IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 8 September 2015 (all times are UTC)
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| 05:36 | <rootd00d> ola!
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| 05:38 | <alkisg> Hello
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| 05:42 | <rootd00d> how are you?
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| 05:42 | i'm having trouble with an ltsp install under debian jessie.
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| 05:43 | this will sound stupid - does ldm-server go in the chroot or on the host?
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| 05:43 | <alkisg> host
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| 05:44 | https://wiki.debian.org/LTSP/Howto
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| 05:47 | <rootd00d> 1) i can't do standalone because there's a separate DHCP server and 2) i'm not doing NBD.
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| 05:48 | i have clients that are getting hung at "A start job is running for LSB: Raise network interfaces..."
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| 05:50 | <alkisg> Debian uses NFS by default, no need for NBD
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| 05:50 | If you have control on a separate DHCP server, you don't need to install isc-dhcp-server in the LTSP server
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| 05:50 | About the clients getting hung, it sounds like it's trying to initialize the network interfaces, which it shouldn't; LTSP automatically marks them as "manual"
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| 05:51 | Do the clients have more than one network interfaces?
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| 06:21 | <rootd00d> alkisg: i was just trying to point out that the howto doesn't really focus on this scenario at all. i guess i could have looked at the dependencies of ltsp-server-standalone though. :)
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| 06:22 | alkisg: they are set to manual, yes. now, i'll point out, i'm doing my testing remotely using a PXE booted Hyper-V machine, but i've had this work in other installations.
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| 06:22 | alkisg: "installations" == other sites.
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| 06:22 | <alkisg> rootd00d: on the how to, it says: "If you want more fine-grained control, splitting some services off to separate servers, you can install ltsp-server instead, and manually install each of the other services. "
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| 06:22 | <rootd00d> alkisg: i'm gonna head over to the office. i've lost my connection.
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| 06:23 | <alkisg> np
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| 06:23 | <rootd00d> alkisg: ya i have ltsp-server installed, but that doesn't install ldm-server
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| 06:23 | <alkisg> Hrm, it only suggests it, while it should probably be recommending it...
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| 06:23 | <rootd00d> alkisg: to be honest, despite trying, i haven't been able to really grok the ltsp architecture that well. i've done lots of hacking and customization, but my scenario is all around running xfreerdp, so i haven't really had to touch the LXDE stuff...
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| 06:24 | <alkisg> Where is LXDE mentioned?
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| 06:24 | LDM is the LTSP display manager, not related to LXDE at all
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| 06:24 | <rootd00d> alkisg: well, LDM is the LXDE display manager, isn't it? huh. interesting.
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| 06:24 | <alkisg> Nope
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| 06:25 | if you're going to use LDM (which is possible with xfreerdp), then you'll need ldm-server
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| 06:25 | If you're not (which is also possible with xfreerdp), then you don't need ldm-server
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| 06:25 | http://www.berryterminal.com/qemu-stuff.png
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| 06:25 | <rootd00d> alkisg: ya i just use an xinitrc script that launches a basic zenity dialog prompting for credentials.
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| 06:26 | <alkisg> You can prompt for the credentials from ldm instead
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| 06:26 | See the picture.
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| 06:26 | LTSP provides an xfreerdp script for that
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| 06:26 | <rootd00d> alkisg: all the ltsp stuff i've seen so far just gets me a desktop...
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| 06:26 | <alkisg> Google for ltsp xfreerdp
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| 06:26 | Or ask here
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| 06:28 | <rootd00d> alkisg: in jessie at least, the xfreerdp script is just a symlink of rdesktop.
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| 06:28 | <alkisg> It should be the opposite, rdesktop a symlink of xfreerdp
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| 06:28 | <rootd00d> alkisg: all the docs i've ever found are either old or inapplicable.
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| 06:28 | <alkisg> Because the same script supports both
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| 06:29 | Anyway, I can't help much with the docs, it's up to you (all xfreerdp users) to write them :)
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| 06:29 | I can help in irc though
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| 06:29 | <rootd00d> alkisg: well i'd be interested in getting a freerdp session using LDM somehow.
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| 06:30 | alkisg: oh right. the reason i wrote a custom job was because the LTSP gives you like, an RDP login at the server. so you boot up, and it's like you're sitting at the console of the windows server.
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| 06:31 | <alkisg> ?
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| 06:32 | <rootd00d> alkisg: which is all well and could; except the connection times out every 30 seconds. the screen goes black, and then very quickly shows you a login screen again. that's not really a problem so much except for the fact that every time it does that, the windows server was losing about 1MB of memory. so, it would only be a matter of time before a 32GB server had 20GB+ of memory in "non-paged kernel memory po
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| 06:32 | <rootd00d> ol."
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| 06:32 | <alkisg> rootd00d: there are 2 ways to use rdp with ltsp
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| 06:32 | One, to use the xfreerdp script, which does what you're saying if you provide an empty username,
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| 06:32 | i.e. it shows the windows connection screen
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| 06:32 | <rootd00d> alkisg: i inspected the process and found it was leaking file handles to registry keys. doesn't seem to happen on a physical remote host. definitely happens if the host is in hyper-v.
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| 06:33 | <alkisg> That one times out, but you can change the windows settings so that it doesn't
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| 06:33 | The second way to use rdp with ltsp, is by setting the RDP_SERVER and RDP_OPTIONS in lts.conf, and then show LDM
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| 06:33 | <rootd00d> alkisg: i'd like to know more about that windows setting.
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| 06:33 | <alkisg> LDM will get the credentials from the user and _then_ connect to the windows server, so it doesn't time out there
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| 06:34 | That's similar to the zenity script you're using
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| 06:34 | <rootd00d> alkisg: huh. well lemme head over there and see if i can get this shit working before i have to revert my snapshot. :)
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| 06:34 | <alkisg> Check the irclogs.ltsp.org, it was mentioned before here, although I'm not using windows at all since 2008 so I don't have the setting handy...
