topic Re: DNS requirements for vcenter 6.0 in VMware vCenter™ Discussions

DNS requirements for vcenter 6.0

eos11 — Thu, 28 May 2015 10:30:00 GMT

We would like to install vcenter, but the documentation mentions DNS has to be setup correctly first. We have not setup any DNS, and vsphere and vshpere client work fine.

In simple terms, what exactly do we need to setup?

Thanks.

Re: DNS requirements for vcenter 6.0

rcporto — Thu, 28 May 2015 13:35:39 GMT

Here is what you need: Verify That the FQDN is Resolvable

Re: DNS requirements for vcenter 6.0

eos11 — Tue, 02 Jun 2015 14:27:55 GMT

Hi, thanks for sending the link , but the reason I posted this question is because the information on that link does not make sense.

According to the documentation, it is a prerequisite, not a optional feature. Also, it doesnt stat what needs to have a FQN. The link you sent implies that only the vcenter appliance needs to have the FQN resolvable, but I have seen other posts saying that the vsphere server needs to have a fqn and it needs to have a reverse lookup also (which is not stated in this link)?

The link states that the FQN is optional, in which case why is listed in pre-requisites, and why does everyone say if its not setup, it wont work?

Re: DNS requirements for vcenter 6.0

Anjani_Kumar — Tue, 02 Jun 2015 14:34:15 GMT

Prerequisite is because multiple components relied on the dns only.

e.g. SSO will not work if the dns not setup correctly.

User authantication will raise problems.

domain join will not work.

mks problem will raise frequently.

Enterprise will work on AD authentication and AD depends on DNS and dns works when fqdn is correct.

And so much on.

thats why its in to prerquisite for creating a fqdn for your vcenter and hosts as well.

Re: DNS requirements for vcenter 6.0

MKguy — Tue, 02 Jun 2015 15:08:15 GMT

If this is about the VCSA:

It still works without DNS, but you need to specify the IP address as the OS host name when deploying the VCSA in the wizard.

Re: DNS requirements for vcenter 6.0

eos11 — Tue, 02 Jun 2015 21:06:41 GMT

"and hosts as well."

The link only said a one way DNS lookup was required for the vcenter appliance itself. Is it documented what the exact prerequisites are, e.g. if it also includes other hosts or other components?