LTSP 5 is in minimal maintenance mode
The new LTSP is hosted at https://ltsp.github.io

IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 28 March 2019   (all times are UTC)

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10:59
<cristiano^204-36>
Oi, alguém fala Português por aqui?
10:59
<alkisg>
!english
10:59
<ltsp>
Error: "english" is not a valid command.
10:59
<alkisg>
!en
10:59
<ltsp>
Error: "en" is not a valid command.
11:01
<alkisg>
cristiano^204-36: sorry, english only...
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13:10
<stacyh>
Hi - we have an LTSP server which hangs. We have tried increasingmeomory, adding another processor even changing the server for anew and better model - but we still get issues of hanging
13:11
we have also bonded the network cards in case that was the bottleneck - not much change
13:12
today we have an error CIFS VFS: cifs_mount failed w/return code=-6
13:30
<alkisg>
stacyh: does it use most of its ram?
13:31
How much ram, how many clients, thin or fat etc?
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14:04
<stacyh>
Hi
14:04
We have 64GB ram
14:04
I dont think the RAM is the problem - we have 56 thin clients
14:05
<alkisg>
What is the output of `free` while the users are connected?
14:05
It's pretty easy for a thin client to need 4 gb on the server
14:05
If they open a few tabs on the browser, libreoffice etc
14:05
<stacyh>
i have noticed that it never uses the swap space. Why would that be ? Is the RAM
14:05
I will check that while the users are connected
14:06
at the moment they are not
14:06
I also noticed that is seems to hang on to the logins even when the user has logged out
14:06
is there a way to automatically clear old user sessions
14:07
<alkisg>
Which distro/version/desktop environment?
14:07
<stacyh>
Ubuntu 16.04
14:07
Lubuntu desktop
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14:07
<alkisg>
Have you considered switch to ltsp fat clients? How much ram do your clients have?
14:07
*switching
14:08
<stacyh>
we have very old thin clients
14:08
i think 2gb some and 4gb others
14:08
i have just ordered 19 new devices
14:09
school policy is to reduce reuse recycle'
14:09
unfortunately we are the dustbin for PC's which have been retired elsewhere
14:10
<alkisg>
stacyh: 2 gb clients should DEFINATELY work as ltsp fat clients
14:10
So you're running your setup wrong...
14:10
!fatclients
14:10
<ltsp>
fatclients: Nowadays LTSP supports thin and fat clients. They are both diskless and netbooted from the same LTSP chroot, but while thin clients run the session on the server and transfer the screen, fat clients run the session locally with their own CPU/RAM, thus performing amazingly better. See also !ltsp-pnp and https://help.ubuntu.com/community/UbuntuLTSP/FatClients
14:13
<stacyh>
So its a configuration that we change in the ltsp config files ?
14:14
<alkisg>
Yes
14:14
In a normal setup, it's just one line
14:15
<stacyh>
OK
14:15
<alkisg>
But if you have a "thin chroot", you'd need to create a "fat chroot" instead
14:15
!install
14:15
<ltsp>
install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
14:15
<alkisg>
This is the "correct" installation method; the same chroot covers both thin and fat clients
14:15
<stacyh>
can I simply edit my existing installation
14:15
<alkisg>
Sure
14:17
<stacyh>
so it would be the FAT_CLIENT_DESKTOPS line that does it ?
14:17
Just checking the existing config - 1 Minute
14:18
<alkisg>
What's the output of this?
14:18
ls -l /opt/ltsp/*/usr/share/xsessions | nc termbin.com 9999
14:19
<stacyh>
is it normal that that file doesnt exist at all
14:19
i have a dhcpd.conf and 1 other file in the /etc/ltsp directory
14:19
<alkisg>
sudo ltsp-info | nc termbin.com 9999
14:19
<stacyh>
just a second let me try the command
14:21
what is the nc bit
14:21
<alkisg>
it puts the result to the internet, for us to see
14:22
or you can use pastebin:
14:22
!paste
14:22
<ltsp>
paste: To avoid channel flooding, please upload text longer than 3 lines to http://paste.debian.net. Don't forget to paste the resulting URL here.
14:22
<mwalters>
stacyh: are you seeing "speed for <interface> changed to 0" on the physical console when the server hangs?
