IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 1 September 2017 (all times are UTC)
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| 05:05 | <achyut> Hi
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| 05:05 | Good Morning
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| 05:07 | we are planning to use LTSP
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| 05:08 | <achyut> hello
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| 05:08 | <alkisg_web> hello
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| 05:09 | <achyut> if we want to user 50 client in LTSP server, then what type of configuriton we need
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| 05:10 | <alkisg_web> What kind of clients? CPU/RAM?
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| 05:11 | <achyut> we have 50 users want to connect LTSP server through pxe boot
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| 05:11 | <alkisg_web> How much RAM do the clients have
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| 05:11 | 1 GB? 256 MB?
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| 05:11 | <achyut> 2 Gb
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| 05:12 | each one have atleast 2gb and max 4 gb RAM
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| 05:12 | <alkisg_web> With fat clients you don't need a good server
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| 05:12 | !ltsp-manager
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| 05:12 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 05:13 | <alkisg_web> So, a normal server with 4 or 8 gb ram, a recent cpu, and a gigabit nic, is fine
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| 05:13 | <achyut> ik
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| 05:13 | ok
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| 05:13 | i'm using above url to install ltsp server..https://help.ubuntu.com/community/UbuntuLTSP/LTSPQuickInstall
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| 05:14 | after installing i'm not able to boot from client through pxe..getting DHCP not found error
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| 05:14 | <alkisg_web> That's a very very old tutorial, it might have issues
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| 05:14 | Don't use it
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| 05:14 | Use either ltsp-manager or ltsp-pnp:
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| 05:14 | !ltsp-pnp
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| 05:14 | <ltsp> ltsp-pnp: ltsp-pnp is the recommented method to install and maintain LTSP for "usual" setups. Since it doesn't involve chroots, it requires little to no command line to maintain it. It automatically supports both thin and fat ltsp clients. https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 05:14 | <alkisg_web> Best, use ltsp-manager
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| 05:16 | <achyut> which one easy to install as i have not enough knowledge on linux
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| 05:16 | <alkisg_web> This one:
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| 05:16 | !ltsp-manager
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| 05:16 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 05:17 | <achyut> also let me know whcih is the best desktop to install LTSP
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| 05:19 | <achyut> also let me know whcih is the best desktop to install LTSP
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| 05:19 | <alkisg_web> It says that in the page, read the page. It's best to use MATE. It also has a link to download the cd.
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| 05:20 | <achyut> ok
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| 05:21 | Thank you
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| 05:28 | <alkisg_web> You're welcome
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| 14:26 | <markit> hi, is not strictly ltsp related but I need for a script to modify /etc/cups/cups-browsed.conf. Is there in GNU/Linux a command to modify config files that are key=value or key value? And if the key is not found, add the "key value" pair automatically?
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| 14:26 | btw, cupsd.conf has 'key=value' while cups-browsed.conf is 'key value' (space)!
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| 14:43 | <||cw> markit: of hand I don't know, one usually does those things with awk and/or sed though
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| 14:43 | a more general and active linux-focused channel would probably be a better place to ask
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| 14:49 | <alkisg> markit: afaik, the cupsctl command that I told you yesterday parses and modifies that file
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| 14:53 | <vagrantc> alkisg: so, ltsp-manager is now waiting in NEW: https://ftp-master.debian.org/new.html
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| 14:54 | <alkisg> I saw it! Cool!
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| 14:55 | <vagrantc> some things are waiting a few months, hopefully we'll be luckier than that :)
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| 14:55 | <alkisg> Haha
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| 15:11 | <fzimper> Hi! Any tips on how to run ltsp-manager from a fat-client? ltsp-remoteapps doesn't work
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| 15:12 | <vagrantc> interesting use-case :)
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| 15:13 | <fzimper> Well, should be a pretty common one, don't you think so?
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| 15:13 | <alkisg> fzimper: did you enable ltsp-remoteapps in lts.conf?
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| 15:13 | !epoptes
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| 15:13 | <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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| 15:13 | <alkisg> epoptes.org/doc/fats or something, there's documentation on how to run remoteapps there
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| 15:13 | <fzimper> Yes. I can run e.g. firefox using remoteapps
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| 15:13 | Or Chromium, Thunar
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| 15:14 | <alkisg> Ah
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| 15:14 | Run remoteapps xterm then
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| 15:14 | And launch ltsp-manager from there
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| 15:14 | And see if you get any errors
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| 15:14 | <fzimper> Mousepad seems to be tricky. Understandibly it's always the complex ones that cause trouble ;-)
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| 15:14 | let me try
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| 15:18 | <alkisg> (documentation for epoptes is in http://www.epoptes.org/documentation/fat-clients)
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| 15:18 | <fzimper> https://pastebin.com/r4fQH2Cv
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| 15:19 | <alkisg> fzimper: sudo nano/usr/share/polkit-1/actions/*ltsp-manager*.policy
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| 15:20 | And play with the "allow_admin_keep" etc entries; put them to "yes" if you have to,
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| 15:20 | save file and retry, no reboots necessary
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| 15:20 | * alkisg waves for now, will read irclogs later | |
| 15:20 | <fzimper> ok. Epoptes works fine by just executing 'ltsp-remoteapps epoptes'
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| 15:22 | Interesting, the server almost came to a halt now. Memory usage increasing. Mousepad (s. above) consuming all of it
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| 15:28 | I'll look into the policy stuff later on. For now I tried to run "sudo ltsp-manager" in xterm. That seems to work.
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| 15:30 | <vagrantc> huh
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| 15:34 | <markit> alkisg: cupsctl works fine, but not for /etc/cups/cups-browsed.conf only for cupsd.conf, that is the one to modify with "BrowseRemoteProtocols none"
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| 15:35 | alkisg: but in general, with my setup scripts I often have the need of modify some .conf file, since now I've used sed, but seems strange that no one has created a "general purpouse" tool
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| 16:01 | <vsuojanen> http://wiki.ltsp.org/wiki/Locating_Speedy_Solutions_In_Finance
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| 16:03 | <sutula> Trying to set up a new LTSP server (old one is ancient). Started down the Ubuntu 17.04 server path and eventually got that working by hand (ltsp-build-server and manual install of packages).
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| 16:03 | Was guided by this channel to use 16.04 and ltsp-manager, per the bot instructions.
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| 16:03 | I've been all over the pages starting here http://wiki.ltsp.org/wiki/Ltsp-manager and here https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 16:03 | <vsuojanen> i was given this in search results and it didn't work ^^^
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| 16:03 | <sutula> I must be missing something very basic, maybe in the network hardware layout? I can't get my thin client to mount the NBD filesystems.
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| 16:03 | The mount command is:
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| 16:03 | /sbin/nbd-client [server IP] -N /ltsp/adm64 /dev/nbd0 -swap -persist -systemd-mark
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| 16:03 | Yet the server exports only swap and /opt/ltsp/amd64
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| 16:04 | * sutula thought he saw a bug report by vagrantc some time ago related to NBD, but was hoping the channel had some better solutions. | |
| 16:05 | <sutula> Also, I have not seen any instructions on how to configure my DHCP server, so have adapted from what I used to use ages ago. Maybe this is the issue?
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| 16:08 | <vsuojanen> sutula: are you first time asking this here after starting you adventure to setup a new LTSP server?
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| 16:09 | <sutula> vsuojanen: A few weeks ago I was given the guidance to try 16.04 and ltsp-manager here
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| 16:10 | <vsuojanen> did you ask the bot or someone here?
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| 16:10 | <sutula> Asked the channel, someone in the channel answered thru the bot
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| 16:13 | That was on 8/28
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| 16:18 | <vsuojanen> I have been very long away from this channel. I don't know where to continue guiding. the DHCP server should not need anymore LTSP specific configurations as it should not be initially setup on the LTSP server
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| 16:22 | the ltsp-pnp instructions guide you to a setup which uses dnsmasq and external dhcp server.
