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PXE-capable computer
Most modern computers have the capability to network boot. Typically, a function key pressed during boot will bring up a boot selection menu. In environments designed for unattended administration, systems will often be configured to first attempt booting from the network, then boot from local storage, and the installation server is configured to only offer the installation when required. Your computer's manual will provide specific instructions on setting boot priorities.
DHCP Server
When a system requests an address during network booting, the DHCP server also provides the location of files to boot. A network should have only one DHCP server.
TFTP Server
Because the pre-boot environment is very simple, files must be provided in a very simple way. Trivial File Transfer Protocol, or TFTP, provides the system with the bootloader required to continue the installation process.
Bootloader
Because the job of booting an operating system is too complex for the pre-boot environment, a bootloader is used to load the kernel and related files. It also provides configuration information to the installer, and can offer a menu to select from different configurations.
Kernel and Initramfs
The kernel is the core of any Linux operating system, and the initramfs provides the kernel with required tools and resources. These files are also provided by tftp.
Package repository
A Fedora repository must be available for the installation. The example in this section uses the public Fedora mirrors as the repository source, but you can also use a repo on the local network provided by NFS, FTP, or HTTP. Repositories can be configured using the [option]#inst.repo=# boot option; see xref:advanced/Boot_Options.adoc#sect-boot-options-sources[Specifying the Installation Source] for details.
DHCP Server Configuration
Installing and configuring dhcpd
Install the dhcp server package.
# dnf install dhcp
Create a simple configuration for the dhcp server at `/etc/dhcp/dhcpd.conf`
subnet 192.168.1.0 netmask 255.255.255.0 {
authoritative;
default-lease-time 600;
max-lease-time 7200;
ddns-update-style none;
option domain-name-servers 192.168.1.1;
option routers 192.168.1.1;
}
Test your configuration and address any problems you discover.
[command]#systemctl start dhcpd#
[command]#journalctl --unit dhcpd --since -2m --follow#
Add entries to point clients to their bootloader and the server that provides it to your subnet configuration in `/etc/dhcp/dhcpd.conf`. Because DHCP clients provide the server with identifying information along with their address request, BIOS clients and UEFI clients can each be directed to the correct bootloader. Using latest processor architecture option codes, which may be found on the https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#processor-architecture[IANA DHCPv6] registration page, allows multiple architectures to share a single DHCP server.
# refer to RFC4578 & IANA DHCPv6 for possible arch option values
option arch code 93 = unsigned integer 16;
subnet 192.168.1.0 netmask 255.255.255.0 {
if option arch = 00:07 {
# x64 UEFI
filename "uefi/shimx64.efi";
next-server 192.168.1.2;
} else if option arch = 00:0b {
# aarch64 UEFI
filename "uefi/shimaa64.efi";
server-name "192.168.1.2";
} else {
filename "pxelinux.0";
next-server 192.168.1.2;
}
...
Restart the dhcp service to check the configuration and make changes as needed.
[command]#systemctl restart dhcpd#
[command]#journalctl --unit dhcpd --since -2m --follow#
Installing the tftp server
Install the tftp server package.
Installing the tftp server

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6058467 String information

Source string description
type: delimited block -
Flags
no-wrap, read-only
Source string location
./pages/advanced/Network_based_Installations.adoc:50
String age
4 years ago
Last updated
a year ago
Source string age
4 years ago
Translation file
pot/f33/pages/advanced/Network_based_Installations.pot, string 20