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


Channel log from 11 November 2011   (all times are UTC)

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00:36
<petres>
Running on Ubuntu 10.4, I changed the subnet for my ltsp segment by editing /etc/network/interfaces and /etc/ltsp/dhcpd.conf
00:37
My clients still boot, but when I try to login they always fail, saying they can't communicate with the server.
00:37
Is there something in the chroot that I need to edit as well?
00:39
<alkisg>
!ltsp-update-sshkeys
00:39
<ltsp>
alkisg: ltsp-update-sshkeys: If you changed your server IP, you need to run ltsp-update-sshkeys, and if you're using NBD (Ubuntu) you also need ltsp-update-image afterwards
00:39
<petres>
good evening alkisg
00:39
thanks for the answer
00:39
must be a FAQ ;-)
00:39
<alkisg>
:)
00:39
Indeed
00:39
'night all
00:40
<petres>
g'night.
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00:56
<quietone>
newbie here. I'm logged onto the server machine and the session has hung. How do I restart it without affecting the users on the thin clients?
01:07
<petres>
quietone, you might try logging in via one of the clients, using a different ID, and once logged in, run 'sudo pkill -u <ID you used on the server>'
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01:11
<sbalneav>
Evening all
01:12* vagrantc waves to sbalneav
01:12
<vagrantc>
sbalneav: libpam-sshauth hit debian testing today
01:12
<sbalneav>
Oh, cool!
01:12
<quietone>
petres, thanks. how do I find the ID you refer to?
01:12
<sbalneav>
And guess what. I got libnss-sshsock going today
01:12
<vagrantc>
sbalneav: ooooh!
01:13
<sbalneav>
passwd and group handling done.
01:13
<petres>
good evening sbalneav; that's good news
01:13
<vagrantc>
sbalneav: now we'll have to plug it all together and watch the fireworks
01:13
<sbalneav>
I'm going to spend the evening doing the "soft" bits; README, man pages, etc. and try to release a
01:13
package by the end of the night.
01:13
<petres>
quietone, you don't know the ID you used to login on the server console?
01:14
quietone, does it appear in the top right hand corner of the screen, on the panel?
01:14
<quietone>
petres, yes, I don't know what you mean by 'ID'
01:14
<vagrantc>
sbalneav: i might be able to try and package it up tomorrow
01:14
<petres>
login ID
01:14
<vagrantc>
sbalneav: or maybe sunday/monday
01:15
<quietone>
petres, oh. I see.
01:15
<petres>
just don't use that ID when you login via the client or you'll kick yourself off when you run the pkill command.
01:17
my ltsp interface is still setting itself as the default gateway for the server, so I end up with two GWs.
01:17
Anyone have any suggestions as to how to get it to not do that?
01:17
There's nothing set in /etc/network/interfaces.
01:18
It also manages to get a lower metric than the outside nic (eth0).
01:20
<sbalneav>
vagrantc: OK, I'll work real hard tonight. :)
01:22
<vagrantc>
sbalneav: heh :)
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01:23
<jammcq>
hello friends
01:23* vagrantc waves to jammcq
01:23
<vagrantc>
and heads out...
01:24
<jammcq>
was it something i said?
01:24
<petres>
hi jammcq
01:24
<jammcq>
hey petres
01:24
<petres>
busy place here tonight
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01:38
<petres>
In ubuntu, how do I tell if an interface is being managed by Network Manager?
01:38
<Gadi>
sbalneav: just tested libnss -> congrats! you rock!
01:38
<petres>
tell via the command line I mean
01:39
<Gadi>
petres: unless you specify an interface in /etc/network/interfaces, network manager is managing it
01:39
<jammcq>
sbalneav is what we call "scarey smart"
01:39
<petres>
Gadi, both my interfaces are specified in /etc/network/interfaces
01:39
<Gadi>
are they set as "auto" or "manual" ?
01:39
<petres>
But something keeps setting a default route with the ltsp nic as the gateway.
