Jay Fenlason via FreeIPA-users wrote:
> On Thu, Feb 20, 2020 at 05:19:50PM -0500, Rob Crittenden wrote:
>> Jay Fenlason via FreeIPA-users wrote:
>>> When attempting to debug another problem with FreeIPA, I noticed
>>> something odd:
>>>
>>> If I have an IPA domain example.com, I can do an ipa-client-install
>>> from a machine named c.d.example.com and it successfully adds the
>>> client to the domain and updates IPA's DNS, but if I do an ipa
>>> host-add of c.d.example.com it gives an error saying
>>> ipa: ERROR: DNS zone d.example.com. not found
>>> which is correct, inasmuch as I never created a d.example.com zone.
>>> But ipa-client-install happily added c.d to the example.com zone.  So
>>> which of these two commands is doing the right thing?
>>
>> ipa-client-install, via ipa-join, creates the host using the non-cli API
>> call join rather than host-add directly. join calls host-add with
>> --force so DNS checks are skipped.
>>
>> The client, as you point out, by default will try to add the DNS records
>> itself in a later step, so it is not enforced up front.
> 
> Thank you for your useful analysis of why they work differently.
> 
> Note that
> ipa host-add c.d.example.com --force --ip-address 192.168.56.5
> fails with the same error as
> ipa host-add c.d.example.com --ip-address 192.168.56.5
> 
> So you can't use --force with the command line to get the same
> behavior as ipa-client-install.

If you include an IP address then --force is ignored because it implies
that the host is already in DNS since you are trying to add an address
for it.

> The question here is really one of design.  Should these commands
> behave differently?
> 
> Should ipa-client-install be able to create a c.d entry in the example.com
> zone, or should it flag the missing d.example.com domain as an error
> the way ipa host-add does?

As I said before, it's there because the client will use nsupdate to
attempt to update DNS. This doesn't happen with host-add.

> Or should ipa host-add add the c.d entry to the example.com zone the
> way ipa-client-install does?

It's there to make the admin pause a second since adding a host without
DNS is not all that useful.

> Or should both of them create the d.example.com zone and add the c
> entry to it? :-)

An enrollment can't create zones.

rob
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