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Chapter 3 Starting Up
3.17 Installing the OS
After creating the installation DVD, install the OS from the network using the PXE server. Install it
according to
Installing the OS From the Network
The following is the procedure for installing the OS from the network.
Remarks
The MAC address information for each node is required for OS installation. Before starting this procedure,
connect the console to each node, and execute the showinfo command to obtain the MAC address.
1.
Configure the PXE server.
Configure the TFTP server and DHCP server. For details, see "Preparing to install from the network
using PXE" and "Configuring a TFTP server for UEFI-based clients" in Performing an advanced RHEL
installation on the Red Hat, Inc. website
enterprise_linux/8/html/performing_an_advanced_rhel_installation/index).
To configure the TFTP server, set grub.cfg.
To connect the console, add the following kernel option to the grub.cfg configuration file.
earlycon=pl011,0x1c050000 console=ttyAMA0
Example: grub.cfg
menuentry 'install' {
linux uefi/RHEL8GA/vmlinuz ip=dhcp inst.repo=http://172.23.220.1/
pxinst/repos/RHEL8GA inst.text earlycon=pl011,0x1c050000
console=ttyAMA0
initrd uefi/RHEL8GA/initrd.img
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}
2.
Prepare a kickstart file.
Configure an HTTP server, and set the kickstart file.
For details, see "Making a Kickstart file available on an HTTP or HTTPS server" in Performing an
advanced RHEL installation on the Red Hat, Inc. website
en-us/red_hat_enterprise_linux/8/html/performing_an_advanced_rhel_installation/index).
To connect the console, add the following parameter to "bootloader --append=" in the kickstart file.
earlycon=pl011,0x1c050000 console=ttyAMA0
Example:
bootloader --append="crashkernel=auto earlycon=pl011,0x1c050000
console=ttyAMA0" --location=mbr --boot-drive=nvme0n1
3.
Connect the console.
To check the status of the node where you want to install the OS, connect the console to the node.
For the console connection to the node, use an ssh connection to the BMC.
The port number is 9000 + node number.
Example:For node 1
"Installing the OS From the
9000 + 1 = 9001
Network."
(https://access.redhat.com/documentation/en-us/red_hat_
(https://access.redhat.com/documentation/
53
C120-0089-03EN
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