On Wed, Mar 16, 2022 at 11:39 AM Brian J. Murrell <[email protected]>
wrote:

> > Hi,
>
> Hi.
>
> > What OS are running on your system?
>
> EL8.5
>

Did you tune any default selinux policies?

>
>
> > What is the output of `cat /etc/nsswitch.conf | grep passwd` on your
> > system?
>
> passwd:     sss files systemd
>

You might want to consider:
 - changing the order to: 'files sss ...'
and
 - setting `enable_files_domain = false` (see `man sssd.conf` for details)


>
> > Do you use SSSD on purpose?
>
> Yes.  I use FreeIPA here.
>

Does `getent passwd $your_ipa_use` work for you?


>
> So it's not at all surprising to see these /var/lib/sss accesses.  I
> just want to understand what they might be for and why nothing is
> (apparently) breaking due to the accesses being denied,


Most probably those are lookups (`getpwnam()`, etc) of local users.
When SSSD fails to serve this lookup, it's being served by next source in
your nsswitch.conf (i.e. 'files')


>
> and if that's a
> condition that can continue to happen without there being some future
> fall-out.  I.e. what is the result of those accesses being denied
> instead of being allowed?
>

If client app can't connect to the sssd_nss responder socket, then any SSSD
lookup should fail...
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