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


Channel log from 6 July 2008   (all times are UTC)

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01:38
<Metatron1>
im having difficulty with ltsp-build-client in ubuntu, i use mirror command to point to iso of 8.04 cd, but it fails to fetc with Package.gz in restricted directory, does so with extramirror set to standard repo, anyone seen this? the Package.gz does exsist in the folder
01:38
fetch not fetc
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03:23
<LastLemming>
erstazi: hardy distro
03:23
hi
03:23
any one around?
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03:44
<Q-FUNK>
?
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03:49
<Metatron_>
m having problems with ltsp-bild-client im on dial up and want to use ubunto iso as mirror it is mounted correctly but --mirror option to iso complains about not able to fetch Packages.gz for restircted folder, i use --extramirror to standard ubuntu repo and it cant fetch either, anyone seen this?
03:53
<Q-FUNK>
hmm.. nope
03:54
<LastLemming>
I don't know how to use mirror
03:54
Q-FUNK: do you use ldm?
03:54
<Q-FUNK>
but here I just make it copy a whole sources.list that uses a local mirror for everything, from the server's own sources.list
03:54
yes
03:54
<LastLemming>
can you test something?
03:55
<Q-FUNK>
no, since I'm away from my LTSP setup, right now
03:55
<LastLemming>
if you select another language
03:55
look like it's buggy? I select other language and nothing happended
03:55
<Metatron_>
copying the sources.list would work i imagine for updating the client but i cant get it to build in first place, the build script gets most of the stuff it needs from the local cd mirror but just hangs at the restricted part
03:56
<Q-FUNK>
to build it
03:56
<Metatron_>
some bit of knowledge out there i need, it must be someplace :)
03:56
<Q-FUNK>
http://q-funk.blogspot.com/2008/06/howto-build-clean-ltsp-boot-image-that.html
03:56
<LastLemming>
my keyboard it's azerty, even with US languages I'm still with azerty
03:57
<Q-FUNK>
tiens, un consomateur azerty
03:58
<LastLemming>
salut Q-FUNK
03:58
<Metatron_>
ah havent tried that will give it a whirl, maybe the ting about unsigned packages is the problem
03:59
<LastLemming>
Q-FUNK: the ldm texts are in english I want to get french ldm texts instaed of "username", "password"
04:00
<Metatron_>
Q-FUNK: my browser is trunkating the command all i see is ltsp-build-client --copy-sourceslist --accep another browser shows tsp-build-client --copy-sourceslist --accept-unsigned-pa is that the whole command
04:02
<Q-FUNK>
LastLemming: it should be possible, if your server is configured to use french. IIRC ltsp-build-client inherits the system locale of the server
04:04
<LastLemming>
after login, it's in french
04:04
it's ubuntu hardy in french
04:04
<Q-FUNK>
right, because login uses gnome-session to set the locale
04:05
<LastLemming>
gdm is in french on the server
04:05
only ldm is with english text and azerty
04:05
azerty it's ok :)
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06:50
<aidy>
hi
06:52
is there a way i can get mpd to work? I'm running it with pulseaudio on the server
06:53
and other pulseaudio apps work fine, but mpd doesn't want to play
06:53
(on the clients that is)
06:56
ah pulseaudio wasn't accepting network access it seems
06:56
works now :)
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07:07
<ogra>
aidy, ldm should set that up for you actually
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07:30
<aidy>
also, is X forwarding working through ssh on a standard ltsp client/server setup?
07:31
because in my case that'd just be a waste of processing power
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07:54
<ogra>
aidy, its the default, you can drop X compression from ldm by using LDM_DIRECTX in an lts.conf file you create
07:55
that will still keep the password handling in ssh during login (unlike XDMCP where you can keylog and do screenshots of the network traffic)
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07:55
<ogra>
note that all features developed in ltsp5 rely on ldm ... you need it if you want ful functionallity
07:55
<aidy>
ogra: i want pure xdmcp
07:56
<ogra>
well, then you are on your own with implementing localdev and sound support
07:56
we dont use/support xdmcp since 3 years anymore
07:56
<aidy>
ogra: aha
08:00
<ogra>
ldm with the directx option is similary fast and keeps your passwords safe
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08:07
<Metatron>
ive been trying for two weeks to use build client offline atm it seems to be building. the only difference was i used an actual CD in the CD drive rather than mount and point to an iso with --mirror, anyone know why that would mater? some security thing maybe?
