阿里云Linux安装镜像源地址:http://mirrors.aliyun.com/
CentOS系统更换软件安装源
一、备份你的原镜像文件,以免出错后可以恢复。
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| mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
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二、下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/
2.1 CentOS 5
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
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2.2 CentOS 6
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
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2.3 CentOS 7
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| wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
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三、运行 yum makecache 生成缓存
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| yum clean all yum makecache
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