1、yum repolist
2, https: //opsx.alibaba.com/mirror, under the first mirror in the yum, Pick source epel
epel-release-latest-7.noarch.rpm
3, rpm -ivh epel-release-latest-7.noarch.rpm # installation source
4, this time to see epel source has been installed, if we do not apply the source bash, bash source can be modified or removed name mv CentOS-Base.repo CentOS-Base.repo.bak
5, mkdir -p / media / cdrom # New Directory
6, mount / dev / sr0 / media / cdrom / # local source mounted in the directory
7, df -h # View the local source directory is mounted successfully
/dev/sr0 8.1G 8.1G 0 100% /media/cdrom
8, mounted on the need to modify /etc/yum.repos.d/ CentOS-Media.repo information in the source file in the local source profile, open follows
[c7-media]
name=CentOS-$releasever - Media
baseurl=file:///media/CentOS/
file:///media/cdrom/
file:///media/cdrecorder/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Modified
[c7-media] name=CentOS-$releasever - Media baseurl=file:///media/cdrom/ gpgcheck=0 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
9, yum repolist # View system uses source
10, yum makecache # Finally, the source create a cache for a faster
11, if the local source is provided automatically mount the boot, it is necessary / etc / fstab add / dev / sr0 automatically mounted
/dev/mapper/centos-root / ext4 defaults 1 1
UUID=0cceaf55-a63f-4f0c-97c7-305c848781bc
/boot
ext4 defaults 1 2
/dev/mapper/centos-data
/data
ext4 defaults 1 2
/dev/mapper/centos-swap
swap swap defaults 0 0
/dev/sr0 /media/cdrom iso9660 defaults 0 0光盘文件类型为 iso9660