[Freeipa-users] DNS Design for FreeIPA4

[William Muriithi]

‎Josh,

First, sorry for top posting, on a stupid cell.

You miss the point that dns is not only used for name resolution, but also hosting configurations. If something is not right about dns, lots of incorrect info will be embedded on your ipa clients.

Make it simple as Simon said and point your ipa clients to ipa servers. Redhat recommend you point your ipa clients to ipa server. Microsoft recommend the same thing, point windows clients to AD.


William,

I don't understand why I would have problems if AD DNS can resolve IPA dns, and IPA DNS can resolve AD DNS?

The DNS servers that my servers are using can resolve both AD and IPA.

Thanks,

Josh

> -----Original Message-----
> From: freeipa-users-bounces at redhat.com [mailto:freeipa-users-
> bounces at redhat.com] On Behalf Of William Muriithi
> Sent: Thursday, January 15, 2015 8:08 PM
> To: freeipa-users at redhat.com; freeipa-users at redhat.com
> Subject: Re: [Freeipa-users] DNS Design for FreeIPA4
> 
> ‎Josh,
> 
> You will have problems if you go with below plan in my opinion. I used
> arrangements like the one you listed below when I used freeipa 2.2. This
> worked for me only when I had users hosted on freeipa. After upgrading to
> 3.3 for trust, it became very unreliable and had to point the ipa clients to ipa
> server for it to work reliably
> 
> Especially if you plan to point them to AD, it wouldn't work as AD use dns for
> configuration just like ipa, do there will be conflict.
> 
> William
> 
> 
> We are currently piloting FreeIPA4 (RHEL 7.1 IdM) in our environment. We
> plan on establishing a trust with AD at some point during the POC. An
> overview of the current DNS design:
> 
> * FreeIPA runs integrated DNS (ie, ipa.domain.com)
> * Servers in our environment (even once joined to IPA) continue to use our
> current non-IPA DNS infrastructure for name resolution
> * Servers in our environment have hostnames in several other non-IPA
> domains (not ipa.domain.com)
> * IPA DNS is configured to zone-transfer ipa.domain.com to our primary
> infrwastructure non-IPA DNS servers
> * IPA is configured to forward all non ipa.domain.com requests to our
> primary infrastructure non-IPA DNS servers
> * ipa.domain.com DNS can be resolved from all non-IPA DNS servers since it
> is a slave on our primary non-IPA DNS servers
> * IPA can resolve our Active Directory DNS (ad.domain.lan)
> * Active Directory DNS can resolve IPA DNS (ipa.domain.com)
> 
> Is this a sensible design for DNS? In this configuration, IPA does not appear
> to be creating DNS records in ipa.domain.com for the hosts that we add to
> IPA. This is presumably because the hosts themselves are in other domains
> (not ipa.domain.com) which are not controlled by IPA. Is this going to cause
> problems?
> 
> We have a requirement to keep all servers in our environment using our
> primary non-IPA DNS servers for resolution. It seemed logical to use IPA-
> integrated DNS just so IPA could manage the SRV/LDAP records
> automatically within the IPA zone.
> 
> Any advice/tips/suggestions regarding this design would be greatly
> appreciated.
> 
> Thanks,
> 
> Josh
> 
> 
> 
> 
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