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


Channel log from 25 February 2007   (all times are UTC)

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00:25
<nick125_lappy>
Is there an easy way to setup ltsp in some kind of chroot or something (so I don't have to install X and such on my server)
00:25
?
00:25
(for the server)
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00:49
<ipl>
anybody able to help me with a ltsp kernel panic when booting clients?
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03:04
<Bhaskar>
how to start to install ltsp server
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08:35
<jd86>
Hi, I'm trying to setup swapping over nbd (with ltsp 4.2 update 3) and i have it set to Y, and have ltspswapd running on server, but I don't see anywhere in logs where it attempts to connect, and there is no swap available. I checked out the wiki on this -- any hints?
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08:39
<cliebow_>
jd86:did you check the wikji?
08:39
<jd86>
cliebow_, i looked at the Swap page on the wiki, and I'm still browsing for more hints
08:40
<cliebow_>
how much mem in the clients?
08:40
<jd86>
128M on this one, some 64
08:41
I've been having intermittent problems when viewing very heavily graphic wepages where the client will lock up... i assume its due to running out of memory (well, I have nothing else to try but that)
08:41
<cliebow_>
you dont need swap at all..i dont think..most of mine are 32 some 64
08:41
jd86: can you set up to ssh in to the cliernts and run free?
08:41
<a5benwillis>
Good morning
08:41
<cliebow_>
HJi!
08:42
<jd86>
yes, I ran free, 0 on swap
08:42
<a5benwillis>
I can now log in via SSH cliebow_
08:42
<jd86>
(I'm on a client now)
08:42
cliebow_, well could it have to do with the resolution or anything? I'm boggled as to why it happens, and its just amatter of going to a page with lots of heavy graphics and it dies.
08:43
<cliebow_>
Cool!! Cool!..where was the hangup?
08:43
<jd86>
I mean there are 80M free at the moment, maybe I'l try to go to the page and watch free as it loads (if possible
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08:44
<cliebow_>
i ran a 64 meg client for four days with mozilkla gimp ad firefox.an never swa more than 33 meg
08:44
<jd86>
cliebow_, i'll try going to the page like last time, see if it does it again (if it does, I'll be parting)
08:44
<cliebow_>
a5benwillis, what was the deciding factor?
08:46
<a5benwillis>
lots of things. I can log in now but my prompt says "I have no name@xx.xx.xx.xx
08:46
but that might not matter
08:46
Of course the reason Im getting that message is because the user logs in but cant be mapped to a user in the passwd file.
08:46
<cliebow_>
i ha that at one point..dont remem haow i fixed it
08:47
yeah
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08:47
<a5benwillis>
do you know the command to create a user from command line?
08:48
luseradd?
08:48
sounds familier
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08:49
<jd86>
yeah, it died again.
08:49
i watched it and kept typing free
08:49
and it went to 80M used, then 90M and then i saw the kernel junk and it killed X
08:50
is there any way to see if it attemped to turn swap on or anything?
08:50
<cliebow_>
see if you can catch one of the smart people here..
08:50
<jd86>
I run a resolution of 1280x1024 -- maybe higher resolutions can consume more memory?
08:51
<cliebow_>
perhaps..
08:52
<jd86>
or maybe it has something to do with something completely different -- but I can reproduce (just browse to that page)
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09:11
<a5benwillis>
in and out quick
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09:18
<cliebow_>
a5benwillis, :what was deciding factor??
09:19
<a5benwillis>
I think it came down to just a slight change in a few of the auth lines
09:20
Im still usure of one thing though. Are you pretty knowledgable with the ltsp thin client log on process?
09:20
got a questions about how it works
09:20
<cliebow_>
not in ltsp5
09:21
<a5benwillis>
i dont have 5, i think its 4 something
09:21
Edubuntu
09:21
.
09:21
I'll ask anyways
09:23
<cliebow_>
i am on the way out the door..
