Centos更换为阿里源

1.备份

1. mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2.下载新的CentOS-Base.repo到/etc/yum.repos.d/

1. #CentOS 5
3. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
5. #CentOS 6
7. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
9. #CentOS 7
11. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

更改CentOS-Media.repo使其为不生效：

1. vim /etc/yum.repos.d/CentOS-Media.repo

1. # CentOS-Media.repo
2. #
3. # This repo can be used with mounted DVD media, verify the mount point for
4. # CentOS-6. You can use this repo and yum to install items directly off the
5. # DVD ISO that we release.
6. #
7. # To use this repo, put in your DVD and use it with the other repos too:
8. # yum --enablerepo=c6-media [command]
9. #
10. # or for ONLY the media repo, do this:
11. #
12. # yum --disablerepo=\* --enablerepo=c6-media [command]
14. [c6-media]
15. name=CentOS-$releasever - Media
16. baseurl=file:///media/CentOS/
17. file:///media/cdrom/
18. file:///media/cdrecorder/
19. gpgcheck=1
20. enabled=1
21. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
22. ~

3.运行yum makecache生成缓存

1. yum clean all
2. yum makecache