Import DAG Key in Centos DAGLinuxYum Posted on December 2, 2011December 2, 2011 | by admin Error Message “GPG key retrieval failed: [Errno 5] OSError: [Errno 2] No such file or directory: ‘/etc/pki/rpm-gpg/RPM-GPG-KEY-dag'” Solution: rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt