CentOS系统更换yum软件安装源（此处以网易为例）

第一步：备份你的原镜像文件，以免出错后可以恢复。

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

第二步：下载新的CentOS-Base.repo 到/etc/yum.repos.d/

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo

如果无法下载可copy下面的PS内容
 

第三步：修改gpgkey

gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6，之前的用 “#” 注释

第四步：运行yum makecache生成缓存

yum clean all

yum makecache

本人亲测可以达到5M/s，实际情况根据个人网速。

PS:本日列出已经配置好的repo，大家可以直接复制内容到/etc/yum.repos.d/CentOS-Base.repo 即可使用。

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. [base]

13. name=CentOS-$releasever - Base - 163.com

14. baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/

15. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os

16. gpgcheck=1

17. #gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

18. gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6

19. #released updates

20. [updates]

21. name=CentOS-$releasever - Updates - 163.com

22. baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/

23. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates

24. gpgcheck=1

25. #gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

26. gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6

27. #additional packages that may be useful

28. [extras]

29. name=CentOS-$releasever - Extras - 163.com

30. baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/

31. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras

32. gpgcheck=1

33. #gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

34. gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6

35. #additional packages that extend functionality of existing packages

36. [centosplus]

37. name=CentOS-$releasever - Plus - 163.com

38. baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/

39. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus

40. gpgcheck=1

41. enabled=0

42. #gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

43. gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6

44. #contrib - packages by Centos Users

45. [contrib]

46. name=CentOS-$releasever - Contrib - 163.com

47. baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/

48. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib

49. gpgcheck=1

50. enabled=0

51. #gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

52. gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6