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LTSP5 - iTalc
iTalc-ohjelmistolla voidaan opettajan koneelta hallita ATK-luokan kaikkia muita tietokoneita (Windows tai Linux-tietokoneita). Lue tarkemmin iTalc ohjelmistosta:
http://www.arkki.info/howto/iTalc/01.png
iTalc - Asennus
iTalc kannattaa asentaa ppa-lähteestä:
https://launchpad.net/~edubuntu-italc-devel/+archive
Poista ennen asennusta Vinagre-ohjelma, Vinagre käyttää myös VNC-ohjelmaa.
Asennus tehdään sekä päätteiden chroot-ympäristöön että palvelimelle.
iTalc - Asennus chroot-ympäristöön
Kopioi /etc/apt/sources.list-tiedosto palveliemlta päätteiden chroot-ympäristöön ja päivitä tiedot. Katso tästä tarkemmin toisesta ohjeesta: http://wiki.ubuntu-fi.org/LTSP5_Chroot .
Älä käytä alla olevaa asennusta lähdekoodista; se on vanhentunut!
iTalc -asennus
http://italc.sourceforge.net/wiki/index.php?title=ITALC_in_a_ThinClient_environment
LTSP-tuki ei ole yhtä kattava kuin tavanomaisten PC-tietokoneiden kohdalla, mutta silti riittävä monitorointiin ja esimerkiksi viestien lähettämiseen.
Tässä ohjeessa iTalc-ohjelmisto on asennettu lähdekoodista. Ohjelmisto on saatavilla myös deb-paketteina, sitä ei ole testattu tämän asennuksen rinnalla.
https://launchpad.net/~edubuntu-italc-devel/+archive
Deb-paketit on kokeiltu seuraavan Ubuntun (8.10) kehitysversiossa. Lue lisää foorumiviestistä:
http://forum.ubuntu-fi.org/index.php?topic=21416.msg160021#msg160021
Kun lähdekoodipaketti on haettu, purettu sopivaan hakemistoon ja haettu kaikki muut tarvittavat ohjelmistot ja kirjastot, ohjelma rakennetaan lähdekoodista ja asennetaan /usr/local-hakemistoon.
asmok@ubuntu:~/Bin/italc-1.0.9$ ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... gawk checking whether make sets $(MAKE)... yes checking for gcc... gcc checking for C compiler default output file name... a.out [--] configure: creating ./config.status config.status: creating Makefile config.status: creating italc.spec config.status: creating lib/Makefile config.status: creating ica/Makefile config.status: creating ima/Makefile config.status: creating ima/data/italc config.status: creating ima/data/italc.desktop config.status: creating setup/Makefile config.status: creating ica/ica.rc config.status: creating ima/italc.rc config.status: creating setup/setup.rc config.status: creating config.h config.status: config.h is unchanged config.status: executing lib/include/rfb/rfbconfig.h commands config.status: creating lib/include/rfb/rfbconfig.h - prefix LIBVNCSERVER for config.h defines config.status: lib/include/rfb/rfbconfig.h is unchanged config.status: executing depfiles commands config.status: executing libtool commands ============================= === iTALC - INFORMATION =================================================== ============================= = = iTALC was configured successfully! Now try to build it by typing = 'make' and wait until it is finished. = Then either install iTALC by typing 'make install' or copy the binaries by = hand as described in INSTALL. = = If there're any problems, please contact an iTALC-developer (see AUTHORS) = asmok@ubuntu:~/Bin/italc-1.0.9$
asmok@ubuntu:~/Bin/italc-1.0.9$ make make all-recursive make[1]: Siirrytään hakemistoon "/home/asmok/Bin/italc-1.0.9" Making all in lib make[2]: Siirrytään hakemistoon "/home/asmok/Bin/italc-1.0.9/lib" [--] make[3]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9/setup" make[2]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9/setup" make[2]: Siirrytään hakemistoon "/home/asmok/Bin/italc-1.0.9" make[2]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9" make[1]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9" asmok@ubuntu:~/Bin/italc-1.0.9$
asmok@ubuntu:~/Bin/italc-1.0.9$ sudo make install Making install in lib make[1]: Siirrytään hakemistoon "/home/asmok/Bin/italc-1.0.9/lib" [--] make[2]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9" make[1]: Poistutaan hakemistosta "/home/asmok/Bin/italc-1.0.9" asmok@ubuntu:~/Bin/italc-1.0.9$
iTalc - avainparien luominen
iTalc käyttää avainpareja yhteyksien luomisessa, avainparit pitää ensin luoda.
