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Description of problem:
the RHEL6 Identity Management Guide, chapter 20.4.2 , "Applying the Configured sudo Policies to Hosts Using SSSD" provides instructions on how to configure sudo to use SSSD.  However, these instructions do not work unless libsss_sudo is installed. 

Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 6.5
Identity Management Guide
Managing Identity and Authorization Policies for Linux-Based Infrastructures
Edition 3.0.0

How reproducible:
Always

Steps to Reproduce:
1. Follow documentation at https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Identity_Management_Guide/config-sudo-clients.html#example-configuring-sudo-sssd
2. Try to sudo
3. Observe error "sudo: Unable to dlopen /usr/lib64/libsss_sudo.so"
4. After installing libsss_sudo

Actual results:
"sudo: Unable to dlopen /usr/lib64/libsss_sudo.so"

Expected results:
Error should not occur, and if sudo is properly configured, access should be granted.

Additional info:
"yum install libsss_sudo" corrects error.

Please forget about step #4 of Steps to reproduce, it comes from a copy&paste error