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Description of problem:

If /etc/nsswitch.conf already has sudoers entry with sss, ipa-client-install should not add another entry to the line.  However, it does:

sudoers: files sss sss

This can lead to sudo hanging like in bug #1147498.


Version-Release number of selected component (if applicable):
ipa-client-3.0.0-42.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1.  setup IPA server to test against
2.  echo "sudoers: files sss" >> /etc/nsswitch.conf
3.  ipa-client-install
4.  grep sudoer /etc/nsswitch.conf

Actual results:
2 sss entries  on line.

Expected results:
1 sss entry on line.

Additional info:

Thanks for report. I see downstream patch missing this part in configure_nsswitch_database:

        # Make sure no service is added if already mentioned in the list
        added_services = [s for s in services
                          if s not in configured_services]

We should fix this one in next release, given it is causing problems.

Verified on ipa-client-3.0.0-45.el6.x86_64:

[root@idm-qe-03 yum.repos.d]# echo "sudoers: files sss" >> /etc/nsswitch.conf
[root@idm-qe-03 yum.repos.d]# ipa-client-install
Discovery was successful!
Hostname: idm-qe-03.testrelm.test
Realm: TESTRELM.TEST
DNS Domain: testrelm.test
IPA Server: idm-qe-01.testrelm.test
BaseDN: dc=testrelm,dc=test
.
.
.
Client configuration complete.
[root@idm-qe-03 yum.repos.d]# grep sudoer /etc/nsswitch.conf
sudoers: files sss

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, 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://rhn.redhat.com/errata/RHSA-2015-1462.html