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


Channel log from 22 February 2011   (all times are UTC)

00:07
<muppis>
Any experience from eBeam Interact ? Should it be installed to chroot to work perfecyl
00:08
perfectly..
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03:16
<alkisg>
!xauthority
03:16
<ltspbot>
alkisg: "xauthority" :: to access the client X session from a local root shell, try: eval $(tr '\0' '\n' < /proc/$(pidof -s ldm gdm-simple-greeter gnome-session | cut -d' ' -f1)/environ | egrep '^DISPLAY=|^XAUTHORITY=') && export DISPLAY XAUTHORITY
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03:22
<markit>
hi alkisg :) Bad luck at my school, APC ups is not working anymore (has been turned on / off max 50 times since installation), lol
03:22
we have received some money, I'm thinking about replacing the recycled PC with new ones like these: http://www.yashiweb.com/it/specifiche_tecniche/9822/
03:23
anyone knows if Intel GMA X4500 is good in compatibility and decent performances?
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04:01
<HrdwrBoB>
markit: it's perfectly cromulen
04:01
cromulent
04:02
for normal desktop purposes
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04:13
<markit>
HrdwrBoB: so libreoffice, gimp, maybe a little of blender (just in case)
04:13
work decently? We have HD screens (1920x1080 res)
04:14
<HrdwrBoB>
blender .. mmm
04:14
everything else great
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04:25
<markit>
they could become "fat clients" to increased performance too
04:26
only porblem I've never deploied the "fat" version of ltsp, I forecast new problems in exchange of the old ones, lol
04:30
<alkisg>
Teachers here didn't report any fat client specific problems
04:35
<markit>
alkisg: hi my master/teacher/preferred_guru, how are you?
04:35
<alkisg>
Heh, hello
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05:18
<HrdwrBoB>
heh
05:18
I am very familiar with exchanging problems
05:18
we use HP thin clients
05:18
HP seem to release a new one every 12 months
05:18
for no real good reason
05:21
<mnemoc>
marketing :)
05:26
<markit>
mm just got a call from a professor... one PC frozen while saving work, another had OpenOffice not starting and was not possible logoff either, and all PC seems incredible slow
05:26
my guess is they are using a very large image / images (pictures) in Impress
05:26
but the fact that so often pc freezes is really bad
05:26
often = one every lesson, or something less
05:29
<alkisg>
Do you still have that 512 MB network swap?
05:29
Did you verify that it's working?
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05:40
<mnemoc>
are there distributors of lucidatech machines? I can't get a response from them :(
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06:44
<markit>
alkisg: I've 512MB swap, and not verified (I tested the setup on my home, but not at school, just applied the same settings that worked at home)
06:45
<alkisg>
I wasn't able to make clients hang (with big pictures in impress and firefox etc) when I had enough swap
06:45
<markit>
also impress and libo 3.3 is not very fast itself, and the server has only 8GB for 16 clients
06:45
<alkisg>
RAM on the clients? 256?
06:45
<markit>
alkisg: what about increase swap to 1GB? wondering if will put my lan on it's knees
06:45
<alkisg>
No 512 is enough, if it's actually working
06:45
<markit>
alkisg: from 256 to 512, depends, don't know that particular one
06:47
<alkisg>
My experience with hangs is something like this: 70% = swap, 20% = graphics card, 5% = network problems, 5% = no idea
06:52
<muppis>
Any hint for this? Failed to save user : Failed to add user to LDAP database : cn: value #0 Invalid per syntax.
06:52
<markit>
mine at the moment are 100% no idea :)
06:53
alkisg: we are going to buy some new PC that will act as fat client, do you strongly suggest have a HD also for local swap?
06:53
<alkisg>
No, imho network swap works just fine
06:53
<markit>
I try to have 4GB ram
06:53
<alkisg>
I couldn't get it to crash
06:53
<markit>
ok
06:54
<alkisg>
Tested with e.g. 128 RAM on the client and forced it to use 400 MB swap. It crawled but it didn't hang.
