Ubuntu Terminal Server

1. Ubuntu 9.04 installieren
   auf der Alternate CD ist kein Terminalserver mehr enthalten, daher normale Installation und nachträglich den Terminalserver montieren

2. http://unixlab.blogspot.com/2009/08/how-to-install-ltsp-on-ubuntu-904.html

 

Anmerkungen:

Statische IP – Adressen in /etc/network/interfaces eintragen;  dann das Netzwerk neu starten:

$ sudo /etc/init.d/networking restart

 

Mit ifconfig prüfen, ob beide Netzwerkkarten aktiv sind und eine IP-Adresse haben.

auto lo
iface lo inet loopback

# Zusatzkarte
auto eth0
iface eth0  inet static
address 192.168.0.222
netmask 255.255.255.0
gateway 192.168.0.1
dns-nameservers 192.168.0.1

# OnBoard Karte
auto eth1
iface eth1  inet static
address 192.168.1.1
netmask 255.255.255.0
gateway 192.168.0.1
dns-nameservers 192.168.0.1

 

Namensauflösung über /etc/resolv.conf

nameserver 192.168.0.1

 

Dhcp Server einrichten und neu starten

sudo /etc/init.d/dhcp3-server restart

 

/etc/ltsp/dhcpd.conf

#

# Default LTSP dhcpd.conf config file.
#

authoritative;

subnet 192.168.1.0 netmask 255.255.255.0 {
   range 192.168.1.20 192.168.1.250;
   option domain-name "example.com";
   option domain-name-servers 192.168.1.1;
   option broadcast-address 192.168.1.255;
   option routers 192.168.1.1;
   option subnet-mask 255.255.255.0;
   option root-path "/opt/ltsp/i386";
   if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {
       filename "/ltsp/i386/pxelinux.0";
   } else {
       filename "/ltsp/i386/nbi.img";
   }
}

 

Den DHCP-Server an Interface eth1 binden:

$ sudo gedit /etc/default/dhcp3-server

# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
# Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACES="eth1"

 

 

1) Install Ubuntu 9.04 desktop
You can follow the default documentation on Ubuntu site.

2) Set up a static IP on the system
You can refer to this post for setting up static IP on Jaunty.

3) Install dhcp3 server

$ sudo apt-get install dhcp3-server

You may also refer to this post for some more details on dhcp3 installation on Ubuntu 9.04.

4) Install open ssh server

$ sudo apt-get install open-sshserver

Ltsp uses ssh to tunnel X to the client machines.

5) Install ltsp

$ sudo apt-get install ltsp-server-standalone

This will download all the package needed for building LTSP.

6) Edit /etc/ltsp/dhcpd.conf to suit your IP requirement

The default dhcp3-server configuration file is in /etc/dhcp3/dhcpd.conf. However when ltsp was installed it created a new config file for dhcp3 under /etc/ltsp/dhcp3.conf. You have to edit this dhcp3.conf to suit your IP requirements.

My dhcpd.conf looks like this. You can use this as a starting point.

Code:

 # Default LTSP dhcpd.conf config file.
#
authoritative;
subnet 192.168.0.0 netmask 255.255.255.0 {
 range 192.168.0.20 192.168.0.250;
 option domain-name "example.com";
 option domain-name-servers 192.168.0.1;
 option broadcast-address 192.168.0.255;
 option routers 192.168.0.1;
#    next-server 192.168.0.1;
#    get-lease-hostnames true;
 option subnet-mask 255.255.255.0;
 option root-path "/opt/ltsp/i386";
 if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {
     filename "/ltsp/i386/pxelinux.0";
 } else {
     filename "/ltsp/i386/nbi.img";
 }
}

7) Run LTSP build client

$ sudo ltsp-build-client

This command will build the ltsp environment under /opt/ltsp and build the squashfs image for clients.

8) Enable pxe boot on a client machine and test the set-up.

Trouble shooting

1) If your client boots up and says "You are not authorised to connect to server" , run the following.
$sudo ltsp-update-sshkeys
$sudo ltsp-update-image

2) If you change the IP address of the server, run the same commands again, ie

$sudo ltsp-update-sshkeys
$sudo ltsp-update-image

Posted by Fermi Level at 9:35 PM