IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 5 September 2012 (all times are UTC)
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| 06:00 | <ltspuser_27> hi
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| 06:27 | <alkisg> Hello
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| 06:33 | <ltspuser_27> any one here
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| 06:33 | for help
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| 06:33 | :)
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| 06:34 | <muppis> !qwebirc | echo ltspuser_27
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| 06:34 | <ltsp> Error: "qwebirc" is not a valid command.
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| 06:34 | <muppis> Äh.
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| 06:49 | <elias_a> :P
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| 06:49 | "changing password..." :)
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| 07:20 | <Hyperbyte> ltspuser_27:
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| 07:20 | !ask
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| 07:20 | <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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| 07:30 | <Hyperbyte> Looks like we have quite a bit of new entries on the LTSP worldmap. :-)
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| 07:43 | <ltspuser_25> Hi all!
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| 07:44 | I've got a question about how localapps works, technically I mean. Couldn't find anything about
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| 07:45 | Is it right that the server is connecting to the thin client using ssh and Xforwarding? Or it's something completly different? Thanks for your help
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| 08:09 | <martin-fletcher> Hey all
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| 08:15 | <ltspuser_25> Hello
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| 08:24 | <martin-fletcher> looking to impliment an ltsp setup with 2 ltsp servers authenticating against a kerberos-openldap server with samba pdc
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| 08:25 | anyone have any suggestions?
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| 08:27 | <muppis> martin-fletcher, set up the kerberos-openldap working at servers locally and I think you're good to go with clients as well. So far I've made it work that way with basic ldap.
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| 08:27 | <martin-fletcher> muppis: thanks
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| 08:30 | <martin-fletcher> basically what i want is ltsp running for clients, authenticating against kerberos-openldap, mounted NAS directories (different for different users), Including a samba PDC, as there will be some windows clients on the setwork
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| 08:30 | <ltspuser_78> Hi. I've got an LTSP server running for 2 years, and this morning, when I tried to log in on a client, I only see the ubuntu logo (system start in progress), but never comes to ldm.
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| 08:30 | <martin-fletcher> i am a bit confused as to how to approach this kind of setup
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| 08:31 | <ltspuser_78> (setup : ltsp cluster, with 1 appserver, and a server for evcerything else (load balancing, nfs...)
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| 08:32 | <Hyperbyte> martin-fletcher, easy. LTSP uses SSH to authenticate to the server.
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| 08:32 | <martin-fletcher> ltspuser_78: I have heard of this issue before, looking at several forums, best solution is to rebuild your client
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| 08:32 | <Hyperbyte> martin-fletcher, whatever login method you choose, if it can work with SSH, it can work with LTSP. I have a 389 Directory Server (LDAP) running on my Fedora network server, then configured my Ubuntu thin client server as an LDAP client, and that's it.
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| 08:33 | ltspuser_78, there is probably an error message behind the Ubuntu screen. What you want to do is disable the Ubuntu screen, so you can see it. Then you tell us the error message and we can help you further. See:
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| 08:33 | !quiet-splash
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| 08:33 | <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 .
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| 08:33 | <martin-fletcher> right ok i see
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| 08:34 | what about the NAS/Samba?
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| 08:34 | <ltspuser_78> One moment, I try this...
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| 08:35 | <Hyperbyte> martin-fletcher, by default LTSP mounts home directories for the user from the server using sshfs. This only happens if /home/ is not already mounted by some other means. So you could configure the clients to mount the entire /home/ dir from NFS or CIFS or whatever method you need
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| 08:35 | martin-fletcher, aditionally if you're using thin clients, you could also mount /home/ on the server via whatever means you want, and then let the clients use their default sshfs implementation to get the home dir from server to client, but that will cause some overhead.
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| 08:36 | (this method would also work with fat clients by the way, not just thin)...
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| 08:37 | <Hyperbyte> Either way, what you are trying to do with LTSP isn't very uncommon and by no means difficult. Mind you though, I used to have a seperate NAS like you, but I've chosen to make the LTSP server the NAS, so thin clients have direct access to files without network overhead and bandwith limitations
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| 08:39 | <Hyperbyte> martin-fletcher, seems like you got disconnect. Check http://irclogs.ltsp.org/ if you've missed any of my messages.
