163的开源镜像地址 http://mirrors.163.com/.help/CentOS-Base-163.repo 不同版本见 http://mirrors.163.com/.help/centos.html

sohu的开源镜像地址 http://mirrors.sohu.com/help/CentOS-Base-sohu.repo 不同版本见 http://mirrors.sohu.com/help/centos.html (只支持4, 5版本)

中国科技大学 http://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=2 不同版本见 http://lug.ustc.edu.cn/wiki/mirrors/help/centos

如果使用上面YUM源的话,最好把里面的 mirrorlist 注释掉,否则系统会启动 fastesmirror 插件自动检查的,并不一定会使用这个yum源的.

我用的是中国科技大学的速度不错。

法一：直接下载源文件

CentOS USTC mirror 这个镜像不错，大家更新可用这个

#yum -y install wget #cd /etc/yum.repos.d #mv CentOS-Base.repo  CentOS-Base.repo.save #wget http://centos.ustc.edu.cn/CentOS-Base.repo #yum makecache

注意：如果为第一次安装的新系统的话，则需要先安装wget这个下载软件，不然没有办法下载ＣentOS-Base.repo这个文件的。

法二：手动创建源文件

更改yum镜像站点为中国站点地址,推荐 http://centos.ustc.edu.cn/centos/。(中国科技大学)

#cd /etc/yum.repos.d/

#mv CentOS-Base.repo CentOS-Base.repo.bak

#vi CentOS-Base.repo

修改 /etc/yum.repos.d/CentOS-Base.repo 如下：

#———————————–分割线以内的———————————————–

# CentOS-Base.repo

# This file uses a new mirrorlist system developed by Lance Davis for CentOS. # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client.  You should use this for CentOS updates # unless you are manually picking other mirrors.

# If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead.

[base] name=CentOS-$releasever – Base #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os baseurl=http://centos.ustc.edu.cn/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

#released updates [updates] name=CentOS-$releasever – Updates #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates baseurl=http://centos.ustc.edu.cn/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

#packages used/produced in the build but not released [addons] name=CentOS-$releasever – Addons #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=addons baseurl=http://centos.ustc.edu.cn/centos/$releasever/addons/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

#additional packages that may be useful [extras] name=CentOS-$releasever – Extras #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras baseurl=http://centos.ustc.edu.cn/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

#additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever – Plus #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus baseurl=http://centos.ustc.edu.cn/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

#———————————–分割线以内的———————————————–

简单的说就是把mirrorlist注释掉，将baseurl改成 centos.ustc.edu.cn 的镜像地址。

用下面命令测试:

# yum upgrade #yum makecache

• Centos