Howto Setup Yum repositories ISO CDROM

Q : How do you use yum to update / install packages from an ISO of CentOS / FC / RHEL CD?

Solution 1 : Use your DVD directly without creating any repo

1. Mount the ISO file
   # mkdir /media/cdrom
   # mount /dev/sr0 /media/cdrom
2. Create config file
   # vi /etc/yum.repos.d/iso.repo
   
   [dvd]
   baseurl=file:///media/cdrom
   enabled=1
   gpgcheck=0
3. Run the command
   # yum install --enablerepo=dvd packagename

Solution 2 : Creation of yum repositories is handled by a separate tool called createrepo, which generates the necessary XML metadata. If you have a slow internet connection or collection of all downloaded ISO images, use this hack to install rpms from iso images

1. Step # 1: Mount an ISO file
   # rpm -i createrepo*
   # mkdir /media/cdrom
   # mount /dev/sr0 /media/cdrom
2. Step # 2: Create a repository
   # mkdir /tmp/repo
   # cd /mnt/iso
   # createrepo -o /tmp/repo .
3. Step # 3: Create config file
   # vi /etc/yum.repos.d/iso.repo
   
   Append following text:
   [ISO Repository]
   baseurl=file:///media/cdrom
   enabled=1

Now use yum command to install packages from ISO images:
# yum install package-name