Setting up an LTSP server for diskless clients

mass change LTSP boot server in macadm DB

ssh root@admin.phys.ethz.ch
mysql macadm
update macaddrs set dhcpgroup=7 where dhcpgroup=8;     move all to plimpy
update macaddrs set dhcpgroup=8 where dhcpgroup=7;     move all to plompy

debugging the lts.conf

On the LTSP client run getltscfg -a to syntax check the lts.conf.

improving login time

rename /opt/ltsp/i386/usr/share/ldm/rc.d/X01-localapps to x01-localapps as we don't need it and it saves about 1-4 minutes login time

New install on 11.04 LTS on plompy

To create a basic load balancing, there is this documentation http://ubuntuforums.org/showthread.php?t=935416

Regular 11.04 workstation installation. Install ltsp-server, ldm-server and ltspfs. On the DHCP server:

# -----------------------
# LTSP Server plompy
# -----------------------
group {
  next-server 192.33.99.213;
  filename "/ltsp/i386/pxelinux.0";
  include "/etc/dhcp3/clients-diskless-test";
}

. On the Terminal Server build the chroot by issuing ltsp-build-client –arch=i386 and add

/opt/ltsp/i386  @many(ro,no_root_squash,async)
/var/lib/tftpboot/ltsp/i386     @bootservers(ro,async,crossmnt,no_subtree_check)
/boot   @bootservers(ro,async,crossmnt,no_subtree_check)

to /etc/exports and run invoke-rc.d nfs-kernel-server reload.

We also need a tftp server: aptitude install tftpd-hpa.

In /pub/debian-local/configs/lucid/plompy create an lts.conf containing

[Default]
        LOCALDEV = True
        SOUND = True
        LDM_DIRECTX = True
        X_COLOR_DEPTH = 24
        SCREEN_07 = ldm

#kiosk terminals
[kiosk]
        LDM_AUTOLOGIN = true
        LDM_USERNAME = kiosk
        LDM_PASSWORD = dsjfgasdjf

#Windows Terminal Server client
[wts_en]
        SCREEN_08 = rdesktop
        RDP_SERVER = winlogin.phys.ethz.ch
        RDP_OPTIONS     = "-a 32 -x l -z -P -r sound:local -k en-us -r disk:stick=/var/run/drives"
[wts_de]
        SCREEN_08 = rdesktop
        RDP_SERVER = winlogin.phys.ethz.ch
        RDP_OPTIONS     = "-a 32 -x l -z -P -r sound:local -k de-ch -r disk:stick=/var/run/drives"

and dphys-config.list.host with

lts.conf:/opt/ltsp/i386/etc/
mathematica-fonts-Type1.tar.gz:/opt/ltsp/i386/usr/share/fonts/X11/Type1/:tar xzf {}
ldm-theme-dphys.tar.gz:/opt/ltsp/i386/usr/share/ldm/themes/:tar xzf {}
logo.png:/opt/ltsp/i386/usr/share/ldm/themes/DPHYS/:

For the kiosk user, add

kiosk:x:128:65534::/var/kiosk:/bin/bash

to /etc/passwd,

kiosk:$1$zOxMMoWN$tM/M5Da2i6GwpWM3Wtja7/:14734::::::

to /etc/shadow and copy kiosk's /var/kiosk/.

Now run dphys-config and create the NBD boot image: ltsp-update-image -a i386 (remember to run this command every time you've changed something in the chroot).

Update: X crashes on Alix clients. Fixed by new driver from https://launchpad.net/~q-funk/+archive/ppa

Old install on etch/lenny

Fix 'not authorized' problem after plimpy reboot

After rebooting plimpy, the ssh keys get regenerated which results in a 'this workstation is not authorized' error message on the thin clients and their inability to log into plimpy. To correct this, open /opt/ltsp/i386/etc/ssh/ssh_known_hosts, duplicate the two lines starting with 'plimpy' and modify the copied lines to read 'plimpy.ethz.ch'. After a reboot, the thin clients can log in again.