08:10* ogra always does: mount /cdrom && sudo ltsp-build-client --mirror file:///cdrom
08:11
<ogra>
(same thing the CD ltsp builder does in ubuntu if you install it in LTSP mode)
08:11
<jammcq>
g'morning ogra
08:11
<ogra>
hey hey
08:11
<jammcq>
I saw the announcement for UDS in december
08:12
seems like it's very late in the fall, compared to previous years
08:12
<ogra>
oh ?
08:12
i didnt see that yet
08:12
i just know its at google again
08:12
<jammcq>
yeah
08:12
<ogra>
(or likely to be)
08:12
<laga>
oh? at google hq or just in the same town?
08:12
are they sponsoring?
08:12
<jammcq>
at google hq
08:13
http://www.jonobacon.org/?p=1212
08:14
ogra: it means that UDS won't be interfering with BTS :)
08:14
<Metatron>
whats the difference in the CD mounted in the drive and an .iso mounted in a directory? im just curious, some checksum going on?
08:15
<ogra>
Metatron, not at all, no
08:15
it should just work, i used it like that before
08:16
jammcq, yeah
08:16
jammcq, any plans for BTS yet ?
08:16
<stgraber>
oh, UDS at
08:16
Mountain View, interesting
08:16
<jammcq>
ogra: just starting to think about it.
08:16
<stgraber>
(and broken keyboard ...)
08:18
<aidy>
ogra: directx?
08:18
as in directx from ms windows?
08:18
<ogra>
aidy, LDM_DIRECTX
08:19
<stgraber>
aidy: nah, directX as uncompressed,uncrypted X11 stream
08:19
<aidy>
ah :D okay
08:19
<ogra>
its a variable you can set in an lts.conf you can create, that will use a direct connection for the X traffic while keeping the other features that rely on the ssh tunel for commincation intact
08:19
<aidy>
ah nice
08:20
also, how slow is using a full ubuntu-desktop client over pxe going to be?
08:20
<ogra>
??
08:21
PXE is a network boot protocol ... it only transports kernels usually
08:21
<aidy>
ah
08:22
okay so what the client works on is contained in a squashfs image right?
08:23
<stgraber>
yes
08:24
<ogra>
right, thats X, ldm, and the bits and pieces to have localdevices and networked sound on the client
08:24
<aidy>
and that is mounted on the server and then accessed by the client over nfs?
08:24
<ogra>
nbd
08:24
(in ubuntu though, fedora and debian dont use compressed images or nbd here)
08:25
<stgraber>
aidy: no, it's exported using nbd and then mounted as a block device on the client
08:25* aidy reads up on nbd
08:25
<stgraber>
aidy: so the client uses /dev/nbd0 as an harddisk that's connected to the server on port 2000 (default)
08:25
<aidy>
i see
08:26
<ogra>
https://help.ubuntu.com/community/UbuntuLTSP/LTSPWithoutNFS
08:26
<aidy>
so i could just as well use nfs but that'd be a bit slower
08:26
but i would have write access
08:27
<ogra>
no
08:27
the nbd image has full write access ...
08:27
nfs only sets certain files and dirs writable
08:27
<aidy>
but it doesn't get saved i mean
08:27
<ogra>
nothing gets saved in either setup
08:27
you have to do the changes in the chroot
08:28
wht runs on the client always uses a tmpfs for the writable bit
08:28
in case of nbd you have a fully writable rootfs while in nfs only some places are actually writable at all
08:29
<aidy>
i know, but i could technically use a writeable nfs as root...
