In OSP11 ComputeHostnameFormat is set to '%stackname%-novacompute-%index% so we'll most probably hit the same issue with it as in the past:
[stack@undercloud-0 ~]$ grep -A3 Compute /usr/share/openstack-tripleo-heat-templates/roles_data.yaml | grep HostnameFormatDefault
[stack@undercloud-0 ~]$ rpm -qa | grep tripleo-heat-templates
*** Bug 1425472 has been marked as a duplicate of this bug. ***
Putting this back to POST as it landed downstream.
Marius can you confirm that it has been release in latest puddle and is not an issue anymore.
Yes, this is fixed in the latest puddle.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.