LTSP server root fs

enable alioth LTSP backports:

wget http://pkg-ltsp.alioth.debian.org/debian/pkg-ltsp-keyring
apt-key add pkg-ltsp-keyring

add

deb http://pkg-ltsp.alioth.debian.org/debian etch-ltsp-backports main

to /etc/apt/sources.list (using dphys-config)

aptitude install ltsp-server ltspfs

#make sure it's from alioth! (lenny works fine without alioth)

ltsp-build-client --arch i386 --dist lenny --mirror http://debian.ethz.ch/debian/ --apt-keys /etc/apt/trusted.gpg  --extra-mirror "http://pkg-ltsp.alioth.debian.org/debian etch-ltsp-backports main"

/etc/exports:

/opt/ltsp/i386       (ro,no_root_squash,async)
/var/lib/tftpboot/ltsp/i386     @bootservers(ro,async,crossmnt,no_subtree_check)

/etc/inetd.conf:

tftp           dgram   udp     wait    root  /usr/sbin/in.tftpd /usr/sbin/in.tftpd -s /var/lib/tftpboot

sound support:

aptitude install libasound2-plugins

/etc/asound.conf:

pcm.!default {
        type pulse
}

ctl.!default {
        type pulse
}

configure client sound output to alsa.

DHCP config (/etc/dhcp3/dhcpd.conf):

group {
        next-server "LTSP-SERVER-IP";
        filename "/ltsp/i386/pxelinux.0";
        include "/etc/dhcp3/clients-diskless-test";
}

PXE config (/var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default):

DEFAULT vmlinuz ro initrd=initrd.img root=/dev/nfs ip=dhcp nfsroot=LTSP-SERVER-IP:/opt/ltsp/i386/ vga=794 boot=nfs

for local USB devices and VirtualBox: /etc/rc.local (overwritten by dphys-config???)

chmod 666 /dev/vboxdrv
chmod 666 /dev/fuse

client file system: (chroot /opt/ltsp/i386/)

passwd root

copy amd xorg driver to ./usr/lib/xorg/modules/drivers/amd_drv.so

to enable big brother monitoring: /etc/default/ltsp-client-setup: copy_dirs=”/etc/bigbrother/ /var/lib/bigbrother/bb19c/ /etc/X11/ /root/ /var/yp/”

rm /etc/hostname
touch /etc/hostname
aptitude install lsof less openssh-server

/etc/lts.conf:

#true for all
[Default]
        LOCALDEV = True
        SOUND = True
        LDM_DIRECTX = False #as long as the X auth issue has not been solved
        X_COLOR_DEPTH = 16
        X_MODE_0 = 1280x1024

#hardware dependent stuff
[Alix]
        XSERVER = amd

#monitor specific stuff
[1600]
        X_MODE_0 = 1600x1200

[1280]
        X_MODE_0 = 1280x1024

[1024]
        X_MODE_0 = 1024x768

#kiosk terminals
[kiosk]
        LDM_AUTOLOGIN = true
        LDM_USERNAME = kiosk
        LDM_PASSWORD = dsjfasdjf




#actual hosts

[00:0d:b9:0c:ef:c0]
#HPK F ? Ralph Eichler
        LIKE = Alix
        LIKE = 1280
        HOST_NAME = malta

changes to /usr/share/ltsp/configure-x.sh to enable mathematica fonts and screen rotation:

handle_mathematica_fonts(){
    perl -pi -e 's#dirs\/TrueType"#dirs/TrueType"\n FontPath        "/usr/share/fonts/mathematica/Type1"\nFontPath        "/usr/share/fonts/mathematica/BDF"#' $INPUT_FILE
}

handle_rotate(){
    if [ -n "$X_ROTATE_SCREEN" ];then
            perl -pi -e 's#BoardName#Option         "Rotate" "left"\nBoardName#' $INPUT_FILE
    fi
}

handle_dpms(){
    perl -pi -e 's#Section "Monitor"#Section "Monitor"\n\tOption         "DPMS"#' $INPUT_FILE
    perl -pi -e 's#Section "Screen"#Section "Screen"\n\tOption         "DPMS" "true"#' $INPUT_FILE
}

and

handle_mathematica_fonts || true
handle_rotate || true
handle_dpms || true

adds mathematica font paths and allows us to define X_ROTATE_SCREEN = True to use portrait screens

for rdesktop (Windows terminal server) screens on :8 we need to fix the login windows reset problem in Windows Server 2008. Our workaround: extra wrapper script to start rdesktop. In /usr/share/ltsp/screen.d/, create rdw containing

