This bug has been copied from bug #841070 and has been proposed
to be backported to 5.8 z-stream (EUS).
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.
This fix leaves /etc/nsswitch.conf as permissions 0600 (because the postinstall uses mktemp). nsswitch.conf needs to be 0644 instead of 0600.
see CentOS bug #5883:
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Updating the sudo package resulted in the "sudoers" line in "/etc/nsswitch.conf" being removed. This update corrects the bug in the sudo package's post-uninstall script that caused this issue.