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| 08:39 | <ltspuser_78> I removed quiet splash, and here is the messages I got : kernel panic - not syncing atempted..... and second line : PID:1, comm : init not Tainted 2.6.32-22-generic
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| 08:39 | <martin-fletcher> thanks
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| 08:41 | <martin-fletcher> i see what you mean
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| 08:42 | hyperbyte: so basically, i just mount all of the required directories onto the LTSP servers as the /home dir, then LTSP clients can have their directories mounted from their
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| 08:43 | <Hyperbyte> martin-fletcher, this is possible yes, but will cause overhead and delays. Depending on what kind of files people store in their /home/ dirs, it should work. I did it for a while, but also ran into problems where file locks weren't translated over so many mount iterations.
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| 08:44 | <martin-fletcher> right ok
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| 08:44 | <Hyperbyte> Either way, LTSP can easily be configured to mount the home dir from elsewhere. It's an lts.conf option.
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| 08:44 | NFS_HOME if memory serves.
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| 08:45 | <martin-fletcher> hyperbyte: ahh right i see
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| 08:45 | <Hyperbyte> ltspuser_78, just a guess here - try running:
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| 08:45 | !update-kernels
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| 08:45 | <ltsp> I do not know about 'update-kernels', but I do know about these similar topics: 'ltsp-update-kernels'
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| 08:45 | <Hyperbyte> !ltsp-update-kernels
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| 08:45 | <ltsp> ltsp-update-kernels: http://manpages.ubuntu.com/manpages/maverick/man8/ltsp-update-kernels.8.html
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| 08:45 | <Hyperbyte> Eh
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| 08:45 | <martin-fletcher> how would samba play a part in this?
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| 08:45 | <Hyperbyte> Disregard that
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| 08:45 | ltspuser_78, try running sudo ltsp-update-kernels sudo ltsp-update-image
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| 08:45 | <Hyperbyte> See what that does. I have no idea about the specific error message, but that might help.
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| 08:45 | martin-fletcher, what part would you like it to play?
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| 08:46 | <martin-fletcher> hyperbyte: i would like it as a PDC, as it will also be serving windows clients
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| 08:46 | <Hyperbyte> martin-fletcher, I've my LTSP server a PDC.
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| 08:46 | *made
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| 08:46 | I've chosen to put it all on one server, to eliminate overhead.
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| 08:47 | <martin-fletcher> how does samba work with ltsp clients?
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| 08:48 | <Hyperbyte> martin-fletcher, again - how would you like it to work with LTSP clients?
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| 08:48 | Samba is software that interfaces Linux with Windows. I'm not exactly sure what role you would like to play with your Linux LTSP clients.
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| 08:49 | <martin-fletcher> i would like the samba server to act as the PDC for the network, and so serving up domain access to the ltsp clients
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| 08:50 | <Hyperbyte> martin-fletcher, I still don't understand your question. What -exactly- are you trying to do?
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| 08:50 | <martin-fletcher> would like it to have printer shares, control nfs mounts etc, basically all that a windows dc does
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| 08:50 | <Hyperbyte> A PDC (Primary domain controller) is the computer that is the boss of a Windows domain. LTSP clients don't use Windows.
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| 08:50 | Right
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| 08:51 | So let's make one thing clear:
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| 08:51 | 10:47 <martin-fletcher> how does samba work with ltsp clients?
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| 08:51 | <martin-fletcher> i am looking to use samba to replace the current windows dc
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| 08:51 | <Hyperbyte> It doesn't. Samba and LTSP have nothing to do with eachother.
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| 08:51 | They both run on Linux, that's it.
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| 08:51 | Let's say you want one server, that is both a PDC for Windows' clients, sharing printers and files, and an LTSP server, giving access to those same printers and files, then yes - that's very much possible.
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| 08:52 | <martin-fletcher> yes that is exactly what i want
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| 08:52 | <Hyperbyte> But, try to keep things 'in scope'. This #ltsp channel is for help with the Linux terminal server and clients. I could help you set up an entire network server, but it's better if you search resources in the right places.
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| 08:53 | You can find a lot of great general help in #ubuntu, there's also tons of howto's about setting up a PDC on Ubuntu
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| 08:53 | <martin-fletcher> thanks alot, i will have a look at those aswell
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| 08:53 | <Hyperbyte> As far as this channel goes, it kinda stops at the point where thin clients and terminal servers aren't involved anymore. :)
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| 08:53 | <Hyperbyte> But I can tell you this:
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| 08:54 | I'd set up an LDAP server on Ubuntu, create user accounts there, and then a /data/ partition for all files. Then I'd install LTSP so all LDAP users can login and access their /data/, then I'd set up Samba to use LDAP for authentication, and share /data/ over the network
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| 08:55 | What you want is easily doable, basic Ubuntu stuff... trust me when I say the howto's are out there. Your best bet right now is to start Google'ing, and take in enough information so you feel "right, I can do this."
