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


Channel log from 14 July 2014   (all times are UTC)

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12:55
<der_baer>
mm I want to install a new kernel (3.15) into my client image (ubuntu 12.04), It does not install in a clean way (update-grup fails as expectet since I did not mount any /dev into the chroot), after rebuilding the image the clients boots into to the initrd a i get a busybox. I did not change anything else and the kernel of the initrd is the new 3.15. Any idears where i could start digging for the bug or where i missed something?
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13:31
<WNxCyrius>
How do I go about limiting the desktop the client receives?>
13:32
<Hyperbyte>
WNxCyrius, what desktop?
13:34
<WNxCyrius>
basically I want the thinclients to receive only the browser, is this possible?
13:34
I tried and failed at the kiosk mode haha
13:35
fails during client built but gives no reason
13:35
<Faith>
der_baer, did uou restart the nbd service?
13:36
<WNxCyrius>
I am extra nooby, sorry
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13:39
<Hyperbyte>
WNxCyrius, you could always create your own session in /usr/share/xesssions/
13:40
And make some script that launches fluxbox as a window manager and then launches the browser
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13:49
<Hyperbyte>
Hey alkisg!
13:50
<alkisg>
Hi Heypey, hi all
13:50
<Hyperbyte>
How are you? :-)
13:50
<alkisg>
Trying to slow down my rythms to "vacations mode" :)
13:50
U?
13:50
<Hyperbyte>
Nice! Me, working my ass off, earning all the moneys. :)
13:51
<alkisg>
Meh women will eat all your money, no point in gathering a lot of it :D
13:52
<Hyperbyte>
Well, I guess I'll just have to make sure I spend it all before I meet Miss Right. ;-)
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14:22
<WNxCyrius>
lmao
14:23
Women typically spend it yes
14:23
:/
14:23
I made the mistake of giving one my Amazon Instant Video password
14:23
Woe unto me
14:24
Hyperbyte, you seem knowledgeable! Tips for increasing performance? It seems to be superbad
14:24
right now I am only testing with one client
14:25
but in the end if it fulfills the requirements I may end up throwing like 120 of these clients out
14:28
<der_baer>
Faith: yep several times now, I trying to start ltsp manuel to get some error messages but so far nothing real helbfull (the devices /dev/nbd0 get succesfull mountet within the the initrd )
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14:35
<der_baer>
aith but debuging within the initrd is kind of a pain in the ass (i had to install a editor by my self into to it there was not even an vi)
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15:11
<der_baer>
"Target filesystem doesn't have requested /sbin/init-ltsp" but there is /root/rofs/sbin/init-ltsp
15:12
the nbd mount is working, I dd /dev/nbd0 and i can read /sbin/init-ltsp
15:12
arg
15:15
<alkisg>
der_baer: cat /proc/cmdline
15:20
<WNxCyrius>
when setting up auto login do you have to configure all of the names?
15:21
<der_baer>
alkisg: http://pastebin.com/5ZJSgvZu
15:21
<alkisg>
der_baer: and that shows up on the client /proc/cmdline?
15:22
<der_baer>
alkisg: jep with an added BOOT_IMAGE=vmlinux in the end
15:22
<alkisg>
OK
15:22
Did the kernel install successfully?
15:23
(you were installing 3.5 in the chroot, right?)
15:24
<der_baer>
alkisg: we testing 3.15, it worked with a laptop and ubuntu 12.04 so the next step was to test it with our image, the installtion was sucessfull
15:25
<alkisg>
der_baer: wait, so it works ok with one client but not with another?
15:25
<der_baer>
alkisg: no it never worked with ltsp the laptop installtion is a standalone Ubtun12.04 installtion
15:26
<alkisg>
der_baer: let's get a step back
15:26
E.g. why aren't you using the stock kernel?
15:26
If you want support for newer hardware, why aren't you using the -trusty (3.13) kernel?
15:27
And, don't try to run ltsp-update-image if apt has failed, fix apt first
15:27
E.g. for grub, either uninstall grub from the chroot, or mount --bind /sys
15:28
So, I'd suggest that you install the linux-image-generic-lts-trusty kernel, and then purge all other ones
15:29
<der_baer>
alkisg: jep 3.13 is the next try but since 3.15 was working with the laptop i wantet to give it a try. the reason is new hardware witch at least needed the 3.6 kernel
15:30
otherwise i would have upgrade the courrent 3.2 kernel
15:30
to 3.5
15:30
<alkisg>
OK, apt-get install linux-image-generic-lts-trusty then
15:30
3.5 is lts-quantal, which has reached end of life
15:32
<WNxCyrius>
is this lts.conf file supposed to be in /var/lib/tftpboot/ltsp/<arch>? I am not finding it there
15:33
<alkisg>
You need to create one, it doesn't exist by default
15:33
It's necessary if you want to make the kiosk mode work
15:34
<der_baer>
alkisg: ok i give try this
15:35
alkisg: thanks so fare
15:35
<WNxCyrius>
ahhhh ok
15:35
do I have to make the entire thing with all the variables, or only the ones I want?
