I have had an experience of deploying Fleet manager in Azure cloud, and came across that it only considers Azure DNS service. What if customers have their DNS servers at on-premise? And I could not configure the same for this reason. We know the importance DNS resolution in server architecture. Without DNS servers being added in Fleet Manager configuration which in turn is passed on to individual node, LDAP setup is facing a hard time.
I would recommend that please add a feature in Fleet Manager to take both approaches - cloud DNS service or on-premise DNS servers.