14:22
for each bonded interface
14:23
(on the server's console)
14:23
or something very similar... not sure if that's the exact message
14:23
and not the bond interface itself, one line for each physical interface
14:23
<stacyh>
no
14:24
<mwalters>
ok, nvm... that's been my issue with my server hanging since 18.04
14:24
seems to be anytime systemd updates
14:24
<stacyh>
we are getting cifs-mount failed w/return code =-6
14:25
at the moment
14:25
also our disk space is at 97%!!! on /home
14:25
<mwalters>
when it hangs? you're mounting windows shares?
14:25
<stacyh>
no we have shares on another linux server running samba as we also login from windows clients not only the lubuntu thin clients
14:26
its a karoshi server from the linuxschools
14:26
<mwalters>
I have a 16.04 disk server @ home that seems to hang w/ windows clients access it's samba shares
14:27
windows 10 client specifically... I don't recall it happing with windows 7 clients... but it's been a while since I had any of those at home
14:27
s/it's/its
14:27
I never did figure it out... and resolved the issue by not using samba
14:27
I think it was something with the NIC, oddly enough
14:28
but it would hardfreeze, console completely unresponsive
14:28
<stacyh>
i think alkisg was on the right track
14:28
<mwalters>
zombie sessions and OOM?
14:29
YMMV with 2gb fat clients... esp if using chrome
14:29
<stacyh>
whats that
14:30
I dont understand the acronymn
14:30
<mwalters>
oh, sorry... "your mileage may vary"... meaning "it may or may not work in your specific case"
14:30
I have a poor habbit of assuming everyone is english as a first language... and also american ;)
14:30
<stacyh>
is it kosher to share email addresses here ?
14:31
could I ask alkisg to email me ?
14:31
<mwalters>
there's an email list
14:31* mwalters digs
14:31
<mwalters>
!mailing-list
14:31
<ltsp>
Error: "mailing-list" is not a valid command.
14:31
<mwalters>
!mail
14:31
<ltsp>
I do not know about 'mail', but I do know about these similar topics: 'manual'
14:31
<mwalters>
hmm
14:31
<stacyh>
will the forum block my email address
14:32
<mwalters>
not sure
14:32
<stacyh>
africaanew@gmail.com - alkisg - can you email me please
14:32
<mwalters>
https://sourceforge.net/projects/ltsp/lists/ltsp-discuss
14:32
there's the mailing list. There's several folks active on it
14:57
<alkisg>
stacyh: i'm back
14:57
i haven't read the logs yet
14:57
you can mail me at alkisg at gmail if you want professional help
14:59
<stacyh>
thank you - I have done so
14:59
<alkisg>
OK great will reply in a bit
15:01
stacyh: can we try this?
15:01
!vnc-dide
15:01
<ltsp>
vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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15:38
<BuddyButterfly>
hi
15:38
I have an ltsp running on xenial now for a long time and it works perfect!!
15:39
Now I would like to upgrade that system to bionic. Is this easily possible?
15:39
I mean with the do-release-upgrade and nothing else?
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15:45
<josefig>
hello, good morning guys.
15:45
<quinox>
hi there
15:45
<josefig>
BuddyButterfly, I did that the do-release-upgrade but I did all the installation process again, even the image (because I'm using fat clients)
15:47
<BuddyButterfly>
josefig: That sounds not too bad. Yes, I am also using fat clients and would need to re-generate the image. But why reinstall? Wouldn't it keep the config as it was?
15:49
<josefig>
BuddyButterfly, I meant these steps http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu.
15:51
<BuddyButterfly>
josefig: yes, but that is all done as I would like to upgrade from a running ltsp server. Do I have to redo all of this?
15:53
<alkisg>
BuddyButterfly: yes, because those steps will also add the greek school ppa, which do-release-upgrade removes
15:53
And you need it to get fixed ltsp versions (the stock one doesn't work)
15:53
<josefig>
BuddyButterfly, as I said, I did the upgrade and didn't work I think it was because xenial uses isc-dhcp-server and this new guide works with dnsmasq
15:54
hi alkisg, i see the ltsp.org website is live again.
15:54
<alkisg>
Well actually this guide exists since 10.04... with dnsmasq
15:54
But not at that url
15:54
Yeah well it runs a bit, breaks a lot...
15:54
<josefig>
oh I see
15:54
<alkisg>
I hope I'll move it to github withing a few months
15:55
<BuddyButterfly>
ah, ok, then all there is do the upgrade, re-enable the ppa and upgrade again?
