# CentOS-Base.repo
#
# 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=$basearch&repo=os
baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6

yum clean all

# yum makecache #
将服务器上的软件包信息缓存到本地,以提高搜索安装软件的速度

# yum install vim* #
测试域名是否可用
附：增加RPMforge源
1，download the rpmforge package:http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm
2，Install DAG's GPG keysudo rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt如果上面出现错误，确认下：sudo rpm -K rpmforge-release-0.5.2-2.el6.rf.*.rpm3，sudo rpm -i rpmforge-release-0.5.2-2.el6.rf.*.rpm
4，试试看：sudo yum install htop
开始更新系统：yum update

1.首先，打开终端，获取root权限
2.关闭fastestmirror插件
vi /etc/yum/pluginconf.d/fastestmirror.conf
将其中的enable=1选项更改为enable=0
保存并退出
3.然后 cd /etc/yum.repos.d/
备份原来的源 mv CentOS-Base.repo ./CentOS-Base.repo.back
mv CentOS-Media.repo ./CentOS-Media.repo.back
4.获取网易的centos5的源配置文件 (这里务必要确保你的centos已经连上了Internet)
wget http://mirrors.163.com/.help/CentOS-Base-163.repo
5.获取配置文件后，执行
yum makecache
来更新yum数据库
6.执行
yum update
来更新centos
若想要更新为sohu的源，将第4步改为
wget http://mirrors.sohu.com/help/CentOS-Base-sohu.repo
好了！尽情享受yum带来的无尽的乐趣吧！！！

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo