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


Channel log from 21 July 2014   (all times are UTC)

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12:21
<ncd209>
hey where are the settings stored that tell the client what to run on the screens
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13:00
<muppis>
In lts.conf, usually placed to /var/lib/tftpboot/ltsp/<arch>/lts.conf
13:05
<ncd209>
ah yeah :) tnx forgot how to do it for a second be some time since i need to tinker with it
13:05
been
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13:06
<muppis>
:D
13:06
<ncd209>
I was curious as to what else you can run on the other available screens
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13:09
<muppis>
Never tested, but I think it could be possible run almost anything which runs in terminal.
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13:14
<muppis>
Almost lied. I've tested to run XBMC via that. To get X started was the tricky. Couldn't remember that anymore, because used after Raspberry Pi. :D
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14:09
<brianr>
good morning. i was looking at some old list archives and there was util called ltspinfo that you could use to remote reboot thin clients. does such an utility still exist?
14:10
it was like ltspinfo --host=thinclient --rebooot
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15:07
<alkisg>
!epoptes | echo brianr:
15:07
<ltsp`>
brianr: epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
15:07
<alkisg>
...you can reboot the clients through that, or do whatever else you want...
15:07
<brianr>
ok, ill check that out, ty
15:08
<||cw>
you can also just enable ssh and root pw or ssh key auth in the image...
15:08
but epoptes is nice
15:10
<brianr>
yes, i have ssh enabled. i wrote a script ... but i was hoping for something a little easier for me to explain to some less technical people
15:12
<||cw>
epoptes is the way to go then, all sorts of useful features
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17:45
<azltspit>
Hello, I am running Edbuntu 14.02 with LTSP and having an issue where Firefox is giving and error saying "Already Open", We read a few post and looks like one of the work around is to install another browser, so we installed Opera but it is also giving us the pop-up error, we can click Yes and it will open for all the thin clients, but is there any thing I can do to disable the pop-up or fix the issue?
18:10
<jammcq>
azltspit: are all of the users using the same user_id ?
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18:41
<bennabiy>
vagrantc: Howdy!
18:43
vagrantc: Where can I find the coding standards for ltsp? I am getting a little free time to work on the fat client auth issue, but I want to make sure I have my spaces and tabs and such set right.
18:47
<azltspit>
no all 15 are using different usernames
18:54
You did give me the idea to try and delete a few of the user accounts and re-create to see if it is something in their profile.
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19:11
<vagrantc>
bennabiy: ltsp-trunk/docs/common/CodingStyle
19:12
bennabiy: it's not much, but there it is
19:12
<bennabiy>
great! Thank you :)
19:16
Any clue on when we are going to update the room topic?
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19:24
<bennabiy>
vagrantc: I noticed that enslaver and cyberorg's merge requests are still pending for over a year...
19:25
<brianr>
fat client auth issue?! i have been trying to figure out why i cannot unlock the screensaver on fat clients ...
19:25
i am using ldap for auth
19:25
<bennabiy>
It is a matter of getting the ldap chroot to use ldap auth as well
19:26
<championofcyrodi>
brianr: i had the same issue, i was told to try and run the screen lock remotely, it didnt work so well for me...
19:26
so i used sssd
19:26
which integrates with PAM
19:26
then removed the gnome-screensaver package and installed xscreensaver
19:26
<brianr>
yes, i also saw a post about using sssd ...
19:27
<championofcyrodi>
unfortunately the "Lock" option in the unity menu will still use the gnome Lock, so i just tell my users not to use that.
19:27
lol
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19:30
<brianr>
ya that is not optimal. we are using xfce on the TC's so i just disable fat clients
19:30
<championofcyrodi>
yea, we had too much lag running opengl and other multimedia intensive applications w/ the thin client.
19:31
but bennabiy is correct, ultimately you'll spend a lot of time modifying the chroot.
19:31
however you can also modify the pam.d on the ltsp server to mkhomedirs and include .config and other distro specific user settings there.
19:32
<bennabiy>
I am working on a temp fix to get the chroot to generate a /etc/shadow entry for the fat client to use during the session, and then remove upon cleanup
19:32
<vagrantc>
we really need to figure out how to push the next generation LTSP stuff, but there hasn't been enough coordinated developer time and energy
19:32
<bennabiy>
vagrantc: I agree
19:32
<vagrantc>
as this is one of the main issues some of the proof-of-concept stuff for LTSP6 would solve
19:32
<championofcyrodi>
<- feels guilty
19:33
<bennabiy>
vagrantc: I am at a point where I need to do some more work on mint support as well, so I am going to be putting some hours towards that and the fat client auth issue
19:34
<championofcyrodi>
bennabiy, I think it comes down to the authentication integration with PAM, and not so much the shadow file specifically. My LTSP server does not have users in the passwd file either
19:35
it just has the sss daemon running, and thick client logins are successful.
19:35
if I recall correctly, sss stores passwords in a local cache
19:35
<bennabiy>
no, but check your fat client... does it put an entry for the current logged in user for /etc/passwd
19:35
<championofcyrodi>
lemme check.
