"The Red Hat Enterprise Virtualization Manager makes use of sudo to perform operations as root on the host. The default configuration stored in /etc/sudoers contains values to allow this. If this file has been modified since Red Had Enterprise Linux installation these values may have been removed. As root run visudo to ensure that the /etc/sudoers contains the default configuration values. Where it does not they must be added."
*** Bug 1009256 has been marked as a duplicate of this bug. ***