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| 08:55 | :)
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| 08:56 | For example: https://help.ubuntu.com/12.04/serverguide/samba-dc.html
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| 08:56 | Good luck, I have to get back to work. :)
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| 08:56 | Oh - and when you get LTSP working, be sure to add it to our world map! :-)
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| 08:56 | !worldmap
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| 08:56 | <ltsp> worldmap: If you're using LTSP, please let the world know and share your story at http://www.ltsp.org/stories/ Your can add a nice pin to our world map at your location, plus your setup will count towards the global LTSP usage statistics.
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| 08:57 | <martin-fletcher> thanks alot hyperbyte, i have been stuck with this for a long time, i have inherited a totally broken windows network, that is years out of date, and not maintained during its lifetime, and have been told that i will have no funding at all for improvements
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| 09:00 | <ltspuser_78> It seems my answer disappeared, so here it is once again : I removed quiet splash, and here is the messages I got : kernel panic - not syncing attempted..... and second line : PID:1, comm : init not Tainted 2.6.32-22-generic
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| 09:02 | <Hyperbyte> martin-fletcher, sounds like you need Linux. :)
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| 09:02 | <martin-fletcher> indeed :)
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| 09:02 | <ltspuser_78> (just before, I had : No interfaces found... aborting // mounting root filesystem // running /scripts/nfs-top
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| 09:03 | <Hyperbyte> ltspuser_78, I don't know the answer, but stick around - I'm sure someone else does.
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| 09:06 | <ltspuser_78> hyperbyte, ok, thanks.
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| 09:18 | <Hyperbyte> alkisg knows though. :)
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| 09:19 | <ltspuser_78> hyperbyte, but it seems alkisg is busy somewhere else... :)
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| 09:20 | <alkisg> Εν οÎŻδα, ĎŚτι ουδÎν οÎŻδα - Socrates :P
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| 09:21 | ltspuser_78: what's the question?
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| 09:24 | <ltspuser_78> alkisg : Hi. I've got an LTSP server running for 2 years, and this morning, when I tried to log in on a client, I only see the ubuntu logo (system start in progress), but never comes to ldm.
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| 09:24 | <alkisg> So it's running 10.04?
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| 09:24 | <ltspuser_78> I tried to reboot, update/upgrade chroot
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| 09:24 | Lucid
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| 09:25 | <ltspuser_78> Alkisg : I removed quiet splash, and here is the messages I got : kernel panic - not syncing attempted..... and second line : PID:1, comm : init not Tainted 2.6.32-22-generic
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| 09:26 | just before, I had : No interfaces found... aborting // mounting root filesystem // running /scripts/nfs-top
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| 09:26 | <alkisg> And that client used to work?
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| 09:27 | <ltspuser_78> Those clients used to work for 2 years, until July (last log on ltsp-control-center web interface)
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| 09:27 | <alkisg> And you get dropped to an initramfs prompt?
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| 09:28 | <ltspuser_78> Nothing, just ubuntu logo and white/red points under it "moving"
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| 09:29 | <alkisg> ltspuser_78: after you removed "quiet splash"
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| 09:29 | So there's no logo there, there's kernel panic, but after that, do you get a shell?
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| 09:30 | <ltspuser_78> Sorry, not after removing quiet splash, of course. I switch on servers and client again, and tell you
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| 09:32 | <ltspuser_78> No prompt at all, just call trace message, followed by some lines like syscall, sysinit...
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| 09:33 | <alkisg> OK, now in pxelinux.cfg/default put "break=mount" in the place where "quiet splash" used to be
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| 09:34 | <ltspuser_78> done...
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| 09:35 | <alkisg> Reboot the client, you should have a shell now
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| 09:35 | <ltspuser_78> I've got the shell
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| 09:35 | <alkisg> ipconfig eth0
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| 09:36 | <ltspuser_78> No such device :(
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| 09:37 | <alkisg> You're probably missing the module then
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| 09:37 | Which device is that?
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| 09:37 | !adding-modules
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| 09:37 | <ltsp> adding-modules: If your clients won't boot with messages like 'eth0: link not ready', maybe you're missing an initramfs-module: https://help.ubuntu.com/community/UbuntuLTSP/AddingModules
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| 09:39 | <ltspuser_78> But no change has been made neither on clients nor on servers since last succesful log !...
