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


Channel log from 2 June 2016   (all times are UTC)

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01:42
<sbalneav>
vagrantc, alkisg: configdir= command line option added.
01:43
Check latest push
02:02* vagrantc checks
02:05
<vagrantc>
sbalneav: compiles fine! :)
02:06
<sbalneav>
good
02:06
And yeah, libnss-external needs to be linked with the -lutil library
02:06
lemme check why...
02:08
No, it's not libnss-extrafiles that needs -lutil, it's libpam-external
02:08
<vagrantc>
sbalneav: not that it's a problem, but ./src/util.c: GPL (v2 or later)
02:08
<sbalneav>
nss-external doesn't rely on anything else.
02:08
ok, lemme fix it
02:08
<vagrantc>
sbalneav: i think it is itself a shared library
02:09
<sbalneav>
yes, same as pam-external
02:09
<vagrantc>
(the or later) gives plenty of flexibility
02:09
<sbalneav>
No, I'll fix it so it's the same as the others.
02:09
<vagrantc>
for some reason, pam-external doesn't trigger the security warnings
02:09
maybe it's got an exclusion for pam modules
02:09
<sbalneav>
consistency is the hobgoblin of little minds :D
02:12
vagrantc: libnss-external updated
02:16
<vagrantc>
sbalneav: these are the lintian issues it mentions: https://paste.debian.net/713342/
02:16
dunno if they make more sense to you... i think it's a packagers job
02:18
sbalneav: but those packages are nearly ready for me to test ... then i'll just need the various scripts
02:21
<sbalneav>
Hm, not sure I know how to fix those either. :(
02:21
If you can poke someone you know, and they tell you I need to do something, lemme know, and I can add it.
02:22
I can't provide an option for a "configdir=" like I can for ...
02:23
ok, from now on, we're going to refer to libpam-external as lpe and libnss-external as lne :D
02:23
So I can't provide a configdir= option for lne like I can for lpe
02:29
<vagrantc>
so that's pretty much stuck with the hard-coded directory?
02:29
<sbalneav>
Yeah, you can either modify a config file, or change some links in a dir
02:29
6 of one, 1/2 dozen of the other
02:30
Nothing's cast in stone, if we come up with something better before freeze...
02:30
;)
02:31
<vagrantc>
not sure why, but i think a one-liner configuration file might be a nice option
02:32
/etc/nss-external.conf and/or /etc/nss-external/nss-external.conf ... something like that
02:32
<sbalneav>
ok, well, I can look at that tomorrow
02:32
<vagrantc>
maybe alkisg has *opinions*
02:32
<sbalneav>
I assume all it will contain is *just* a path
02:33
i.e. contents of /etc/nss-externel.conf is "/somepath"
02:33
<vagrantc>
sbalneav: right ... or confdif=/path/to/nss-external/dir
02:33
<sbalneav>
Then I gotta write a parser :D
02:33
<vagrantc>
just in case you ever find a reason to use something else
02:33
fair enough
02:34
<sbalneav>
We'll start with just the path :D
02:34
If we need more options, I'll write the parser later :D
02:34
<vagrantc>
early enough that breaking compatibility won't hurt anyone
02:35
sbalneav: so, i get the impression this is together enough for me to start testing this... ? :)
02:37
<sbalneav>
Yes.
02:38
you can easily test lne
02:38
grab that nssexternal-multifile script
02:39
ln -s /path/to/multifile /etc/nss-external/passwd
02:39
ln -s /path/to/multifile /etc/nss-external/group
02:39
mkdir /var/lib/nss-multifile/passwd
02:39
mkdir -p /var/lib/nss-multifile/passwd (sorry)
02:39
mkdir -p /var/lib/nss-multifile/group
02:40
Then, just drop any number of passwd(5) or group(5) formatted files in the var/lib dirs
02:40
so:
02:40
goofybutt:x:6666:6666:A goofy user:/home/goofybutt:/bin/bash
02:40
put that in /var/lib/nss-multifile/passwd/goofybutt
02:41
(name doesn't matter)
02:41
getent passwd goofybutt
02:41
et voila
03:01
<vagrantc>
i have to configure /etc/nsswitch.conf, too
03:05
<sbalneav>
ah, right
03:05
put "external" at the end after compat
03:05
<vagrantc>
but that's just adding "external"
03:05
right
03:05
<sbalneav>
Did it work?
03:05
<vagrantc>
yup!
03:06
<sbalneav>
\o/
03:08
<vagrantc>
so libpam-external is a bit more involved
03:08
<sbalneav>
little
03:08
:)
03:08
And I'm about ready for bed :D
03:09
<vagrantc>
but only slightly more complicated than libpam-sshauth, no?
03:09
<sbalneav>
Got time tomorrow?
