IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 11 March 2014 (all times are UTC)
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| 10:01 | <ramshank> morning all, going to try LTSP on Ubuntu today
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| 10:03 | <Hyperbyte> Morning, good luck. :)
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| 10:27 | <ramshank> thanks Hyperbyte
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| 10:43 | <tboss> what is the arch option that has to be passed on to ltsp-build-client for a transmeta crusoe processor?
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| 10:45 | my ltsp server is on Ubuntu Raring Ringtail
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| 10:55 | <ramshank> hi all, i have mt Ubuntu LTSP server up & running however my clients are stuck at the Ubuntu logo ???
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| 10:55 | any ideas ???
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| 11:22 | <ramshank> ???????????
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| 11:24 | <Hyperbyte> ramshank, have some patience. :)
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| 11:25 | !ask
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| 11:25 | <ltsp> ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
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| 11:25 | <Hyperbyte> Most of us are at work.
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| 11:25 | Do this:
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| 11:25 | !quiet-splash
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| 11:25 | <ltsp> quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and remove quiet splash plymouth:force-splash vt.handoff=7
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| 11:26 | <Hyperbyte> Should give you some textual errors, or at the very least you'll be able to see the last thing it did before it stopped.
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| 11:26 | <ramshank> have done that I - the error O am reciving is to do with DHCP and no drivers...
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| 11:26 | cant see the error properly as screen is flashing!!
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| 11:27 | <Hyperbyte> Sounds like it's failing to start X.
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| 11:27 | !screen_02
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| 11:27 | <ltsp> screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
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| 11:27 | <Hyperbyte> Do that, expect use SCREEN_07. Should prevent the client from starting X automatically and should give you a root prompt.
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| 11:27 | Then you can start X manually (startx) and see why it crashes.
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| 11:27 | <ramshank> tried all the buttons on my keyboard apart from ESC nothing works
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| 11:28 | might just try fedora 17
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| 11:28 | hey I am at work too,
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| 11:30 | <Hyperbyte> Ugh.
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| 11:30 | <ogra_> heh
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| 11:31 | <Hyperbyte> Why the heck do people come in here if they don't want to listen?
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| 11:32 | And why do people think installing a completely different OS is a "solution"?
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| 11:32 | If you come to that conclusion, you haven't put much though into choosing a distro....
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| 11:32 | *thought
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| 11:32 | ...
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| 11:33 | * Hyperbyte roars! | |
| 11:33 | <Hyperbyte> Okay, I got it out my system now. :P
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| 14:13 | <pycoderf> hi all. has anyone gotten cinnamon to work on ubuntu 13.10?
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| 14:18 | <sbalneav> Morning all
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| 14:22 | <pycoderf> morning
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| 15:24 | <pycoderf> anyone alive here?
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| 15:47 | <sbalneav> pycoderf: Define "alive"? :D
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| 15:48 | <pycoderf> sbalneav: good question
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| 15:50 | <pycoderf> is there a reliable way to log out idle clients?
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| 15:52 | <sbalneav> Are you running a fat client or thin client model?
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| 15:58 | <pycoderf> fat (all apps running on client machine)
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| 16:02 | <sbalneav> pycoderf:
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| 16:02 | http://freecode.com/projects/xautolock
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| 16:02 | Xautolock monitors console activity under the X window system, and fires up a program of your choice if nothing happens during a user configurable period of time.
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| 16:03 | <pycoderf> i think i just broke my server
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| 16:03 | <sbalneav> Stop doing that, then.
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| 16:03 | <pycoderf> have you gotten cinnamon to work at all? everytime i install it the DE locks up when i click menu
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| 16:04 | <sbalneav> Don't use cinnamon.
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| 16:04 | When I upgrade, I'm moving to Mate.
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| 16:05 | <FrozenZia> Hello all -- Got my ltsp-pnp server running Lubuntu 12.04 and client has internet access, things look good, but no flash.
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| 16:06 | Installed extras. Still no go.
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| 16:06 | Thought I'd go the chrome route, so installed that as well.
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| 16:07 | Chrome shows up in the client menu, but doesn't start. Working on figuring out why, but if someone has the quik answer, I'll take it.
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| 16:07 | TIA.
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| 16:09 | <pycoderf> so i installed mate and now i cnt apt-get anything not even update and when i boot my client mate-session is not found
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| 16:11 | <||cw> FrozenZia: which flash package did you install ?
