[Freeipa-users] Setting up replication, documentation unclear regarding DNS entries

[Dmitri Pal]

On 04/09/2012 02:50 PM, KodaK wrote:
> On Mon, Apr 9, 2012 at 1:46 PM, Dmitri Pal <dpal at redhat.com> wrote:
>> On 04/09/2012 02:41 PM, KodaK wrote:
>>> On Mon, Apr 9, 2012 at 1:34 PM, Dmitri Pal <dpal at redhat.com> wrote:
>>>> On 04/09/2012 02:07 PM, KodaK wrote:
>>>>> I have two IPA servers.  The primary/master is SLPIDML01 and the
>>>>> replica is SLPIDML01.  I have followed the instructions for creating a
>>>>> replica and the install on SLPIDML02 completed successfully.  However,
>>>>> the instructions tell me to add some entries to the DNS zone file, and
>>>>> I'm stumped.
>>>>>
>>>>> The FreeIPA documentation has this to say about setting up DNS for replicas:
>>>>>
>>>>> Updating DNS for IPA Replicas
>>>>>
>>>>> After you have configured a new IPA replica, you should update your
>>>>> DNS entries so that IPA clients can discover the new server. For
>>>>> example, for an IPA replica with a server name of $HOST, you should
>>>>> add the following entries to your zone file:
>>>>>
>>>>> _ldap._tcp             IN SRV 0 100 389       $HOST
>>>>> _kerberos._tcp         IN SRV 0 100 88 $HOST
>>>>> _kerberos._udp         IN SRV 0 100 88 $HOST
>>>>> _kerberos-master._tcp  IN SRV 0 100 88 $HOST
>>>>> _kerberos-master._udp  IN SRV 0 100 88 $HOST
>>>>> _kpasswd._tcp          IN SRV 0 100 464 $HOST
>>>>> _kpasswd._udp          IN SRV 0 100 464 $HOST
>>>>> _ntp._udp              IN SRV 0 100 123 $HOST
>>>>>
>>>>> I know very little about configuring DNS.  Where exactly should this
>>>>> go?  It says to add it to your zone file, all I see is a
>>>>> named.rfc1912.zones file, and it appears to be rather structured.  Do
>>>>> I just dump these at the end?  That doesn't seem to make any sense.  I
>>>>> see a reference to /var/named/example.com.zone.db, but I don't have
>>>>> one for my domain, and I still don't know what the format of the file
>>>>> should be.  Do I need to make entries for both hosts (and any others I
>>>>> add in the future?)
>>>>>
>>>> What DNS server do you use?
>>>> Did you consider using DNS server that comes with IPA?
>>>>
>>> I am using the DNS server that comes with IPA.
>> Then the replicas are added automatically to the DNS servers managed by
>> IPA. I think the documentation refers to the case when you are not using
>> the DNS server provided by IPA. Then you need to add mentioned entries.
>> If this is not clear please open a ticket and provide a pointer to the
>> section that caused the confusion.
> I've opened a ticket, thanks.
>
> When I manually turn off the network interfaces on the master, the
> replica does not take over.

How you test it?
The client will fail over if it can't access the server that you turned
off.


> For the record, the documentation makes no discernible differentiation
> between IPA's DNS and external DNS:
>
> "Once the installation process completes, update the DNS entries so
> that IPA clients can discover the new server. For example, for an IPA
> replica with a hostname of ipareplica.example.com:"

Thanks.

> --Jason


-- 
Thank you,
Dmitri Pal

Sr. Engineering Manager IPA project,
Red Hat Inc.


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