tripleo-heat-templates/environments/nova-hw-machine-type-upgrad...

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YAML

# A Heat environment file to pin NovaHWMachineType and in turn
# [libvirt]hw_machine_type to the legacy default machine types during
# an upgrade. This allows operators to then ensure a machine type is
# recorded for existing instances *before* changing to the new
# default. See the following Nova documentation for more details:
#
# https://docs.openstack.org/nova/latest/admin/hw-machine-type.html
#
parameter_defaults:
NovaHWMachineType: 'x86_64=pc-i440fx-rhel7.6.0,aarch64=virt-rhel7.6.0,ppc64=pseries-rhel7.6.0,ppc64le=pseries-rhel7.6.0'