DNS setup for fresh IdM with DNS

[swefredde]

Hi,

Let's say you are in charge of the DNS server handling the domains "domain.tld" and "168.192.in-addr.arpa".

Now you want to install the IdM with DNS covering the sub1.domain.tld and, say, 5.168.192.in-addr.arpa.

To install IdM you need to have DNS resolution work but what is the recommended way to solve this situation without getting errors like "Domain 5.168.192.in-addr.arpa is already handled by <Parent-DNS>"? It's kind of a Catch22 isn't it. What's the trick?

[writertech · Accepted solution]

you'd have to have 5.168.192.in-addr.arpa delegated to you, just like sub1.domain.tld would have to be delegated to you.. your IdM IP space should be separate from the rest of the domain (domain.tld) space (in a perfect world). it becomes a huge mess when you have overlaps with domain.tld, ad.domain.tld, idm.domain.tld, unless they all have their own IP space

[swefredde]

Hi, and thanks for the answer. I agree to what you write.

The question was more "who is answering your DNS requests for the idm servername/ip-number if the parent is forwarding/delegating your questions to the server itself and the server hasn't been setup  to handle dns yet".

[writertech]

Basically, you need stub records in place for the new domain (standard practice) which would always need to be in place for the new domain to be utilized (found/forwarded to - which DNS handles automatically if the stub records are there). Specifically, in domain.tld you have NS entries for sub1.domain.tld for your first server, ex; (sub1 NS idm1.sub1.domain.tld.), and a stub A record so it can find it, ex again in domain.tld; (idm1.sub1 A ip.ad.dr.ess). This has to get adjusted any time you add or remove additional IdM servers/replicas, the stubs and NS records have to match after you add new ones, and removed before you decommission any.

[Juan17]

Pagos filas

[Juan17]

Pagos filas

[Juan17]

Pagos filas Juan 17

[Anireddy31]

Hello,

Am trying to setup IDM with integrated DNS and AD DNS to resolve the IDM host.

AD domain = training.com

IDM domain = nix.training.com

IDM Host = rhel-idm-s-01.nix.training.com

Now when i try to create a stub zone in AD for IDM domain, its giving error while validating the IDM domain as IDM domain (DNS) not yet created, due to which creation of A record is also not possible.

Am i missing somthing. Can help to make me understand on this?

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AND one more thing, is it a hard requirement to have IDM hostname should be part IDM domain?

IDM domain = nix.training.com

IDM Host =rhel-idm-s-01.nix.training.com

( or ) can we have like below.

IDM server hostname (part of AD domain) = rhel-idm-s-01.training.com

IDM domain = nix.training.com

[writertech]

does my previous post answer your question?

[Anireddy31]

Hi,

Yes, the answer is perfect and able to complete the setup.

Thank you very much.

Regards,

Gowtham.