--- parameter_defaults: HostnameMap: overcloud-controller-0: "{{ controller_0_hostname }}" overcloud-controller-1: "{{ controller_1_hostname }}" overcloud-controller-2: "{{ controller_2_hostname }}" overcloud-novacompute-0: "{{ compute_0_hostname }}" overcloud-novacompute-1: "{{ compute_1_hostname }}" overcloud-networker-0: "{{ networker_0_hostname }}" overcloud-networker-1: "{{ networker_1_hostname }}"