yum的GPG问题

＃yum install kernel-source

　　You have enabled checking of packages via GPG keys. This is a good thing.

　　However, you do not have any GPG public keys installed. You need to download

　　the keys for packages you wish to install and install them.

　　解决方法是

　　执行 rpm --import /path/to/gpg.key

　　我这里是redhat，

　　rpm --import /usr/share/rhn/RPM-GPG-KEY