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| 16:25 | <sutula> Maybe I am struggling because the old ltsp server/clients are coexisting on the same network. I am trying to take one client and boot from the new server until I have it working, and not take down the old clients yet.
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| 16:26 | I have been able to do that by changes in my DHCP server's config file, but maybe I am messing up the stuff dnsmasq would have done?
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| 16:26 | * sutula will study dnsmasq | |
| 16:27 | <vsuojanen> if you have enough resources on some machine setup a quick virtual environment and start with http://wiki.ltsp.org/wiki/Ltsp-manager
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| 16:29 | <sutula> Thanks for the repointer...when I checked about a week ago, steps 5 and 6 pointed to empty pages. They have content now.
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| 16:32 | <vsuojanen> yeah. it may be the issue. np
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| 16:32 | <sutula> This makes me think I should re-update my server and try again...perhaps things have been fixed last few days.
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| 16:36 | <vsuojanen> from wiki that the services on LTSP server itself would not have changed that much from ltsp-pnp instructions. http://wiki.ltsp.org/wiki/Ltsp-manager/Initial_setup
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| 16:37 | but Ltsp-manager, it should be well tested if it is published and recommended here
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| 16:39 | <sutula> So far, my symptoms point to confusion between my main DHCP server and dnsmasq that ltsp-manager configures. Your comments have at least given me somewhere to look. Thanks!
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| 16:40 | <vsuojanen> sutula: one thing with the setup is almost every time boot the LTSP server after the client image is updated
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| 16:44 | I mean after the client image is first time created. The purpose of course is that LTSP server should not have to be rebooted after image updates. but that time is when you setup your server or change the server ip
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| 16:47 | <sutula> OK, thanks! Looking at what ltsp-manager has done with dnsmasq config file, I can see that my old/main DHCP server is stepping on values. Starting there and will try again.
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| 18:02 | <alkisg> sutula: don't use non-lts ubuntu versions with ltsp, I don't support them
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| 18:02 | E.g. 17.04 has broken a nbd package
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| 18:02 | To fix it you'd need to remove the initial / in the nbd server configuration file
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| 18:03 | <sutula> alkisg: OK, saw that in a bug report, but dropping back to 16.04 anyway.
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| 18:03 | <alkisg> Use 16.04.3. MATE is prefered, but lubuntu should work fine too.
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| 18:03 | <sutula> alkisg: Current problem is that existing DHCP server seems to conflict with what you're trying to do with dnsmasq
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| 18:03 | <alkisg> If they both send the same settings, how can they conflict?
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| 18:04 | If your existing dhcp is broken, dnsmasq can't override it
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| 18:04 | So it's broken setup, not broken method...
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| 18:04 | <sutula> Ahhh...so copy the dnsmasq settings into main DHCP server's config file?
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| 18:04 | <alkisg> No
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| 18:04 | 3 dhcp servers:
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| 18:04 | (1) dhcp that doesn't send boot filename, e.g. router
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| 18:05 | (2) real dhcp, e.g. isc-dhcp, that sends a boot filename
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| 18:05 | (3) proxydhcp, that doesn't send lease, but ONLY boot filename
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| 18:05 | * sutula has case 2 | |
| 18:05 | <alkisg> (1) and (3) mix fine
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| 18:05 | <sutula> :(
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| 18:05 | <alkisg> (2) doesn't need (3), it works fine alone
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| 18:05 | <mmarconm> alkisg: i asked bedore, but i had to go, so 'what is ltsp-manager for ?'
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| 18:05 | <alkisg> If you have (2) and (3), then (2) is the one that sends the settings
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| 18:05 | <mmarconm> before*
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| 18:06 | <alkisg> So (3) is ignored
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| 18:06 | So, if you have 2+3 and it's not working, the problem is in the (2) settings, they're wrong
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| 18:06 | I.e. not related to dnsmasq at all;they just need to be fixed
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| 18:06 | mmarconm: it's the easiest method to install ltsp; did you read the docs?