06:54
When I closed firefox and impress and gimp etc everything was fine again
06:54
(fast)
06:54
<markit>
unfortunatly I've not there, and the teacher called me too late to ssh in and do a fast check
06:55
I have to tell them a couple of "mainteniance" things also, like kill zombie processes
06:55
and students are saving documents in the "share" area instead of their own home, don't know why
06:56
or they create a directory inside Documents with their name
06:56
even if I've explained them that each student has his OWN home, indipendent
06:56
from others
06:56
we need some hours of basic computer trainning, OMHO
06:57
I have the issue of acl and shared area unresolved still... things seems to be overcompliceted sometime wiht GNU/Linux
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06:58
<markit>
things that should be basic in a multiuser environment
06:58
ok, back to my work now :)
07:00
<alkisg>
markit: To check if the swap thing is working, run `free` from a localxterm
07:00
!localxterm
07:00
<ltspbot>
alkisg: "localxterm" :: while sitting on a thin client, open a gnome terminal. In that, run: ltsp-localapps xterm. An xterm will open. That xterm runs locally, so any commands you enter there are executed directly on the client.
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07:02
<markit>
alkisg: any suggestion for logging useful info?
07:03
<alkisg>
Logging what?
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07:17
<markit>
anything that could be useful.. like messages
07:17
or syslog
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07:21
<alkisg>
The clients support remote logging, if you're interested in that
07:22
SYSLOG_HOST
07:23
And LDM_SYSLOG
07:24
<markit>
ok, thanks a lot
07:24
I will activate and hope to find something useful
07:24
<alkisg>
There's also ~/.xsession-errors for each user
07:25
<markit>
oh, yes, really !
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07:29
<mgariepy>
good morning everyone
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07:44
<mr_engblom>
is anyone knowing how to fix usb mount problem in ubuntu maverick? when i insert a stick into the client, it only appears on the server in /tmp/.username-ltsp
07:45
it should bind to /media/username
07:45
this is an ubuntuserver upgraded from karmic to lucid... and straight after to maverick
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07:46
<markit>
mr_engblom: I've kubuntu 10.10 at school, and it mounts on /media/usrname
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07:49
<mr_engblom>
markit: then i wonder what really failed in the upgrade
07:50
<markit>
maybe is gnome related, I use KDE
07:51
(that does not support notification with ltsp, unfortunatly...)
07:51
mr_engblom: do you use ACL by chance? (not related with your problem, is my problem :))
07:51
<mr_engblom>
i am using kde3 (trinity)...
07:51
yes, i use acl
07:53
<markit>
I've not the details here, but I want to have 2 directories in /srv
07:53
one where students and teachers can read/write
07:54
and another where teachers can r/w, but students only read
07:54
with my setup if a teacher CREATES a file in the r/w everything is fine
07:55
if instead COPIES from his home to there, the file permissions are "reduced" and only himself can r/w, other only read, if I remember correctly
07:55
do you have the same need and was able to solve in a brilliant way? :)
07:55
<mr_engblom>
first set "chmod g+s folder"
07:56
<markit>
g+s? isn't set acl "default" enough?
07:56
<mr_engblom>
i do not know, that i did first...
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07:57
<markit>
:) ok, go on
07:57
I need a working solution, will investigate "why it works" later, lol
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07:59
<mr_engblom>
markit: this is how i have been setting up a directory that both teachers and pupils can read and write to: http://pastebin.com/zqmDqbYH
08:02
it is just to change the rwx values according to your need
08:02
r-- will give only read rights
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08:03
<mr_engblom>
r-x will give read and execute (needed for entering subdirectories)
08:05
setfacl -m group:teachers:rwx folder - that will give full rights to the teachers
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08:10
<mr_engblom>
my ltspfs problem is really annoying!!
08:21
markit: please, pastebin your /etc/ltsp/dhcpd.conf
08:22
markit: apparently some changes should be done there when you go to a newer version of ubuntu
08:24
or can anyone else with ubuntu 10.10 pastebin their /etc/ltsp/dhcpd.conf?
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09:05
<mahdi_ja>
hi all
09:05
i install ltsp in fedora(k12linux)
09:05
and i boot client to this .
09:06
i see login screen but i do not know what user and password i must use for login
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09:27
<mahdi_ja>
for login to ltsp host i must use host user ?
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09:56
<fuser>
hello, is anybody using ltsp-cluster with multiples linux apps servers? i would like to know how keep syncronized the /home 's, i mean i don't understood how the loadbalancer works
09:57
is it just redirect the conections?
09:58
do i need to use a cluster filesystem below? like glusterfs for example
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10:00
<fuser>
or there is a ltsp-cluster solution to this issue
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10:27
<[GuS]>
Guys, i was having a problema bout Read-only filesystem in a newest LTSP installation in Gentoo, to make it work i ad to modify ro to rw in /etc/exports /opt/ltsp *(rw,no_root_squash,async,no_subtree_check). Is this ok?
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10:49
<alkisg>
[GuS]: don't use rw nfs root, because then any client can write anything to your exported NFS disk and that's a major security issue
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10:50
<[GuS]>
alkisg: if i dont, when the client boots it says read-only filesystem full of errors...
10:50
<alkisg>
OK, but that means the problem is elsewhere
10:50
Mounting nfs rw is not a proper solution
10:51
<[GuS]>
I know... but i dont know what else to do... i been one week with this now :S
10:51
<alkisg>
Check your initramfs, something is wrong with the COW setup
10:51
Why don't you use some distro where it's more out of the box?
10:51
<[GuS]>
alkisg: believe me i whish so... but in my work we use Gentoo :S
10:51
and everytime i've install ltsp5 in gentoo i have a new error...
10:52
:(
10:52
<alkisg>
E.g. you can have an ubuntu (or whatever) chroot on a gentoo server
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10:52
<alkisg>
Right, "gentoo is getting really close" ==> errors still happen...
10:52
<[GuS]>
yeah....
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10:53
<[GuS]>
i've tried for me once ltsp in debian and ubuntu, 0 problems... but in gentoo... now with this read only filesystem i dont know what more to look at...
10:53
<alkisg>
What system does Gentoo use for the initramfs? Dracut?
10:54
<[GuS]>
Yep, iirc
10:55
<alkisg>
http://en.gentoo-wiki.com/wiki/Initramfs
10:56
<[GuS]>
i've already tested if the problem was cause a old quickstart profile. That didnt solved, reinstalled ltsp-server, reinstalled quickstart and re-built again ltsp client... no look at all... and is a fresh Gentoo installation... i've installed before ltsp5 in gentoo many times, fixed errors but works... now does not
10:56
<alkisg>
If that's the default, then it's not dracut...
10:56
<[GuS]>
well, i am not sure then...
10:57
<alkisg>
Anyway it's there you should be looking
10:57
To check why the ltsp code in the initramfs/dracut/whatever doesn't succeed in establishing your cow disk
10:58
<[GuS]>
ok
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12:47
<cliebow>
Gadi!!I find that by manually adding sambaSamAccount and sambaSID to a machine account I am able to join a domain..Why does this not happen automagically?
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13:18
<mahdi_ja>
hi all
13:19
in client side when i want log in
13:19
after enter user name and password i get this message
13:19
no response from server restarting
13:22
please help me
13:24
<alkisg>
distro/version ?
13:25
<mahdi_ja>
alkisg, fedora 14
13:25
<alkisg>
Can you login with that username/password on the server?
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13:26
<mahdi_ja>
alkisg, no i can
13:27
for example i create another user on the server same my own user but i can login with this user
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13:27
<mahdi_ja>
alkisg, i must create special user for ltsp or i can user ordinary user in the ltsp host
13:27
<alkisg>
Any ordinary user on the server will do
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13:29
<wakko222>
is ltsp still broken in F14
13:30
<mahdi_ja>
two days a go i get support for ltsp in fedora 14
13:30
https://bugzilla.redhat.com/show_bug.cgi?id=652896
13:31
i do all things very easy but at the last i get this message and i can not login to the ltsp server
13:32
no response from server restarting
13:32
<wakko222>
I've just learned about LTSP in the last couple of weeks, but want to try it. Is there a good getting started page?
13:33
<alkisg>
mahdi_ja: you can also see the logs for authentication problems: tail /var/log/auth.log
13:34
<mahdi_ja>
alkisg, yes i do this
13:34
alkisg, thank 's for your attention
13:34
<alkisg>
Do you see login attempts there?
13:34
<wakko222>
Is this still accurate? - https://fedorahosted.org/k12linux/wiki/InstallGuide
13:34
<mahdi_ja>
alkisg, yes
13:34
<alkisg>
And any error messages?
13:34
<mgariepy>
wakko222, edubuntu ship with a live ltsp dvd
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13:35
<wakko222>
I'm used to Fedora and would like to use it. Sorry.
13:35
<mahdi_ja>
alkisg, after show the no response from server restarting
13:35
<[GuS]>
mahdi_ja: is not that a ssh keys problem?
