Overview of PXE and detailed Linux usage

PXE the overview and use of the detailed

Now the enterprise procurement of many computers are not optical drives, how to install the system? In addition, how can you quickly and massively install Linux server operating system, is there any good way?

The answer is yes, that's what this article says: PXE

PXE (Preboot Execute Environment, pre-Boot execution Environment ) is the latest technology developed by Intel Corporation and works on Client/server network mode, support Workstations download images from remote servers over the network and support booting over the network Operating System , during the boot process, the terminal requires the server to assign IP address, then TFTP(trivial filetransfer protocol) or mtftp (multicasttrivial file transfer Protocol) protocol to download a boot software package into native memory executed by this boot package to complete the terminal (customer) basic software setup, thus booting the terminal operating system pre-installed in the server

The whole installation process is this:

PXE nic Boot =>dhcp get IP address = download from TFTP pxelinux.0,vmlinuz ,initr.img and so on - boot system into the installation step = Download The Ks.cfg file via PEX Linux and follow the data ks.cfg Automation Installation System = Complete

Experimental cases:

How to configure PXE:

1. Configure DHCP

2. Configuring the TFTP server

3, to provide the working environment of PEX

4, provide boot kernel and other files

5, provide the installation source, based on the HTTP service implementation

6. Provide ks.cfg file

1 , configure DHCP Service

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installation DHCP Service

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View installation of the DHCP installation package

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then look at the dhcp.conf Master profile, open to see a few lines of comment information, comment information to provide a detailed configuration template in /usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample , Copy the/usr/share/doc/dhcp-4.1.1/dhcpd.conf.sample and overwrite the/etc/dhcp/dhcpd.conf file

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then edit the DHCP master profile, configure the file to assign address segment (subnet), subnet mask (netmask), assign address segment (range), default gateway ( option Routers), the IP address that points to the next server (next-server), and the configuration file (filename) to be extracted in the next server

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then start the DHCP service, and if there is an error during startup, you can use the method of viewing the log for troubleshooting (for example:tail-20/var/log/message Generally view the file's last You know where you're wrong.

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Use SS–UNL command to view the port number, The DHCP service has a port number of "$" tosee if the DHCP service is open and in a listening state

2 , configuring tftp Service

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installing the TFTP service side

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after installation, look at the Tftpboot folder, which is later used by the file transfer service.

3 , providing PEX The working Environment

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To see if the Syslinux installation package is installed

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use the rpm–ql syslinux command to view the installation and locate the pxeliux.0 file

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then copy the command to copy the/usr/share/syslinux/pxrlinux.0 file into the Tftpboot

4. provide boot files such as kernel

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Mount the system CD, extract the boot file

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Copy the boot file from the system CD

re-use chmod–r 755/var/lib/tftpboot/ command to Tftpboot Directory Add Permissions

5. provide installation source

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Install the HTTP service first, and then create the CENTOS6 directory under the var/www/html/directory as the installation source

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Open the HTTP service

6 , provide ks.cfg file

install Kickstart using yum install System-config-kickstart

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Then use the command to open kickstart

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Be sure to change Root password, otherwise you will not be able to enter the system

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Then generate the template file

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View the generated ks.cfg file

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Edit Ks.cfg File

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edit The ks.cfg file, change the next partition information and the installation source for automatic installation

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Then view the installation source information

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edit The/var/lib/tftbboot/default file, point to the KS file for automated installation

7. Verifying PXE Setup

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Change the boot boot entry on the client to start with the network card as the first boot entry, and then you can implement the PXE automatic installation, which completes the experiment

This article is from the "Learn ing" blog, please be sure to keep this source http://nydia.blog.51cto.com/6404696/1533425