1. 配置Yum源及关闭SeLinux
[root@localhost ~]# mkdir /media/rhel
[root@localhost ~]# mount /dev/cdrom /media/rhel
mount: /dev/sr0 is write-protected, mounting read-only
[root@localhost ~]# vi /etc/yum.repos.d/iso.repo
[iso]
name=iso
baseurl=file:///media/rhel
enabled=1
gpgcheck=0
[root@localhost ~]# vi /e
