1.阿里

1.1備份當前的yum源

mv /etc/yum.repos.d /etc/yum.repos.d.backup

1.2下載新的CentOS-Base.repo 到/etc/yum.repos.d/

CentOS 5

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo 

CentOS 6

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 7

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

1.3 清空並生成快取

yum clean all

yum makecache

2.網易

2.1備份當前的yum

源

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

2.2 下載對應版本repo檔案, 放入/etc/yum.repos.d/

http://mirrors.163.com/.help/CentOS7-Base-163.repo

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

http://mirrors.163.com/.help/CentOS5-Base-163.repo

2.3執行以下命令生成快取

yum clean all

yum makecache

3. 中科大

3.1首先備份CentOS-Base.repo

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

3.2下載對應版本的CentOS-Base.repo, 放入/etc/yum.repos.d/

Centos5

https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=1

Centos6

https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=2

Centos7

https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=3

3.3執行以下命令生成快取

yum clean all

yum makecache