yum不能正常安装 错误:V3 DSA signature: NOKEY

CentOS用yum install安装软件出现错误,大概如下:

Downloading Packages:
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897


Public key for krb5-workstation-1.6.1-31.el5_3.3.x86_64.rpm is not installed


解决办法是导入rpm-key

#cenos4
rpm --import /usr/share/doc/centos-release-4/RPM-GPG-KEY
#centos5
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5

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