts

  tasks:
    - debug:
        msg: 'public:{{ansible_default_ipv4.address}} private:{{ansible_default_ipv4.address}}'