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Bug 1938384

Summary: CUPS doesn't start if sssd starts after cupsd
Product: Red Hat Enterprise Linux 8 Reporter: Bryan Mason <bmason>
Component: cupsAssignee: Zdenek Dohnal <zdohnal>
Status: CLOSED ERRATA QA Contact: Petr Dancak <pdancak>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.3CC: pdancak, psklenar
Target Milestone: rcKeywords: Patch, TestCaseProvided, Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: cups-2.2.6-39.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1949053 (view as bug list) Environment:
Last Closed: 2021-11-09 19:38:31 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:    
Bug Blocks: 1949053    

Description Bryan Mason 2021-03-13 01:46:00 UTC 
Description of problem:

  CUPS sometimes fails to start when sssd is used to resolve user/group
  names.

Version-Release number of selected component (if applicable):

  cups-2.2.6-38.el8.x86_64

How reproducible:

  Unknown

Steps to Reproduce:

1. start cups

Actual results:

  If sssd starts before cupsd, all is good.
  if cupsd starts before sssd, cupsd fails to start.

Expected results:

  cupsd should always start

Additional info:

  This is effectively the same issue raised in Bug 1441860
  but with sssd instead of ypbind.

  sssd.service is included in the "After=" line in
  scheduler/cups.service.in upstream, however I think it makes more
  sense to use the nss-user-lookup.target in the "After=" line rather
  than just adding every possible service that could be used to resolve
  user names.

  I've filed a pull request upstream to use nss-user-lookup.target instead
  of all the .service units:

    https://github.com/OpenPrinting/cups/pull/141
Comment 17 errata-xmlrpc 2021-11-09 19:38:31 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 (Moderate: cups security and bug fix 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/RHSA-2021:4393