redhat yum install - GPG key retrieval failed
Solution 1:
Try to import manually
# rpm --import http://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-6
Solution 2:
You could also simply install with the command
yum install --nogpgcheck {packagename}
Solution 3:
You have to install the epel-release package first in order to get GPG-Keys installed:
sudo rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm