IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 8 October 2009   (all times are UTC)

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04:33
<asmok>
hello, can't access to web admin
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04:33
<asmok>
when using ltsp-cluster in 64 server
04:33
<elias_a>
asmok: Do you mean webmin?
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04:34
<asmok>
can't add %loadbalacer%, but i can login in tc from console F1
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04:34
<asmok>
elias_a: no, ltsp-cluster-control/Admin
04:35
elias_a: see this mail: https://lists.ubuntu.com/archives/edubuntu-devel/2009-October/003142.html
04:35
<elias_a>
Oh - that one.
04:36
asmok: One more bug hunted? :D
04:36
<asmok>
this s first time i run this kind of problem, but this in now first time 64 server as a root, control and balancer server
04:36
elias_a: yes, indeed
04:37
elias_a: but i think there is nothing i can do, becuase TC boot all the way to the application server, LDM is missing, because i can't tell it to the root server by web admin
04:39
elias_a: btw i will do my howto for 64 environment, just chroot is of course i386
04:40
elias_a: i have my howto already, but i like know is this me, or real bug
04:41
<elias_a>
I have no chance of replicating the bug this week, nor weekend.
04:41
Actually I have not got a 64 bit computer for that either...
04:42
<asmok>
elias_a: yes, i wait for wise guys to show up...
04:45
elias_a: my friend is professional photographer, he upgrade his gears, so i buy his old one - Mac G5/Double processor/6G + Apple Cinema 20" - I put DEbian inside and then I have real server for fun...
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05:06
<asmok>
bye
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05:45
<CTShadow>
is there a way to send graphical messages to all logged in users?
05:46
with graphical messages i mean i.e. popup windows
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05:47
<Kicer86>
what kind of graphical interface do you use ?
05:47
kde?
05:47
<CTShadow>
gnome
05:47
<alkisg_work>
italc can do that
05:48
<CTShadow>
alkisg_work: i have tried italc, but it somehow can't connect to the desktops
05:49
<alkisg_work>
Distro/version?
05:51
<CTShadow>
ubuntu 8.04, ltsp-server version 5.0.40, italc-master version 1:1.0.7-0ubuntu2
05:53
<asmok>
alkisg_work: any idea about this: https://lists.ubuntu.com/archives/edubuntu-devel/2009-October/003142.html
05:53
<alkisg_work>
CTShadow: you may want to upgrade to a newer italc version from the edubuntu italc ppa
05:54
asmok, I've never even seen ltsp cluster... should I go on and read that? :
05:54
:)
05:54
CTShadow: how did you install italc?
05:55
CTShadow: https://launchpad.net/~edubuntu-italc-devel/+archive/ppa?field.series_filter=
05:55
<asmok>
alkisg_work: this is my fourth test installation, three others were i386, this is first amd64 - something wrong with cookies from server side?
05:55
alkisg_work: read all thread what i posted
05:56
<alkisg_work>
asmok: I've never seen ltsp cluster, I've never seen web admin... I have to way to know what could be wrong
05:56
**NO way ...
05:58
<asmok>
alkisg_work: TC boot and i can login via ssh in chroot, but there is no LDM, because i can't use web admin - there is no other way to tell 'LDM_SERVER = %LOADBALANCER%' !?
05:58
<alkisg_work>
asmok: how else can I say this? I DONT KNOW
05:59
<asmok>
alkisg_work: ok
05:59
<alkisg_work>
I've never used web admin. I've never even seen it
06:00
<asmok>
alkisg_work: so this yet another bug in amd64 server, i386 server works, even in KVM server - stephane knows, i wait for him
06:00
<alkisg_work>
I wouldn't know. Bye all.
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06:12
<asmok>
bye
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06:36
<CTShadow>
alkisg: i upgraded to a newer version and now it works. thanks for you help
06:36
<alkisg>
You're welcome :)
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08:36
<alkisg>
(non-ltsp related): I'm looking for a utility to bypass NAT connections, like ssh -R, but one that doesn't involve user accounts. E.g. I may be able to do this with netcat.
