[Freeipa-users] DDNS with DHCPD and IPA
Andy Tomlin
atomlin at engineer.com
Thu Apr 3 23:50:02 UTC 2014
Awesome, adding the grant line with my key (DDNS_UPDATE) did the trick. This
makes it perform exactly like old config.
Thanks for the help. Someone should put this example in the docs.
-----Original Message-----
From: freeipa-users-bounces at redhat.com
[mailto:freeipa-users-bounces at redhat.com] On Behalf Of William Brown
Sent: Thursday, April 3, 2014 3:29 PM
To: freeipa-users at redhat.com
Subject: Re: [Freeipa-users] DDNS with DHCPD and IPA
On Thu, 2014-04-03 at 11:02 -0700, Andy Tomlin wrote:
> That would be my preference, would then work same as bind/dhcpd before
> switching to ipa. I just dont know how to do it correctly.
>
>
This assumes dhcp and named are on the same system.
For an unrelated project I wrote some docs here:
http://tollgate.readthedocs.org/en/3.0.1/fedora-deploy.html#core-network
And the example config files referenced are:
https://github.com/micolous/tollgate/tree/master/docs/example/fedora
The important parts are:
rndc-confgen -a -r keyboard -b 256
chown named:named /etc/rndc.key
In named.conf add after the options section:
include "/etc/rndc.key";
In the zone (In ipa you will need to add this permission)
grant rndc-key wildcard * ANY;
Then in dhcpd:
include "/etc/rndc.key";
And to the dhcpd range:
zone dhcp.example.lan. {
primary 127.0.0.1;
key "rndc-key";
}
zone 0.4.10.in-addr.arpa. {
primary 127.0.0.1;
key "rndc-key";
}
This should coexist peacefully with freeipa, but try to make sure your DDNS
updated zone is say dhcp.example.com rather than a zone you care about.
Consider you have a domain controller called x.example.com, and you allow
DDNS to example.com. If someone set their hostname to x, they could take
over the DNS records for your DC. Better to have a second zone to prevent
this.
--
William Brown <william at firstyear.id.au>
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