Since we cannot agree on re-enabling automated cleaning in the undercloud (see bug 1437142), we should at least provide a simple way to clean nodes via CLI/GUI. This RFE suggests creating a workflow and a tripleoclient command to invoke it.
Could you please consider putting this RFE on your radar instead of https://bugzilla.redhat.com/show_bug.cgi?id=1437142?
It's possible to clean metadata with:
openstack overcloud node clean <node uuid> #for single node
openstack overcloud node clean --all-manageable # for all manageable nodes
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.