19:35
<bennabiy>
this is something that ldm does
19:35
<championofcyrodi>
nope
19:36
<bennabiy>
makes sense.
19:36
cannot clone over an entry that does not exist
19:38
<championofcyrodi>
what is interesting is that even though I've installed sssd on the chroot (for xscreensaver to work), the gnome lock does not seem to work at all.
19:38
<alkisg>
championofcyrodi: are you using LDM, or some other DM like e.g. lightdm?
19:39
<championofcyrodi>
I wonder if there was just an empty shadow file... if maybe the order of 'files sssd' in resolv is causing the lock.
19:39
as far as i know, it's 'lightdm'
19:39
<alkisg>
The default in ltsp is ldm
19:39
<bennabiy>
ah, that is why
19:39
<championofcyrodi>
wait...
19:39
<alkisg>
LTSP doesn't yet work with other DMs
19:39
<championofcyrodi>
no thats on the desktops...
19:40
i'm using whatever came w/ 14.04 ~70 days ago when installing ltsp packages from the ubuntu repo w/ dhcp support
19:40
<alkisg>
That's the main goal of ltsp 6, to drop ldm and use pam, i.e. any DM
19:40
<championofcyrodi>
ah... then i'm using ldm
19:40
<alkisg>
LDM doesn't know about pam, sssd or anything else though
19:40
<bennabiy>
I am using ldm, and a fat client, and I have an entry in /etc/passwd for the user I just logged in as , using LDAP auth
19:41
<alkisg>
That's ldm: https://dl.stgraber.org/images/ldm-natty.png
19:41
<championofcyrodi>
@bennabiy: Perhaps it's the way my sssd is configured?
19:41
<bennabiy>
could be.
19:42
alkisg: what is the packaging for ldm recipes?
19:43
<alkisg>
bennabiy: do you mean this? https://code.launchpad.net/~ltsp-upstream/+recipe/ldm-trunk-daily
19:43
<bennabiy>
thank you
19:45
<championofcyrodi>
so i just verified that sssd works with NSS for passwd, shadow, groups and netgroups
19:45
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Deployment_Guide/Configuring_Services.html#Configuration_Options-NSS_Configuration_Options
19:47
looks like my thick client has a shadow file... just not the users
19:47
(same as passwd)
19:48
when i said resolv ealier, i meant nsswitch
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19:48
<bennabiy>
championofcyrodi: do you show the user in the passwd file?
19:48
<championofcyrodi>
no
19:49
just whatever users are installed on the chroot
19:49
and a shadow file to match
19:49
<bennabiy>
Hmm. So your system is doing something different than the default
19:56
<championofcyrodi>
yea. all users are authenticated with 'sss' in the NSS, which authenticates with sss daemon
19:57
so user dir permissions, groups, etc. are all respected, home folders are created on login... however there is nothing in passwd/shadow about the users
19:58
our normal desktop PCs are the same way, this allows users to use a ltsp client or desktop w/ the same credentials
19:59
(like your ldap auth)
19:59
<bennabiy>
yes, but mine makes a local entry in the /etc/passwd for the fat client user and yours does not
20:00
so something is different about the setup
20:00
<championofcyrodi>
and you're using sssd as well?
20:00
<bennabiy>
nope
20:00
<championofcyrodi>
so sssd is really just a service, the backend is a normal ldap server
20:00
<bennabiy>
straight ldap / libnss-ldapd
20:01
with nslcd
20:02
which currently works for authentication, but does not allow me to unlock screen.
20:02
<championofcyrodi>
Ah. The guy who chose sssd before I got here told me nslcd has had memory leaks in the past or something. I didnt really argue w/ him
20:02
<bennabiy>
could be
20:03
<championofcyrodi>
i noticed i have sssd option next to passwd and group, but not shadow inside nsswitch.conf
20:03
<brianr>
i am using nslcd ... it seems to have some random timeout issues
20:03
but otherwise it works ok, except for the fat clients
20:04
<championofcyrodi>
apparently i disabled gnome locking, now my screen just goes blank when i click "Lock" from the unity applet, but comes right back when i move my mouse.
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20:05
<championofcyrodi>
it was almost a month ago now, and I'm not sure i remember how to re-enable the lock to try adding sss to the shadow key in nsswitch.
20:05
I'm wondering if i just specify to use sss for the shadow file as well, if that will fix the screen lock issue i had
20:05
apparently sudo apt-get install sssd didnt add it in there for me
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20:49
<bennabiy>
alkisg: do you remember where ldm sets the /etc/passwd file?
20:51
<vagrantc>
bennabiy: it's in the ltsp-localapps hooks
20:51
<bennabiy>
ah, thank you
20:51
<vagrantc>
bennabiy: /usr/share/ldm/rc.d/
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20:52
<bennabiy>
which is actually from the ltsp source, not from ldm?
20:52
<vagrantc>
bennabiy: though it's in the ltsp-trunk source package, as it's a featue that ltsp adds to ldm.
20:56
<bennabiy>
great. Well, I am out of time for today, but I will be back at it tomorrow.
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