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This is a simple guide on how to setup boot-only ISO image that later will use HTTP server as installation source. HTTP Configuration 1. Download the full DVD ISO image and mount it. # mount rhel-server-7.4-x86_64-dvd.iso /mnt/isoprep 2. Install the HTTP and allow firewalld service. # yum install httpd -y # firewall-cmd --permanent --add-service=http # firewall-cmd --reload 3. Create document directory to host the installation source. # mkdir /var/www/html/rhel7 4. Copy the ISO installer to http document directory  (including hidden file). # cp -ravf /mnt/isoprep/* /var/www/html/rhel7 The directory will look like this: [root@ocp html]# tree -L 2 . `-- rhel7     |-- addons     |-- EFI     |-- EULA     |-- extra_files.json     |-- GPL     |-- images     |-- isolinux     |-- LiveOS     |-- media.repo     |-- my.ks     |-- Packages     |-- repodata     |-- RPM-GPG-KEY-redhat-beta     |-- RPM-GPG-KEY-redhat-release     `-- TRANS.TBL 8 directories, 8 fi