CentOS -配置yum源

CentOS  -配置yum源 

1 切换到yum目录

cd /etc/yum.repos.d/

2 创建一个备份文件夹

mkdir backup

3 把原配置都放进备份的文件

mv CentOS-* backup

4 下载阿里云YUM源配置文件

　　方式1 -用curl

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

　　方式2 -用wget(新建的不推荐用，要用到)

安装wget

yum install wget -y

用wget安装

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

5.如果出现了用yum install xxxxxx报错

sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo

然后重启网卡

systemctl restart network