修改CentOS默認yum源爲國內yum鏡像源

修改CentOS默認yum源爲mirrors.163.com

1、首先備份系統自帶yum源配置文件/etc/yum.repos.d/CentOS-Base.repo

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

2、進入yum源配置文件所在的文件夾

cd /etc/yum.repos.d/

3、下載163的yum源配置文件到上面那個文件夾內

CentOS7

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

4、運行yum makecache生成緩存

 yum makecache

5、這時候再更新系統就會看到以下mirrors.163.com信息

 yum -y update

已加載插件：fastestmirror, refresh-packagekit, security
設置更新進程Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* extras: mirrors.163.com
* updates: mirrors.163.com

修改CentOS默認yum源爲mirrors.aliyun.com
1、首先備份系統自帶yum源配置文件/etc/yum.repos.d/CentOS-Base.repo

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

2、下載ailiyun的yum源配置文件到/etc/yum.repos.d/
CentOS7

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

3、運行yum makecache生成緩存

yum makecache

4、這時候再更新系統就會看到以下mirrors.aliyun.com信息

yum -y update

已加載插件：fastestmirror, refresh-packagekit, security
設置更新進程Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com