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| 18:07 | * mmarconm didnt read the docs, shame on you mmarconm =( | |
| 18:07 | <alkisg> !ltsp-manager
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| 18:07 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 18:07 | <alkisg> Be glad that devs took the time to document things. It's rare! Honor that by reading them! :P :D
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| 18:07 | <mmarconm> i always install from terminal
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| 18:08 | <alkisg> You can install ltsp-manager by apt install ltsp-manager, from the terminal
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| 18:08 | <mmarconm> aahahhah Ok i want to make a video teaching how to install ltsp, from new guys, portugues of course
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| 18:08 | <alkisg> That then will solve a lot of issues so that you don't need to search/apply the fixes yourself
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| 18:08 | <mmarconm> here almost nobody knows ltsp
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| 18:10 | <sutula> alkisg: Still a little confused...if I have isc dhcp server running, seems I have to copy settings into there, e.g.:
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| 18:10 | # The next-server setting decides which machine is the ltsp server
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| 18:10 | next-server 192.168.1.109;
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| 18:10 | # Copied from alfred2: dnsmasq conf file (should not be necessary):
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| 18:10 | filename "/ltsp/amd64/pxelinux.0";
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| 18:10 | option root-path "/var/lib/tftpboot/";
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| 18:10 | Is there also a "dhcp-option" setting necessary?
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| 18:11 | <alkisg> sutula: I'm not using isc-dhcp so I don't know its settings
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| 18:11 | next-server usually points to the tftp server, which should be the ltsp server
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| 18:11 | root path is /opt/ltsp/amd64
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| 18:11 | Not /var/lib/tftpboot, that's wrong there
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| 18:12 | There's an example dhcpd.conf in the ltsp package...
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| 18:12 | <sutula> alkisg: I am seeing the above settings in dnsmasq's config file written by lts-manager
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| 18:12 | <mmarconm> on my configuration, i delete this line next-server 192.168.1.109; and
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| 18:13 | <alkisg> sutula: dnsmasq is a tftp server there
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| 18:13 | isc-dhcp isn't a tftp server
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| 18:13 | Since you're using (2), why are you reading dnsmasq config which is ignored?
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| 18:13 | Read isc-dhcp docs, not dnsmasq docs...
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| 18:14 | ltsp-manager configures dnsmasq for tftp, dns and proxydhcp and sometimes dhcp too
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| 18:14 | Don't just blindly try to copy settings...
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| 18:14 | Read the dhcpd.conf that is shipped by ltsp for isc-dhcp
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| 18:14 | <sutula> alkisg: Right, just looking there to see what directories should be used in the isc dhcp server
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| 18:15 | <alkisg> look at the dhcpd.conf example, not at the dnsmasq.conf example
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| 18:15 | for the directories to use
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| 18:15 | <sutula> ok
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| 18:17 | <mmarconm> alkisg: just for purpose of testing, i build ltsp on docker machine and works pretty well
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| 18:20 | <sutula> alkisg: I'm afraid I'm even more confused...sorry. I have installed ltsp-manager per your web pages. There is no /opt/ltsp/amd64 subdirectory on the LTSP server, only an /opt/ltsp/images/
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| 18:22 | <mmarconm> sutula: u must to create one
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| 18:23 | when on create a ltsp image this subdirectory ll be create
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| 18:24 | <fzimper> alkisg: feedback on the policy settings for ltsp-manager which you recommended to change. If I set them to 'yes' all works fine, though obviously that's a bit insecure. Any other setting doesn't work.
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| 18:29 | <sutula> mmarconm: Oh good grief, I hadn't considered use of magic. I should have known alkisg was a wizard.
