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2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >
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Introduction to PXE
PXE (Pre-boot Execution Environment, pre-boot execution environment) is a network boot technology developed by Inter, which works in Client/Server mode and allows clients to download boot images from remote servers over the network and load installation files or the entire operating system.
PXE remote installation server integrates Centos7 installation source, TFTP service, DHCP service, and can send PXE bootstrap, Linux kernel, boot menu and other data to the customer bare metal, as well as provide installation files.
Benefits of PXE remote installation
Scale: assemble multiple servers at the same time
Automation: install the system and configure various services
Remote implementation: no installation media such as CD, U disk and so on
Experimental process
1 configure the server with dual network cards, one chooses host-only mode, the other chooses NAT mode, the only host mode is that the server works in the local area network, assigns ip address, uses yum warehouse for NAT mode networking, and downloads software packages
2 download the software package tftp-server that provides TFTP services, the software package that provides dhcp, the vsftpd package that provides ftp services, and the package syslinux that provides PXE network installation bootstrap pxelinux.0
3 configure dhcp service
4 Mount the installation source, initialize the Linux kernel file, initialize the image file, and copy the PXE bootstrap program to the tftp root directory
/ etc/xinetd.d/tftp tftp configuration file
/ var/lib/tftpboot tftp service root directory
5 modify the tftp configuration file and create a startup menu file under the tftp change directory. Note that the file name cannot be changed.
6. Complete the configuration, enable various services, turn off the firewall, and enhance the security features.
7 remote installation, pay attention to the new virtual machine and select host-only mode
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