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| 06:34 | <rootd00d> alkisg: the zenity solution is nice cause it's super fast...
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| 06:34 | <alkisg> LDM is fast too, it's just a small .c program
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| 06:34 | <rootd00d> alkisg: cool i will. thanks man!
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| 06:34 | <alkisg> You're welcome
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| 06:35 | <rootd00d> alkisg: well, in my experience, all the clients really lag out talking to the server. it's kind of annoying. once the rdp session is up, things are generally fine. but ltsp seems to tweak out on me often at another site.
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| 06:35 | <alkisg> ldm runs locally on the client
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| 06:35 | <rootd00d> alkisg: i'm tempted to bump to sid
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| 06:36 | alkisg: right but it's gotta fetch the files over nfs.
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| 06:36 | <alkisg> nbd is 5 times faster than nfs, for disk access
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| 06:36 | <rootd00d> alkisg: i spent a night trying to get nbd going. all the clients would work... then hang.
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| 06:36 | alkisg: plus, i couldn't handle having to rebuild everytime i changed one file...
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| 06:37 | bbiab
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| 06:37 | <alkisg> You can have both nbd and nfs running. NFS for quick tests,
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| 06:37 | nbd for deployment
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| 08:37 | <rootd00d> alkisg: eh so the power is out at the office. :)
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| 08:38 | <alkisg> Good luck! :)
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| 09:44 | <fnurl> power and generators are over-rated
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| 09:44 | but grats for staying on irc regardless
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| 11:39 | <rootd00d> fnurl: actually i was a little disappointed with myself. i couldn't figure out how to get tmux to keep running despite putting the laptop to sleep and travelling in a car...
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| 15:20 | <johng> how can I setup thin clients on server without internet with a local repository?
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| 15:21 | Thanks
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| 15:57 | <alkisg> johng: see this web page:
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| 15:57 | !ltsp-pnp
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| 15:57 | <ltsp> ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 15:58 | <alkisg> This doesn't need any internet access at all. It doesn't even need a local repository. :)
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| 18:29 | <alkisg> vagrantc: manpages.debian.org/p910nd
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| 18:32 | <vagrantc> alkisg: last i looked at that it wasn't a functional relacement...
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| 18:32 | <alkisg> vagrantc, do you remember why so?
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| 18:32 | openwrt etc seem to prefer it
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| 18:32 | <vagrantc> alkisg: i think it didn't support some broad class of devices
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| 18:33 | <alkisg> Serial printers? Are there any such printers?
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| 18:33 | It claims to support parallel and usb ones
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| 18:33 | <vagrantc> there are definitely serial printers in use in sites using LTSP ...
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| 18:34 | <alkisg> How do these work without ltsp?
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| 18:35 | jetpipe ram: 11716 5300, vs p910nd: 2316 1324
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| 18:36 | <vagrantc> maybe the folks who need it can work on p910nd serial support ?
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| 18:36 | <alkisg> It sounds fine to me :)
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| 18:36 | <vagrantc> but yeah, it would be nice to drop support for more code...
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| 18:36 | <alkisg> And, it might be as simple as a wrapper script
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| 18:36 | <vagrantc> especially if it has a lower footprint
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| 18:36 | <alkisg> That sets the serial device parameters, before invoking p910nd
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| 18:37 | It's in .c, it definately has a lower footprint than python
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| 18:37 | The other alternative is socat, I could research that one instead
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| 18:37 | <vagrantc> might be worth asking on ltsp-discuss?
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| 18:37 | <alkisg> But when I saw that a dedicated project exists, I thought, why not... it even has a .spec file :P
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| 18:40 | http://sourceforge.net/p/p910nd/bugs/3/ ==> ipv6 support
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| 18:41 | <vagrantc> wow, sourceforge...
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| 18:41 | that's a project for LTSP in general, getting it up to snuff with ipv6
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| 18:42 | <alkisg> Getting rid of code will help a lot :D
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| 18:43 | cyberorg: do you have the p910nd package in opensuse?
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| 18:43 | warren: if I don't see it https://admin.fedoraproject.org/pkgdb/packages/p910nd*/ it means it's not packaged for fedora?
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| 18:44 | *it in...
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| 18:47 | I tried "p910nd -f /dev/usb/lp0" + adding it to the server via cups, it worked fine
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| 18:55 | jetpipe worked fine too...
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| 18:56 | jetpipe crashed with nmap...
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| 18:57 | p910nd didn't crash...
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| 18:58 | <vagrantc> well, something worth exploring
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| 18:58 | <alkisg> vagrantc: did we commit the nmap patch?
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| 18:59 | https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/1273680
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| 18:59 | * alkisg checks if it works... | |
| 19:00 | <alkisg> It survived nmap now, let's see if it also prints after that...
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| 19:01 | <vagrantc> i didn't
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| 19:01 | <alkisg> vagrantc: it worked fine, I'm committing it...
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| 19:04 | <vagrantc> cool
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| 19:10 | <alkisg> socat also printed fine, it survived nmap, and it's using: 4944 1136
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| 19:12 | What I tried was: socat -u tcp-l:9100,fork /dev/usb/lp0
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| 19:14 | Previously, for fat client users, I was proposing to just enable cups in the fat clients and not use jetpipe at all
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| 19:14 | But while that worked fine for autodetected + autoinstalled printers, there are some printers that need an additional step, either "next button => next button" etc in the installation, or a ppd...
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| 19:15 | <alkisg> And that's hard to do in fat clients... so I'm checking if jetpipe etc will work fine even for fat clients
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