修改CentOS默认yum源为国内yum镜像源

1、首先备份系统自带yum源配置文件/etc/yum.repos.d/CentOS-Base.repo


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​​[root@localhost ~]​​​​# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup​​



2、进入yum源配置文件所在的文件夹


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​​[root@localhost ~]​​​​# cd /etc/yum.repos.d/​​


3、下载163的yum源配置文件到上面那个文件夹内

CentOS7


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​​[root@localhost yum.repos.d]​​​​# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo​​



CentOS6


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​​[root@localhost yum.repos.d]​​​​# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo​​



CentOS5


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​​[root@localhost yum.repos.d]​​​​# wget http://mirrors.163.com/.help/CentOS5-Base-163.repo​​



4、运行yum makecache生成缓存


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​​[root@localhost yum.repos.d]​​​​# yum makecache​​

提示另外一个程序已经存在

linux修改yum源镜像源_yum源

linux修改yum源镜像源_centos_02

使用kill -9 进程ID杀掉线程。再运行一次​​yum makecache​​

linux修改yum源镜像源_yum源_03



5、这时候再更新系统就会看到以下mirrors.163.com信息


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​​[root@localhost yum.repos.d]​​​​# yum -y update​​​​已加载插件：fastestmirror, refresh-packagekit, security​​​​设置更新进程Loading mirror speeds from cached hostfile​​​​* base: mirrors.163.com​​​​* extras: mirrors.163.com​​