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| 16:12 | <sbalneav> pycoderf: Sounds like you have some major problems.
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| 16:12 | <||cw> FrozenZia: also, fat client or thin?
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| 16:12 | <FrozenZia> ||cw: fat client, and uhhhhh, whatever flash gets installed with restricted extras...
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| 16:13 | <pycoderf> is there a way to prevent users from ssh to the server from command line?
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| 16:14 | <FrozenZia> ||cw: Oh yeah, and I guess the point in using Chrome was that it doesn't need (?) flash.
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| 16:15 | <||cw> FrozenZia: try specifying flashplugin-installer, incase the recommends isn't resolving right
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| 16:16 | if you can get chrome to start, load chrome://plugins and see what it says. might just be disbaled
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| 16:17 | <FrozenZia> flashplugin-installer is installed.
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| 16:17 | <sbalneav> pycoderf: Yes, check out the "AllowUsers" section in the sshd_config man page.
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| 16:18 | <pycoderf> but ssh is used to authenticate with ltsp
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| 16:18 | <sbalneav> Yes. Obviously you can't disallow the users who will use LTSP clients.
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| 16:19 | <FrozenZia> "which" doesn't find google-chrome on the client, but it seems to be there. Trying to start it I get an NaCl error...
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| 16:19 | <pycoderf> sbalneav: i just want them to not be able to ssh to the server and poke around once logged in. i guess i could remove terminal access
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| 16:20 | <sbalneav> pycoderf: Set their shell on the server to be "/bin/true", perhaps?
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| 16:20 | <FrozenZia> ||cw: Adobe Flash Player - Versio: 11.2 r202 is what server side Chrome tells me.
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| 16:20 | <sbalneav> Are you using ldap?
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| 16:20 | <pycoderf> no
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| 16:27 | <FrozenZia> "You need to configure your SUID sandbox correctly"
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| 16:32 | Ok, apparently my Chrome issue is related to this: https://code.google.com/p/chromium/issues/detail?id=318646
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| 16:34 | starting with --no-sandbox flag "works", with blank pages, same as others have experienced. Odd it works on the server just fine, but may have something to do with really old hardware on client.
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| 16:45 | <FrozenZia> Ok, for that matter flash in general is working on the server, just not on my client. 'Course it only has 512M ram, but thinking that *shouldn't* be an issue?
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| 16:51 | * FrozenZia must go now, though... Adieu! | |
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| 17:05 | <||cw> FrozenZia: I don't think I'd do a fat client with less than 1GB ram if general internet browsing is to be expected
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| 17:07 | <workingcats> agreed.. a "proper browser" like FF or chrome, especially when you add flash, will be very irritating at 512 RAM i think
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| 17:07 | as for your issue, maybe it's flash's hw acceleration?
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| 17:08 | since you mention really old hardware
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| 17:10 | <||cw> P4-2.4Ghz and better should do OK
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| 17:11 | typically
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| 17:44 | <alkisg> FrozenZia: clients with AMD CPU don't support SSE2 optimization so you need an older flash package for them, ping me to give you a URL if that's your issue.
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| 17:44 | grep sse2 /proc/cpuinfo on the client to be sure.
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| 17:45 | !flash-no-sse2
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| 17:45 | <ltsp> flash-no-sse2: The latest flash plugin is compiled with SSE2 instructions and thus segfaults on older CPUs. A workaround for LTSP fat clients/localapps is available in http://ts.sch.gr/repo/pool/main/f/flashplugin-no-sse2/flashplugin-no-sse2_11.1.102.63-2_i386.deb (to be installed in i386 chroots).
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| 18:16 | <gbaman> any suggestions for a way to blank a computers screen?
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| 18:19 | <effenberg> clear?
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| 18:20 | <gbaman> na, for a classroom
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| 18:20 | need a way to black students screens
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| 18:26 | actually, ignore that, epoptes have a nice way of doing it
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| 19:47 | <gbaman> alksig, is this correct, for the part of epoptes that runs in the students computer, it is just a bash script that runs python files?
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| 19:53 | <Hyperbyte> alkisg is in high demand today. Can you pick a number please?
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| 19:53 | <gbaman> :)
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| 19:54 | <alkisg> Haha
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| 19:54 | <Hyperbyte> I need alkisg as well and I have number 37.