#!/bin/sh
# 
# remote desktop wrapper script
# written to supersede the original LTSP rdesktop script in order to solve the Windows 2008 Server logon screen timeout issue
# (c) 2008 daduke <daduke@daduke.org> 
# 
# This software is licensed under the Gnu General Public License.
# The full text of which can be found at http://www.LTSP.org/license.txt
#
# 
#
# /opt/ltsp/i386/etc/screen.d/rdesktop
#           
# Call this through /opt/ltsp/i386/etc/lts.conf like this:
#           RDP_OPTIONS  = "-a 16"
#           RDP_SERVER   = w2k3.terminal.server.ip
#           SCREEN_02    = rdesktop
#

PATH=/bin:$PATH; export PATH
. /usr/share/ltsp/screen-x-common

RDP_OPTIONS=${RDP_OPTIONS:-"-f"} 

RDESKTOP_OPTIONS="${RDP_OPTIONS} -f $* ${RDP_SERVER}"
        
while :; do       
        /usr/bin/rdesktop           \       
                  -u "" \
                ${RDESKTOP_OPTIONS}         
done

and chmod a+x it. Modify /usr/share/ltsp/screen.d/rdesktop to read

#!/bin/sh
#
# The following script works for LTSP5 and was tested in Debian etch.
# Modified 2008 by daduke <daduke@daduke.org>
# Original rdesktop script by James A. McQuillan,
# modified for LTSP5 by Colin Osterhout of SERRC (www.serrc.org).
#
# This software is licensed under the Gnu General Public License.
# The full text of which can be found at http://www.LTSP.org/license.txt
#
#
#
# /opt/ltsp/i386/etc/screen.d/rdesktop
#
# Call this through /opt/ltsp/i386/etc/lts.conf like this:
#           RDP_OPTIONS  = "-a 16"
#           RDP_SERVER   = w2k3.terminal.server.ip
#           SCREEN_02    = rdesktop
#

PATH=/bin:$PATH; export PATH
. /usr/share/ltsp/screen-x-common

/usr/bin/xinit      /usr/share/ltsp/screen.d/rdw \
        -- \
        ${DISP}                     \
        vt${TTY}

and add

        SCREEN_08 = rdesktop
        RDP_SERVER = winlogin.phys.ethz.ch
        RDP_OPTIONS     = "-x l -r sound:local -r disk:usbstick=/var/run/drives"

to lts.conf.

##########################
lts.conf options:
                    *****Switch on/off features (and dependant optional options)*****


|   Variable    |   Possible Values     |   Default value  |       Comment
---------------------------------------------------------------------------------------------
SOUND               Y,y,True,true            unset
 (SOUND_DAEMON)     esd , nasd               esd
---------------------------------------------------------------------------------------------
LOCALDEV            Y,y,True,true            unset
---------------------------------------------------------------------------------------------
DNS_SERVER          A valid IP               unset
 (SEARCH_DOMAIN)    Domainname               unset           required if DNS_SERVER is set
---------------------------------------------------------------------------------------------
CONSOLE_KEYMAP      A valid console keymap   en
---------------------------------------------------------------------------------------------
NBD_SWAP            Y,y,True,true            unset
 (SWAP_SERVER)      nbd server IP            ltsp server
 (NBD_PORT)         A valid nbd portnumber   9572
---------------------------------------------------------------------------------------------
USE_LOCAL_SWAP      Y,y,True,true            unset
---------------------------------------------------------------------------------------------
PRINTER_0_DEVICE    dev (i.e. /dev/usblp0)   unset
 (PRINTER_0_TYPE)   P(parallel), S(serial)   unset           only required for serial,
                    U(USB)                                   others are autodetected
 (PRINTER_0_PORT)   A valid portnumber       9100
 (PRINTER_0_WRITE_ONLY)     Y,N              N               
 (PRINTER_0_SPEED)  A baud rate              9600            serial only
 (PRINTER_0_FLOWCTRL) flow control param     S               serial only
 (PRINTER_0_PARITY) Parity setting           N               serial only
 (PRINTER_0_DATABITS) Bitnumber              8               serial only
 (PRINTER_0_OPTIONS) additional options      unset
                     the printer understands
---------------------------------------------------------------------------------------------
USE_XFS             Y,y,True,true            unset
 (XFS_SERVER)       Font server IP           unset
---------------------------------------------------------------------------------------------
XKBLAYOUT           A valid xorg Layout      unset           see xorg documentation for value
---------------------------------------------------------------------------------------------
XKBMODEL            A valid xkb model        unset           see xorg documentation for value
---------------------------------------------------------------------------------------------
XKBRULES            A set of xkb rules       unset           see xorg documentation for value
---------------------------------------------------------------------------------------------
XKBOPTIONS          A set of xkb options     unset           see xorg documentation for value
---------------------------------------------------------------------------------------------
XKBVARIANT          A valid xkb variant      unset           see xorg documentation for value
---------------------------------------------------------------------------------------------
NETWORK_COMPRESSION Y,y,True,true            unset           compress ssh traffic
---------------------------------------------------------------------------------------------
LDM_REMOTECMD       A custom command (path   Xsession        use to override default session
                    on the server)
---------------------------------------------------------------------------------------------
RCFILE_nn           A custom rc file         unset
---------------------------------------------------------------------------------------------


