IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 15 July 2015 (all times are UTC)
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| 03:15 | <cstk421> so this was suggested to me earlier today. and ive been preparing to try this environment but i dont really understand the setup for this portion of it. looking for some clarification
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| 03:15 | One VM for all users, with a per-user snapshot on top of them
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| 03:15 | ltsp thin clients with vbox as a localapp
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| 03:16 | the basic idea is fat clients pxe boot and they bring up the user's "desktop" from the 1 vm
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| 03:16 | <maldridge> cstk421: what about it are you struggling with?
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| 03:17 | <cstk421> ok i have done the thin client pxe boot --> xfreerdp --> windows 7 vm. thats simple enough but discovered (someone told me and i read about it) it would cost me ~2.5gbps per user which is ridiculous. so I was told to go this router
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| 03:18 | route
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| 03:18 | the environment is to have the 1 windows 10 VM and ltsp manage user auth and connect them to their respective desktops.
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| 03:18 | the confusing part is the one vm and per user snapshot part
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| 03:19 | does that just mean multiple user accounts on that windows vm ? and the (correct me if im wrong) nfs home directories for each user is handled by ltsp
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| 03:19 | ?
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| 03:20 | here is the convo in context http://pastebin.com/NVg6x6zi
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| 03:35 | did i lose you maldridge ?
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| 03:37 | <maldridge> sorry, had to poke a dead server
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| 03:38 | <cstk421> no biggie
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| 03:38 | i put up the conversation in its entirety if that hels
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| 03:38 | helps
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| 03:38 | <maldridge> so the way I interpret that is everyone can see the same VM, but its a COW base, and thier changes get saved somewhere else
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| 03:39 | I think virtualbox does this for you, but I've never tried to set that up
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| 03:40 | <cstk421> the main argument he was making was if i had all the vm's (1 per user) on the server and just had the PXE client rdp to them the network would be really taxed
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| 03:40 | i just dont get how i have the client PXE boot to LTSP and then run vbox ?? and that somehow connects to the vm ?
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| 03:42 | wait a minute i think i may have understood it just now. does this mean that virtual box would run on the LTSP server AND host my windows vm that the PXE clients are connecting to ?
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| 03:56 | <maldridge> I think it means that you should put the vbox in the image
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| 03:56 | so that the vm is running locally, doing the graphically intensive bits locally, and using relatively low overhead network calls to access the disk
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| 03:58 | <cstk421> put vbox in the PXE boot image ?
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| 04:02 | <maldridge> not in the pxe image, but in the NBD image that it boots from
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| 04:05 | <cstk421> and would that be just vbox ? or vbox running a windows 7 vm ?
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| 04:16 | <maldridge> so the machine pxe boots, then loads its rootfs and apps from nbd/nfs
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| 04:17 | in the bit it loads in the second part, you put virtualbox, that way its a local app, and you aren't shipping lots of data over the network unnecessarily
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| 04:23 | <cstk421> k
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| 08:16 | <alkisg> !socat
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| 08:16 | <ltsp`> socat: One way to share a console with a remote person is: [local pc] forward port 5500; apt-get install socat; socat tcp-listen:5500,keepalive=1 stdio,raw,echo=0 [remote pc] apt-get install socat screen; socat SYSTEM:"sleep 1; exec screen -xRR ra",pty,stderr tcp:REMOTE-IP:5500 & screen -l -S ra
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| 08:16 | <alkisg> !socat-
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| 08:16 | <ltsp`> I do not know about 'socat-', but I do know about these similar topics: 'socat-screen', 'socat-server'
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| 08:16 | <alkisg> !socat-server
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| 08:16 | <ltsp`> socat-server: to get remote xterms to your LTSP clients, put RCFILE_01="while sleep 5; do TERM=xterm LANG=en_US.UTF-8 socat tcp:server:5500 EXEC:'bash -l',pty,setsid,stderr; done &" in lts.conf, and on the server run: socat tcp-listen:5500,reuseaddr,keepalive=1,fork EXEC:"xterm -e 'socat stdio,raw,echo=0 fd:67'",fdin=67
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| 08:17 | <alkisg> !socat-screen
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| 08:17 | <ltsp`> socat-screen: to share a local thin client shell with a remote person, see https://help.ubuntu.com/community/UbuntuLTSP/Troubleshooting/socat-screen
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| 08:40 | <maldridge> alkisg: wouldn't tmux be easier?
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| 08:41 | <alkisg> screen is the same as tmux, no difference there, and socat is needed to access it via network
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| 08:42 | tmux has some issues with utf8 though
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| 08:42 | <maldridge> well, sort of, as tmux can do shared sessions natively
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| 08:42 | on what platform? I've had no issues with it over the last 4 years
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| 08:43 | <alkisg> shared sessions over the network?
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| 08:43 | or do you mean via ssh first?
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| 08:43 | bb in 10'...
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| 08:44 | <maldridge> well ssh first is my prefered way, but I"ve also dropped a fifo into an nfs share and used that
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| 08:45 | <alkisg> I don't want to give people ssh access or ask them for ssh access just to help them in a troubleshooting session...