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| 19:54 | <alkisg> gbaman: yes, to save memory, that way it only needs 1 mb ram
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| 19:54 | * gbaman concludes we need to clone alkisg | |
| 19:54 | <Hyperbyte> If that were possible! We'd be at LTSP version 12.7 right now.
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| 19:54 | * alkisg2 waves | |
| 19:55 | Hyperbyte is now known as alkisg3 | |
| 19:55 | <alkisg3> Hi!
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| 19:55 | <alkisg> :D
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| 19:55 | <alkisg3> So alkis
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| 19:55 | <gbaman> am trying to implement the lock screen code into my pi management software and stumped how to control it...
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| 19:55 | <alkisg3> I have some concept which I need to bounce off of you.
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| 19:55 | Not sure what would be the best way to go....
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| 19:55 | <gbaman> as I cant kill it!
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| 19:55 | <alkisg> It feels weird talking to myself though... :D
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| 19:56 | <alkisg3> Hahaha
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| 19:56 | alkisg3 is now known as Hyperbyte | |
| 19:56 | <Hyperbyte> Ok ok . ;-)
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| 19:56 | I'm creating what's known here internally as a "fallback thin client server"
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| 19:56 | <Hyperbyte> I have one, big, awesome hardware platform here... with specs that will make you drool your tongue out.
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| 19:56 | <gbaman> wake me up when you fix Hyperbyte's issue alkisg :)
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| 19:56 | <Hyperbyte> But - it's just one platform.
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| 19:57 | So technically (although highly unlikely) the hardware can break.
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| 19:57 | Since everything here is thin client, it would suck if it went down, because then absolutely nothing whatsoever works.
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| 19:57 | <alkisg> raid disk + a second server
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| 19:58 | You change the disks and it's up and working in a couple of minutes...
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| 19:58 | <Hyperbyte> Of course it's raid'ed... it's got six disks in there, 15k RPM
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| 19:58 | And it's redundant power supply, hot swappable disks, fans, psus, everything...
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| 19:58 | But still something could happen so it's down. Capacitor on motherboard could blow - whatever.
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| 19:59 | So, I have a second server.
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| 19:59 | This server basically starts handing out dhcp leases as soon as it determines the master dhcp server is offline.
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| 19:59 | <alkisg> Waaait no disk swapping?
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| 19:59 | <Hyperbyte> That all goes well... so when the master server is down, all clients are redirected to a different (fallback) LTSP server. Fantastics....
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| 19:59 | <alkisg> Or are the disks in a NAS?
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| 19:59 | <Hyperbyte> alkisg, I mentioned the disk swapping. ^^
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| 20:00 | <alkisg> (09:59:19 μμ) Hyperbyte: This server basically starts handing out dhcp leases as soon as it determines the master dhcp server is offline.
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| 20:00 | ...
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| 20:00 | <Hyperbyte> alkisg, yes?
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| 20:00 | <alkisg> if you swap disks, you've got the main dhcp server back online
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| 20:00 | <Hyperbyte> Oh, swap out entire disks - no, because I can't afford a server with same specs.
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| 20:00 | <alkisg> No need to separate "master" and "slave" dhcp server
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| 20:01 | So how are you going to handle the data syncing?
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| 20:01 | <Hyperbyte> Plus let's say I need to reboot the master server, I just like to log onto the second one to actually surf the web or whatever....
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| 20:01 | I'm not.
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| 20:01 | <alkisg> ...I don't know that plan doesn't sound good to me
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| 20:02 | <Hyperbyte> It's a good plan, trust me.
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| 20:02 | <alkisg> I'd go for 2 simple sata disks on a simple server, and just swap the disks to another one
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| 20:02 | Whatever breaks, I can resume in a couple of minutes
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| 20:02 | <Hyperbyte> No.
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| 20:02 | <alkisg> And it would cost 700€ for both servers and disks...
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| 20:03 | <Hyperbyte> This is a server with SAS disks, two eight core Opteron CPU's, 64 GB memory... and it's under pretty heavy load already.
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| 20:03 | <alkisg> Because you have thin clients, I would use fat clients
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| 20:03 | <Hyperbyte> I can't just put the disks in some random server and continue happily.
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| 20:03 | So - I create a fallback server. Which is fine, because our CRM has a backup running off-site, so does most other things we have.
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| 20:03 | But here's my issue.
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| 20:04 | <alkisg> OK so your fallback server doesn't have the same data as the master one, and doesn't need syncing, right?
