Back at work, in our team (better said department than team), there are two VCP guys. There's me, the guru wanna-be and then there's my other colleague who has a bit more experience than I do; so for the purposes of this posting, let's call him guru. If any of the guys have a question they usually ask one of us before googling. So last week, as 'guru' was not at his desk I got asked by a fellow colleague: Why am I getting this message when trying to install vCenter 5?
The Fully Qualified Domain Name cannot be resolved. If you continue the installation, some features might not work correctly. For detailed requirements, see the vSphere Installation and Setup guide.
Don't know I said. Let's have a look. Computer properties: (domain name has been "masked")
So not part of a domain but there's DNS suffix. Well...when you click next, before the error comes on the scree there's a black command box popping. Worth a shot seeing what's doing. Ran Process Monitor and captured indeed CMD.EXE doing something:
It's doing a rDNS check on the server's IP. Can we check the results in a command prompt?
That doesn't look right. Who's architected this test environment and where's your DNS server young man?
Edited the zone (my colleague was running named on a linux distro as DNS)
Added an entry for our server - last entry visible.
Restarted whatever.
Went back to our soon to be vCenter server and checked:
rDNS works ok now.
Continued the installation...
....warning-free.
Apparently, everyone, guru included, knew about this 'requirement' besides me. (part of the reason also being the fact that I have a proper reverse lookup zone so never had this warning coming up).
Nevertheless, when in doubt, run Process Monitor :).
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