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We have used the dns_nameservers from the subnets for a long time by default: https://review.opendev.org/579582 With network config being applied prior to creating the heat stack we cannot use a THT parameter to feed the input for node network configuration. In Wallaby and later the nameservers must be defined in undercloud.conf using: 'DEFAULT/undercloud_nameservers' or '%SUBNET_SECTION%/dns_nameservers' The latter allow defining nameservers per-ctlplane subnet. Related: RHBZ#2068489 Change-Id: I436fa7f1e87a8e6924c9d93105b06f9ab39eeb8f |
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