-------------------------------------------

centos

[root@localhost /]#mkdir /iso

[root@localhost /]#mkdir -p /mnt/cdrom

[root@localhost /]#mount-o loop /iso/*.iso /mnt/cdrom

--------------------------------------------

CentOS7.x本地Yum环境配置

#/etc/yum.repos.d/CentOS-Media.repo

# CentOS-Media.repo

#

# This repo can be used with mounted DVD media, verify the mount point for

# CentOS-7. You can use this repo and yum to install items directly off the

# DVD ISO that we release.

#

# To use this repo, put in your DVD and use it with the other repos too:

# yum --enablerepo=c7-media [command]

#

# or for ONLY the media repo, do this:

#

# yum --disablerepo=\* --enablerepo=c7-media [command]

#[development]

[c7-media]

name=CentOS-$releasever - Media

baseurl=

gpgcheck=1

enabled=1

gpgkey=

centos7.x yum setup

--------------------------------------------

CentOS8.x本地Yum环境配置

#/etc/yum.repos.d/CentOS-Linux-Media.repo

[super@localhost yum.repos.d]$ cat CentOS-Linux-Media.repo

# CentOS-Linux-Media.repo

#

# You can use this repo to install items directly off the installation media.

# Verify your mount point matches one of the below file:// paths.

[media-baseos]

name=CentOS Linux $releasever - Media - BaseOS

baseurl=

gpgcheck=1

enabled=1

gpgkey=

[media-appstream]

name=CentOS Linux $releasever - Media - AppStream

baseurl=

gpgcheck=1

enabled=1

gpgkey=

-------------------------------------------

RedHat8.x本地Yum环境配置

#/etc/yum.repos.d/redhat.repo

#

# Certificate-Based Repositories

# Managed by (rhsm) subscription-manager

#

# *** This file is auto-generated. Changes made here will be over-written. ***

# *** Use "subscription-manager repo-override --help" if you wish to make changes. ***

#

# If this file is empty and this system is subscribed consider

# a "yum repolist" to refresh available repos

[media-baseos]

name=RedHat Linux $releasever - Media - BaseOS

baseurl=

enabled=1

gpgcheck=1

gpgkey=

[media-appstream]

name=RedHat Linux $releasever - Media - AppStream

baseurl=

enabled=1

gpgcheck=1

gpgkey=

centos8.x yum setup

--------------------------------------------

测试：

[root@localhost /]#yum list

[root@localhost /]#dnf list