1.備份

sudo mv /etc/yum.repos.d/centos.repo /etc/yum.repos.d/centos.repo.backup
sudo mv /etc/yum.repos.d/centos-addons.repo /etc/yum.repos.d/centos-addons.repo.backup

2.創建新文件

vi /etc/yum.repos.d/centos.repo[baseos]
name=CentOS Stream $releasever - BaseOS
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/BaseOS/$basearch/os/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
countme=1
enabled=1[appstream]
name=CentOS Stream $releasever - AppStream
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/AppStream/$basearch/os/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
countme=1
enabled=1

3.更新 YUM 緩存

sudo yum clean all
sudo yum makecache

4. 驗證配置

sudo yum update