asmok@ubuntu:~$ sudo ica -role teacher -createkeypair creating new key-pair ... ...done, saved key-pair in /etc/italc/keys/private/teacher/key and /etc/italc/keys/public/teacher/key For now the file is only readable by root and members of group root (if you didn't ran this command as non-root). I suggest changing the ownership of the private key so that the file is readable by all members of a special group to which all users belong who are allowed to use iTALC. asmok@ubuntu:~$
Tämän jälkeen luodaan ryhmä "italc" ja lisätään ryhmään opettajat - tässä asennuksessa tunnukset asmok ja ltsp.
asmok@ubuntu:~$ sudo addgroup italc
asmok@ubuntu:~$ cat /etc/group | grep italc italc:x:1006:asmok,ltsp asmok@ubuntu:~$
Annetaan avainpareista hakemisto "private" "italc"-ryhmään käyttöön ja muutetaan sen oikeuksia.
asmok@ubuntu:~$ sudo chgrp -R italc /etc/italc/keys/private asmok@ubuntu:~$ sudo chmod -R o-rwx /etc/italc/keys/private
Hakemistolle "public" annetaan riittävät lukuoikeudet kaikille käyttäjille.
asmok@ubuntu:~$ sudo chmod -R 755 /etc/italc/keys/public
"Public" hakemisto kopioidaan kaikkien päätteiden käyttöön /opt/ltsp/-hakemistoon.
asmok@ubuntu:~$ ls -al /opt/ltsp/i386/etc/italc/keys/public/teacher/key -r--r--r-- 1 root root 590 2008-09-11 20:55 /opt/ltsp/i386/etc/italc/keys/public/teacher/key asmok@ubuntu:~$
iTalc-ohjelmiston käynnistäminen palvelimella ja päätteellä
Palvelimella iTalc-ohjelmisto käynnistetään sellaisella tunnuksella, joka on ryhmässä iTalc. Tässä asennuksessa tunnus on "asmok".
asmok@ubuntu:~$ ica
asmok@ubuntu:~$ 12/09/2008 12:39:16 passing arg to libvncserver: -rfbport
12/09/2008 12:39:16 passing arg to libvncserver: 5900
12/09/2008 12:39:16 x11vnc version: 0.9.4 lastmod: 2008-06-24
12/09/2008 12:39:16 Using X display :0.0
12/09/2008 12:39:16
12/09/2008 12:39:16 ------------------ USEFUL INFORMATION ------------------
12/09/2008 12:39:16 X DAMAGE available on display, using it for polling hints.
12/09/2008 12:39:16 To disable this behavior use: '-noxdamage'
12/09/2008 12:39:16
12/09/2008 12:39:16 Wireframing: -wireframe mode is in effect for window moves.
12/09/2008 12:39:16 If this yields undesired behavior (poor response, painting
12/09/2008 12:39:16 errors, etc) it may be disabled:
12/09/2008 12:39:16 - use '-nowf' to disable wireframing completely.
12/09/2008 12:39:16 - use '-nowcr' to disable the Copy Rectangle after the
12/09/2008 12:39:16 moved window is released in the new position.
12/09/2008 12:39:16 Also see the -help entry for tuning parameters.
12/09/2008 12:39:16 You can press 3 Alt_L's (Left "Alt" key) in a row to
12/09/2008 12:39:16 repaint the screen, also see the -fixscreen option for
12/09/2008 12:39:16 periodic repaints.
12/09/2008 12:39:16
12/09/2008 12:39:16 XFIXES available on display, resetting cursor mode
12/09/2008 12:39:16 to: '-cursor most'.
12/09/2008 12:39:16 to disable this behavior use: '-cursor arrow'
12/09/2008 12:39:16 or '-noxfixes'.
12/09/2008 12:39:16 using XFIXES for cursor drawing.
12/09/2008 12:39:16 GrabServer control via XTEST.
12/09/2008 12:39:16
12/09/2008 12:39:16 Scroll Detection: -scrollcopyrect mode is in effect to
12/09/2008 12:39:16 use RECORD extension to try to detect scrolling windows
12/09/2008 12:39:16 (induced by either user keystroke or mouse input).
