pxe ubuntu livecd

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本文档介绍了如何通过网络启动Ubuntu 12.04 Live CD，包括设置NFS服务器、挂载Ubuntu镜像、配置Cobbler服务器等步骤。适用于希望实现无盘操作系统的用户。

Setting up PXE boot of Ubuntu 12.04 Live CD

INTRODUCTION

Sometimes it's nice to boot a complete operating system over a network, and not have to install to a drive or use a CD. This allows you to have diskless machines, or perform operations on an installed drive that can't be done whilst it is mounted.

This tutorial assumes you have already set up a cobbler pxe/dhcp server (see previous posts) and teaches you the final steps for adding a live ubuntu12 image. You will also need to have set up an nfs server.

Mount the ubuntu desktop image

sudo mount -o loop /my/iso/location.iso /mnt

Copy the contents (making sure to include the .disk directory) to your NFS location (this may be on another computer/server, so you may need to perform the previous step on that machine).

sudo cp -R /mnt/* /my/nfs/location/.
sudo cp -R /mnt/.disk/ /my/nfs/location/.

Add the distro to cobbler

sudo cobbler distro add \
--name=ubuntu-desktop-32 \
--kernel=/mnt/casper/vmlinuz \
--initrd=/mnt/casper/initrd.lz

If it is a initrd.gz file, you may have to run this on it first:

gunzip --decompress initrd.gz

Add a profile to cobbler

sudo cobbler profile add \
--name=ubuntu-desktop-32 \
--distro=ubuntu-desktop

Sync cobbler

sudo cobbler sync

Edit the pxelinux boot menu to add a few details (link the nfs)

sudo vi /var/lib/tftpboot/pxelinux.cfg/default

Add the following details to the ubuntu deskto part of the menu, and remove any unnecessary parts.