CentOS 8 更换yum源
首先备份原来的yum源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
接着下载yum源
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
然后清除缓存
yum clean all && yum makecache
哦吼，这时会发现有报错，换源失败
下面是亲测centos8换源成功方法
首先备份下原来的文件
rename \'.repo\' \'.repo.bak\' /etc/yum.repos.d/*.repo
然后下载yum源
wget https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo -O /etc/yum.repos.d/Centos-vault-8.5.2111.repowget https://mirrors.aliyun.com/repo/epel-archive-8.repo -O /etc/yum.repos.d/epel-archive-8.repo
最后清除更新缓存
yum clean all && yum makecache
测试OK换源成功！