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| 18:29 | Works perfectly with root path of /opt/ltsp/amd64
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| 18:31 | * mmarconm ll stay quite | |
| 18:36 | <alkisg> sutula: dhdpc.conf example comes with ltsp-server-standalone, not with ltsp-manager, but glad you solved it ;)
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| 18:36 | fzimper: it's not insecure, please file a bug report so that I update them
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| 18:36 | !ltsp-bug
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| 18:36 | <ltsp> ltsp-bug: To file a bug report for upstream LTSP, go to https://bugs.launchpad.net/ltsp
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| 18:39 | <alkisg> sutula: /opt/ltsp/amd64 is mentioned in /etc/nbd-server/conf.d/ltsp_amd64.conf, the header line there
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| 18:39 | That's what root-path is, when we're talking about nbd
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| 18:39 | And we put it that way so that it's the same dhcp configuration as nfs
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| 18:44 | <sutula> alkisg: OK, by the way, this is the first time I've tried fat client (old server was too much trouble to configure); ltsp-manager is making it waaaaay easy. Awesome work!
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| 19:09 | <alkisg> Cool! :)
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| 19:46 | <mmarconm> alkisg: how i install ltsp-manager ?
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| 19:46 | is avaliable on repo ?
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| 19:46 | !ltsp-manager
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| 19:46 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 19:48 | <mmarconm> i get it xD
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| 20:11 | <sutula> alkisg: Should you have time for a last question, I'd really like to stick with ltsp-manager but do have a few older i386 clients. Is there some manual steps I can take to build i386 images while the server and most clients are amd64, or is it an all-or-nothing?
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| 20:27 | <alkisg> sutula: if you read the docs, you'll see that it says "use i386 if you have both amd64 and i386 clients"
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| 20:27 | If you don't have any machines with 16+ GB RAM, there's no reason to use amd64
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| 20:27 | (with 16+ GB RAM there's a bug where i386 gets too slow)
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| 20:28 | Now, if for some reason you don't want that, yes you can build an i386 chroot, but it's not a very well documented feature of ltsp
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| 20:29 | ifcpu64 of pxelinux allows you to automatically select the correct chroot, and ltsp has some code for that somewhere
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| 20:29 | <sutula> alkisg: I did see it in the docs, but wondered whether it was reasonable to supplement i386 by hand
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| 20:29 | I'm guessing it's dicey given fat client support?
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| 20:29 | <alkisg> Do you have machines with 16+ GB RAM?
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| 20:29 | <sutula> I don't, so i386 can work
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| 20:29 | <alkisg> Right
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| 20:30 | You only get 5% less speed, and gain some free RAM, so it's not a significant difference
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| 20:30 | So just install the server with i386 live cd
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| 20:30 | <sutula> It's a "start install all over", but should go faster now that I've been through it 3 times :)
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| 20:30 | <alkisg> Hehe
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| 20:30 | <sutula> thanks much for the consulting!
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| 20:30 | <alkisg> np; i should start charging for that :P
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| 20:30 | * alkisg waves | |
| 20:31 | * sutula would be glad to send beer money | |
| 20:32 | <||cw> you also only have the speed penalty if the clients have more than 4GB ram
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| 20:32 | <alkisg> The 5% speed is 64bit processing vs 32bit processing, faster math... not related to ram
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| 20:33 | The 16+ GB RAM slowness issue is because of bad highmem managing in the kernel
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| 20:33 | (5% is very rough approximation; in real math apps it can be much more, in office apps less, etc)
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| 20:33 | * alkisg waves for real now :) | |
| 20:35 | <||cw> 5% is the 0.0001% of apps that actually take advantage of it, which is maybe gaming and CAD and scientific processing
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| 20:36 | PAE is the main performance penalty in 32bit
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| 23:52 | <dgroos> hello!
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| 23:53 | I’m working to get my fat 16.04 clients to authenticate to AD and I think I’m most of the way there.
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| 23:55 | The server is running on a 2 NIC setup. I can ssh into the server from a computer on the WAN (ssh ADuser@server.ip.address) and it works!
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| 23:58 | When I login via ssh, it creates the user on the server, but with none of the folders e.g. ~/Desktop. However, then when I log in sitting directly at the server, it logs in and creates that home directory structure. Nice!
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