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| 09:39 | <alkisg> ltspuser_78: ls -lha /var/lib/tftpboot/ltsp/i386
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| 09:39 | Put the result to pastebin
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| 09:40 | I.e. if you had manually put the module there, and a package was updated and your manual configuration overwritten, you now might be missing the module
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| 09:45 | <ltspuser_78> Sorry, phone call... can you remind me of how to use pastebin ?
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| 09:47 | <alkisg> !pastebin
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| 09:47 | <ltsp> pastebin: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
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| 09:47 | <ltspuser_78> I think that's what you were looking forhttp://pastebin.com/Wgn8ZBR7
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| 09:49 | But I didn't have put module, because nic are classical cards (I don't remember, but 3com or intel, realtek, working out of the box with pxe)
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| 09:51 | <alkisg> -rw-r--r-- 1 root root 8,7M 2012-09-05 10:16 initrd.img-2.6.32-22-generic
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| 09:52 | ltspuser_78: that means that you modified your initramfs at that date
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| 09:52 | -rw-r--r-- 1 root root 5,3M 2011-10-07 09:42 initrd.img-2.6.32-34-generic
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| 09:52 | ltspuser_78: if you instead use that older one, it'll probably work
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| 09:52 | And once it boots, you can check for which module is needed
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| 09:53 | (modify the vmlinuz and initrd symlinks in that folder in order to select which kernel you want)
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| 09:55 | <ltspuser_78> alkisg : It didn't work, so I tried apt-get update / upgrade in chroot, and then ltsp-update-kernels / ltsp-update-sshkeys. But didn't fix it. That's why you see that.
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| 09:55 | The ancient one didn't work neither
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| 09:56 | <alkisg> ltspuser_78: when you say "didn't work", did you correctly update all the symlinks? Put another `ls -lha` to pastebin again...
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| 09:59 | <ltspuser_78> I mean : the problem I'm here for appeared this morning with older initramfs (2011-10-07 09:42 initrd.img-2.6.32-34-generic), then I tried update/upgrade of chroot and ltsp-update-kernels to fix it, but it didn't
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| 10:01 | <alkisg> Is it a single client, or are multiple clients having the same problem?
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| 10:01 | If it's a single client, then it might be a hardware related problem
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| 10:02 | <ltspuser_78> All physical clients have the same problem and I tried with a vm client... it does the same
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| 10:03 | <alkisg> ltspuser_78: it might be different problems
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| 10:04 | E.g. your initial problem might have been a rogue dhcp server, pointing your clients to another nbd server
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| 10:04 | But now, "interface not found" means there's no module for this network card
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| 10:04 | Try booting with the older initramfs, and check again the error messages, thei might be different
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| 10:05 | You need to modify 2 symlinks for that; both vmlinuz and initrd
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| 10:05 | <ltspuser_78> I'm trying back old initramfs, and I tell you
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| 10:12 | <ltspuser_78> alkisg : I tried the older initramfs, and you were right, the issue is not the same : Cannot open root device... // please append a correct 'root=' boot option // kernel panic : not syncing :VFS : unable to mount...
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| 10:13 | <alkisg> ltspuser_78: nice. And, do you get a prompt now?
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| 10:16 | <ltspuser_78> Sorry, I made a copy from the old line pxelinux.cfg/default and forgot to remove the '#' at the beginning ! No that I did it, I've got the message about network interface, in fact
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| 10:16 | <alkisg> What are your current pxelinux.cfg/default contents?
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| 10:17 | <ltspuser_78> default ltsp // label ltsp // kernel vmlinuz // append ro initrd=initrd.img break=mount nbdport=2000
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| 10:19 | <alkisg> What message about network interface? "Interface not found"?
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| 10:21 | <ltspuser_78> No interfaces found... aborting // mounting root filesystem // running /scripts/nfs-top
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| 10:22 | <alkisg> With break=mount, you should have an initramfs prompt before the "mounting root filesystem" message
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| 10:22 | Also, what's the output of `ls -lha /var/lib/tftpboot/ltsp/i386` now?
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| 10:24 | <ltspuser_78> http://pastebin.com/hy7hezUv
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| 10:27 | <alkisg> So, you're still using the newer initrd
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| 10:37 | <ltspuser_78> Ok, I made the change, and it still doesn't work, but I just noticed something weird : I've got two initrd (2.6.32-22 and 2.6.32-34), but only one vmlinuz (-2.6.32-22)
| |
| 10:38 | <alkisg> And the weirdest thing is that you also downgraded your kernel
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| 10:38 | From -34 previously you decided to downgrade to -22
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| 10:38 | <ltspuser_78> Yes, that's what I noticed too !
