centos下使用国内的镜像yum源地址

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国内镜像源

aliyun镜像

http://mirrors.aliyun.com

163镜像源

http://mirrors.163.com

中国科技大学

http://mirrors.ustc.edu.cn

centos官方站点

http://mirrorlist.centos.org

centos6.5的CentOS-Base.repo配置，修改的时候可以备份一份。

使用cp命令备份

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

将$releasever 替换为版本号7，原因镜像源$releasever识别不了版本，6的版本无了，手动改为7

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[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#released updates 
[updates]
name=CentOS-$releasever - Updates 
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.163.com/centos/7/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras 
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.163.com/centos/7/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus 
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib 
#mirrorlist=http://mirrorlist.centos.org/?release=releasever$&arch=$basearch&repo=contrib
baseurl=http://mirrors.163.com/centos/7/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

清除缓存

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yum clean all

更新缓存

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yum makecache