# 备份
# mv /etc/yum.repos.d/CentOS-Base.repo{,.bak}
# 修改
# vi /etc/yum.repos.d/CentOS-Base.repo

Config代码  

1. # CentOS-Base.repo  
2. #  
3. # The mirror system uses the connecting IP address of the client and the  
4. # update status of each mirror to pick mirrors that are updated to and  
5. # geographically close to the client. You should use this for CentOS updates  
6. # unless you are manually picking other mirrors.  
7. #  
8. # If the mirrorlist= does not work for you, as a fall back you can try the   
9. # remarked out baseurl= line instead.  
10. #  
11. #  
12.   
13. [base]  
14. name=CentOS-$releasever – Base  
15. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os  
16. baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/  
17. gpgcheck=1  
18. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  
19.    
20. #released updates   
21. [updates]  
22. name=CentOS-$releasever – Updates  
23. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates  
24. baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/  
25. gpgcheck=1  
26. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  
27.    
28. #additional packages that may be useful  
29. [extras]  
30. name=CentOS-$releasever – Extras  
31. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras  
32. baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/  
33. gpgcheck=1  
34. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  
35.    
36. #additional packages that extend functionality of existing packages  
37. [centosplus]  
38. name=CentOS-$releasever – Plus  
39. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus  
40. baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/  
41. gpgcheck=1  
42. enabled=0  
43. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  
44.    
45. #contrib – packages by Centos Users  
46. [contrib]  
47. name=CentOS-$releasever – Contrib  
48. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib  
49. baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/  
50. gpgcheck=1  
51. enabled=0  
52. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  

# 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 key

sudo 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.*.rpm

3，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

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