01:40
They're both set auto
01:40
perhaps that's the trouble
01:40
<Gadi>
no, that's fine
01:40
did you restart network manager?
01:40
sudo service network-manager restart
01:42
<petres>
No, but I recently rebooted (for another reason)
01:42
<Gadi>
sbalneav: found a bug
01:42
sbalneav: getent group lists the groups but not the members
01:42
<petres>
but network-manager *is* running
01:43
<Gadi>
petres: why not just tell network manager not to set the ltsp nic as the default gw?
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01:43
<Gadi>
in fact, the ltsp nic most likely doesn't need a gateway defined at all
01:44
<petres>
Gadi, right, it shouldn't. I can't figure out why it is.
01:44
<Gadi>
what is network manager set to?
01:44
static?
01:44
<petres>
Let me check...
01:44
<Gadi>
with a gateway?
01:45
:)
01:48
<sbalneav>
Gadi: I've fixed that today.
01:48
Preparing to pusg
01:48
<Gadi>
sbalneav: could be that it is because the group names have spaces in them. It doesn't seem to like that with a "getent group 'Domain Users'"
01:48
<sbalneav>
push.
01:49
<Gadi>
ah
01:49
ok
01:49
<sbalneav>
No, I didn't implement group member functionality until today.
01:49
here, lemme push.
01:51
version 15 pushed.
01:52
<jammcq>
sbalneav: Scotty !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
01:52
<Gadi>
still no go for me
01:52
hmm...
01:53
<petres>
Gadi, NM just lists ifupdown(eth0) and ifupdown(eth1), and neither is editable, so I assume that means NM isn't managing either.
01:53
<sbalneav>
Gadi: with the spaces in the names?
01:53
<Gadi>
ah
01:53
nm
01:53
there it goes
01:53
<sbalneav>
I can see now that that's going to be a problem
01:53
<Gadi>
one issue still
01:53
<sbalneav>
yeugh.
01:53
<Gadi>
no, it works
01:53
<sbalneav>
jammcq: hey hey
01:53
really?\
01:53
<Gadi>
one issue left is doing: getnet group "Domain Users"
01:54
<sbalneav>
right.
01:54
not sure how I'm going to handle that one. :(
01:54
<Gadi>
but getent group works well
01:54
let me see how you do it now
01:55
<sbalneav>
We'll
01:55
um
01:55
wait
01:55
might be easy.
01:55
one sec\
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01:56
<Gadi>
snprintf (command, sizeof command, "getent group %s", name)
01:56
maybe that %s needs quoting?
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02:00
<sbalneav>
yeah, just tried that, not working.
02:00
WHAT KIND OF SICK TWISTED INDIVIDUAL PUTS SPACES IN GROUP/USER NAMES?!?!?!
02:01
bleh.
02:01
it's going to be popen that's eating things.
02:01
grrr
02:01
<Gadi>
romm@romm-desktop:~/bzr/libnss_sshsock$ ssh -S /tmp/gadi 192.168.0.50 getent group 'Domain\ Users'
02:01
Domain Users:*:513:lew,diane,jana,guest,romm,junwoo
02:01
that works
02:01
:)
02:05
<sbalneav>
sbalneav@eris:~/Source/libnss-sshsock/src$ getent group "bad\ name"
02:05
getent group 'bad\ name'
02:05
bad name:x:1050:sbalneav,grval,fuse
02:05
yeah
02:06
bleh, I'll have to look into how popen's implemented to find out how exactly I have to quote/escape
02:06
<Gadi>
so, the question is, where is the space being dropped? when it is read into a char or in the sprintf?
02:08
<sbalneav>
\o/
02:09
<Gadi>
success?
02:09
<sbalneav>
try rev 16
02:10
<Gadi>
yay
02:11
<sbalneav>
pretty sexy, if I do say so myself.
02:11
<Gadi>
what did you change?
