yum 安装软件的时候出现了一下错误:
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
update/gpgkey                                           

Public key for apr-util-1.2.7-11.el5_5.1.i386.rpm is not installed



解决方法:rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release