03:09
<vagrantc>
not sure, but hopefully :)
03:09
<sbalneav>
ok I'll be on all day
03:09
I'll write up a testing doc first thing when I get in in the morning.
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04:52
<rac>
i try configurastion LTSP Thin Client on ubuntu 16.04lts, but on ltsp client booting error TFTP
04:52
can help me ?
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06:04
<quinox>
what error precisely?
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08:34
<railr>
hi guys
08:35
I'd like to ask how I can put make my terminals use 16bit colour and lower resolution on an ubuntu server?
08:36
<alkisg>
!lts.conf
08:36
<ltsp>
lts.conf: (#1) http://manpages.ubuntu.com/lts.conf, or (#2) lts.conf manpage is available in the ltsp-docs package
08:36
<alkisg>
railr: the manpage is there, but by default the color depth *is* 16 bit for thin clients
08:37
<railr>
okay thankyou alkisg :)
08:38
<alkisg>
The directives are X_COLOR_DEPTH=16, or X_SMART_COLOR_DEPTH=False
08:39
But you don't need them as 16 bit is the default in Ubuntu
08:39
For lower resolution, you need XRANDR_MODE_0="1024x768"
08:43
<railr>
okay, I'm adding that to /lib/boot/tftpboot/ltsp/i386/lts.conf
08:43
is that correct?
08:44
<alkisg>
It's /var/lib/tftpboot, not /lib/boot
08:44
Which ubuntu version are you using?
08:44
<railr>
sorry, yes made a mistake
08:44
<alkisg>
And which desktop environment
08:44
<railr>
ubuntu server 16.04
08:44
well that's what I'm deciding on
08:44
<alkisg>
What are your client specs, cpu/ram?
08:45
<railr>
let me get those for you
08:46
we're using a system 3650 m5 as the server and we're running about 4 virtual servers.
08:46
off of it
08:47
<alkisg>
!learn setup as Please describe your setup so that we can propose better solutions for you. Server and client CPU (exact model) and RAM, how many clients, gigabit switch or not, desired desktop environment etc.
08:47
<ltsp>
The operation succeeded.
08:48
<alkisg>
So if you have this cpu, it's a really good server: http://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E5-2640+%40+2.50GHz
08:48
<railr>
yes the server is very good. Let me get the client specs for you
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09:15
<railr>
I'm going to change some config options in lts.conf and let you know how it goes.
09:16
right now the thin client spec is pretty average, 2gigs ram, cpu is a n2808 - 2 cores 1.58ghz each
09:18
<alkisg>
http://www.cpubenchmark.net/cpu.php?cpu=Intel+Celeron+N2808+%40+1.58GHz
09:19
With 983 score, it's best to use those as ltsp fat clients, not thin clients
09:19
I suggest trying this how-to:
09:19
!ltsp-pnp | echo railr:
09:19
<ltsp>
railr: ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
09:53
<railr>
thanks alkisg
10:01
<alkisg>
You're welcome
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19:53
<sbalneav>
Hmm, so pam_external works to log into lightdm, but the nss_external causes it to fail.
19:53
Gotta figure out why.
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21:03
<sbalneav>
hmmm, something's up with nss-external. This evening, I think I'll re-write it from popen to using simple fork/exec and pipes
21:08
<quinox>
just wondering, does your project help LTSP+TOTP in any way?
21:09
<sbalneav>
Well, seeing as how I'm an LTSP developer.... I'd hope so :D
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21:09
<sbalneav>
With any luck, the stuff I'm writing will be the basis for LTSP6
21:11
<quinox>
sure, but I'm wondering about TOTP specifically
21:12
We've got it enabled for nearly everything right now, and LTSP is one of the last remaining systems that don't require it
21:12
<sbalneav>
Not sure what totp is
21:12
<quinox>
ah sorry
21:12
time-based one-time password
21:12
when logging in you have to provide a username, password and TOTP
21:13
the TOTP changes every 30 seconds, and it's based on a shared secret value
21:13
<sbalneav>
Is it a pam module?
21:13
<quinox>
yes
21:14
<sbalneav>
Then yes, it will help, since we're planning on ditching ldm and just using lightdm, with the pam modules I'm writing.
21:14
So you'd just integrate that into the pam stack if you wanted it.
21:15
<quinox>
sweet
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22:31
<sbalneav>
vagrantc: There's some kind of bug with nss-external
22:31
with the login program, I can login with pam-external and nss-external
22:32
with lightdm I can login with pam-external and files
22:32
I can't with pam-external and nss-external
22:32
So I'm still debugging :(
22:32
<vagrantc>
oh well
22:33
sbalneav: so, we could not use nss-external and switch back to libnss-extrafiles if needed?
22:38
<sbalneav>
right
22:38
but I ain't licked yet :D
22:41
<vagrantc>
of course!
22:41* vagrantc is just trying to keep a mental image of how all this is pieced together and what parts replace what