15:36
<alkisg>
[Default] on top, and only the ones you want
15:38
<WNxCyrius>
and a question about the accounts: Do I have to create each one I need? Can I just enable anonymous login somehow?
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15:59ben_nabiy is now known as bennabiy
16:07
<bennabiy>
alkisg: finally made it to vacation mode?
16:07
alkisg: how long does that last?
16:08
<alkisg>
bennabiy: 1.5 months... no, not yet, I'm still in panic mode
16:09
<bennabiy>
alkisg: Panic mode! what happened?
16:09
<alkisg>
Just too much work, nothing out of the ordinary
16:09* bennabiy nods
16:10
<bennabiy>
I guess there is just as much to do when the children are not there, as when there.
16:10
I am finally getting back to a stable place with my mint 17 install (discovered that 14.04 did not play nice with my hardware raid controller)
16:11
So I should be able to hack out some code soon.
16:11
<WNxCyrius>
you are on vaca for a month and a half?
16:12
<alkisg>
Yup, being a teacher has a few benefits...
16:12
<WNxCyrius>
ahhhhh gotcha
16:12
<alkisg>
...and a lot of shortcomings :D
16:12
<WNxCyrius>
such as dealing with students?
16:12
<bennabiy>
How many schools did you cover?
16:13
<WNxCyrius>
I was thinking about doing night teaching at the college
16:13
<alkisg>
270
16:13
<WNxCyrius>
are you doing like remote learning?
16:13
<bennabiy>
How many would you actively go to in a week?
16:14
<alkisg>
We mainly work from our offices, via helpdesk/remote support etc, so let's say 3...
16:15
<WNxCyrius>
is there a list of variables I can use on lts.conf somewhere?
16:16
I imagine the slowness/latent response is somewhat related to the amount of video its pushing so I wanna check that out
16:17
<der_baer>
alkisg: ok just to give you an update, 3.13 is working like a charme, and i learned again that that new is not equal to stable
16:18
<alkisg>
Cool
16:18
!lts.conf | echo WNxCyrius:
16:18
<ltsp`>
WNxCyrius: lts.conf: http://manpages.ubuntu.com/lts.conf
16:18
<bennabiy>
der_baer: that is the truth
16:18
<alkisg>
What's your networking speed?
16:19
<bennabiy>
alkisg: I cannot get epoptes set back up... I am getting an error that I cannot fetch certificate from server:789
16:20
<alkisg>
ls -lh /etc/epoptes
16:21
<bennabiy>
-rw-r--r-- 1 root root 0 Jul 14 12:17 server.crt
16:21
-rw------- 1 root root 916 Jul 14 12:17 server.key
16:21
hmm
16:21
should .crt be 0?
16:23
<alkisg>
No, you tried to fetch the certificate from/to the same machine, and overwrote it
16:24
Either purge/reinstall epoptes, or see the web site for how to recreate the certificate
16:24
google for: openssl site:epoptes.org
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16:24
<bennabiy>
got it.
16:24
How do you use epoptes with an ltsp-pnp image?
16:24
<linson>
hello
16:25
i am linson from india
16:25* bennabiy waves at linson
16:25
<bennabiy>
Welcome
16:25
<linson>
i have some quires about ltsp
16:25
thank you
16:26
<alkisg>
bennabiy: you just install epoptes and add the users to epoptes group
16:26
You don't need to do anything wrt certificates
16:26
!ask | echo linson:
16:26
<ltsp`>
linson: ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
16:26
<linson>
i am new to linux....since i googled how to use my old slow pc
16:27
ok
16:27
where is real lts.conf
16:27
i see that in more than 3 locations
16:27
<bennabiy>
alkisg: well and good, but how does that cause the fat clients to show up and know where the server is and such? do I need to manually edit the conf?
16:28
<alkisg>
bennabiy: the server is at "server", the well known name of the ltsp server
16:28
You don't need an lts.conf at all, no
16:28
linson: depending on your distribution, it usually is in /var/lib/tftpboot/ltsp/i386/lts.conf
16:29
<linson>
ok..i use edubuntu...there is one in above loctaion
16:29
so is that the real one
16:29
?
16:30
<alkisg>
Yes
16:30
<linson>
thank you
16:31
if i am running a thin client from ltsp sever...and power fails in thinclient is there any config to resume that specife TC enviornment?