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| 10:38 | <alkisg> But you need a copy of the -34 vmlinuz in order to try the older initramfs
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| 10:39 | Also, ls -lha /opt/ltsp/i386/boot
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| 10:39 | ==> pastebin
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| 10:39 | <ltspuser_78> I decided nothing ! I just don't know how it happened !
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| 10:40 | http://pastebin.com/B9dQ7C4K
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| 10:41 | <alkisg> ltspuser_78: anyways it's going to take a long time this way, time which I do not have, now if you want we can share a console and troubleshoot it much more quickly
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| 10:42 | <ltspuser_78> That's what I think. What do you mean about share a console ?
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| 10:42 | <alkisg> !socat
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| 10:42 | <ltsp> socat: One way to share a console with a remote person is: [local pc] forward port 5500, run: socat tcp-listen:5500,keepalive=1 stdio,raw,echo=0 [remote pc] socat tcp:server:5500 SYSTEM:"{ sleep 1; xterm -e screen -xRR ra$$; } & exec screen -S ra$$",pty,stderr
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| 10:43 | <alkisg> So actually you just need to run these 2 commands on your server:
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| 10:43 | sudo apt-get --yes install socat screen
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| 10:43 | socat SYSTEM:"sleep 1; exec screen -xRR ra",pty,stderr tcp:alkisg.dyndns.org:25547 & screen -l -S ra
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| 10:44 | <ltspuser_78> done
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| 10:48 | <alkisg> ltspuser_78: why do you have dkms in your chroot? nvidia/ati binary drivers?
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| 10:49 | <ltspuser_78> I tried to install nvidia drivers in chroot, but it didn't work
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| 10:50 | (installation was ok, option added in lts.conf, but no effect on clients)
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| 10:50 | <alkisg> Installation was not ok
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| 10:51 | <ltspuser_78> Ah !
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| 10:51 | <alkisg> It complained because you have amd64 server kernel and it couldn't compile i386 module on the chroot
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| 10:52 | <ltspuser_78> That's certainly why it didn't work ;-) . It wasn't really important yet, this was just a first try. I decided to try back one day when I would have time to
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| 10:53 | But everything worked fine after, for months.
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| 10:54 | <alkisg> Sure, if you didn't touch your chroot, then the problem wasn't there.
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| 10:54 | But you touched it afterwards, trying to fix the problem
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| 10:56 | <ltspuser_78> dhcp is on another server
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| 10:57 | <alkisg> ltspuser_78: ok, try to boot a client
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| 10:58 | <ltspuser_78> Same issue :(
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| 10:59 | <alkisg> This was supposed to tell me your dhcp setup
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| 11:00 | ..any special configuration in your dhcp server that prohibits it from answering to the ltsp server?
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| 11:00 | <ltspuser_78> What kind of special conf ?
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| 11:01 | <alkisg> "deny this client"
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| 11:01 | <ltspuser_78> It doesn't deny this client, since it first accept it for pxe
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| 11:02 | <alkisg> I'm trying to get an IP for the ltsp server, not for the client
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| 11:02 | Just to see your dhcp options
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| 11:03 | ltspuser_78: try another client?
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| 11:03 | *or the same, just reboot i mean
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| 11:03 | <ltspuser_78> It' a little bit complicated, because options are numerous, and dispatched in multiple files. But it has always accepted connections from ltsp clients
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| 11:04 | <alkisg> ltspuser_78: did you say something about trying in a VM?
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| 11:04 | What VM?
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| 11:04 | <ltspuser_78> The same : nothing new. Others : they are far from me
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| 11:04 | It's just a vmware hosted machine, simply configured to boot on network
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| 11:05 | <alkisg> Yeah, but it would give me access to the client console for troubleshooting
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| 11:06 | <ltspuser_78> Ah ! I won't be able to do that now, because I've got a meeting in 30 minutes, and I will have to leave. But if you agree, we could meet later here and do that ?
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| 11:07 | <alkisg> We'll see, if we both have free time for this. Cu later. :)
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| 11:07 | <ltspuser_78> OK. Great thanks to you for your help, and Cu later.
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| 13:11 | <markit> hi, OT, is there any english speaker that can explain me the phrase "it gets everybody especially worked up" ?
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| 13:11 | (is about flames in GNU/Linux world)
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| 13:12 | <dead_inside> worked up would be like excited
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| 13:13 | <dead_inside> so that phrase is about something getting everyone excited or anxious
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| 13:14 | <markit> dead_inside: thanks a lot!
