Transcript Installation Installation  There are three phases to building an LTSP server: – Installing the LTSP utilities – Installing the LTSP client packages – Configuring.

Installation
Installation
 There are three phases to building an LTSP
server:
– Installing the LTSP utilities
– Installing the LTSP client packages
– Configuring the services needed by LTSP
Installing the LTSP utilities
 Includes utilities for installing and managing the
LTSP client packages, and for configuring the
services on the LTSP server.
 The last version is LTSP 4-2.
 Availability in several formats
– tgz, rpm, dev
 About 40KB.
 You can download the rpm version from
– http://ltsp.mirrors.tds.net/pub/ltsp/utils/ltsp-utils-0.250.noarch.rpm
 Other formats can be found in:
– http://www.ltsp.org/download/
 Install the package:
– rpm -ivh ltsp-utils-0.25-0.noarch.rpm
Installing the LTSP client
packages
 Run the “ltspadmin” command in a shell.
 You will see the administration window.
 Choose "Install/Update" option to install the
packages.
Installing the LTSP client
packages (2)
The LTSP Installer configuration window will
appear.
Installing the LTSP client
packages (3)
 The options that you have are:
– Select the source of the packages.
 If your computer is connected to Internet type
http://ltsp.mirrors.tds.net/pub/ltsp/ltsp-4.2/
 Else you have to download the files and save them in a file. For the LTSP
4-1 version and below you can download the ISO file and burn it into a
CD (http://sourceforge.net/project/showfiles.php?group_id=17723). After
you have to specify your source, for example file:///media/cdrecorder if is
a CD.
– Directory of the client tree.
 Accept the default value
– Http proxy URL.
 If your connections go through one, specify the URL. Otherwise
accept the default options
– FTP proxy.
 The same than before.
Installing the LTSP client
packages (4)
 Press “a” to select all components and “q” to
install them.
Configuring the services needed
by LTSP
 LTSP relys on 4 services:
– DHCP [Dynamic Host Configuration Protocol]: used to
lease IPs to clients.
– TFTP [Trivial Transfer File Protocol]: to transfer files to
clients, like the client software.
– NFS [Network File System]: used to mount remote
directories.
– XDMCP [X Display Manager Controller Protocol]: used to
implement graphical login displays.
Configuring the services needed
by LTSP (2)
 Type “ltspcfg”.
 That are the options you have to configure:
Configuring the services needed
by LTSP (3)
 Runlevel
– Select runlevel 5 to indicate that your system is in
graphical mode in a network.
 Interface selection
– Select the current NIC
 DHCP
– It will create a default dhcpd.conf file and run the service.
 TFTP
– Enable the service
 Portmapper
– Used by RPC services, such as NFS
Configuring the services needed
by LTSP (4)
 NFS
– It will create the default configuration file and start the
service.
 XDMCP
– Allow graphical logins in the client. Enable it.
 Create /etc/hosts entries
– Some services like NFS need to be able to map the IP of
a workstation to a host name. Create the entries.
 Create /etc/host.allow entries
– This file provides security. Create it.
 Create the /etc/exports file
– This file is used by NFS to determine which directories
are allowed to be mounted by remote machines. Create
it.
Configuring the services needed
by LTSP (5)
 Create the lts.conf file
– The configuration of each workstation is in this file.
 Type “ltspcfg” and “s” to check the configuration.
Workstation specific configuration
 For your specific network there are 3 files you
need to edit.
– /etc/dhcpd.conf
 For the DHCP service.
– /etc/hosts
 For the name/IP address mapping.
– /opt/ltsp/i386/etc/lts.conf
 Specific configuration of the workstation.
 The explanation of how to edit
/etc/dhcpd.conf and /etc/hosts goes beyond
Workstation specific configuration
(2)
 The file /opt/ltsp/i386/etc/lts.conf includes a default
configuration for the clients.
[Default]
SERVER
= 192.168.0.254
XSERVER
= auto
X_MOUSE_PROTOCOL = "PS/2"
X_MOUSE_DEVICE = "/dev/psaux"
X_MOUSE_RESOLUTION = 400
X_MOUSE_BUTTONS = 3
USE_XFS
=N
LOCAL_APPS
=N
RUNLEVEL
=5
Workstation specific configuration
(3)
 Use the default values but “SERVER”,
specify your server IP address.
Booting workstations
 Set up the workstations to boot up.
– Hard disk
– CD
– Floppy disk
– Network Interface Card
 Technologies
– PXE [Pre-boot eXecution Environment]
– Etherboot
Booting technologies
 PXE [Pre-boot eXecution Environment]
– Allows you to boot a computer without hard
disk or floppy disk or CD.
– It boots from network.
 You need a NIC.
– It is a feature available in most NICs.
– You have to enable PXE in the BIOS setup
– This is the process:
 Send DHCP requests.
 Get IP.
 Get the boot file.
Booting technologies (2)
 Etherboot
– A boot image is required for starting the boot
process.
– You create a boot image in a CD or floppy disk.
 Set up the BIOS to boot from CD/floppy disk.
 http://www.Rom-O-Matic.net/
– You also can create the boot image in the NIC
 The boot program is written in an EPROM memory.
 The EPROM is inserted in a socket in the NIC.
 Set up the BIOS to boot from a LAN.
 http://www.Rom-O-Matic.net/