关于centos使用yum命令安装时出现 Invalid GPG Key 错误到解决方法。

这是我遇到到错误：warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 6b8d79e6: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY.Dag.txt

Invalid GPG Key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY.Dag.txt: No key found in given key data

软件安装包已经已经下载，但无法安装，

解决方法：Install DAG's GPG key ：sudo rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt

参考：http://yidao620c.iteye.com/blog/1395553

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