Re: "user with UID not found" error

[Christopher Batten <cbatten@cornell.edu>]

>>> > On Jul 27, 2022, at 8:44 AM, Ricardo Wurmus <rekado@elephly.net> wrote:
>>> > 
>>> > Hi Christopher,
>>> > 
>>> >> Turns out we are using SSSD not NCSD on our Linux systems. It seems to be working fine:
>>> > 
>>> > You will need to run NSCD if you want Guix software to be able to talk
>>> > to the system’s SSSD.  The reason is that SSSD works by having
>>> > applications load a library whereas NSCD implements a network protocol.
>>> > Software built with Guix cannot load the system libary due to ABI
>>> > conflict, but it *can* talk to NSCD over the network.
>>> > 
>>> > The system NSCD talks to the system SSSD, so there’s no problem there.
>>> > 
>>> > -- 
>>> > Ricardo
>> 
>> On Wed, Jul 27, 2022 at 12:51 PM Christopher Batten <cbatten@cornell.edu> wrote:
>> 
>> Hmmm ... this made me think that running both was not a great idea?
>> 
>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system-level_authentication_guide/usingnscd-sssd
>> 
>> But I am not an expert on any of this :) I guess the key is to just make sure you only enable caching for hosts in /etc/nscd.conf?
>> 
>> Best,
>> Chris
> 
> On Jul 28, 2022, at 9:14 PM, Chris Marusich <cmmarusich@gmail.com> wrote:
> 
> FYI: https://lists.gnu.org/archive/html/guix-devel/2022-02/msg00263.html

Thanks for everyone's help! I think I understand now: the key is if we want to use guix, then we really do want to run NSCD and SSSD on these RHEL/CentOS systems if at all possible.

So I think we just now need to follow the instructions here?

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system-level_authentication_guide/usingnscd-sssd

Or do you recommend a different way to run NSCD and SSSD at the same time on RHEL/CentOS systems? 

Once we figure this out maybe we should add a note about this in the Guix docs here:

https://guix.gnu.org/manual/en/html_node/Application-Setup.html

Especially if Fedora is intending to remove NSCD?

Thanks!
Chris