The following lines were added (+) and removed (-):
rpm -qR fail2ban-0.8.11-2.el6.noarch.rpm rpm -ih --percent fail2ban-0.8.11-2.el6.noarch.rpmYou might have some dependencies to install, like yum install gamin-python wget http://mirror.pnl.gov/epel//6/i386/python-inotify-0.9.1-1.el6.noarch.rpm rpm -ih --percent python-inotify-0.9.1-1.el6.noarch.rpmThese are the most common 2 needed for CentOS users. Get them and any others possibly needed then try to install fail2ban again.