IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 14 September 2020 (all times are UTC)
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| 03:47 | <dsj2> Does anyone have contact info for mistik1?
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| 04:07 | <alkisg> !seen mistik1
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| 04:07 | <ltspbot> I have not seen mistik1.
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| 04:07 | <alkisg> ...at least for 10 years or so :D
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| 04:20 | <dsj2> Thanks, alkisq.
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| 04:20 | Last I heard, he was heading home to see his family in Jamaica.
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| 14:08 | <markit> alkisg: I've fixed the vnc problem with a workaround, the "-noxdamage" parameter, that slows the client refresh but at least does not crash. Maybe there are other parameter that can be fine tuned to regain some performance. xvnc4viewer made no difference
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| 14:08 | The broadcast stops expecially when you open the KDE menu (bottom left corner, the "start" Windows like button)
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| 14:09 | Wondering if you can detect Plasma desktop and adjust Epoptes behaviour on the fly, probably you don't want to add "-noxdamage" for everyone
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| 14:27 | <alkisg> markit: does it work with xvnc4viewer?
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| 14:38 | markit: try with a client: right click in epoptes, open terminal, root locally,
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| 14:38 | and: add-apt-repository ppa:ts.sch.gr; apt install xvnc4viewer; apt purge xtigervnc-viewer (or however else that one is called),
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| 14:38 | and then try broadcasting once more
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| 14:42 | <markit> I'm not in the lab anymore, I try to reproduce with my VM. Yesterday I installed xvnc4viewer (that purges xtigervnc-viewer), recreated the ltsp image / (AFAIR) and tested, same error
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| 14:42 | but let's see as you suggested to be sure
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| 14:43 | btw, if you are around for some time, I would love to try apache for http boot, since I gain 15seconds in boot speed
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| 14:43 | <alkisg> markit: really, ipxe tftp needs 15 seconds for you?
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| 14:43 | <markit> don't know if pxe boot is slow because I use "-rr" bound
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| 14:43 | <alkisg> It shouldn't need more than 5 seconds...
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| 14:43 | <markit> with -rr bound?
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| 14:43 | <alkisg> I'm using the default bond settings in ubuntu
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| 14:44 | <markit> btw, is it possible to setup dnsmasq to try http boot and "fallback" ipxe?
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| 14:44 | <alkisg> It needs less than 5 seconds with 2 gigabit nics
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| 14:44 | You can do that from inside ltsp.ipxe
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| 14:44 | I.e. you can tell dnsmasq to boot with tftp as usual, and load ltsp.ipxe which is small,
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| 14:45 | and then inside ltsp.ipxe, you can try http and fall back to tftp if it fails
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| 14:45 | In general I'm more available in the mornings when I"m at the office
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| 14:45 | E.g. around 10:00 greek time...
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| 14:45 | <markit> alkisg: I've limited skill, I'm more and more aware of it. So "you can try" means nothing for me, I've no idea where to begin :))
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| 14:46 | <alkisg> We've described that setup in github issues
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| 14:46 | You can start by reading the issues there
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| 14:46 | <markit> https://github.com/ltsp/ltsp/issues/75 ?
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| 14:47 | is a long discussion and I remember was not sure about the "final right config", but nevermind, I will ask you tomorrow morning after doing some test to save your time as much as I can
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| 14:48 | btw, is it possible have a "global config" in epoptes with PC groups? I want to create one group for each row of PC, and one "all pc", so teacher can Wakeonlan whatever wants
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| 14:49 | but I would love to have "global" in some way, so I don't have to copy it for each teacher and remember to do it if I create one new in the future
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| 14:50 | <alkisg> markit: https://epoptes.org/documentation/global-groups/
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| 14:50 | <markit> ehm :)
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| 14:50 | <alkisg> ;)
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| 14:51 | markit: btw, what about apache?
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| 14:51 | If you're looking for a single-port config, where's the difficulty in that?
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| 14:52 | <markit> I've no idea, I didn't realize that http boot is the same as fetching a html page, so did not thought about being in a different path, so I configured apache for port 8000
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| 14:53 | <alkisg> Well that should work too
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| 14:53 | <markit> everything seems to be ok (tcpdump) except the error Idontememberwhichone
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| 14:53 | <alkisg> Are you talking about your home setup, or about the lab setup?
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| 14:53 | <markit> and was not due to permission
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| 14:53 | <alkisg> Can I see now?
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| 14:53 | <markit> well, let me start ltsp VM server and a pair of clients, I was just updating documentation at the moment
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| 14:54 | <alkisg> I think the server would be enough
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| 14:54 | As long as http server works, http boot will also work...
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| 14:56 | !vnc-edide
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| 14:56 | <ltspbot> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 14:57 | <markit> I've the test server VM, but is not configured for http boot right now, I was looking for my notes and "ltsp-http-noot-site.conf" example I have somewhere, if not deleted by mistake
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| 14:57 | <alkisg> OK let's do it tomorrow morning...
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| 14:58 | markit: you really just need `apt install apache` and `ln -s /srv/tftp /var/www/html`
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| 14:58 | You don't need to edit any configuration files at all...
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| 15:01 | <markit> alkisg: yes, for a test, but I prefer have a separate site for boot, so I can leave the default site for html tests and page
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| 15:02 | <alkisg> symlinks are easier to manage than "sites", but whatever you like :)
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| 15:02 | <alkisg> I use symlinks when I don't need special rights
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| 15:47 | <Guest24110> alkisg, I've just installed LTSP under 20.04 and there is a missing step in the installation guide
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| 15:47 | <danboid> After runnig `sudo ltsp image /`
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| 15:48 | alkisg, I get the error
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| 15:48 | Could not locate vmlinuz and initrd.img in /srv/ltsp/images/x86_64.img
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| 15:49 | and indeed LTSP fails to boot because of this
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| 15:49 | I followed every step on https://ltsp.org/docs/installation/
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| 20:13 | <markit> alkisg: apache2 and ln -s /srv/tftp/ltsp/ /var/www/html with the modification of /etc/dnsmasq.d/ltsp-dnsmasq.conf you did yesterday works, not I try with a specific site config file (don't like the ln stuff, sorry)
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| 20:32 | ok, done, created a ltsp-pxeboot-http.conf with only an "<VirtualHost *:80> Alias /tftp/ltsp /srv/tftp/ltsp/ </VirtualHost>", enabled a2ensite ltsp-pxeboot-http.conf and reloaded apache, works fine!
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| 21:10 | <markit> my bad, I'm not able to use apache without the ln you suggested, worked only because I forgot to remove the symbolic link :(
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