02:12
<sbalneav>
bzr diff :)
02:12
<Gadi>
I already pulled
02:12
<sbalneav>
sing qoutes on name
02:12
dub qoutes in ssh line
02:13
back on in two seconds, moving to a different computer
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02:14
<jammcq>
let's rearrange all the furnature while he's gone.
02:15* Gadi has honey-do chores todo
02:15* Gadi leaves an open beer for sbalneav
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02:16
<sbalneav>
Back
02:17
Gadi: seems to be working?
02:20
<jammcq>
I think gadi left for a bit
02:20
had some chores to do
02:20
<petres>
Gadi left to do chores
02:20
<sbalneav>
Ah, oh
02:20
kay
02:21
Spaces in names. <shakes head>. What's the world coming to? First they wanted spaces in filenames. Now spaces in group names.
02:22
IT'S A MADHOUSE!!! A MAAAAAAAADHOOOOOOOOOUUUUUUUUUSE
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02:22
<jammcq>
well....
02:23
<sbalneav>
http://www.youtube.com/watch?v=TQME8mx4DMo
02:23
<jammcq>
hahahaha
02:25
<petres>
Oh, my! So, spaces in name leads to a takeover by the apes? And here I'd been informed that it's started by hunting for alzheimers cures.
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02:33
<quietone>
hi, any ideas why 'sudo pkill -u <name>.' would not work? I couldn't kill the processes either.
02:33
<petres>
Aha! If I shutdown NetworkManager, then ifdown eth1, then ifup eth1, it comes up & does not set itself as a default GW.
02:34
quietone, if you run 'ps -ef' and grep for the ID used on the server, does it find any processes owned by that ID?
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02:36
<sbalneav>
quietone: zombie process
02:36
quietone: http://en.wikipedia.org/wiki/Zombie_process
02:41
<petres>
Do most people who are using ltsp on Ubuntu use NetworkManager or not?
02:42
<sbalneav>
I don't. My interfaces are always statically defined.
02:43
IMHO, for a server, you always want the interfaces statically defined in /etc/network/interfaces, or equivalent.
02:43
<quietone>
petres, I used 'ps -au <ID>' getting lots of processes. I recall (had too reboot server) 'firefox <defunct>'
02:45
sbalneav, thanks. I always thought 'kill -9' would kill anything.
02:49
<sbalneav>
Not zombies, maaaan, zombies EAT YOUR BRAINZ
02:49
or something like that.
02:49
Gahh, I hate writing manpages.
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03:03
<petres>
ok, with a sample size of one (sbalneav), out goes network-manager
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03:06
<quietone>
we used adduser to make users but some won't log in on some thin clients (seems random to me) but the first one always works everywhere. Did we miss something in creating users?
03:08
<sbalneav>
Possibly. How exactly did you create them?
03:11
<quietone>
sbalneav, sorry we aren't 110% sure if it was adduser or useradd. if it matters system->admin->users and groups doesn't work either. It display data but only the close button does anything.
03:17
sbalneav, the person who did that bit thinks it was 'adduser'
03:19
<sbalneav>
home dirs exist in /home?
03:19
have you tried ssh'ing into those accounts from another computer?
03:19
That may provide a clue.
03:22
also, it's helpful to check their .xession-errors file.
03:24
<quietone>
sbalneav, I'll look into that
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03:43
<quietone>
sbalneav, yes the dirs exist in /home, can ssh into them all. Errors in .xsession-errors
03:55
Gee, I am overwhelmed by the errors. Not sure where to start
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04:14
<sbalneav>
Gadi: check out #18 when you get back; fixed a couple of bugs
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04:29
<sbalneav>
Meh, enough hacking for the night
04:29
Off to bed.
04:29
night all
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05:22
<quietone>
thanks for your help today. Couldn'
05:23
Couldn't send this earlier as the server locked up, again.
05:23
;-)
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16:33
<matrix3000>
is it possible on boot to have a fat client modify a file and put its hostname in it?