                               *****Overrides for autodetected values*****


|   Variable    |   Possible Values     |   Default value  |       Comment
---------------------------------------------------------------------------------------------
SCREEN_nn           ldm, sdm, shell,        ldm
                    startx, telnet
---------------------------------------------------------------------------------------------
SERVER              Server IP               ltsp server
---------------------------------------------------------------------------------------------
SYSLOG_HOST         Server IP               ltsp server      add SYSLOGD="-r" to the servers 
                                                             /etc/ltsp/syslogd file first
---------------------------------------------------------------------------------------------
MODULE_nn           Kernel module name      autodetected     use to force loading of specific 
                                                             module
---------------------------------------------------------------------------------------------
XF86CONFIG_FILE     path to a file          autodetected     relative to /opt/ltsp/$ARCH
---------------------------------------------------------------------------------------------
XSERVER             ark                     autodetected
                    ati
                    atimisc
                    chips
                    cirrus_alpine
                    cirrus
                    cirrus_laguna
                    cyrix
                    dummy
                    fbdev
                    fglrx
                    glint
                    i128
                    i740
                    i810
                    imstt
                    mga
                    neomagic
                    newport
                    nsc
                    nv
                    r128
                    radeon
                    rendition
                    riva128
                    s3
                    s3virge
                    savage
                    siliconmotion
                    sis
                    sisusb
                    tdfx
                    tga
                    trident
                    tseng
                    v4l
                    vesa
                    vga
                    via
                    vmware
                    voodoo
---------------------------------------------------------------------------------------------
X_HORZSYNC          min-max MHz             autdetected      use for forcing X_MODE
---------------------------------------------------------------------------------------------
X_VERTREFRESH       min-max Hz              autdetected      use for forcing X_MODE
---------------------------------------------------------------------------------------------
X_COLOR_DEPTH       2, 4, 8, 16, 24, 32     32               set to 16bit to save client mem
---------------------------------------------------------------------------------------------
X_MOUSE_DEVICE      /dev/ttySn              autodetected     serial mice only, 
                                                             all others are autodetected
 (X_MOUSE_PROTOCOL) sunkbd                  unset            serial only (see above)
                    lkkbd
                    vsxxxaa
                    spaceorb
                    spaceball
                    magellan
                    warrior
                    stinger
                    mousesystems
                    sunmouse
                    microsoft
                    mshack
                    mouseman
                    intellimouse
                    mmwheel
                    iforce
                    h3600ts
                    stowawaykbd
                    ps2serkbd
                    twiddler
                    twiddlerjoy
---------------------------------------------------------------------------------------------
X_MOUSE_EMULATE3BTN Y,y,True,true           unset
---------------------------------------------------------------------------------------------
TELNET_HOST         Telnet server IP        ltsp server      for use with SCREEN_nn=telnet
---------------------------------------------------------------------------------------------
XDM_SERVER          XDMCP server IP         ltsp server      for use with SCREEN_nn=startx
---------------------------------------------------------------------------------------------
SSH_OVERRIDE_PORT   Portnumber              unset            for use wiht a dedicated ssh port
---------------------------------------------------------------------------------------------
 
setting_up_an_ltsp_server_for_diskless_clients.txt · Last modified: 2014/08/31 17:41 by beckercl
 
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