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| 13:14 | <dead_inside> np
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| 13:58 | <servercbe> Hello... I have an issue.. can you helpme... I have EPOPTES... use to work fine until 3 days ago .. now it doesnt recognazed any thin client
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| 13:58 | any suggestion??
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| 13:59 | somebody there?
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| 14:01 | <alkisg> servercbe: hi
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| 14:01 | <servercbe> HI
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| 14:01 | sorry
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| 14:01 | <alkisg> So, you run `epoptes` and you don't see any clients?
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| 14:01 | <servercbe> can you help me please?
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| 14:01 | yes
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| 14:01 | <alkisg> Are you running epoptes on a thin client?
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| 14:01 | Or are you working on the server?
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| 14:01 | <servercbe> server
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| 14:02 | <alkisg> OK. Now login on a thin client, open a gnome-terminal, and run this there: /usr/sbin/epoptes-client
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| 14:02 | What's the output of that command then?
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| 14:02 | (login with a different user account, e.g. a student, not a teacher)
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| 14:03 | <servercbe> sorry, but i will have to close this session... or is there anything that I am no undertanding
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| 14:03 | <alkisg> Do you have a server and a thin client?
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| 14:04 | Run epoptes on the server, and epoptes-client on the thin client
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| 14:04 | <servercbe> at the same time... I think so... I use this computer to connect the other computers... sorry.. I am pretty new on it...
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| 14:04 | oh...
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| 14:05 | running epoptes on the server now.....
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| 14:05 | I will go to the thin client.. giveme one moment
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| 14:07 | <servercbe> thanks for been patient...
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| 14:19 | <servercbe> I am back!!!! it says: *epoptes-client connecting to localhost:798......done
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| 14:20 | <alkisg> OK, and you don't see that client in the epoptes window?
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| 14:20 | <servercbe> no
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| 14:20 | I have 6 computers conected and I cant see anyone
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| 14:21 | <alkisg> On the server, close epoptes, open gnome-terminal, and run `epoptes` from the terminal there
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| 14:21 | What's its output?
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| 14:22 | <servercbe> Which output?... sorry... on epoptes screen?... Nothing...
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| 14:22 | <alkisg> No, on the terminal
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| 14:23 | alkisg@alkis:~$ epoptes
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| 14:23 | Got clients: 127.0.0.1:35654
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| 14:23 | ---
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| 14:23 | **addClient's been called for 127.0.0.1:35654
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| 14:23 | * Won't add this client to my lists
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| 14:23 | Stuff like that
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| 14:24 | <servercbe> nothing... it is freez.... after "*epoptes-client connecting to localhost:798......done" the cursor is blinking...
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| 14:25 | should I update anything...???
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| 14:25 | <alkisg> No
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| 14:25 | You did this part:
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| 14:25 | (1) go to a thin client, login as a student, open gnome-terminal, run epoptes-client
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| 14:25 | Now I want you to do this part:
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| 14:25 | (2) go to the server, login as the teacher, open gnome-terminal, run epoptes
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| 14:25 | And give me the output of "epoptes" as it appears on the terminal
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| 14:26 | But I have to go right now, kids waiting, so be back later...
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| 14:27 | <servercbe> * Epoptes-client connecting to server:789... 2012/09/05 08:27:07 socat[11129] E getaddrinfo("server", "(null)", {1,0,1,6}, {}): Name or service not known
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| 15:27 | <servercbe> hello
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| 16:31 | <monteslu> anyone have jetpipe working on the latest RHEL6/Centos6/SL6 ?
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| 16:32 | actually the client is running a fedora11 chroot. was missing python-daemon, fixed that but still can't print. And my python coding skills are lacking
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| 18:00 | <dtrask> hey...is anyone able to help me troubleshoot why I cannot get cups installed in localapps?
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| 18:00 | I need to be able to print from localapps
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| 18:00 | cups installs, but will not finish...will not --configure
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| 18:10 | <Hyperbyte> dtrask, whoa
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| 18:11 | You are compiling cups from source in order to print from local applications?
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| 18:11 | Please provide:
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| 18:11 | - Which distro/version are you running?
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| 18:11 | - Which LTSP version are you running?
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| 18:11 | - Whatever gave you the idea of compiling cups from source in the chroot?