16:33
like in a specific place on that file
16:34
and then relaunch an application
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16:36
<alkisg>
Sure, it's easy, what exactly do you want? Btw, did you manage the "send a message to clients" thing?
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16:39
<matrix3000>
na, i just did a jabber broadcast
16:40
same result since everyone uses jabber
16:40
how would i do that alkisg, cause i want to try puting teh active zabbix client on the fat clients so the fat clients do more load themselves
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16:40
<matrix3000>
basically i need on boot the systems hostname to be copied in place of localhost on /etc/zabbix/zabbix-agentd.conf
16:41
<alkisg>
!lts.conf
16:41
<ltsp>
alkisg: lts.conf: http://manpages.ubuntu.com/lts.conf
16:41
<alkisg>
See the RCFILE directive there
16:42
<matrix3000>
ok, and then i could have a bash file be ran basically?
16:43
<alkisg>
Yup
16:44
<matrix3000>
now i guess i need to figure out how to do it in bash
16:44
now will that RCFILE run that script in sudo permissions?
16:45
cause /etc/zabbix/zabbix-agentd.conf needs sudo rights to modify it cause its 755 permissions
16:45
<alkisg>
Yes
16:46
<matrix3000>
ok sweet
16:50
do i need to do anything special to call a $HOSTNAME?
16:50
from the system
16:54
sed -i 's/#Hostname=localhost/Hostname=$HOSTNAME/g' $f
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16:57
<alkisg>
If HOSTNAME isn't available, you can find it with hostname=$(HOSTNAME)
16:57
Sorry the opposite
16:57
HOSTNAME=$(hostname)
16:57* alkisg is in some seminar
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17:02
<matrix3000>
crap didn't work
17:02
it didn't grab the variable
17:02
it just did a Hostname=$(hostname)
17:03
ill ask in bash channel
17:15
ok got the one liner script to do it
17:15
so i need to make a .sh file now right
17:15
and put that in rc
17:28
aaaaah
17:28
didn't work
17:28
the script itself should work
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17:55
<matrix3000>
ok script works but my RC_FILE01=/etc/init.d/zabbix-fatclient isn't running
17:56
do i have to put sudo in the command?
17:56
oh im dumb
17:57
RCFILE_01 not RC_FILE01
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19:03
<matrix3000>
alkisg, that script and modification worked
19:03
:)
19:11
<vagrantc>
!seen sbalneav
19:11
<ltsp>
vagrantc: sbalneav was last seen in #ltsp 14 hours, 42 minutes, and 32 seconds ago: <sbalneav> night all
19:12* vagrantc wonders how sbalneav did on the libnss-*ssh* stuff
19:19
<bill_c>
!seen rjune
19:19
<ltsp>
bill_c: I have not seen rjune.
19:21
<Gadi>
vagrantc: its working nicely
19:22
pull down his latest
19:22
<vagrantc>
from where?
19:23
<Gadi>
lp:~sbalneav/ltsp/libnss_sshsock
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19:23
<vagrantc>
Gadi: gracias
19:23
<Gadi>
de nada
19:23
you will need to libtoolize and autoconf and friends
19:23
and be sure to configure --prefix=/usr
19:24
(I had issues with it in /usr/local
19:24
<vagrantc>
Gadi: with my last package, i used dh-autoreconf, and it all happened by magic :)
19:24
<Gadi>
ooh
19:24* Gadi does not know the ways of the force
19:25
<vagrantc>
i've got to be useful for *something* now and again :)
19:26* Gadi looks forward to tackling the bigger task of putting all the pieces together with a dm
19:26
<Gadi>
but, that will not be today...
19:26
:)
19:26
cheers
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19:36
<vagrantc>
hrm. libnss-sshsock is not nearly as simple as libpam-sshauth :(
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20:11
<vagrantc>
Gadi: any idea what files should be in the package?