08:29
i don't see why that wouldn't be possible
08:30
<Metatron>
ok it got most of its stuff off the CD but wants to dl 66 megs of stuff online, i ready wanted to avoid this, most likely ill drop offline on dial up before its done, is there no way to get it to build 99% offline
08:30
<ogra>
sure you could, but would need to change some bits in initramfs i bet
08:30
and note that nfs is *really* slow compared to nbd
08:31
Metatron, well, as i said, i do it 100% offline by just mounting the iso under /cdrom and using --mirror file:///cdrom
08:32
<Metatron>
i used that exact command it got to I: Base system installed successfully. then the dl's started
08:32
<ogra>
Metatron, whats the exact set of options you use ?
08:32
and what CD do you use exactly
08:32
<Metatron>
think maybe they are security patches
08:32
<ogra>
right
08:33
you can use --security-mirror none
08:33
<Metatron>
[Ubuntu 8.04 _Hardy Heron_ - Release i386 (20080422.2)]
08:33
ahh
08:33
<ogra>
that will avoid pulling security fixes
08:33
<Metatron>
knowledge is power thanx
08:33
<ogra>
is that the alternate CD ?
08:33
<Metatron>
yes alt
08:33
<ogra>
note the desktop CD wont have the packages you need
08:33
ok
08:34
<stgraber>
you should use 8.04.1
08:34
<ogra>
right
08:34
.1 has the openssh fixes you will need to have in any case anyway
08:34
<Metatron>
do the security updates go into apt's cache? i a have an iso made from aptoncd, could i use it to update offline, and i didnt know there was an 8.04.1
08:34
<ogra>
and some other ltsp related fixes as well
08:35
<Metatron>
this system is updated fully, just getting those updates into the client build is what im unsure about
08:35
<ogra>
yes, they go into the same download dir ... but the fixes i talked about are in hardy-updates not -security
08:36
<aidy>
ogra: okay thanks :)
08:36
<ogra>
i think vagrant added a debian plugin for preserving whats in /var/cache/apt
08:36
not sure i linked tht in ubuntu
08:36
<aidy>
ogra: it's not like i really need it
08:36
<Metatron>
im just wanting it to boot, not too concerned about updates right now, if i implement this ill have broadband at site
08:36* ogra goes looking
08:37
<ogra>
try --keep-packages
08:37
that should use the servers /var/cache/apt dir
08:37
<Metatron>
ok, its still bulding, giving lots of errors
08:37
<ogra>
(--extra-help might be a good thing to read ;) )
08:38
of its moaning about missing pty's thas normal and wont do any harm
08:38
same for font stuff, they are just warnings
08:38
<Metatron>
but this is a far as its gotten, its working in /var/lib/ftfpboot now, so maybe ill have something i can work with
08:39
<ogra>
if you get the success message at the end at least :)
08:39
<aidy>
ogra: for LDM_DIRECTX i just need to put LDM_DIRECTX=true in /var/lib/tftpboot/ltsp/i386/lts.conf right?
08:39
<ogra>
in the [default] section, right
08:39
<Metatron>
thanks for the tips on no security and keep pacakges
08:39
<ogra>
[default]
08:39
LDM_DIRECTX=true
08:39
like that
08:40
<aidy>
ogra: okay thanks :)
08:40
<ogra>
sound and local devcies should work out of the box then ... if you didnt break it before with fiddling with the settings ;)
08:41* ogra goes back to play with https://launchpad.net/usb-imagewriter
08:42
<Metatron>
info: LTSP client installation completed successfully
08:42
now to see if i can boot from it hehe
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08:44
<ogra>
you should :)
08:45
<Metatron>
netstat -nulp | grep atftp returns nothing, problem?
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08:45
<vpxavier>
hello every1, I'm very new to LSTP... and can't find answers to questions I have posted on ubuntu forums. Could any1 help me?
08:45
<jammcq>
Metatron: try: netstat -anp | grep ":69 "
08:45
you won't see atftp, if you start it from inetd
08:46
<Metatron>
ok that shows something, im a little iffy and all the services needed to be up still
08:48
<vpxavier>
nobody?
08:49
<laga>
vpxavier: you forgot to ask a question
08:49
<vpxavier>
I didn't want to bother every one :D
08:50
my questions are the following, thanks:
08:51
1) is it possible to install only some applications on the thin clients and manage which thin clients are allowed to run each application?
