[K12OSN] tight vnc connection to ltsp client refused (111 error)
Trond Mæhlum
trond at maehlum.net
Sat May 20 16:55:05 UTC 2006
Eric Harrison skrev:
> Robert Arkiletian wrote:
>> On 5/19/06, Trond Mæhlum <trond at maehlum.net> wrote:
>>> Robert Arkiletian skrev:
>>>> On 5/17/06, Dan Visentin <visentind at hdsb.ca> wrote:
>>>>> Howdy Folks,
>>>>>
>>>>> I've been experimenting with Fl_TeacherTool (brilliant Rob!) but
>>> cannot
>>>>> monitor the LTSP clients. I cannot even use the vncviewer to view
>>>>> clients.
>>>>> In all cases I get a "connection refused (111)" error. I've run
>>>>> vncpasswd
>>>>> and copied files etc. as per instructions but to no avail.
>>>>>
>>>> What version of k12ltsp are you using? k12ltsp 5.0 does not work with
>>>> the monitor/control feature of fl_TT because there is no vnc X
>>>> extension module compiled in the LBE. I developed fl_TT using k12ltsp
>>>> 4.2.1EL. Although NO version of k12ltsp has the required module
>>>> compiled in the LBE, out of sheer luck the required files when copied
>>>> from the host OS seem to work in 4.2.1EL. That's why I labeled them
>>>> experimental.
>>> Robert and Dan,
>>>
>>> This also works on K12LTSP 4.4.x. It seems that it will work on all
>>> installations of LTSP4.1 that I have tried. Sadly, it does not work on
>>> LTSP4.2 for now. I am one of many (I think) that will not let go of this
>>> feature.
>>>
>>> I have tried it on the new Ubuntu and Skolelinux ltsp as well. I would
>>> suspect it to be much easier when you can chroot into the ltsp-tree and
>>> apt-get install vnc4server. Sadly I haven't been able to get it working
>>> there either. There's too many changes in ltsp, so the how-to doesn't
>>> apply to get the vncserver started at login on the terminal.
>>>
>> Hopefully Eric or Jim will provide an rpm to add the necessary
>> libraries to the LBE, if enough people request it.
>> Fl_TT is useful for more than just teachers. Perhaps Jim will decide
>> to add it to LTSP as it does provide a solution for some of the
>> desired future functionality of LTSP's roadmap. eg broadcasting,
>> shadowing, etc
>
>
> I managed to build a working binary. Still much work to do in order to
> package it up & provide patches for Jim & the LTSP crew.
>
> But for those of you who want to test it out, here is the
> quick-and-dirty instructions:
>
> =============================================================
>
> 4. Optional: Step 4 is only required to enable the experimental support
> to Monitor and Control.
>
> Edit the file /opt/ltsp/i386/etc/lts.conf
> Fine the line X4_MODULE_01=glx and change it to:
>
> X4_MODULE_01 = vnc
>
> Then edit the file /opt/ltsp/i386/etc/build_x4_cfg
> and add the following between (Secton "Screen") and
> (EndSubSection), so it looks
> like this:
>
> Section "Screen"
> Identifier "Screen0"
> Device "My Video Card"
> Monitor "My Monitor"
> DefaultDepth ${X_COLOR_DEPTH:-16}
> Subsection "Display"
> Depth ${X_COLOR_DEPTH:-16}
> Modes ${MODE[*]}
> #=========================================
> # Added to enable Monitor/Control in Fl_TeacherTool
> Option "httpdir" "/usr/share/vnc/classes"
> Option "PasswordFile" "/root/.vnc/passwd"
> Option "rfbport" "5900"
> Option "usevnc"
> #=========================================
> EndSubSection
> EndSection
>
> Now you'll have to make a password for the vnc-session. Run this
> command as root:
>
> #/usr/bin/vncpasswd
>
> Choose a password and copy the password file into the ltsp-tree
>
> #cp -R -p /root/.vnc /opt/ltsp/i386/root/
>
> Now you must copy the vnc-module into the ltsp-tree:
>
> # cd /opt/ltsp/i386/usr/X11R6/lib/modules/extensions/
> # wget ftp://k12linux.mesd.k12.or.us/pub/vnc-for-ltsp42/vnc.so
>
> Reboot the clients and the new Monitor/Control buttons in
> Fl_TeacherTool should work.
EXCELLENT! :) Can't wait to try this out on monday.
Trond
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> K12OSN mailing list
> K12OSN at redhat.com
> https://www.redhat.com/mailman/listinfo/k12osn
> For more info see <http://www.k12os.org>
More information about the K12OSN
mailing list