09:23
<a5benwillis>
oh ok
09:23
ttyl
09:23
<cliebow_>
but if you used ltsp-build-client you arte using 5
09:24
if ldapadmin..it is 4.2..
09:24
<a5benwillis>
it comes built into edubuntu so I didnt run anything
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11:24
<mistik1>
jammcq: I was reading the success stories page the other day, I was wondering why it was so small but it slipped my mind to ask you about it
11:25
a5benwillis: sorry, I went to sleep a little early last night
11:28
<a5benwillis>
no problem
11:28
did you see my msgs?
11:28
I can log in via SSH now, though I dont think its working exactly right. This may just be an incompatibility though.
11:29
.
11:29
I can log into ssh, but Im 'impersonating' another user on the system to fool SSH. I just need someone who understands LTSP 5 and how the clients log in to clear af few questions up for me.
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11:46
<mistik1>
a5benwillis: I would not be that person yet
11:46
I dont have a full grasp of what exactly LDM is doing, I have an idea but not the whole deal
11:48
<a5benwillis>
I guess I need to know first what version of ltsp Edubuntu runs. I can read documentaion
11:49
<vagrantc>
what do you need to know about LDM ? i know it pretty well
11:50
<a5benwillis>
Im trying to get my users to be able to authenticate via my Novell NDS servers
11:50
<vagrantc>
in short, LDM is a GUI frontend for "ssh -X"
11:51
hmmm....
11:51
<mistik1>
vagrantc: hey
11:51
<vagrantc>
you'd probably need a pam plugin for that, if it exists
11:51
<a5benwillis>
I've been focusing on getting the users to be able to log into SSH. Mainly because I have been told thats the first step in booting the thin client.
11:51
.
11:51
<vagrantc>
mistik1: hmmm?
11:51
<mistik1>
vagrantc: he is using a pam module
11:51
<a5benwillis>
I can ssh into the edubuntu server and log in as an NDS user noe.
11:51
<vagrantc>
but it doesn't work for LDM ?
11:52
<a5benwillis>
Using a pam-NCP module and an NSS module for NDS in my nsswitch.conf
11:52
.
11:52
Well,
11:52
Im at home now so all I can test is the SSH part.
11:52
.
11:52
<vagrantc>
if ssh works, most likely LDM will work.
11:53
<a5benwillis>
The trick is that I have to trick SSH into giving me a session by impersonating a local user.
11:53
When I log in to the client. What controls THAT authentication?
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11:53
<vagrantc>
i don't really understand what you're trying to do ... ?
11:54
<a5benwillis>
Can I edit /opt/ltsp/i386/etc//pam.d/login to have it use my pam module as well?
11:54
<vagrantc>
that would only be useful if you're logging into the client itself ...
11:54
<a5benwillis>
or is that even needed?
11:54
let me start over
11:55
My main goal is to enable my users to log in via thin client and have them authenticated via my NDS server.
11:55
<juvonen>
Hi, problems with sound on thin client, sound comes from server
11:55
<a5benwillis>
.
11:55
<vagrantc>
!sound
11:55
<ltspbot`>
vagrantc: "sound" is http://wiki.ltsp.org/twiki/bin/view/Ltsp/Sound
11:55
<vagrantc>
a5benwillis: ok ...
11:56
<a5benwillis>
I have been concentrating on getting the users to be able to authenticate to SSH. I can now ssh into my server "ssh sshtest@localhost"
11:56
<juvonen>
ok I try that
11:56
<a5benwillis>
I get a password prompt. When teh authentication happens my nsswitch looks to NDS to find the user since they dont exist localy.
11:57
At the same time the nss module assigns the user an UID of 22000, it assigns this same uid for ALL users who are looked up via NSS>
11:57
.
11:58
Then authentication is handed to my PAM module. The users password is verified and they get an SSH session.
11:58
.
11:58
<vagrantc>
ok ... that might not work so well with LDM ...
11:58
<a5benwillis>
Since ALL users have uid 22000 I have created a dummy user in passwd so their SSH session is impersonated.