15:55
<josefig>
nice
15:56
<BuddyButterfly>
I am not using isc-dhcp nor dnsmasq on the ltsp. this does my router.
15:57
<alkisg>
In general, it's best to let the router give ips, and the ltsp server/dnsmasq give the boot information
15:57
(proxydhgcp)
15:57
<BuddyButterfly>
ah, sry, dnsmasq is running, of course.
15:58
<alkisg>
Then yeah like you said it
15:58
<BuddyButterfly>
alkisg: yeah, know. But I have have a central boot config with menu etc. This also handles ltsp.
15:58
<alkisg>
do-release-upgrade, add ppa, update
15:58
<BuddyButterfly>
alkisg: cool.
15:59
<alkisg>
BuddyButterfly: what kind of router has boot config menus?
15:59
(i'm asking because handling uefi will require a bit more intelligent menus; I'll do that for 20.04; just noting the use cases now)
16:01
<BuddyButterfly>
alkisg: oh sorry, I am using an own router also based on ubuntu.
16:01
it uses isc-dhcp-
16:01
<alkisg>
Ah sure ok then
16:02
You should be easily able to translate whatever i put in dnsmasq, to isc-dhcp...
16:02
<BuddyButterfly>
no stock router.
16:02
<alkisg>
So not an issue
16:03
<BuddyButterfly>
alkisg: yes, this should not be a big deal. just has to be converted...
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17:55
<alkisg>
vagrantc: Jim said he's ok with moving ltsp.org to github; we just wait for feedback from Ron now
18:07
<vagrantc>
oh good
18:07
github, whee.
18:07
github supports markdown for writing web pages/wiki, so that's cool by me :)
18:16
<alkisg>
Yeah markdown is somewhat ok for wikis
18:16
It doesn't support many necessary things, but eh, we'll lower the docs quality
18:17
<vagrantc>
you mean improve them by actually having them ?
18:17
:)
18:17
<alkisg>
E.g. no "warning!" sections, no image alignement...
18:17
The initial wiki that knipwim set up was good enough
18:17
<vagrantc>
i've surely done those things...
18:17
<alkisg>
But there were no contributors
18:17
<vagrantc>
well, dunno about warning
18:17
yeah, we do seem to have a lack of contributors
18:18
and some more active people just create their own sites rather than contribute back...
18:18
<alkisg>
I think 99% of the open source users are just consumers; only the 1% shares stuff :)
18:18
<vagrantc>
i think we'd be happy if we saw 1%
18:19
<mwalters>
am I part of the 1% yet?
18:19
did I finally "make it"?
18:19
<alkisg>
Sometimes they're not sure of their docs quality, so they just document what they know in their site, afraid of the "official docs" status
18:19
mwalters: :D sure, run `git log`,you'll see!
18:19
<mwalters>
oh, official docs... I tried once... and alkisg told me it was supposed to be that way ;)
18:20
<alkisg>
mwalters: if you're talking about the single page I maintain... write your own! :D
18:20
<mwalters>
lolol
18:20
<alkisg>
I really think that wikies are better managed when people maintain different pages
18:20
<mwalters>
probably
18:20
<alkisg>
The old ubuntultsp wiki became chaotic, I couldn't even maintain my own pages there
18:20
<mwalters>
narrow focus is easier in general... it's easier to be an expert in a narrow area, than adept in all
18:21
<alkisg>
Because many edited them and ...they weren't my pages anymore, I didn't know how to edit them after all the things the others did
18:22
Personally I can maintain < 10 pages per project; I welcome others to maintain different pages with more details and use cases, but I haven't seen anyone doing so for more than a few months
18:22
<mwalters>
I've been... dealing with printers D:
18:23
and cell phones...
18:23
My neck is sore from all these hats...
18:23
(not sure if that phrase translates, but I can explain if needed)
18:25
<vagrantc>
mwalters: translates pretty well to me :)
18:25
a nice extension of hat-wearing phrases i'm already familiar with, anyways
18:25
<mwalters>
I hate that turn of phrase so much ;)
18:25
<vagrantc>
aww.
18:26
<mwalters>
Nobody wants your hats, keep those hats to yourself ;)
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22:36
<admin^LE05>
MOI DE KIZILA
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