1、出现

warning: rpmts_HdrFromFdno: V3 DSA signature: NOKEY, key ID 443e1821

Public key for perl-Net-Telnet-3.03-3.noarch.rpm is not installed

===========================

warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
 
GPG key retrieval failed: [Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>

 

解决：导入rpm-key

 1、cenos4

    rpm --import /usr/share/doc/centos-release-4/RPM-GPG-KEY

2、centos5

   rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

参考：http://www.centos.org/modules/newbb/viewtopic.php?topic_id=1589