11:58
.
11:58
<mistik1>
that cant be too secure
11:59
<a5benwillis>
Thats the whole process... I cant test the LDM side from here so I wanted to check with you guys.
11:59
mistik1: Thats the only way for it to work. Other than populatin UIDs in all of my 16k user accounts :-(
12:00
<mistik1>
a5benwillis: I'm thinking that you may be better off not using LDM at all in favor or gdm that runs on the server space
12:00
<vagrantc>
a5benwillis: so, essentially, you're ssh'ing to the server as a single user for all logins, which then logs in as the target user ... ?
12:01
<a5benwillis>
That was my hope. That once the SSh session is established the users actual session would be authenticated similar to GDM
12:01
<mistik1>
a5benwillis: what happens when you take ssh out of the equation?
12:01
<a5benwillis>
I was under the assumption that the SSh session was mearly the transport for the actual login and subsequant x session.
12:01
<vagrantc>
a5benwillis: i can't make any guarantees ... it might work with LDM, but it might not ...
12:02
<a5benwillis>
mistik1: No idea. Havent gotten that far yet. One option that was mentioned is to use xdmcp
12:03
<mistik1>
I would prolly have played with that before ssh
12:03
reduce the steps to auth to the NDS, I may be wrong though
12:03
<a5benwillis>
that just dumps LDM though right? I loose encrypted sessions and the built in compression.
12:03
<vagrantc>
the problem being that LDM doesn't properly implement ssh-askpass , so if it asks for your password a second time, it won't work. but if it uses the initial password given on ssh, it should work fine.
12:04
<a5benwillis>
Has to be easier than this though!!! Its been a tough ride so far.
12:04
<vagrantc>
you loose encryption, the compression is probably not really meaningful
12:05
<a5benwillis>
true
12:05
so just by changing the screen setting I can test without LDM?
12:05
<vagrantc>
yes.
12:05
well, sort of
12:06
<a5benwillis>
Then xdmcp will use the GDM login and pam configurations?
12:06
<vagrantc>
you'll need to configure GDM to allow xdmcp (or KDM or XDM or WDM)
12:06
<a5benwillis>
should be just a check box in GDM
12:06
ebable xdmcp
12:06
erm enable
12:06
<vagrantc>
also, as an alternative to LDM, you could use SDM, which does properly implement ssh-askpass ... but it's not as pretty
12:07
<a5benwillis>
I'll be able to test what I have so far in the morning. I really dont like the way I've had to configure SSH.
12:08
As an option I may even right a better NSS module that can assign and add users to the passwd file so they will have uniqe uid's then their sessions could be authenticated properly.
12:08
.
12:08
Actually they ARE authenticated properly and given individual session with this setup.
12:08
As long as the SSH session is transparent I dont see why it wont work.
12:10
<vagrantc>
a5benwillis: what i'm a little confused about is ... when you do "ssh sshtest@localhost", is that the target user, or the username that all the aaaccounts share ?
12:10
<a5benwillis>
Without the user impersonation I get the "I have no name!" message when I log in.
12:11
thats the target user. When the session is built the prompt says: "sharedsshuser@localhost" even though they are authenticated as themselves.
12:11
<vagrantc>
ok ... then my guess is LDM will work fine.
12:11
presuming it doesn't ask for a password a second time.
12:13
<mistik1>
vagrantc: about how long does the deb ltsp5 take to boot compared to ltsp-4.* ?
12:13
<vagrantc>
mistik1: i've never used ltsp-4.x so i have no real comparison
12:13
mistik1: and my primary test environment has a very slow server.
12:14
<mistik1>
wow
12:14
Never even in testing?
12:14
<vagrantc>
i could boot it and see how long ...
12:14
<mistik1>
heh
12:14
<vagrantc>
and give you a slow end of things to compare it to ...
