Details
Description
Document that you should not upgrade clusters with long names (long being defined as >255 characters including the domain+namespace+hostname-template). Fix is in 6.6.4. In 7.0 the limit is enforced.
Idea is that a user needs to upgrade to 6.6.4 before upgrade to 7.
Workaround is new cluster, replicate or backup/restore.
If additional information is needed, check with Tommie McAfee