I'll thank you now for your efforts to help the community. I've read through this thread and applied all the things...
"Adding Trusted Target failed - Certificate Status check failed: Failed to resolve target name"
That is the error I got after the appliance install, and thats what I still get after adding Domains=sub.domain.local
I note for the newbies that the domain value needs to be the domain of the vcenter server.
After editing the file I restarted :
systemd-networkd
systemd-resolved
vmware-shd
Still no joy.
Fixed IT!!! -
I change the DNS IP addresses in that file to be the same as those used by vcenter server. restarted the 3 services above and Bob's my uncle.