08:51
2) is it possible to have an auto login based on the mac address
08:51
<stgraber>
1) no
08:52
2) you mean having the mac address as username for autologin ?
08:52
<vpxavier>
3) is it possible to have firefox launched at startup, after the autologin, with a different homepage for each thin client?
08:52
<stgraber>
3) that's something you'll do in a gnome startup script so not related to LTSP but yes it's possible
08:53
<vpxavier>
2) I mean a different user by thin client, the goal is to have some kind of web browser devices with a different home page per device
08:54
<stgraber>
I never used autologin but IIRC you should be able to set a different login/pass for autologin for each thin clients using lts.conf
08:54
but you'll need to create the users and populate lts.conf by hand with all your clients
08:56
<vpxavier>
1) this means that if I installed a software, all clients will have access to it, not possible to manage this with user rights?
08:57
<stgraber>
that's something that would have to be implemented in gnome, maybe you can do that using sabayon/lockdown but that'll take a long time and won't be dynamic (you won't be able to say network range x to y get that application list)
08:58
<vpxavier>
I will explain what I want to do, this will be easier for you to tell me If this is possible with LTSP:
08:59
I have a server on which I installed a LAMP and asterisk (telephony). I would like it to be a terminal server for wall mounted touch screens that should launch firefox automatically with a different home page for each device.
09:01
This is the most important goal for me. After this, I would like to add some apps but not for all thin clients
09:01
Is LTSP the right solution?
09:01
<stgraber>
LTSP in kiosk mode may be better in your case
09:02
that way firefox will run locally on the clients and won't require a gnome session to open on the server
09:02
<vpxavier>
I tried and this is very close indeed, but I could not manage a different home page by device
09:02
<aidy>
can i verify somehow that direct xdmcp is working?
09:03
<stgraber>
then I'd just point all of them to a single PHP page that'll just check REMOTE_ADDR and do a header("Location: http://page"); depending on the IP
09:04
you may need to asign the IP addresses using the MAC addresses in dhcpd.conf for this to work
09:04
<vpxavier>
this could be a idea, right... but It would require a lot of change in my web app... not possible to do it without changing my php app?
09:07
<stgraber>
you may want to have a look at the kiosk part, maybe you can do the test on the thin client itself
09:07
I never used kiosk so I won't be of much help here
09:08
<vpxavier>
Kiosk is very close... it is light and the thin clients aren't allowed to do anything else than web browsing ,and with autologin, that's what I'm looking for, I just have to find something for the homepages...
09:08
Thank you very much for your time and answers stgraber
09:09
It confirms me that I don't have to spend time on the standard LTSP config and to test kiosk mode a little more
09:10
I thought that a lot of people would have asked this already in the past
09:10
<Metatron>
its 10:08 am ive not been to bed, pxe must not be supported by the ethernet card in trying, can somone tell me what i switch around to try etherboot...is it just change the pointer to pxelinux.0 in dhcp and dnsmasq to something else? what is that something else?
09:10
<vpxavier>
it is a common use of wall mounted computers in companies
09:11
<aidy>
wat would be the easiest way to watch a dvd on a client? (things like framebuffer mplayer are okay for me)
09:11
<stgraber>
people often ask about kiosk mode but not with the need of different homepage (or they already dealt with that by themselves)
09:11
<laga>
Metatron: etherboot is a pxe stack for your network card. you put it on a floppy or something and then boot your client from that floppy
09:12
<Metatron>
ah now i remember reading that , lackosleep is getting to me
09:12
ok ill go look for a boot image
09:12
dont have a floppy though, have to get it on a partition or cd
09:12
<vpxavier>
I wanted to be sure it wasnt just a setting I can't find. Thanks a lot
09:13
<stgraber>
look for gPXE
09:13
you can then get an ISO image that'll let you PXE boot
09:14
<vpxavier>
one more: how to set the default home page for all thin clients in firefox?