12:14
<mistik1>
You dont have to on my behalf
12:14
<vagrantc>
it would be good to know, as that's the primary complaint i've seen
12:14
<a5benwillis>
vagrantc: I'll know in the morning :-D
12:15
<mistik1>
vagrantc: looking at the configure_x() running debconf-communitcate that many times much suck
12:16
That's prolly a big part of the process
12:16
<vagrantc>
yeah, debconf is slow as molasses
12:16
though i think the primary problem is how slow LDM is, actually.
12:17
for some reason, it takes forever to load.
12:17
<a5benwillis>
vagrantc: May I ask what you do with LTSP? Are you a developer?
12:17
<mistik1>
all that python code man
12:17
<vagrantc>
a5benwillis: i mainly have been working on LTSP 5 in debian.
12:17
a5benwillis: so i work closely with ogra, who works on LTSP in *ubuntu
12:18
<a5benwillis>
Should be close to my ubuntu then
12:18
as you just sadi....
12:18
sadi
12:18
<vagrantc>
mistik1: my suspicion is that it's the python-glade stuff ...
12:18
<a5benwillis>
said
12:18
<vagrantc>
yeah.
12:19
<mistik1>
The mere fact that you guys coded that dm is impressive though
12:19
<vagrantc>
i didn't do much of anything with ldm, except a few minor tweaks.
12:20
the concept is actually very simple, though. i wrote SDM years ago, which is similar to SDM but in shell.
12:20
er, similar to LDM
12:21
<mistik1>
simple to the likes of you ;)
12:21
<a5benwillis>
exactly lol
12:21
<mistik1>
Jim keeps telling me otherwise but i'm no programmer
12:21
I am however a problem solver ;)
12:21
<vagrantc>
it really is just
12:22
"ssh -X server"
12:22
<mistik1>
ooooooooooo
12:22
<a5benwillis>
LDM is or SDM?
12:22
<mistik1>
qemu has implemented PXE
12:22
<vagrantc>
er, ssh -X user@server
12:23
a5benwillis: both.
12:23
<a5benwillis>
ah
12:23
<mistik1>
w00t
12:23
<vagrantc>
mistik1: really?! :)
12:23
<mistik1>
YES
12:23
0.8.4
12:23
badass
12:23
<vagrantc>
that makes me very, very happy.
12:23
<a5benwillis>
vagrantc: So when the x session is displayed. Where does THAT login's settings come from?
12:24
<mistik1>
vagrantc: trust me, you are not alone in that happiness ;)
12:24
<a5benwillis>
such as pam etc
12:24
<vagrantc>
a5benwillis: from the users home directory on the machine they're logged into.
12:25
<mistik1>
vagrantc: I'm about to implement a virtual server for a client with XP running in qemu
12:25
This LAB has one app they need to run on a windows machine and since there are none at that location it goes into qemu on one of the linux app servers
12:25
<vagrantc>
mistik1: i guess that beats implementing it in hardware :)
12:26
<mistik1>
damn straight
12:26
<a5benwillis>
vagrantc: What if the user doesnt have a home directory on the server?
12:26
<mistik1>
FOr me it means no windows machine to admin
12:26
<vagrantc>
a5benwillis: then many applications will probably have a hard time running.
12:27
<mistik1>
vagrantc: They tried to charge my client ~ $12,000.00 for new machines to run one damn app
12:27
I was not having it
12:27
The hardware was old as dirt too
12:28
Not even modern stuff its just loaded with thier one app to take data out of Medical Manager and send it to the LAB
12:28
<vagrantc>
heh.
12:29
<mistik1>
shame what some folks have been putting up with in the M$ governed world
12:30
<vagrantc>
mistik1: so qemu is sufficiently fast?
12:30
<mistik1>
I dont see why not
12:30
It just grabs a couple hundred KB via tcp/ip
12:31
once a day
12:31
with kqemu I dont see why it cant handle that
12:31
Well I'm setting up a test environment for them to test thier software tomorrow
12:32
And guess what they dont even have to leave thier office to play ;)
12:32
They will be presented with the qemu in a browser, LOL
12:37
<vagrantc>
heh.
