爱华网3、#ll-rw-r--r--. 1 root root 2006 Aug 312011 CentOS-Base.repo-rw-r--r--. 1 root root 1926 Oct5 23:21 CentOS-Base.repo-backpag-rw-r--r--. 1 root root 637 Jun26 02:29 CentOS-Debuginfo.repo-rw-r--r--. 1 root root 626 Jun26 02:29 CentOS-Media.repo-rw-r--r--. 1 root root 2593 Jun 26 02:29CentOS-Vault.repo
4、#geditCentOS-Base.repo把原始内容替换为想要的源（如下网易163CentOS6*的源），该步骤开始请先不要照做，亲，埋头往下看吧。
# CentOS-Base.repo## The mirror system uses the connecting IP address of theclient and the# update status of each mirror to pick mirrors that areupdated to and# geographically close to the client. Youshould use this for CentOS updates# unless you are manually picking other mirrors.## If the mirrorlist= does not work for you, as a fall back youcan try the# remarked out baseurl= line instead.##
[base]name=CentOS-$releasever - Base - 163.combaseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=osgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#released updates[updates]name=CentOS-$releasever - Updates - 163.combaseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updatesgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful[extras]name=CentOS-$releasever - Extras - 163.combaseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extrasgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existingpackages[centosplus]name=CentOS-$releasever - Plus - 163.combaseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplusgpgcheck=1enabled=0gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users[contrib]name=CentOS-$releasever - Contrib - 163.combaseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contribgpgcheck=1enabled=0gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
5、#yum update
6、ok
以上（4~6）只供观看，介绍更简单的方法：
1、#cd/etc/yum.repos.d2、#cpCentOS-Base.repoCentOS-Base_backpag.repo //备份当前源3、#wgethttp://mirrors.163.com/.help/CentOS6-Base-163.repo//直接163下载相关的源4、#ll-rw-r--r--.1 root root 2006 Aug 31 2011CentOS6-Base-163.repo.1 //这就是我们想要的（163源） -rw-r--r--. 1 root root 2006 Aug 312011 CentOS-Base.repo -rw-r--r--. 1 root root1926 Oct 5 23:21CentOS-Base.repo-backpag -rw-r--r--. 1 root root637 Jun 26 02:29 CentOS-Debuginfo.repo -rw-r--r--. 1 root root626 Jun 26 02:29 CentOS-Media.repo -rw-r--r--. 1 root root 2593 Jun 26 02:29CentOS-Vault.repo5、#mvCentOS6-Base-163.repo.1CentOS-Base.repo//替换当前源
6、#yum update
到这就ok了
