[Freeipa-users] netgroups not working for exports in freeipa

[Roderick Johnstone]

On 29/01/2015 17:32, Jakub Hrozek wrote:
> On Wed, Jan 28, 2015 at 01:57:28PM +0000, Roderick Johnstone wrote:
>> On 28/01/15 10:57, Jakub Hrozek wrote:
>>> On Tue, Jan 27, 2015 at 10:03:37PM +0000, Roderick Johnstone wrote:
>>>> Hi
>>>>
>>>> I'm migrating from a legacy NIS setup to ipa. I have a number of NIS
>>>> netgroups (of hosts) that are being used to export (non-kerberos) nfs shares
>>>> to which I would like to migrate to ipa.
>>>>
>>>> I've create a new netgroup in ipa (for testing) and added some hosts to it
>>>> (using ipa netgroup-add and ipa netgroup-add-member). I'm hoping that when
>>>> exporting an nfs share using the @netgroup syntax in /etc/exports that the
>>>> netgroup will be looked up in ipa and the share will be exported to the
>>>> hosts in the netgroup.
>>>>
>>>> /etc/nsswitch.conf has a line:
>>>> netgroup:   files nis sss
>>>>
>>>> /etc/exports has a line:
>>>> /var/tmp/testexport @rmjnetgroup1(ro)
>>>>
>>>> I haven't, so far, been able to mount the exported share on a client so I'm
>>>> wondering if this setup would be expected to work?
>>>>
>>>> What is confusing to me is that the section in the Redhat 6 Identity
>>>> Management guide on netgroups also has information on running the NIS
>>>> listener plugin so I'm wondering if perhaps this only works when running the
>>>> nis listener. I'm trying to avoid that.
>>>>
>>>> I'd welcome any clarification on how to do non-kerberised nfs exports to
>>>> groups of hosts.
>>>
>>> Does getent netgroup rmjnetgroup1 show the hosts you'd expect?
>>>
>>
>> Indeed it does.
>>
>> The individual triples listed for the netgroup contain entries like:
>> (host,-,domain)
>> where host is a fully qualified hostname which is dns resolvable.
>>
>> (For info if I do ypcat on one of my NIS netgroups I get a triple like this:
>> (host,,)
>> where host is the fully qualified host name, and nothing in the domain
>> field.
>>
>> I've actually tried two netgroups with different domains set. The first one
>> (rmjnetgroup) I made without specifying the --nisdomain option to ipa
>> netgroup-add and domain in the output above shows as my dns domain (which is
>> a lower case version of my kerberos realm).
>>
>> I couldn't mount nfs shares when exporting to @rmjnetgroup. I checked that I
>> could mount the shares when I exported explicitly to the fully qualified
>> host name, and that worked ok.
>>
>> So, thinking that the problem was with the domain name I made a new netgroup
>> (rmjnetgroup1) with the option --nisdomain=xxx where xxx is the proper name
>> for our nis domain as shown with the domainname command.
>>
>> I couldn't mount nfs shares when exporting to @rmjnetgroup1 either.
>>
>> Roderick
>
> Thank you for your reply, then we know the SSSD's netgroup handling is
> correct. To be honest, we're getting a bit out of my comfort zone into
> the NFS area.
>
> Maybe Roland (CC) knows how to debug the issue further?
>

Thanks for your interest Jakub.