12/09/2008 12:39:16 If this yields undesired behavior (poor response, painting
12/09/2008 12:39:16 errors, etc) it may be disabled via: '-noscr'
12/09/2008 12:39:16 Also see the -help entry for tuning parameters.
12/09/2008 12:39:16 You can press 3 Alt_L's (Left "Alt" key) in a row to
12/09/2008 12:39:16 repaint the screen, also see the -fixscreen option for
12/09/2008 12:39:16 periodic repaints.
12/09/2008 12:39:16
12/09/2008 12:39:16 XKEYBOARD: number of keysyms per keycode 6 is greater
12/09/2008 12:39:16 than 4 and 88 keysyms are mapped above 4.
12/09/2008 12:39:16 Automatically switching to -xkb mode.
12/09/2008 12:39:16 If this makes the key mapping worse you can
12/09/2008 12:39:16 disable it with the "-noxkb" option.
12/09/2008 12:39:16 Also, remember "-remap DEAD" for accenting characters.
12/09/2008 12:39:16 X FBPM extension not supported.
12/09/2008 12:39:16 X display is capable of DPMS.
12/09/2008 12:39:16 --------------------------------------------------------
12/09/2008 12:39:16
12/09/2008 12:39:16 Default visual ID: 0x23
12/09/2008 12:39:16 Read initial data from X display into framebuffer.
12/09/2008 12:39:16 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/6720
12/09/2008 12:39:16
12/09/2008 12:39:16 X display :0.0 is 32bpp depth=24 true color
12/09/2008 12:39:16
12/09/2008 12:39:16 Listening for VNC connections on TCP port 5900
12/09/2008 12:39:16
12/09/2008 12:39:16 Xinerama is present and active (e.g. multi-head).
12/09/2008 12:39:16 fb read rate: 148 MB/sec
12/09/2008 12:39:16 fast read: reset wait ms to: 10
12/09/2008 12:39:16 fast read: reset defer ms to: 15
12/09/2008 12:39:16 screen setup finished.
12/09/2008 12:39:16
The VNC desktop is: ubuntu:0
PORT=5900
******************************************************************************
Have you tried the x11vnc '-ncache' VNC client-side pixel caching feature yet?
The scheme stores pixel data offscreen on the VNC viewer side for faster
retrieval. It should work with any VNC viewer. Try it by running:
x11vnc -ncache 10 ...
more info: http://www.karlrunge.com/x11vnc/#faq-client-caching
asmok@ubuntu:~$ ps ax | grep ica
11847 pts/2 Sl 0:00 ica
11850 pts/2 S 0:00 /usr/local/bin/ica -rx11vs -nosel -nosetclipboard -rfbport 5900 -rx11vs -isdport 5800 -role other
11939 pts/2 S+ 0:00 grep ica
asmok@ubuntu:~$Päätteitä varten kopioidaan palvelimelle ajettava skripti, jonka nimi on "start_ica". Se käynnistetään päätteen tunnuksella. Ajettava skripti sijoitetaan palvelimella /usr/local/bin-hakemistoon.
Tästä ohjeesta puuttuu vielä, miten tämä skripti käynnistyy automaattisesti, kun päätekin käynnistyy tai tunnuksella kirjaudutaan sisään.
Ajettava skripti - start_ica: http://www.arkki.info/howto/iTalc/start_ica
ltsp001@ubuntu:~$ start_ica
ltsp001@ubuntu:~$ 12/09/2008 12:45:32 passing arg to libvncserver: -rfbport
12/09/2008 12:45:32 passing arg to libvncserver: 11244
12/09/2008 12:45:32 x11vnc version: 0.9.4 lastmod: 2008-06-24
12/09/2008 12:45:32 Using X display 192.168.1.244:6.0
12/09/2008 12:45:32
12/09/2008 12:45:32 ------------------ USEFUL INFORMATION ------------------
12/09/2008 12:45:32 X DAMAGE available on display, using it for polling hints.
12/09/2008 12:45:32 To disable this behavior use: '-noxdamage'
12/09/2008 12:45:32
12/09/2008 12:45:32 Wireframing: -wireframe mode is in effect for window moves.
12/09/2008 12:45:32 If this yields undesired behavior (poor response, painting
12/09/2008 12:45:32 errors, etc) it may be disabled:
12/09/2008 12:45:32 - use '-nowf' to disable wireframing completely.
