设置centos5.3 yum源

1.修改/etc/yum.repos.d/CentOS-Base.repo为 [base]  name=CentOS-5 - Base  #mirrorlist=http://mirrorlist.centos.org/?release=$releasever5&arch=$basearch&  repo=os  #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/os/$basearch/  gpgcheck=1  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5  #released updates  [update]  name=CentOS-5 - Updates  #mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=updates  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/updates/$basearch/  gpgcheck=1  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5  #packages used/produced in the build but not released  [addons]  name=CentOS-5 - Addons  #mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=addons  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/addons/$basearch/  gpgcheck=1  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5  #additional packages that may be useful  [extras]  name=CentOS-5 - Extras  #mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=extras  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/extras/$basearch/  gpgcheck=1  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5  #additional packages that extend functionality of existing packages  [centosplus]  name=CentOS-5 - Plus  #mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=centosplus  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/centosplus/$basearch/  gpgcheck=1  enabled=0  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5  #contrib - packages by Centos Users  [contrib]  name=CentOS-5 - Contrib  #mirrorlist=http://mirrorlist.centos.org/?release=4&arch=$basearch&repo=contrib  baseurl=http://ftp.sjtu.edu.cn/centos/5.3/contrib/$basearch/  gpgcheck=1  enabled=0  gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-centos5 2.执行: 64位: rpm --import http://ftp.sjtu.edu.cn/centos/RPM-GPG-KEY-CentOS-5 32位: rpm --import http://ftp.sjtu.edu.cn/centos/RPM-GPG-KEY-CentOS-5 3.执行 yum update