yum源配置

備份目錄/etc/yum.repos.d/下全部文件到其餘目錄

baseurl爲網站內repodata文件夾所在路徑

[epel]

name=epel

baseurl=https://mirrors.aliyun.com/epel/$releasever/$basearch                                             

enabled=1

gpgcheck=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7

寫入/etc/yum.repos.d/epel.repo

 /dev/sr0  /misc/cd  iso9660 defaults  0 0寫入/etc/fstab實現光盤自動掛載

[c7-media]

name=CentOS-$releasever - Media

baseurl=file:///misc/cd/

gpgcheck=1

enabled=1

gpgkey=file:///misc/cd/RPM-GPG-KEY-CentOS-7

寫入/etc/yum.repos.d/CentOS-Media.repo