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

[KodaK]

On Mon, Apr 9, 2012 at 1:53 PM, Dmitri Pal <dpal at redhat.com> wrote:
> 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:"
>

Sorry, I thought I did reply to the list.

I must be misunderstanding something.

When I ipa-replica-install it does not automatically set up a DNS
replica, correct?

When I run ipa dnsrecord-add domain.com @ --ns-rec
slpidml02.unix.magellanhealth.com. I'm only telling IPA that this new
host is now a nameserver, correct?

So at what point do DNS entries replicate?  Or do I set that up outside of IPA?

Thanks again,

--Jason