X Windows Terminal

Running a single application

To get started I have my server setup running FreeBSD, with X-Windows and a few applications. Nothing too special. Then I have my client PC, which to start off I used the freesbie 1.1 boot CD to perform these initial tests. You can get this from www.freesbie.org. I entered into fluxbox, but you could equally use xfce4.

client# xhost +

This allows all computers to start applications on your client PC. It's dangerous but good for testing everything is setup correctly.

client# ssh <server user@server ip>

eg: ssh mick@192.168.1.1

ssh$ DISPLAY=<client ip>:<client display>; export DISPLAY

eg: DISPLAY=192.168.1.2:0; export DISPLAY

ssh$ xcalc &

This should display on your client

Running a whole X Windows Session (XDM)

server

edit: /usr/X11R6/lib/X11/xdm/xdm-config

comment out with a '!' the request line
DisplayManager.requestPort: 0

edit:
/usr/X11R6/lib/X11/xdm/Xaccess

to have a single asterisk any where in the file, so the contents should be one asterisk and the rest commented out.

Make sure your firewall has all traffic for you lan. (Need to know which exact ports to allow).

create ~/.xsession for each user which requires access and enter your start up for x eg:

shell#!/bin/sh
startkde

run xdm on server as root

client

make sure your not in X

type this command:

shell# X -broadcast

This assumes that you are running only one server. Otherwise use:

shell# X -query 192.168.1.2

GRUB Floppy boot

(would like to compile this ourselves later) To get started we downloaded the image from www.hp.uab.edu/~ed/grub-net

shell# dd if=/data/grub-net.img of=/dev/fd0

Then we mounted it as msdos Remove/rename menu.1st from the grub directory as it was doing something funny with it. We think that it was looking for a tftp server through our dhcp and we don't have a the dhcp setup correctly here, so we wanted to do it manually.

Reboot off the floppy now..

grub> ifconfig --address=192.168.1.2 --mask=255.255.255.0 --gateway=192.168.1.1 --server=192.168.1.2

OR you can use dhcp
grub> dhcp
grub> tftpserver 192.168.1.2

Setup tftp on your server, we created a directory /tftpboot.

Install and setup dhcp

install /usr/ports/net/isc-dhcp3-server

We do this so we can define the root path for the diskless system.

edit /usr/local/etc/dhcpd.conf

option domain-name "iinet.net.au";
option domain-name-servers 203.0.178.191;

# The shared root file system of diskless workstation
option root-path "192.168.1.2:/diskless_ro";

# The server from which to upload the initial boot-file (loads tftp server)
next-server 192.168.1.2;

default-lease-time 3600;
max-lease-time 86400;
ddns-update-style none;

subnet 192.168.1.0 netmask 255.255.255.0 {
        range 192.168.1.10 192.168.1.30;

        # Set up default gateway
        option routers 192.168.1.1;
}

shell# dhcpd

Setting NFS

# mkdir /diskless_ro
# chmod 444 /diskless_ro

# mkdir /diskless_rw
# chmod 777 diskless_rw

Make directories for each IP for your clients

# cd /diskless_rw
# mkdir 192.168.1.XXX
# cd 192.168.1.XXX
# mkdir etc var

Starting diskless system through GRUB

These commands are half working...
grub> root (nd)
grub> kernel /kernel root=ad0s1a
grub> pxeboot

Completely Diskless System (PXEBOOT ROM)

Running completely diskless by booting from a Network ROM Chip.

Coming soon...

links

http://www.nber.org/sys-admin/FreeBSD-diskless.html

http://www.onlamp.com/pub/a/bsd/2004/09/09/diskless_server.html