12:38
<mistik1>
vagrantc: where does sdm live
12:38
Where can i take a look at your code
12:39
<vagrantc>
mistik1: it's in debian, and i think ubuntu universe ... there's an svn repository somewhere
12:44
<mistik1>
got it
12:44
hehe
12:45
vagrantc: I heard you say earlier that is was just shell, so I thought I wonder why he dont use Xdialog or something, Well I'm looking at your code right now
12:46
all I could do was just laugh
12:46
good job
12:58
<vagrantc>
heh.
12:58
mistik1: yeah, i supposed its not "just shell"
12:58
<mistik1>
Its elegant shell ;)
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13:18
<nick125_lappy>
afternoon everyone
13:20
<vagrantc>
just barely afternoon here
13:20* nick125_lappy just woke up
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13:56
<erdinc>
hi everyone
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14:36
<kaos01>
can i burn CD locally with ltsp ?
14:38
<sepski>
kaos01, with a lot of blood, tears and misery, probably yes. But it's usualy easier and faster just using a regular workstation for such tasks
14:39
<kaos01>
ok, so it doesnt work with device support
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14:40
<kaos01>
also i have an problem using net grub, picking up menu.lst is a matter of luck
14:40
sometimes the menu appears sometimes it doesnt and the boot process hangs
14:41
<Egyptian[Home]>
evenign all
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15:21* erdinc bye aLL...
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18:27
<msaul>
I seem to only get my admin user to play sound using gnome
18:27
but no other users I create
18:27
Does anyone have any ideas where I might be going wrong?
18:28
I am using Edubuntu 6.10 with LTSP included
18:28
<Shingoshi>
Do you have to run alsaconf for each user?
18:28
<msaul>
I believe esd
18:29
<Shingoshi>
Or is it system wide?
18:29
<msaul>
System wide
18:29
There is a gconf-edit command
18:29
setting to esdsink
18:29
and making it mandatory
18:29
It works great on a thin client for my admin user
18:29
<Shingoshi>
I just compiled a bunch of pkgs yesterday and lost my conf. Had to run alsaconf again.
18:30
<msaul>
but no other users that I created in addition.
18:30
<Shingoshi>
I really am not the person to be asking. I really don't know that much about sound.
18:31
<msaul>
OK, I will just hand around a little while and see if there is someone else
18:31
<Shingoshi>
In fact, I don't know much of anything! ;-D
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18:31
<msaul>
no worries
18:31
<Shingoshi>
LOL
18:32
I've been up way too long. I need to go to bed after almost 24 hours. I am getting way too silly.
18:33
<msaul>
as your attorney, I advise you start sleeping heavily...
18:33
<Shingoshi>
Yeah!!! LOL LOL But doctor, I can't stop laughing.
18:43
<kaos01>
i have a problem when users log out of gdm, sometimes they just end up with a blue bank screen, instead of a new gdm login screen
18:44
<msaul>
would that be the root window?
18:44
<kaos01>
yes
18:45
<msaul>
I think there may be some documentation in troubleshooting in LTSP
18:45
manual, but usually that is to get it to work in the first place
18:45
haven't had anything like that...
18:45
sorry...
18:47
l8r
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20:25
<a5benwillis_>
.
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20:50
<cliebow_>
a5benwillis_, ...
20:51
8~)
20:51
<a5benwillis_>
lol
20:51
howd that happen?
20:53* nick125_lappy yawns
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22:32
<vagrantc>
hmmm... took 2 minutes from the start of syslogd to LDM login screen.
22:32
that does not seem timely.
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23:09
<ipl>
anybody available to help with a client boot issue?
23:10
<vagrantc>
describe the issue, and if anyone can help, they will do so
23:11
<ipl>
client boots to a point where i see runnint /linuxrc mountint /proc then kernel panics
23:11
running /linuxrc I mean
23:12
Kernel panic - not syncing: Attempted to kill init!
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