4.2. Automatic Installation

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/installation_guide/sect-simple-install-kickstart

This section describes a simple procedure on how to add a Kickstart file to the installation USB drive, which automatically installs and registers Red Hat Enterprise Linux. You can use this procedure to deploy Red Hat Enterprise Linux on multiple machines. Generating the USB Boot Media Record an installation in a Kickstart file: Manually install Red Hat Enterprise Linux once. For details see Section 4.1, “Interactive Installation”. Boot the installed system. During the installation, Anaconda created a Kickstart file with the settings in the /root/anaconda-ks.cfg file. Download the Red Hat Enterprise Linux installation DVD ISO file to the /tmp/ directory. Mount the installation ISO file to the /mnt/ directory. For example:

mount -o loop /tmp/rhel-server-7.3-x86_64-dvd.iso /mnt/

Copy to Clipboard Create a working directory and copy the DVD content to it. For example:

mkdir /root/rhel-install/

shopt -s dotglob

cp -avRf /mnt/* /root/rhel-install/

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Unmount the ISO file:

umount /mnt/

Copy the Kickstart file generated during the installation to the working directory:

cp /root/anaconda-ks.cfg /root/rhel-install/

Copy to Clipboard To register Red Hat Enterprise Linux after the installation automatically and attach a subscription, append the following to the /root/rhel-install/anaconda-ks.cfg file: %post subscription-manager register –auto-attach –username=user_name –password=password %end Show more

Toggle word wrap Display the installation DVD volume name:

isoinfo -d -i rhel-server-7.3-x86_64-dvd.iso | grep “Volume id” | \

sed -e ‘s/Volume id: //’ -e ‘s/ /\x20/g’ RHEL-7.3\x20Server.x86_64 Show more

Add a new menu entry to the boot /root/rhel-install/isolinux/isolinux.cfg file that uses the Kickstart file. For example: ####################################### label kickstart menu label ^Kickstart Installation of RHEL7.3 kernel vmlinuz

append initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7.3\x20Server.x86_64 inst.ks=hd:LABEL=RHEL-7.3\x20Server.x86_64:/anaconda-ks.cfg ####################################### Show less

Note

Set the inst.stage2=hd:LABEL= and inst.ks=hd:LABEL= options to the DVD volume name retrieved in the previous step. Before you create the /root/rhel-ks.iso file from the working directory, execute the following steps for a USB UEFI boot or for a CDROM UEFI boot: For a USB UEFI boot, follow the steps: Mount the volume:

mount /root/rhel-install/images/efiboot.img /mnt/

Edit the file /mnt/EFI/BOOT/grub.cfg: Add a new menu entry: ####################################### ‘Kickstart Installation of RHEL-7.3’ –class fedora –class gnu-linux –class gnu –class os { linuxefi /images/pxeboot/vmlinuz inst.stage2=hd:LABEL=RHEL-7.3\x20Server.x86_64 inst.ks=hd:LABEL=RHEL-7.3\x20Server.x86_64:/anaconda-ks.cfg initrdefi /images/pxeboot/initrd.img } ####################################### Show more

Unmount the volume: # umount /mnt

For a CDROM UEFI boot, follow the steps: Edit the file /root/rhel-install/EFI/BOOT/grub.cfg: Add a new menu entry to the file: ####################################### ‘Kickstart Installation of RHEL-7.3’ –class fedora –class gnu-linux –class gnu –class os { linuxefi /images/pxeboot/vmlinuz inst.stage2=hd:LABEL=RHEL-7.3\x20Server.x86_64 inst.ks=hd:LABEL=RHEL-7.3\x20Server.x86_64:/anaconda-ks.cfg initrdefi /images/pxeboot/initrd.img } ####################################### Show more

Create the /root/rhel-ks.iso file from the working directory:

mkisofs -untranslated-filenames -volid “RHEL-7.3 Server.x86_64” -J -joliet-long -rational-rock -translation-table -input-charset utf-8 -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e images/efiboot.img -no-emul-boot -o /root/rhel-ks.iso -graft-points /root/rhel-install/

Note

Set the -V option to the DVD volume name retrieved in an earlier step and replace \x20 in the string with a space. Make the ISO image created by the command mkisofs bootable:

isohybrid –uefi /root/rhel-ks.iso

Create an installation USB drive. For details, see Section 3.2.1, “Making Installation USB Media on Linux”. Install Red Hat Enterprise Linux Using the Kickstart File Boot the installation USB drive. See Chapter 7, Booting the Installation on 64-bit AMD, Intel, and ARM systems. Select the entry with the Kickstart configuration that you created in Section 4.2, “Automatic Installation”.

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