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| 08:45 | That's where socat helps
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| 08:45 | Otherwise, tmux is the same as screen, only it also has character set issues
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| 08:46 | <maldridge> hm, I dispute the character set issues, but that is a discussion for another place
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| 08:47 | <alkisg> Are you aware of any specific advantages that tmux has over screen?
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| 08:48 | <maldridge> beyond its slightly faster server model and better nesting behaviour, nothing impressive
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| 08:49 | its a terminal multiplexer, not a lot to it
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| 08:49 | <alkisg> I did the comparison a couple of years ago and I remember the character set issues of tmux, other than that I didn't notice anything else...
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| 08:49 | OK, no big deal :)
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| 08:50 | <maldridge> I know there were a lot of issues before I started using it, but in the last few years I haven't had any character issues. That being said, all of my terminals are of course localized to latin characters fitting nicely inside the ASCII range :)
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| 08:51 | <alkisg> Unfortunately xdg mandated that user folders like "Desktop" are localized...
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| 08:51 | So I have to type things like "cd 'Επιφάνεια εργασίας'"
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| 08:52 | It would be much cleaner the windows-way, with translations only effective in UIs like nautilus
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| 08:52 | <maldridge> that's odd, I was unaware that xdg had requirements for things like that
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| 08:52 | <alkisg> xdg-user-dirs etc
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| 08:52 | There's a spec for it
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| 08:52 | <maldridge> I knew it had requirements for the X hooks, but not the actual disk stuff
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| 08:54 | <alkisg> Gnome even prompts the user to rename the folders if he logs in with a different locale
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| 08:57 | <maldridge> wow, and I thought windows had some glitchy localization software
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| 13:11 | <raph__> hi
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| 13:15 | <work_alkisg> Hello
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| 18:12 | <clarkhaos> hi everybody
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| 18:12 | Does someone know where in a LTSP cluster the X server runs?
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| 18:13 | I gues it is inside the chroot boot image usually at /opt/ltsp/$arch
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| 18:13 | am I right?
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| 18:15 | I am asking it because I am setting up a LTSP cluster enviromment and I need a vnc solution to connect to the terminals already logged in LTSP server
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| 18:16 | and I am not sure where should I run my vnc server, it it should be run inside chroot boot image ot inside LTSP SERVER APP
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| 18:17 | I ve tried both, and both failed, I was just wondering where X is running so then I could direct the efforts to the right place
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| 18:18 | in making vnc server runs
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| 18:46 | <work_alkisg> !epoptes
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| 18:46 | <ltsp`> epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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| 18:46 | <work_alkisg> clarkhaos: check this ^ one, it might help you..
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| 19:18 | <netlog23> ltsp to configure DHCP functions provided by Windows Server 2003.
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| 19:45 | <netlog23> to configure DHCP functions provided by Windows Server 2003.
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| 21:36 | <cstk421> how do i do a build client to add virtualbox with a windows vm ? or where do i start ishould probably ask
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| 23:44 | <cstk421> looking for some guidance on setting up a client image with vbox to connect to a windows vm. I think i have done the chroot process correctly and installed virtualbox but had alot of errors.
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| 23:47 | <maldridge> I'm not really familiar with the chroot method, but effectively you just want to set it as a local app, I think there's docs on the wiki for that
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| 23:50 | <cstk421> the docs indicate you need to chroot first then run your "apt-get install" and such to add it to the image. then run the update image commands. make sense ? what method are you familiar with ?
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| 23:52 | <maldridge> pnp, but that has some limitations on client arch
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| 23:52 | virtualbox will gripe when you install it in the chroot, I'm prettsure that thedkms steps won't complete
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| 23:54 | <cstk421> so it completed the update image and i booted the pxe image. virtualbox is installed as expected and runs. now the confusing part is how do i add a windows vm to this ? do i just use vbox and install like any other vm ? or is it something that needs to be done on the ltsp server?
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| 23:55 | <maldridge> it depends on how you want the VM to work
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| 23:55 | really all you care about is having a base image at each client gets, right?
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| 23:56 | do theclients need to save data at all?
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| 23:57 | <cstk421> One VM for all users, with a per-user snapshot on top of them
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| 23:57 | ltsp thin clients with vbox as a localapp
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| 23:57 | i guess so yes. if you remember this was the premise "
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| 23:57 | ive gotten closer but the last part is confusing. also as for the data storage part everything should be stored on the file server that exists now in their environment (windows server)
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| 23:58 | as for folder's this was how he worded it
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| 23:58 | And a shared folder that would map to /home/user1/Documents
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| 23:58 | <maldridge> are you running enterprise windows by chance?
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| 23:58 | <cstk421> yes
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| 23:59 | "And their snapshot would be in /home/user1/VirtualBox VMs/xxx, and would be read-write, with a read-only base on /home/Shared/yyy "
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| 23:59 | sorry to keep dropping these but they explain more than i can
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| 23:59 | <maldridge> do your user's sessions live on the fileserver?
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| 23:59 | i.e. do you have a group policy to redirect user homes?
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