12/09/2008 12:45:32 - use '-nowcr' to disable the Copy Rectangle after the
12/09/2008 12:45:32 moved window is released in the new position.
12/09/2008 12:45:32 Also see the -help entry for tuning parameters.
12/09/2008 12:45:32 You can press 3 Alt_L's (Left "Alt" key) in a row to
12/09/2008 12:45:32 repaint the screen, also see the -fixscreen option for
12/09/2008 12:45:32 periodic repaints.
12/09/2008 12:45:32
12/09/2008 12:45:32 XFIXES available on display, resetting cursor mode
12/09/2008 12:45:32 to: '-cursor most'.
12/09/2008 12:45:32 to disable this behavior use: '-cursor arrow'
12/09/2008 12:45:32 or '-noxfixes'.
12/09/2008 12:45:32 using XFIXES for cursor drawing.
12/09/2008 12:45:32 GrabServer control via XTEST.
12/09/2008 12:45:32
12/09/2008 12:45:32 Scroll Detection: -scrollcopyrect mode is in effect to
12/09/2008 12:45:32 use RECORD extension to try to detect scrolling windows
12/09/2008 12:45:32 (induced by either user keystroke or mouse input).
12/09/2008 12:45:32 If this yields undesired behavior (poor response, painting
12/09/2008 12:45:32 errors, etc) it may be disabled via: '-noscr'
12/09/2008 12:45:32 Also see the -help entry for tuning parameters.
12/09/2008 12:45:32 You can press 3 Alt_L's (Left "Alt" key) in a row to
12/09/2008 12:45:32 repaint the screen, also see the -fixscreen option for
12/09/2008 12:45:32 periodic repaints.
12/09/2008 12:45:32
12/09/2008 12:45:32 XKEYBOARD: all 28 "must have" keysyms accounted for.
12/09/2008 12:45:32 Not automatically switching to -xkb mode.
12/09/2008 12:45:32 If some keys still cannot be typed, try using -xkb.
12/09/2008 12:45:32 Also, remember "-remap DEAD" for accenting characters.
12/09/2008 12:45:32 X FBPM extension not supported.
12/09/2008 12:45:32 X display is capable of DPMS.
12/09/2008 12:45:32 --------------------------------------------------------
12/09/2008 12:45:32
12/09/2008 12:45:32 Default visual ID: 0x23
12/09/2008 12:45:32 Read initial data from X display into framebuffer.
12/09/2008 12:45:32 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/4096
12/09/2008 12:45:32
12/09/2008 12:45:32 X display 192.168.1.244:6.0 is 32bpp depth=24 true color
12/09/2008 12:45:32
12/09/2008 12:45:32 Listening for VNC connections on TCP port 11244
12/09/2008 12:45:32
12/09/2008 12:45:32 Xinerama is present and active (e.g. multi-head).
12/09/2008 12:45:32 fb read rate: 10 MB/sec
12/09/2008 12:45:32 screen setup finished.
12/09/2008 12:45:32
The VNC desktop is: ubuntu:5344
12/09/2008 12:45:32 possible aliases: ubuntu:11244, ubuntu::11244
PORT=11244
******************************************************************************
Have you tried the x11vnc '-ncache' VNC client-side pixel caching feature yet?
The scheme stores pixel data offscreen on the VNC viewer side for faster
retrieval. It should work with any VNC viewer. Try it by running:
x11vnc -ncache 10 ...
more info: http://www.karlrunge.com/x11vnc/#faq-client-cachingiTalc-ohjelmiston käyttö
Valikosta avataan iTalc-ohjelmiston hallinta- ja monitorointityökalu. Tässä asennuksessa on ensin lisätty palvelinkone (192.168.1.101).
[http://www.arkki.info/howto/iTalc/iTalc_01.png iTalc_01.png]
Tämän jälkeen on lisätty pääte (192.168.1.244 = localhost:11244).
[http://www.arkki.info/howto/iTalc/iTalc_02.png iTalc_02.png]
[http://www.arkki.info/howto/iTalc/iTalc_03.png iTalc_03.png]
Päätteelle on lähetetty viesti.
[http://www.arkki.info/howto/iTalc/iTalc_04.png iTalc_04.png]
[http://www.arkki.info/howto/iTalc/iTalc_05.png iTalc_05.png]