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| 20:04 | <Hyperbyte> Right.
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| 20:04 | Because my data is already synced off-site.
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| 20:04 | Basically I want my fallback server to pull everything off-site. Will be slow, but it will also be independant and won't require -any- interference from me.
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| 20:04 | The last part is very important to me.
| |
| 20:05 | But here's my issue, right.
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| 20:05 | My user accounts are stored in LDAP, on the master server.
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| 20:05 | Now I could setup synchronisation... but that would mean the servers are still intertwined, I would rather not have that.
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| 20:05 | <slackish_> How often are users created?
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| 20:06 | <Hyperbyte> Often enough so that I don't want to do it manually.
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| 20:06 | I was actually thinking... would it be possible to create one user account, and have all clients auto-login to it?
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| 20:06 | Would probably require fat clients, which is actually doable. Would it be possible to do that?
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| 20:06 | <slackish_> i'd just cron a backup/copy script
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| 20:07 | * alkisg didn't quite get the issue, doesn't LDAP support fallback servers with autosyncing etc? | |
| 20:07 | <Hyperbyte> alkisg, yeah... I'd prefer to keep this real simple though.
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| 20:08 | <Hyperbyte> As little configuration/services/dependancies as possible.
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| 20:08 | <alkisg> So, if I understand correctly, we can completely ignore whatever you said about your master server,
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| 20:08 | <Hyperbyte> Would it be possible to have one user account, for all fat clients?
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| 20:08 | alkisg, yes, I was just telling a story really. :P It paints the picture. :P
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| 20:08 | <alkisg> and summarize this in: "I have a server and I want fat clients with a single user plus autologin. No LDAP, nothing complicated"
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| 20:09 | Why have one user, instead of one user per client?
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| 20:09 | <Hyperbyte> Would require me to keep client config up to date.
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| 20:09 | I want to install this once and never ever look at it again. It's supposed to be the fallback, it should -always- work if the main server doesn't, regardless. Which means I don't want to tie it into users, clients...
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| 20:10 | <alkisg> ...how long does it take you to create an lts.conf with a few mac addresses?
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| 20:10 | <Hyperbyte> Not the point... :)
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| 20:10 | <alkisg> But ok you can create a script that creates autologin users based on the client mac address
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| 20:10 | This works for thins and fats...
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| 20:11 | Now if you really want to use one user for many clients, you should ask all the floss developers if their program works that way, I can't answer that
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| 20:11 | <Hyperbyte> Oh wow. Clever. How would that work?
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| 20:12 | alkisg, I was actually thinking, if I use fat clients, I can just mount the homedir as tmpfs and rsync from the skeleton. Then all software should work I think?
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| 20:12 | <alkisg> Hyperbyte: you don't need users to save stuff?
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| 20:12 | (permanently)
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| 20:12 | <Hyperbyte> alkisg, no.
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| 20:13 | <alkisg> Ah, ok, that's really easy then
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| 20:13 | <Hyperbyte> It's strictly fallback. Web apps, that's it.
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| 20:13 | <alkisg> Just run nbd-client -N swap /dev/nbd2 to get some space for home
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| 20:13 | mkfs ext4 etc,
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| 20:13 | mount it to /home/user, and erase everything on login
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| 20:14 | You can do all that with plain RCFILE_xx commands
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| 20:15 | <Hyperbyte> Right... so this'll work!
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| 20:15 | That's good.
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| 20:15 | Then I have a really simple solution to provide everyone some desktops at least if my main server should ever fail.
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| 20:16 | <alkisg> Actually I'd write that as a screen script and submit it for upstream ltsp...
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| 20:16 | SCREEN_07=guest_session
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| 20:17 | <Hyperbyte> That's actually a good idea.
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| 20:17 | So when will you have this ready? ;-)
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| 20:17 | Kidding, kidding... hah hah hhaaaaha.
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| 20:17 | <alkisg> Haha, another thing for crowd-funding...
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| 20:17 | We should try that sometime, there are some services for that for floss programs
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| 20:18 | <Hyperbyte> Yeah, 0 A.D. is registered with SPI... software in public interest... they manage funds/donations, etc...
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| 20:18 | We recently got $33k from an IndieGogo campaign.
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| 20:19 | Of course 0 A.D. is a bit different project than LTSP, but hey, I'd ask my boss to throw some money LTSP's way if there was a good crowdfunding campaign.
