配置redhat9阿里源

vim /etc/yum.repo/aliyun_yum.repo

[ali_baseos]
name=ali_baseos
baseurl=https://mirrors.aliyun.com/centos-stream/9-stream/BaseOS/x86_64/os/
gpgcheck=0

[ali_appstream]
name=ali_appstream
baseurl=https://mirrors.aliyun.com/centos-stream/9-stream/AppStream/x86_64/os/
gpgcheck=0

yum makecache