Installation Installation There are three phases to building

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 40 KB. § 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-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/i 386/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/i 386/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 e. Xecution Environment] – Etherboot

Booting technologies § PXE [Pre-boot e. Xecution 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/