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From: | Jack Hill |
Subject: | Re: "user with UID not found" error |
Date: | Mon, 1 Aug 2022 14:37:52 -0400 (EDT) |
On Mon, 1 Aug 2022, Christopher Batten wrote:
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. -- RicardoOn 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, ChrisOn 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.htmlThanks 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
I think I've run into a similar issue trying to run packs as well (in my case on AlmaLinux 9). I produced a pack with
`guix pack -f tarball -RR -S /bin=bin screen sssd glibc` and running screen from the pack reports: "getpwuid() can't identify your account!"screen might be a special-case of program, but it seems the problem exists in some way even when not trying to install Guix.
Best, Jack
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