IRC chat logs for #ltsp on irc.freenode.net (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?
04:07
<alkisg>
!seen mistik1
04:07
<ltspbot>
I have not seen mistik1.
04:07
<alkisg>
...at least for 10 years or so :D
04:20
<dsj2>
Thanks, alkisq.
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
14:08
The broadcast stops expecially when you open the KDE menu (bottom left corner, the "start" Windows like button)
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?
14:38
markit: try with a client: right click in epoptes, open terminal, root locally,
14:38
and: add-apt-repository ppa:ts.sch.gr; apt install xvnc4viewer; apt purge xtigervnc-viewer (or however else that one is called),
14:38
and then try broadcasting once more
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
14:42
but let's see as you suggested to be sure
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
14:43
<alkisg>
markit: really, ipxe tftp needs 15 seconds for you?
14:43
<markit>
don't know if pxe boot is slow because I use "-rr" bound
14:43
<alkisg>
It shouldn't need more than 5 seconds...
14:43
<markit>
with -rr bound?
14:43
<alkisg>
I'm using the default bond settings in ubuntu
14:44
<markit>
btw, is it possible to setup dnsmasq to try http boot and "fallback" ipxe?
14:44
<alkisg>
It needs less than 5 seconds with 2 gigabit nics
14:44
You can do that from inside ltsp.ipxe
14:44
I.e. you can tell dnsmasq to boot with tftp as usual, and load ltsp.ipxe which is small,
14:45
and then inside ltsp.ipxe, you can try http and fall back to tftp if it fails
14:45
In general I'm more available in the mornings when I"m at the office
14:45
E.g. around 10:00 greek time...
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 :))
14:46
<alkisg>
We've described that setup in github issues
14:46
You can start by reading the issues there
14:46
<markit>
https://github.com/ltsp/ltsp/issues/75 ?
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
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
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
14:50
<alkisg>
markit: https://epoptes.org/documentation/global-groups/
14:50
<markit>
ehm :)
14:50
<alkisg>
;)
14:51
markit: btw, what about apache?
14:51
If you're looking for a single-port config, where's the difficulty in that?
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
14:53
<alkisg>
Well that should work too
14:53
<markit>
everything seems to be ok (tcpdump) except the error Idontememberwhichone
14:53
<alkisg>
Are you talking about your home setup, or about the lab setup?
14:53
<markit>
and was not due to permission
14:53
<alkisg>
Can I see now?
14:53
<markit>
well, let me start ltsp VM server and a pair of clients, I was just updating documentation at the moment
14:54
<alkisg>
I think the server would be enough
14:54
As long as http server works, http boot will also work...
14:56
!vnc-edide
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
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
14:57
<alkisg>
OK let's do it tomorrow morning...
14:58
markit: you really just need `apt install apache` and `ln -s /srv/tftp /var/www/html`
14:58
You don't need to edit any configuration files at all...
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
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 /`
15:48
alkisg, I get the error
15:48
Could not locate vmlinuz and initrd.img in /srv/ltsp/images/x86_64.img
15:49
and indeed LTSP fails to boot because of this
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)
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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