08:36
Clients A and B are behind NATs. Server S has a public IP. I got root access on all of them. I want to be able to map e.g. the vnc port 5900 of client A to port 12345 of the server, so that B can connect to it. Any utilities for that? (I guess I need two utilities, one for the server and one for client A).
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09:09
<nubae|work>
alkisg, take a look at using a STUN server or ICE, they are pretty good methods of bypassing NAT
09:10
<alkisg>
Can STUN be used to e.g. connect to an ssh server behing nat?
09:11
Or is it only used with specific software?
09:11
(I'm basically looking for both ssh and italc==vnc)
09:12
<_UsUrPeR_>
morning all
09:13
<alkisg>
!u
09:13
<ltspbot>
alkisg: Error: "u" is not a valid command.
09:13
<alkisg>
!U
09:13
<ltspbot>
alkisg: Error: "U" is not a valid command.
09:13
<_UsUrPeR_>
!_
09:13
<ltspbot>
_UsUrPeR_: "_" is (#1) Scotty!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!, or (#2) Gadi!!!!!!!!!!!!!!!!!!!!!!!!, or (#3) Q-FUNK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!, or (#4) jammcq!!!!!!!!!!!!!!!!!!!!!!!, or (#5) o is for ogra!!!!!!!!!, or (#6) rjune, rjune, go, go, rjune!, or (#7) Awesome Ahmuck
09:13
<_UsUrPeR_>
?
09:13
:D
09:13
<alkisg>
Heh!!! ;)
09:13
You didn't make it to the hall of fame yet... :)
09:13
<_UsUrPeR_>
guess not. Soon enough.
09:14
I think I have to make it to a BTS before people will acknowledge I exist
09:16
<alkisg>
nubae|work: also, I think you said something about telepathy and vnc? Can that assist me when both user A and user B are behind nats?
09:17
<_UsUrPeR_>
Does anybody know the process of adding or removing session managers in the ubuntu thinclient LDM?
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09:28
<nubae|work>
alkisg, yep, telepathy bypasses NAT by using STUN
09:29
not sure how stun works in a general sense, but with telepathy, its a parameter that is given to the connection manager
09:29
<alkisg>
nubae|work: and I assume that I can have my own STUN server (which does have a public IP, of course)?
09:30
<nubae|work>
usually STUN servers are public, and what they do is parse udp packets that tell the clients what ports to use
09:30
I'd guess so, yeah, though it might not even be needed
09:30
<alkisg>
Sounds nice...
09:30
<nubae|work>
one can use vinagre and vino to to video streaming via telepathy
09:30
that should actually bypass NAT
09:31
there was a nice article about this, let me see if I can dig it up... Nokia is behind this...
09:31
gtalk also uses stun
09:32
http://maemo.org/development/documentation/manuals/3-x/howto_use_stun_bora/
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09:32
<alkisg>
So there aren't any existing tools for vnc through stun, I'd have to patch up something, right?
09:32
Thanks nubae|work :)
09:33
<nubae|work>
theres code there too, but its all C, so pretty chineese to me :-)
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09:33
<jammcq>
good morning friends
09:33
<nubae|work>
well, I do remember it being mentioned that vnc can do nat traversal somehow, but can't remember exactly where
09:34
<alkisg>
"The technique is bound to UDP features, so STUN can not be used for e.g. TCP connections. "
09:34
<nubae|work>
yeah, thats where ICE and TURN come in
09:34
read on :-)
09:34* alkisg reads on :)
09:35
<_UsUrPeR_>
!j
09:35
<ltspbot>
_UsUrPeR_: "j" is jammcq!!!!!!!!!!!!!!!!!!!!!!!
09:35
<_UsUrPeR_>
boom! got it
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09:36
<nubae|work>
u might want to look at libjingle too
09:36
its the connection manager telepathy uses for video/audio streaming
09:36* alkisg has just found out that he wants to setup a "TURN" server :P
09:36
<nubae|work>
:-)
09:41
<_UsUrPeR_>
one more time: does anybody know where I change/remove the "profile" button in the lower-left corner of the LDM in 9.04?