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| 18:12 | <dtrask> sorry..Im back
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| 18:12 | I'm running Edubuntu
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| 18:13 | <highvoltage> hey there dtrask
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| 18:13 | <dtrask> https://help.ubuntu.com/community/UbuntuLTSP/LocalAppsLucidPrinting
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| 18:13 | i need to be able to print from web browsers that are running as localapps
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| 18:13 | I followed the instructions in the link, but cannot keep cups running
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| 18:14 | I'm probably missing something
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| 18:14 | or there is a newer better way
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| 18:14 | highvoltage: Hi!
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| 18:14 | running Edubuntu 12.04
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| 18:14 | anyone?
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| 18:15 | <highvoltage> you can't keep cups running? what do you mean? does it die?
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| 18:16 | <dtrask> i was getting errors when installing it....it wouldn't --configure
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| 18:16 | <highvoltage> did you have proc and dev mounted?
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| 18:16 | (in the chroot?)
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| 18:16 | <dtrask> i removed it...and tried again...finally it configured and was running
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| 18:16 | I had proc mounted....dev?
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| 18:17 | #mount -t proc proc /proc
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| 18:17 | what else?
| |
| 18:18 | anyway....it was running, but it still isn't seeing the shared printers from the server (after ltsp-update-image...and a reboot of the client)....so I ran "service cups stop" and now I cannot restart it...it fails
| |
| 18:19 | what is the command to mount /dev?
| |
| 18:19 | syntax
| |
| 18:20 | More background....I do not have any printers installed on the Edubuntu server. I have an Ubuntu print server for the whole building...in the Edubuntu server I just ticked the box to share printers shared by other systems
| |
| 18:20 | works fine for non-localapps applications....my issue is just localapps
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| 18:21 | <Hyperbyte> dtrask, which Edubuntu version?
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| 18:22 | <dtrask> 12.04
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| 18:22 | precise
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| 18:22 | <Hyperbyte> Did you see the notice on top of the howto you're following?
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| 18:23 | You are following a 10.04 howto
| |
| 18:23 | Another question: the printers you are trying to print to from local applications, where are those connected to? Are they network printers? Are they connected to the server? To local client?
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| 18:23 | <dtrask> I know, but there is nothing else....hence why I'm here. I NEED to get printing working in localapps
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| 18:24 | a print server running on Ubuntu
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| 18:24 | <Hyperbyte> dtrask, right - but by applying the wrong instructions to a working system, you -can- make things a lot worse you know.
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| 18:25 | dtrask, don't be vague please. "A print server running on Ubuntu" can mean anything. Do you mean the printers are configured in CUPS on your LTSP server?
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| 18:25 | <dtrask> I am in a school....we have about 75 thin-clients....the print server is running on an Ubuntu server...and I'm publishing to all...On the edubuntu server I'm simply using those shared printers
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| 18:25 | <Hyperbyte> Right.
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| 18:25 | <dtrask> NO...they are running on another print server
| |
| 18:25 | <Hyperbyte> So... your printers are all accessible through the network
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| 18:26 | And they are configured in the CUPS of your thin client server?
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| 18:26 | <dtrask> I can see them and use them (print) from any app that is NOT a localapp
| |
| 18:26 | yes
| |
| 18:26 | <Hyperbyte> Okay
| |
| 18:26 | By default, LTSP thin clients' localapps use the CUPS daemon running on the LTSP server.
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| 18:26 | <dtrask> my problem is...firefox, google-chrome, and a few other programs are running as localapps and as a result cannot print
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| 18:26 | <Hyperbyte> So printing from local-apps *should* work out of the box.
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| 18:27 | <dtrask> aha
| |
| 18:27 | but it doesn't
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| 18:27 | <Hyperbyte> Go into administrative CUPS interface running on the LTSP server, enable all printers as shared, see if that makes a difference.
| |
| 18:27 | It could just be a matter of the clients not having proper access to the printers.
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| 18:27 | <dtrask> ok...hang on
| |
| 18:27 | <Hyperbyte> Either way, that's where you should be debugging
| |
| 18:28 | lts.conf has a variable CUPS_SERVER:
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| 18:28 | !lts.conf
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| 18:28 | <ltsp> lts.conf: http://manpages.ubuntu.com/lts.conf
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| 18:28 | <Hyperbyte> You could even point CUPS_SERVER directly to your Ubuntu print server, so you don't even have to go through the LTSP server
| |
| 18:28 | Presumably the Ubuntu print server is already set up properly for sharing
| |
| 18:29 | (and this my friend, is why you should never use old howto's on new systems, they are often wrong ;-))
| |
| 18:29 | Dinner, be back in ~15.
| |
| 18:31 | <thebwt> dtrask: I like how he links to the lts.conf man page for documentation, when the command he is informing you of isn't documented there
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| 18:32 | dtrask: lts.conf can do amazing things, many of them not documented.
