Comment 1 for bug 1958580

nova_api_map_cell0 log:

https://logserver.rdoproject.org/48/38348/1/check/periodic-tripleo-ci-centos-8-standalone-upgrade-tripleo-wallaby/5f5a606/logs/undercloud/var/log/extra/podman/containers/nova_api_map_cell0/stdout.log.txt.gz

+ exec /usr/bin/bootstrap_host_exec nova_api /nova_api_map_cell0.sh
(cellv2) Updating cell0 cell_v2 cell 00000000-0000-0000-0000-000000000000
--transport-url not provided in the command line, using the value [DEFAULT]/transport_url from the configuration file
The specified transport_url and/or database_connection combination already exists for another cell with uuid 2b80d767-04ec-4520-a83b-394fca03ad58.

Compare with passing log:

https://logserver.rdoproject.org/openstack-component-tripleo/opendev.org/openstack/tripleo-ci/master/periodic-tripleo-ci-centos-8-standalone-upgrade-tripleo-wallaby/246bb1d/logs/undercloud/var/log/extra/podman/containers/nova_api_map_cell0/stdout.log.txt.gz