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Bug 2013294

Summary: Lookup with fully-qualified name does not work with 'cache_first = True'
Product: Red Hat Enterprise Linux 8 Reporter: Alexey Tikhonov <atikhono>
Component: sssdAssignee: Sumit Bose <sbose>
Status: CLOSED ERRATA QA Contact: Dhairya Parmar <dparmar>
Severity: high Docs Contact:
Priority: unspecified    
Version: 8.5CC: dparmar, grajaiya, jhrozek, lslebodn, mzidek, pbrezina, rakkumar, tscherf
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: sync-to-jira
Fixed In Version: sssd-2.6.1-1.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 2013379 (view as bug list) Environment:
Last Closed: 2022-05-10 15:26:45 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2011216    
Bug Blocks: 2013379    

Description Alexey Tikhonov 2021-10-12 14:16:47 UTC
This bug was initially created as a copy of Bug #1992973

I am copying this bug because: to track fix for RHEL8



Description of problem:
If the 'cache_first = True' option is used with the nss responder a lookup with the fully-qualified name of a user or group will fail if the requested object is not already in the cache.

Version-Release number of selected component (if applicable):
It looks like the issue is present at least since RHEL-8.3


Steps to Reproduce:
1. Minimal sssd.conf:
[sssd]
domains = proxy
services = nss
[domain/proxy]
id_provider = proxy
proxy_lib_name = files
auth_provider = none
[nss]
cache_first = True

2. restart SSSD with empty cache
3. call 'getent passwd adm@proxy'

Actual results:
This will return no result

Expected results:
Similar as if 'cache_first = True' is not used in sssd.conf the corresponding entry from /etc/passwd for the user 'adm' should be returned.

Additional info:

Comment 1 Alexey Tikhonov 2021-10-12 14:21:27 UTC
Pushed PR: https://github.com/SSSD/sssd/pull/5745

* `master`
    * 26654d3e5f5882dd1681116cb49228d108351d48 - cache_req: cache_first fix for fully-qualified names

Comment 5 Dhairya Parmar 2021-11-16 13:56:28 UTC
Tested against sssd-2.5.2-2.el8.x86_64


#### sssd.conf ####

[sssd]
domains = proxy
services = nss
[domain/proxy]
id_provider = proxy
proxy_lib_name = files
auth_provider = none
[nss]
cache_first = True


#### cache_first = True is used ####

[root@ci-vm-10-0-138-121 sssd]# systemctl stop sssd
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/lib/sss/db
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/lib/sss/mc
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/log/sssd
[root@ci-vm-10-0-138-121 sssd]# systemctl start sssd
[root@ci-vm-10-0-138-121 sssd]# getent passwd adm@proxy
[root@ci-vm-10-0-138-121 sssd]# echo $?
2


#### cache_first = True is not used ####

[root@ci-vm-10-0-138-121 sssd]# systemctl stop sssd
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/lib/sss/db
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/lib/sss/mc
[root@ci-vm-10-0-138-121 sssd]# rm -R /var/log/sssd
[root@ci-vm-10-0-138-121 sssd]# systemctl start sssd
[root@ci-vm-10-0-138-121 sssd]# getent passwd adm@proxy
adm:*:3:4:adm:/var/adm:/sbin/nologin



Tested against sssd-2.6.1-1.el8.x86_64

#### sssd.conf ####

[sssd]
domains = proxy
services = nss
[domain/proxy]
id_provider = proxy
proxy_lib_name = files
auth_provider = none
[nss]
cache_first = True

#### cache_first = True is used ####

[root@ci-vm-10-0-136-231 sssd]# systemctl stop sssd
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/lib/sss/db
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/lib/sss/mc
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/log/sssd
[root@ci-vm-10-0-136-231 sssd]# systemctl start sssd
[root@ci-vm-10-0-136-231 log]# getent passwd adm@proxy
adm:*:3:4:adm:/var/adm:/sbin/nologin


#### cache_first = True is not used ####

[root@ci-vm-10-0-136-231 sssd]# systemctl stop sssd
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/lib/sss/db
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/lib/sss/mc
[root@ci-vm-10-0-136-231 sssd]# rm -R /var/log/sssd
[root@ci-vm-10-0-136-231 sssd]# systemctl start sssd
[root@ci-vm-10-0-136-231 log]# getent passwd adm@proxy
adm:*:3:4:adm:/var/adm:/sbin/nologin



Manual verification comment

Comment 6 Dhairya Parmar 2021-11-17 11:03:22 UTC
upstream PR:

https://github.com/SSSD/sssd/pull/5880

Comment 10 Dhairya Parmar 2021-12-06 11:12:57 UTC
the tested package is available in nightly compose

Comment 12 errata-xmlrpc 2022-05-10 15:26:45 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (sssd bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:2070