[Freeipa-users] Dynamic DNS Questions

[Martin Štefany]

Hello Detlev,

FreeIPA/SSSD client use IP address of interface/vlan/subnet which is use 
to communicate (LDAP) with FreeIPA server.

However, if you have dyndns_update set to True in sssd.conf, you can 
also set dyndns_iface to point to correct interface which IP addresses 
will be dynamically updated in DNS, see:

$ man sssd-ipa
[stripped]
        dyndns_iface (string)
            Optional. Applicable only when dyndns_update is true. Choose 
the interface or a list of interfaces whose IP addresses should be used 
for dynamic DNS updates. Special value “*” implies that IPs from all 
interfaces
            should be used.

            NOTE: While it is still possible to use the old 
ipa_dyndns_iface option, users should migrate to using dyndns_iface in 
their config file.

            Default: Use the IP addresses of the interface which is used 
for IPA LDAP connection

            Example: dyndns_iface = em1, vnet1, vnet2
[stripped]

Kind regards,
Martin



On 6/8/2016 1:00 PM, Detlev Habicht wrote:
> Hi all,
>
> well, i am really a beginner with IPA and just trying to setup some
> test systems. In the moment one IPA server, one NFS/Samba server and a
> fedora CLient. I am running IPA 4.2, Scientific Linux 7.2 and Fedora 23.
>
> The most important things are running now.
>
> But i have a problem with DNS entries left. Maybe while installing
> IPA i make mistakes with the NFS Server. On this NFS server i have 5
> interfaces. 4
> of them now as bond interface. So i am running two IPs now: nn.16 and
> nn.33.
>
> But while installing IPA (with DNS) it takes the wrong one (16):
>
> 2016-05-26T14:08:12Z DEBUG Writing nsupdate commands to
> /etc/ipa/.dns_update.txt:
> 2016-05-26T14:08:12Z DEBUG debug
> update delete nnnix.nnn.intern. IN A
> show
> send
> update delete nnnix.nnn.intern. IN AAAA
> show
> send
> update add nnnix.nnn.intern. 1200 IN A nnn.nn.nn.16
> show
> send
> 2016-05-26T14:08:12Z DEBUG Starting external process
> 2016-05-26T14:08:12Z DEBUG args='/usr/bin/nsupdate' '-g'
> '/etc/ipa/.dns_update.txt'
>
>
> I can change the DNS entry on the IPA server to nn.33 at runtime. Then
> everything
> is ok. But when i boot the NFS server, it is changing the DNS entry on
> the IPA Server to nn.16.
>
> What can i do so the IPA client (here my NFS Server) is using the right IP?
> I don’t find any conf-File … Is there any point where i can change this IP?
>
> Thanx for any help!
>
> Detlev
>
>
> --
>   Detlev  | Institut fuer Mikroelektronische Systeme
>   Habicht | D-30167 Hannover +49 511
> 76219662 habicht at ims.uni-hannover.de <mailto:habicht at ims.uni-hannover.de>
>   --------+-------- Handy    +49 172 5415752  ---------------------------
>
>
>
>
>

-- 
--
Martin