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| 18:33 | <dtrask> would it be CUPS_SERVER = 10.0.6.200 for example?
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| 18:33 | <thebwt> let me check mine
| |
| 18:34 | dtrask: yup
| |
| 18:36 | <dtrask> Eureka! You rock!
| |
| 18:37 | <thebwt> i was doing the exact same thing as you a month ago ;)
| |
| 18:37 | tip: don't google for help on ltsp, it's to new
| |
| 18:37 | come straight here
| |
| 18:37 | <dtrask> ok...thx
| |
| 18:38 | <thebwt> or risk messing things up/ doing things dumb
| |
| 18:38 | <dtrask> yeah...the documentation is lacking for the newest versions
| |
| 18:40 | <thebwt> so my own question : I'm running xubuntu thick clients, screen locking doesn't work. When a user tries to get back into the system authentication always fails.
| |
| 18:40 | my own problem:*
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| 18:46 | <alkisg> thebwt: password hashes aren't copied to fat clients due to security concerns
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| 18:46 | So they can't sudo, unlock, etc etc
| |
| 18:47 | Previous gnome versions understood that the password is empty and never locked the screen automatically
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| 19:04 | <||cw> couldn't a fat client's pam be made to auth back to the server somehow?
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| 19:06 | <alkisg> That's what libpam_sshauth is trying to do. We hope that Scott will have it ready soon.
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| 20:20 | <||cw> I'd have thought that would already exist
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| 20:24 | <alkisg> Yeah it's called ldap :) but they say it's hard to setup and use, so it's not something people want in their default installation
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| 20:30 | <||cw> i guess
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| 20:35 | <markit> btw, since we are talking to authentication
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| 20:35 | for children is a bit annoying that when in LDM enter the wrong password (or username)
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| 20:36 | are not imediatly notified, but the system seems to start and instead slowly reloads
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| 20:36 | is something that can be fixed in the future, or is an intrinsic limitation?
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| 20:36 | <alkisg> LDM will be removed completely, so yeah that'll be fixed too :D
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| 20:37 | <markit> ehm, what will be used instead?
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| 20:37 | <alkisg> lightdm, kdm, whateverdm...
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| 20:37 | <markit> and will not behave the same?
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| 20:38 | <markit> I guess not, from your previous answer lol
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| 20:38 | <alkisg> LDM can be fixed so that it doesn' t restart after bad authentication attempt too
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| 20:39 | It's just that noone has bothered to do it yet
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| 20:39 | <markit> I see
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| 20:53 | <vagrantc> alkisg: it's not really fixable, in the sense that it depends on what the ssh prompt is
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| 20:53 | <alkisg> vagrantc: there's no need to restart X for failed login attempts
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| 20:54 | <vagrantc> and different configurations of the ssh prompt can mess it up
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| 20:54 | alkisg: but there's no way to distinguish between bad password vs. some other random error
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| 20:54 | <alkisg> The problem isn't the ssh prompt; is the X restarting
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| 20:55 | X should be restarted after the user session ends, to clean up stuff, OK, but there's no need to restart it just because of authentication errors, whatever those are
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| 20:55 | <vagrantc> there's no way to determine authentication errors from other errors
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| 20:56 | <alkisg> So?
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| 20:56 | "server not found at all", ok, so why restart X then?
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| 20:56 | <vagrantc> unless ssh gives meaningful return codes
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| 20:56 | <alkisg> All those are not related to X
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| 20:56 | <vagrantc> correct.
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| 20:57 | <alkisg> X should be restarted after a session because we don't cleanup things well enough
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| 20:57 | But for displaying ssh or other messages, there's no reason to restart X
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| 20:57 | <vagrantc> i agree there's no reason, but there's also no way to tell when it's the right thing to do.
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| 20:58 | <alkisg> After a successfull authentication, and when that is over
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| 20:58 | It's very clear
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| 20:58 | All errors => don't restart X
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| 20:58 | Success => ok, restart X when the session dies
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| 20:59 | * vagrantc heads to lunch | |
| 20:59 | <elias_a> Funny lunch times :P
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| 22:11 | <guyver> When I try to build the LTSP client image, it fails during the downloads with a hash sum mismatch. Apt-get clean has no effect
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| 22:13 | Anyone please?
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