下载ISO
mkdir /mnt/iso
wget -O /mnt/iso/CentOS-7-x86_64-Minimal-1908.iso http://mirrors.aliyun.com/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1908.iso
chmod 755 /mnt/iso/CentOS-7-x86_64-Minimal-1908.iso
安装vsftpd
yum -y install vsftpd
systemctl enable vsftpd
systemctl restart vsftpd
挂载
mkdir /var/ftp/minimal
mount /mnt/iso/CentOS-7-x86_64-Minimal-1908.iso /var/ftp/minimal/
yum
vim /etc/yum.repos.d/minimal.repo
[minimal]
name=minimal
baseurl=file:///var/ftp/minimal
enabled=1
gpgcheck=0
自动挂载
vim /etc/fstab
/mnt/iso/CentOS-7-x86_64-Minimal-1908.iso /var/ftp/minimal/ iso9660 loop,defaults 0 0
mount -a