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09:53
<sbalneav>
_UsUrPeR_: Don't think there's any switch to do it, you'd need to disable it in the source code.
09:53
!flash
09:53
<ltspbot>
sbalneav: "flash" is Yes, flash sucks. Make sure you have LDM_DIRECTX=True in your lts.conf file, or if it's just youtube you're after, try the HQtube plugin. Install greasemonkey for firefox, and see http://userscripts.org/scripts/show/24999
09:54
<_UsUrPeR_>
sbalneav: flash works great with localapps :D
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09:55* alkisg waits for an html5 plugin for youtube :)
09:56
<alkisg>
...directly playable by mozilla ;)
09:57
<jammcq>
sbalneav: Scotty !!!!!!!!!!!!!!!!!!!!!!!!!!!!
09:57
<CAN-o-SPAM>
hi all
09:57
<jammcq>
hey CAN-o-SPAM
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10:03
<sbalneav>
Hey jammcq
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11:34
<PMantis>
Hi guys, I'm trying to diagnose an LTSP5 issue, and I'm not as familiar with 5 as I am 4.2
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11:34
<PMantis>
Have a client that boots to not syncing, kernel panic, and sometimes to (initramfs) prompt
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11:34
<PMantis>
I think it's an ndb issue, but other clients boot OK
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11:37
<alkisg>
Error messages?
11:43
<PMantis>
alkisg: Just kernel panic - not syncing: attempted to kill init.
11:43
<alkisg>
What do you see above that?
11:43
<PMantis>
This is an Etherboot client.
11:43
<Gadi>
PMantis: #1 cause is lack of proper network driver in the initrams
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11:43
<PMantis>
Gadi: That's odd. When I left the school last week, it was working.
11:43
<Gadi>
ah, then thats not it
11:43
<PMantis>
Gadi: I walk in today and they're complaining.
11:44
I forget, where to I turn off splash, quiet?
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11:44
<Gadi>
ah, yes - last guy with this problem resolved it by turning off splash
11:44
hmm...
11:44
is it a PXE etherboot image?
11:45
if so, you can edit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
11:45
and remove "splash"
11:45
<PMantis>
Hmmm
11:45
<Gadi>
if it straight etherboot, you need to do the funny dhcpd.conf params
11:46
<PMantis>
I have this commented, and using nbi.img instead.
11:46
# filename "/ltsp/i386/vmlinuz.etherboot";
11:47
trying...
11:47
<alkisg>
PMantis: are you absolutely sure it won't boot if you force-send pxelinux.0 to it?
11:47
<PMantis>
disabled splash quiet
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11:48
<Pulga>
i was reading wiki ubuntu, debug local dev because I want to mount my TC's local HD. I'm having problems fuse module isn't runing. what can I do?
11:48
<johnny>
Pulga, but do usb keys work?
11:49
<Pulga>
i want to mount my hard disk
11:49
<johnny>
just asking..
11:49
<Pulga>
usb is going well
11:49
<johnny>
then local dev isn't what you need
11:49
read lts-parameters.txt.gz
11:49
<Pulga>
yes
11:49
<johnny>
you need a seperate parameter for local hard disk
11:49
<Pulga>
where it is?
11:50
<PMantis>
Oh, is loading nbi.img the best way to boot via etherboot?
11:50
<johnny>
Pulga, use the locate command to find it..
11:50
<Pulga>
i'm using ltsp 5
11:50
<Gadi>
LOCALDEV_DENY_INTERNAL_DISKS = False
11:50
<Pulga>
i'll see it now
11:51
<johnny>
Gadi, how long is that parameter there?
11:51
hmm.. why is it true by default Gadi ?
11:51
<Gadi>
its a big security hole
11:51
<PMantis>
alkisg: "Not a valid image", since this NIX doesn't support PXE.
11:51
<johnny>
is it?
