CentOS Stream 8 EOL停更后更换YUM源

CentOS Stream 8已经于2024年5月1日EOL，所以mirrorlist.centos.org域名已经无法解析，所以源要换成归档后的地址。

CentOS Stream 8 - AppStream                                                                                                                                                                                                                   0.0  B/s |   0  B     00:00    
Errors during downloading metadata for repository 'appstream':
  - Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]
Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8-stream&arch=x86_64&repo=AppStream&infra=stock [Could not resolve host: mirrorlist.centos.org]

替换源地址：

sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org/$contentdir|baseurl=http://archive.kernel.org/centos-vault|g' -i.bak /etc/yum.repos.d/CentOS-Stream-AppStream.repo /etc/yum.repos.d/CentOS-Stream-BaseOS.repo /etc/yum.repos.d/CentOS-Stream-Extras.repo /etc/yum.repos.d/CentOS-Stream-Extras-common.repo /etc/yum.repos.d/CentOS-Stream-PowerTools.repo