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| 20:20 | <Hyperbyte> Problem is for that you need good organisation though. And you need a linear path of development with clear goals. LTSP has neither, if I may be so bold.
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| 20:20 | <alkisg> I was thinking about little bits, not a big campaign...
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| 20:20 | E.g. "100€ for guest sessions"
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| 20:20 | "300€ for samba authentication"
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| 20:20 | etc
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| 20:21 | <Hyperbyte> How about I fix the boat and you come here for vacation in return for coding the guest sessions? :P
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| 20:21 | Hehe
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| 20:21 | That's a joke again though - I wanna try the guest session thing myself first really.
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| 20:21 | <alkisg> Haha, I'll hold you on that (if I'm saying that right)
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| 20:21 | <Hyperbyte> Nice project.
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| 20:21 | Although the boat invite is open!
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| 20:21 | *to that.
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| 20:21 | :)
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| 20:21 | <alkisg> :)
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| 20:21 | <Hyperbyte> But "holding someone to something" is only when they make you a promise
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| 20:21 | <alkisg> Ping me if you need troubleshooting
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| 20:21 | <gbaman> :)
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| 20:22 | <Hyperbyte> You mean "I'll take you up on that" :-)
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| 20:22 | <alkisg> Ah, I thought it was also used for invitations
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| 20:22 | Ty for the lesson :)
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| 20:22 | <Hyperbyte> No, you hold someone to a promise and take someone up on their invitation. ;-)
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| 20:22 | <alkisg> Gotcha
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| 20:22 | <Hyperbyte> Don't ask me why though, I haven't made it up.
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| 20:23 | <gbaman> sorted Hyperbyte?
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| 20:23 | <alkisg> Haha, sure
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| 20:23 | He got a nice project out of it
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| 20:23 | <gbaman> :0
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| 20:23 | <gbaman> :)
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| 20:24 | ok, my question :)
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| 20:24 | i know nothing about gtk
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| 20:25 | Suggest for a way to kill the lockscreen?
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| 20:25 | I have it inserted in my code
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| 20:25 | (with reference to where it came from :) )
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| 20:26 | <alkisg> http://bazaar.launchpad.net/~epoptes/epoptes/trunk/view/head:/data/client-functions
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| 20:26 | Functions lock_screen and unlock_screen
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| 20:27 | You just keep the pid and use it to kill the app... no gtk involved
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| 20:27 | <gbaman> it is running from inside the python file though..
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| 20:27 | it is inside my python file
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| 20:27 | <alkisg> Do the same in python as you see in shell there
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| 20:27 | <gbaman> hmm
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| 20:27 | so you are suggesting running it outside of my python program?
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| 20:28 | was trying to keep it 1 file though
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| 20:28 | <alkisg> I don't know what your python program does
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| 20:28 | <gbaman> similar to epoptes, but simpler
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| 20:28 | <alkisg> If you want to include it to the same file, ask Phantomas, he's our python coder...
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| 20:29 | <gbaman> could get it to wget the files...
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| 20:29 | is a messy solution, but might work
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| 20:30 | <alkisg> If you're going to create files, you can just write them (like cat <<EOF in bash), no need for wget...
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| 20:30 | <gbaman> not a bad idea alkisg..
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| 20:30 | <alkisg> But packages are way better than standalone shell scripts
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| 20:30 | Standalone shell scripts are for windows developers... :)
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| 20:30 | <gbaman> hmm, actually..
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| 20:31 | the main program is running in another thread, wonder if I could call lockscreen.unlock from that other thread...
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| 21:07 | <effenberg> am i able to set client language via lts.conf?
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| 21:20 | <||cw> effenberg: if not built in (locale?) then via rc_scripts for sure
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| 21:31 | <effenberg> i was shooting for something like "LDM_CLIENT_LANGUAGE=bayrisch"
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| 21:31 | <effenberg> ;-)
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| 21:43 | <effenberg> and we have a winner: LDM_LANGUAGE = $var
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| 21:49 | <vagrantc> effenberg: how'd you find it? it's in the lts.conf manpage, at least :)
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| 21:58 | <effenberg> man lts.conf
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| 21:58 | No manual entry for lts.conf
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| 21:58 | http://manpages.ubuntu.com/manpages/precise/man5/lts.conf.5.html
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| 21:59 | <vagrantc> apt-get install ltsp-docs
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| 21:59 | <effenberg> kk
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