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09:14
<Metatron>
i thought id read about some of this prebuilt into ubuntu, ill look again
09:23
ok maybe its not pxe if i try to get prelinux.0 in an atftp session i get file not found, what didnt get put in the right place
09:25
<stgraber>
that's /ltsp/i386/pxelinux.0 not /prelinux.0
09:27
<Metatron>
sorry it was echo 'get pxelinux.0' | atftp winky2 something about my path is wrong does dhcpd.conf set that path?
09:28
<laga>
huh
09:28
<Metatron>
echo 'get pxelinux.0' | atftp SERVERIP
09:28
give me file not found
09:29
<aidy>
my thin client complains about module-x11-xsmp.so not being found
09:29
<Metatron>
i should go to bed and try later
09:34
/opt/ltsp/i386/pxelinux.0 does not exsist /opt/ltsp/i386/boot/pxelinux.0 does exists dhcp.conf references /ltsp/i386/pxelinux.0 should it instead point to /ltsp/i386/boot/pxelinux.0 is this why i cant enter an atftp session and get pxelinux.0 without file not found error
09:34* laga sends Metatron to bed
09:38
<Metatron>
ok when a client tries to boot it wants to load the pxelinux.0 file over the network, it does this via tftpd, when i log on manualy to this machine to be the server, and try to use atftp to download the file to text it says file not found, so thus the thin client is not gonna find it, its not there, pxelinux.0 exsists in the client build in the directory i gave before, where should it be for tftpd to find it
09:39
test not text
09:39
<laga>
the file lives in /var/lib/tftpboot/
09:39
and the tftpd is chrooted into /var/lib/tftpboot/ AFAIK
09:39
so /var/lib/tftpboot/ becomes /
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09:40
<Metatron>
thank you now i can go to bed lol
09:40
the file does exist there
09:40
though why file not found ill do after sleep
09:40
laterz
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10:36
<aidy>
do i need to rebuild the image after i change dhcp settings?
10:37
it now gets an ip in 192.168.1.* instead of 192.168.0.*
10:38
<ogra>
you need to update the sshkeys
10:38
sudo ltsp-update-sshkeys && sudo ltsp-update-image
10:39
<aidy>
update-sshkeys updates everything in /opt/ltsp right
10:39
because i have a few non functional builds there and it says WARNING: /opt/ltsp/fati386/etc/ssh not found. skipping...
10:40
<ogra>
you need to use the right switches for that non standard path, look at the --help output for the commnds
10:42
and in any case you indeed need etc/ssh in the chroot
10:43
(which should be there by default if you biult it with ltsp-build-client)(
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14:01
<aidy>
hi
14:01
i'm trying to get a local pulse client to run on a thin client
14:03
but it gives 'denied access to client with invalid authorization data'
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15:23
<LastLemming>
anyone already success to use thin client manager and x11vnc to display client screen?
15:29
<Q-FUNK>
LastLemming: there's a monitoring tool designed especially for that
15:29
<LastLemming>
oh
15:30
which one?
15:30
<Q-FUNK>
hm.. trying to remember
15:33
<aidy>
is it somewhow possible to record audio on a thin client?
15:33
*somehow
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15:36
<Nubae>
italc
15:37
al
15:37
<aidy>
?
15:37
<Nubae>
allows u to monitor thin client screens
15:37
<LastLemming>
yes
15:37
italc
15:37
lol I forget that too
15:38
<aidy>
and how does it help recording?
15:38
oh
15:38
eh nvm
15:38
<Nubae>
aidy: it is not
15:39
unless u put the mic on the server
15:39
local recording is not possible yet
15:39
<aidy>
the server doesn't have a soundcard
15:39
ok
15:39
then i could just close pulseaudio
15:39
but how does that work?
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15:41
<aidy>
oh but
15:41
i think it actually does work?
15:42
(im actually running this on the thin client itself not from the server
15:46
no it doesn't
15:46
but the input shows up in pulseaudio volume control
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15:57
<aidy>
how do i disable pulseaudio?
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21:29
<aidy>
http://omploader.org/vbDZ0 i'm trying to use the workstation plugin meant for ubuntu
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22:33
<Nuba1>
aidy: what seems to be the problem?
22:33
ltspfsmounter client - surely that should be ltsp-build-client
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