CentOS7.2 创建本地YUM源

CentOS Linux release 7.2.1511 (Core) Minimal Install。
写这个博客主要是因为我配置时候出了次错误，解决方案是把/etc/yum.repos.d/清除干净即可（错误提示failure）

mkdir /mnt/yum-iso
mount /dev/cdrom /mnt/yum-iso/
mount: /dev/sr0 is write-protected, mounting read-only
mkdir /yum/
cp -a /mnt/yum-iso/ /yum/

//备份、移除其他repo

cd /etc/yum.repos.d/
tar zcvf repo-bk.tar.gz CentOS-*
rm -f CentOS-*(以前误删过一次，可以在网上搜索repo，winscp粘贴即可)

vi CentOS-Media.repo

[c7-media]
name=CentOS-$releasever - Media
baseurl=file:///yum/yum-iso/
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

//配置repo路径、关闭gbp校验、启用这个repo

制作cache

yum clean all

Loaded plugins: fastestmirror
Cleaning repos: c7-media
Cleaning up everything
Cleaning up list of fastest mirrors

yum makecache

Loaded plugins: fastestmirror
c7-media | 3.6 kB 00:00:00
(1/4): c7-media/group_gz | 155 kB 00:00:00
(2/4): c7-media/primary_db | 2.8 MB 00:00:00
(3/4): c7-media/filelists_db | 2.9 MB 00:00:00
(4/4): c7-media/other_db | 1.2 MB 00:00:00
Determining fastest mirrors
Metadata Cache Created