Centos8.4 配置本地镜像yum源

1、挂载iso镜像到/mnt

2、修改/etc/yum.repos.d/下面的repo文件，修改为如下：

[baseos]
name=CentOS Linux $releasever - baseOS
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=baseOS&infra=$infra
#baseurl=http://mirror.centos.org/$contentdir/$releasever/baseOS/$basearch/os/
baseurl=file:///mnt/baseOS
gpgcheck=0
enabled=1



[appstream]
name=CentOS Linux $releasever - AppStream
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra
#baseurl=http://mirror.centos.org/$contentdir/$releasever/AppStream/$basearch/os/
baseurl=file:///mnt/AppStream
gpgcheck=0
enabled=1
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial