It turns out that /var/log/unbound.log is not supposed to be used in the upstream nodepool images, rather /var/lib/unbound/unbound.log: https://review.openstack.org/#/c/510202/
/var/log/unbound.log is likely used on review.rdoproject.org images due to the delta between upstream and downstream images since we have stopped synchronizing project-config.
It turns out that /var/log/ unbound. log is not supposed to be used in the upstream nodepool images, rather /var/lib/ unbound/ unbound. log: https:/ /review. openstack. org/#/c/ 510202/
/var/log/ unbound. log is likely used on review. rdoproject. org images due to the delta between upstream and downstream images since we have stopped synchronizing project-config.