20:12
http://pastebin.com/tXbiQnKb
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20:21
<Gadi>
you don't need testnsslib
20:22
that is just a test file so you don't need to test it with your nsswitch.conf
20:22
in terms of the libs, you prolly only need the .so*
20:22
in the regular package
20:23
maybe the .a and .la in a -dev package?
20:23
<vagrantc>
Gadi: yeah, i got a lintian warning about the -dev stuff ... though it's small enough that it might not make sense for a separate package
20:24
<muppis>
I got proved my boss today to start study could we use LTSP as base for diskless kvm host. :)
20:24
<vagrantc>
Gadi: but everything is there?
20:24
<Gadi>
to test, add "sshsock" in your nsswitch.conf (for passwd, group), then set NSS_SSHSOCK_SOCKET and NSS_SSHSOCK_HOST env vars
20:24
vagrantc: I believe so
20:25
<vagrantc>
Gadi: so, configure as above, and establish an SSH master socket (like LDM does?)
20:25
<Gadi>
yeah
20:25
<vagrantc>
Gadi: so the end-user can set those env vars and get different results?
20:25
<Gadi>
so, if you "ssh -M -S /tmp/foo -f -N server"
20:26
then: export NSS_SSHSOCK_SOCKET=/tmp/foo
20:26
and: export NSS_SSHSOCK_HOST=server
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20:26
<Gadi>
you should be able to getent passwd
20:26
and have fun
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20:30
<vagrantc>
Gadi: thanks, will try!
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20:51
<matrix3000>
if I want something to start when the user logs in, lets say i need a file deleted for google chrome
20:52
i need to do a /etc/xdg/autostart/seomthing.desktop file right
20:52
once i learn how to type something
21:07
<vagrantc>
Gadi: well, it mostly seems to work. though some groups don't show up
21:08
<Gadi>
such as?
21:09
<vagrantc>
Gadi: kvm is on the server, but not in the ltsp chroot ... it doesn't show up when i do getent
21:10
Gadi: or is that the low uid/gid that it doesn't pass across?
21:10
<Gadi>
yeah, it may be that
21:11
<vagrantc>
but what if we need those low uid/gid?
21:11
<matrix3000>
can i specify multiple LDM_SESSION variables?
21:12
[00:11:25:93:CF:02] LDM_SESSION=/usr/bin/myloginscript
21:12
is in the man page, but I thought that LDM_SESSION was to set the session not run a script
21:13
<vagrantc>
matrix3000: i *think* it can do either, but i'd have to look at the code
21:14
<matrix3000>
vagrantc: thank you, I know that RCFILE_01 will run at boot, and now have zabbix on all the thin clients as a active local taking load off the server :)
21:15
it's not much but when you have 80 computers and the load is on a single server, that adds p
21:15
up
21:15
<Gadi>
vagrantc: I am not sure why we have a MINUID - maybe it is similar to ldap?
21:17
<vagrantc>
Gadi: oh, look, i'm ROOT!
21:17
Gadi: that's my guess...
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21:20
<Gadi>
thats a fair guesss
21:20
gotta run
21:20
ciao
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21:20
<matrix3000>
can i have new lines in a lts.conf
21:20
like blank lines
21:21
for separating and organizing definitions
21:22
or can i do something like TIMESERVER=192.168.2.1 #Configures timeserver for LTSP client
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21:23
<vagrantc>
matrix3000: you can definitely have blank lines
21:23
matrix3000: and comments ... not sure about comments at end of line ... nothing like experimentation :)
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21:25
<matrix3000>
haha
21:30
<vagrantc>
wow. i managed to crash my thin client trying to test libpam-sshauth
21:31
well, testing that and libnss-sshsock
21:41
<matrix3000>
why is SCREEN_07 the default?
21:43
<vagrantc>
X typically landed on tty7 for most distros for ages
21:43
<matrix3000>
ah ok
21:43
<vagrantc>
that's recently changing a bit, maybe, so perhaps it's a historical relic
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21:43
<matrix3000>
well it's valid here in my case so
21:47
only bad thing is
21:47
other shells provide a root oO
21:48
i ment tty*
21:48
so like i did a SCREEN_02=shell, and it gave me a root prompt
21:48
which me no like lol
21:49
<vagrantc>
that's what it's supposed to do ... what are you *trying* to do?
