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I've just started virtualising some Linux servers, and want them to have DNS names like this:

name.vm.company.internal

Our DNS is hosted on Windows 2003 Active Directory, so most machines are currently named:

name.company.internal

These boxes are joined to the company.internal AD domain using Samba 3, but they don't make dynamic DNS updates - I'd like them to so that I don't have to manage their main DNS separately.

To achieve this, will I need to create a separate AD subdomain of vm.company.internal or can I get them to update their DNS correctly while remaining manageable through the company.internal domain?

Iain Hallam
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1 Answers1

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Assuming I understood the question completely and I'm thinking clear enough this morning...

If the Linux servers are AD joined already to company.internal (which is a bad AD FQDN but I digress), then unless you want to deal with a child domain in AD for vm.company.internal you're best bet is to simply create a DNS subdomain inside DNS only and create static entries for those Linux servers as name.vm.company.internal.

The servers IPs shouldn't really be dynamic, so static records in the DNS subdomain should suffice.

You will still be able to see them as their existing name.company.internal as well, which will make AD happy enough.

TheCleaner
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  • I agree with you on the FQDN, but one step at a time... – Iain Hallam Jan 20 '14 at 18:02
  • So no way to dynamically update a DNS subdomain automatically? The main reason I ask is that we are preparing to move a lot of these things around to clean things up. – Iain Hallam Jan 20 '14 at 18:03
  • I'm not sure on the Linux client idea. For a Windows client, it should be possible under the TCP/IP advanced settings if you are specifying the DNS connection suffix that it would dynamically update the subdomain in DNS. But for me personally, I don't rely on dynamic updates of non-DHCP clients, I prefer statically controlling entries for servers and devices with static IPs. – TheCleaner Jan 20 '14 at 19:42