13:35
<mahdi_ja>
i get some error for example can not find ltsppci command i think
13:36
<alkisg>
Paste the exact error, maybe someone that knows fedora has seen it before
13:36
<mahdi_ja>
[GuS], yes it may
13:36
alkisg, i can not access server now
13:37
[GuS], how i can test ssh keys
13:38
wakko222, https://fedorahosted.org/k12linux/wiki/InstallGuide is very good document
13:38
<[GuS]>
did you updated you ssh keys with the ltsp command?
13:38
<mahdi_ja>
[GuS], no
13:39
<wakko222>
ok, i tried a few weeks ago and it failed on the ltsp-build-client
13:39
<mahdi_ja>
wakko222, go to this page
13:39
wakko222, https://bugzilla.redhat.com/show_bug.cgi?id=652896
13:39
<wakko222>
ok i have it from before, i will try again.
13:39
<mahdi_ja>
[GuS], ltsp-update-sshkeys
13:40
[GuS], i must use this command
13:40
<[GuS]>
yes in the server
13:40
<alkisg>
Doesn't fedora use an internal subnet?
13:40
So that the server IP is always the same?
13:40
<mahdi_ja>
alkisg, yes feodra use internal subnet
13:41
<wakko222>
alkisg - usually 10.42.43.* if set up in network manager
13:41
<alkisg>
So the problem might be something else - you need access to the server to try things though
13:41
<mahdi_ja>
alkisg, 73.110.100.101
13:42
it is a example thin ip address
13:42
i use tow nic card
13:44
alkisg, thank you
13:45
alkisg, Tomorrow i test all these
13:46
alkisg, I'm sorry to disturb you
13:46
<alkisg>
mahdi_ja: you're welcome, good luck
13:46
<mahdi_ja>
alkisg, thank you.
13:47
<wakko222>
mahdi_ja - I see the file in the bug report and where to save it. What should I save it as (name)?
13:47
<mahdi_ja>
wakko222, which file
13:47
<wakko222>
weren't you refering to comment 16 and the attachment?
13:49
ok, now I'm not sure. I am getting the ERROR: fc14 not supported and am stuck there
13:49
<mahdi_ja>
wakko222, /etc/sysconfig
13:50
wakko222, /etc/sysconfig/ltspdist
13:50
<wakko222>
ok, and that fixes the error?
13:50
<mahdi_ja>
you must edit ltspdist file with new content
13:50
wakko222, yes
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18:45
<jhutchins_lt>
Interesting. This is an ipod connected to a client running ltsp from this server:
18:45
root@minerva:~# ls -l /media/marilyn/
18:45
ls: cannot access /media/marilyn/MJEVANS: Permission denied
18:45
total 0
18:45
d????????? ? ? ? ? ? MJEVANS
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21:17
<MorningSon>
so if i use 'ltsp-build-client --fat-client ubuntu-desktop' will the ltsp server give it the whole image at each boot?
21:18
or is it about the same as the image used for thin clients just configured so that some apps run locally based on the lts.conf file?
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22:03
<nutron>
so, now I'm trying to save my ltsp install as being "unreliable" and generally "slower" than disk-based stations.
22:03
That's fine, but can anyone comment on my setup? See if I'm going wrong somewhere?
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22:04
<nutron>
Octo-core xeon, 24G ram, 32G swap running Lenny.
22:04
NFS mounted home directories to the equivalent machine on the other end of the wire.
22:05
I have a secondary app server that I'm in the midst of setting up, but is my setup bad? Should we experience lag while using thunderbird (icedove)? hmm, I don't know what else to tell you.
22:05
Maybe my expecations were too high?
22:06
Oh, the thin clients all have 512mb athlon xp 2500 or better motherboards.
22:06
Network is 100mbit uplink for each station, then each switch (24 port) uplinks via a 4 gb lag connection to the upstream switch, which then links to the app server with a 4 gb bond connection again.
22:07
After watching the traffic, people can even watch video on the 100mbit connections. The switches seem to be able to handle it.
22:08
Overall, the system feels lagged, well really only when starting to type.. then it looks like it catches up.
22:09
Seems that really the only real culprit is icedove (thunderbird)... so I don't really know what I'm asking. Do others have these experiences? or is it just me?
22:09
oh yeah 25 concurrent users at one time.
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22:27
<nutron>
sorry about the rambles
22:27
:P
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<alkisg>
nutron: if it's only on icedove, you could try running it as a localapp
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