21:50
matrix3000: you want a login on the server, or the thin-client itself?
21:50
<matrix3000>
basically a non ldm shell
21:50
that still requires a login
21:50
<pscheie>
matrix3000, that root shell is only on the client, btw, not the server
21:50
<vagrantc>
and where do you want the shell to be logged into?
21:50
<matrix3000>
oh i got you
21:50
<vagrantc>
matrix3000: typically, there are no users on the thin client
21:50
<matrix3000>
ahhhhh
21:51
<<< just realized that
21:51
<vagrantc>
so presenting a login there would not be useful
21:51
<matrix3000>
lol
21:51
yea finally makes sense
21:51
now how would i make a screen for a ssh into the ltsp server itself
21:52
<vagrantc>
matrix3000: SCREEN_02=ssh
21:53
<matrix3000>
i need to put that on the man page then prolly dont i
21:53
cause ssh isn't listed
21:53
haha
21:54
<vagrantc>
suppose so
21:54
<matrix3000>
Currently, possible values include: rdesktop, xdmcp, shell, ldm, startx (depreciated), and telnet
21:54
<vagrantc>
matrix3000: basically, everything in /opt/ltsp/i386/usr/share/ltsp/screen.d/ should be a valid SCREEN_NN option
21:54
<matrix3000>
oh i dont have access to change that
21:54
ah ok
21:54
ill check that
21:55
<vagrantc>
i'll fix it in the upstream docs
21:55
<matrix3000>
ok sweet
21:55
guess we need to add kiosk menu and ssh in there
22:00
<vagrantc>
matrix3000: name to credit for noticing?
22:00
<matrix3000>
Eric Anderson
22:01
there's also a few others like the FAT_RAM_THRESHOLD=(VALUE in MB)
22:01
which is for fat clients, someone finally put it in wiki but its not in the man page
22:01
<vagrantc>
matrix3000: anything you know about that's missing would be great
22:01
<matrix3000>
that's all i think i got for now
22:02
wait
22:02
theres
22:02
<vagrantc>
matrix3000: committed the SCREEN_XX update
22:02
<matrix3000>
NFS_HOME= and NFS_HOME_OPTIONS=
22:02
ok awesome
22:02
thank you
22:02
<vagrantc>
fatclient isn't even documented
22:03
<matrix3000>
haha
22:04
testing the # after a definition right now
22:04
works
22:05
you can put # after a definition
22:08
<vagrantc>
LTSP_FATCLIENT and FAT_RAM_THRESHOLD committed and pushed
22:10
<matrix3000>
sweet
22:11
how is your guy's experience with java on ltsp
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22:15
<vagrantc>
matrix3000: also briefly documented NFS_HOME*
22:16
for NFS_HOME* and LTSP_FATCLIENT and FAT_RAM_THRESHOLD it could use some more detail ... but at least it's there.
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23:14
<matrix3000>
how do you want me to write the detail, cause I can explain those functions
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23:31
<jvin>
Just curious, a while back I saw direction that X11 is being replaced with Wayland at some point which will impact ssh graphical and ltsp .. or is wayland capable of ltsp use?
23:35
<alkisg>
LTSP is more than just remote X
23:35
E.g. nothing will change about just booting a client and before starting X
23:35
Or, with fat clients, we don't care if they have X or wayland or whatever, we just offer them a networked disk, authentication, common /home etc
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23:36
<alkisg>
About the X part, if it gets really out of the picture, I guess some other elegant way of remote desktop will emerge
23:36
Spice, nx, freenx, something wayland-specific, dunno, it's too early to judge
23:37
But it will, as people need that. And we'll just use it in LTSP
23:37
*freerdp
23:38
It might even offer session suspend + resume, which we don't (normally) have currently
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