11:51
<Gadi>
gives you unfettered access to local hard drive
11:51
<alkisg>
PMantis: ok, thanks for testing this
11:52
<johnny>
Gadi, it's also called a feature for many..
11:52
like Pulga here
11:52
<Gadi>
we like to err on the side of more secure
11:52* alkisg doesn't see LOCALDEV_DENY_INTERNAL_DISKS in lts-parameters.txt ;)
11:52
<Gadi>
and let people loosen security as needed
11:53
its in ltspfs since 0.5.7
11:53
I think
11:53
<johnny>
Gadi, then ubuntu should ship with more default options then .. commented out
11:53
<PMantis>
Gadi: the pxelinux.cfg/default didnt' help... what's the DHCP way for etherboot non-splash?
11:53* Gadi agrees whole-heartedly
11:53
<Gadi>
:_
11:53
:)
11:54
<johnny>
an then see /path/to/parameters.txt for more
11:54
<alkisg>
Gadi, is this with ltspfs, like the usb sticks? Cache flushing every 2 secs etc?
11:54
<johnny>
blahblalblah
11:55
/me flushes alkisg
11:55
<alkisg>
down the toilet? :P
11:55
<Gadi>
PMantis: hmm... I need to jump start some synapses
11:55
alkisg: yes - for localdev
11:56
<johnny>
Gadi, probably a good idea to ignore it for ide/sata devices
11:57
or perhaps just ide.. since sata can hotplug..
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11:58
<Gadi>
johnny: our LOCALDEV_DENY architecture is pretty flexible
11:58
the admin can modify as needed
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11:59
<johnny>
Gadi, i was referring to what alkisg said about the 2 second rule
12:00
<Gadi>
ah
12:03
<Pulga>
the parameter "LOCALDEV_DENY_INTERNAL_DISKS" is not written in lts-parameters.txt. other thing is that lts.conf says: **** THIS FILE SHOULD NO LONGER BE USED FROM HERE !!! ****. should I edit it?
12:04
<johnny>
not that one Pulga you need one in the tftp dir
12:04
/var/lib/tftpboot/ltsp/i386/lts.conf
12:04
<Pulga>
ok
12:05
put this parameter in /var/lib/.....??
12:05
LOCALDEV_DENY_INTERNAL_DISKS
12:05
<johnny>
add [default] at the top of the file before it
12:05
[default]
12:05
LOCALDEV....
12:09
<Pulga>
after doing this, i'll restart my TC and where its HD will be mounted??
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12:11* Pulga is rebooting
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12:19
<Pulga>
hi
12:19
I reboot tc and local HD is already mounted in my desktop.... thanks a lot!!!
12:22
<PMantis>
Gadi: There... swapped out the NIC for an Intel card - client works now.
12:26
Ugh, Nm... just booted it in the lab, brought it back to classroom, dead - video not working.
12:27
Time for diff thin client.
12:27
i gtg
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12:36* alkisg wonders why LOCALDEV_DENY_INTERNAL_DISKS=False mounted his NTFS partition as read only...
12:37
<johnny>
alkisg, because it is probably using the ntfs kernel module?
12:37
maybe?
12:38
<alkisg>
hey, I'm a linux newbie, how would I know?
12:38
<johnny>
alkisg, do you have the ntfs fuse driver?
12:38* alkisg thinks that johnny is probably right :)
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12:38
<johnny>
i don't know how fuse to fuse works.. or if it does
12:38* alkisg looks...
12:39
<alkisg>
alkisg@alkis:~$ LANG=en_US.UTF-8 sudo chroot /opt/ltsp/i386 dpkg -l ntfs-3g
12:39
No packages found matching ntfs-3g.
12:39
I wonder what will happen if I install it..?
12:40
<johnny>
that would explain your problem
12:40
or part of it
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12:42* alkisg installs ntfs-3g and crosses his fingers...
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13:03* alkisg reports that by installing ntfs-3g and setting LOCALDEV_DENY_INTERNAL_DISKS=False he was able to get write access to his local ntfs partitions.
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