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OS Install: PXE Boot
General Information
In order to install an OS via PXE boot, a TFTP and DHCP server are required.
Using PXE allows for clients to begin a network installation without any net-install ISO.
Checklist
- Distro: Enterprise Linux 7
- Installation Server Created (NFS/HTTP/FTP) that is hosting the install DVD and kickstart file
TFTP Server
- Install the required packages
yum install tftp-server xinetd
- Allow TFTP access (set disable = no)
vim /etc/xinetd.d/tftp service tftp { ....some other variables... disable = no ....some other variables... }
- Start and Enable xinetd
systemctl start xinetd systemctl enable xinetd
- Allow through firewall (if enabled)
firewall-cmd --permanent --add-service=tftp firewall-cmd --reload
DHCP Server
- Install required package
yum install dhcp
- Edit DHCP config and customize per your network
vim /etc/dhcp/dhcpd.conf subnet 192.168.1.0 netmask 255.255.255.0 { option routers 192.168.1.254 ; range 192.168.1.240 192.168.1.250 ; next-server 192.168.1.150 ; filename "pxelinux/pxelinux.0" ; }
- subnet ⇒ specify the network
- netmask ⇒ mask for your network
- option routers ⇒ gateway for the network
- range ⇒ start and ending IP to hand out via DHCP
- next-server ⇒ IP of the TFTP server
- filename ⇒ file that should be offered to systems doing PXE boot (relative to the TFTP server's root)