CentOS 8 yum源 /etc/yum.repos.d/base.repo

[base]
name=base
baseurl=https://mirrors.aliyun.com/centos/$releasever/BaseOS/$basearch/os/
https://mirrors.cloud.tencent.com/centos/$releasever/BaseOS/$basearch/os/
https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/BaseOS/$basearch/os/
gpgcheck=0

[AppStream]
name=AppStream
baseurl=https://mirrors.aliyun.com/centos/$releasever/AppStream/$basearch/os/
https://mirrors.cloud.tencent.com/centos/$releasever/AppStream/$basearch/os/
https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/AppStream/$basearch/os/
gpgcheck=0

[epel]
name=epel
baseurl=http://mirrors.aliyun.com/epel/$releasever/Everything/$basearch/
https://mirrors.cloud.tencent.com/epel/$releasever/Everything/$basearch/
https://mirrors.tuna.tsinghua.edu.cn/epel/$releasever/Everything/$basearch/
gpgcheck=0