16:32
<WNxCyrius>
I am pretty new to the linux
16:32
<linson>
server have ups , but not thin client
16:37
<der_baer>
linson: if you using nfs (under debian) for your chroot maybe (/var/cache/ltsp/, with nbd (ubuntu) not realy
16:38
<linson>
i use edubuntu14.4
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16:55
<bennabiy>
work_alkisg: quick question for you... I am trying to run the command: ltsp-update-image -c / and I am getting mount: mount point /tmp/tmp.M1nTy0uPCT/rofs/home/Public does not exist
16:55
Could not mount /tmp/tmp.M1nTy0uPCT/rofs/home/Public.
16:55
as the response
16:56
I had started the command earlier, but CTRL-C before it actually started generating anything, because I remembered that I did not have the client files installed yet. Now all I get is an error.
16:58
<linson>
sudo cmd to know mac address of connected client
16:58
?
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17:17
<gbaman>
anyone got any suggestions for setting up shared folders with LTSP?
17:22
<Ark74>
i did mount a shred folder on fstab
17:23
it does the trick, but i might not be the best way to do it. Since there may be a lot of issues
17:46
<bennabiy>
gbman what type of shared folder?
17:46
gbaman: ^
17:47
<gbaman>
bennabiy: a read only one for students
17:47
<bennabiy>
Local to LTSP server, or network?
17:47
<gbaman>
might have cracked it though
17:47
using samba and automounting it on boot
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17:47
<gbaman>
looks the simplest way and also allows compatibility with windows users which is a bonux
17:48
*bonus
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18:10
<Hyperbyte>
WNxCyrius, how are you liking Linux so far? :)
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18:13
<WNxCyrius>
Oh I like linux :)
18:14
I think I may have to introduce the thinclients to a windows server through a remote session though
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18:16
<WNxCyrius>
Basically I am trying to avoid the replacement of a hundred desktops haha
18:16
and pxeboot would make that even better
18:22
<Hyperbyte>
Why do you have to use a Windows server?
18:25
<WNxCyrius>
existing infrastructure blahblah
18:26
we use a cloud-based ERP system accessed through a browser that requires a windows OS to fucking print because they have plugins that are custom made for it
18:26
I am really upset about it haha.
18:28
<alkisg>
bennabiy: unmount any mounts left over at /tmp before re-running ltsp-update-image
18:30
gbaman: check LOCAL_APPS_EXTRAMOUNTS
18:30
WNxCyrius: LTSP does have support for windows RDP sessions
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18:38
<WNxCyrius>
yeah, its rdesktop, correct?
18:39
I saw that in there. Worried about the speed to connect to ltsp server then remote to windows server
18:47
<bennabiy>
alkisg: thank you
18:48
nothing mounted on tmp though
18:48
alkisg ^
18:49
It is like the /tmp mounting never took place, but there is a file somewhere saying that it did.
18:51
<alkisg>
WNxCyrius: it directy connects to the remote windows server. It's xfreerdp, not rdesktop.
18:52
bennabiy: if all else fails, try to reboot the server. If it persists, it has issues with submounts under /home.
18:52
<bennabiy>
alkisg: reboot in order. back shortly
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18:54
<WNxCyrius>
do you mean that it will skip the linux part altogether?
18:54
Know of a guide?
18:54
How does it handle local devices?
18:55
<alkisg>
WNxCyrius: it will boot linux, and it will connect to the windows server
18:55
At that time, there's no traffic to the linux server at all
18:56
Local devices are handled by linux, and forwarded appropriately with xfreerdp
19:02
<WNxCyrius>
solid
19:02
Will give that a shot
19:02
essentially, I need a windows only plugin to install to print from this system
19:03
setting up the printer itself was better than windows and used CUPS
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19:07
<gbaman>
alkisg: does LOCAL_APPS_EXTRAMOUNTS just mount an extra folder from the server to all clients read only? Documentation isn't massively clear..
19:07
<bennabiy>
alkisg: persisted after reboot
19:08
Is there a way to exclude a folder from /home ?
19:08
I have a folder /home/Public which is a general shared directory for certain users.
19:09
but it is its own partition
19:09
would that be what is causing it?
19:09
unmounted /home/Public and it runs fine
19:11
alkisg: which PRNG is used for ltsp-pnp?
19:17
<alkisg>
gbaman: it mounts a folder via sshfs, with whatever unix permissions it already has on the server
19:17
If you want it read only, just set the appropriate mode on the file system
19:17
<gbaman>
hmm
19:17
<alkisg>
(10:09:27 μμ) bennabiy: would that be what is causing it? => it could be
19:17
File some bug report about it
19:17
(10:11:11 μμ) bennabiy: alkisg: which PRNG is used for ltsp-pnp? => what's a PRNG?
19:18
<bennabiy>
Pseudo Random Number Generator
19:18
<alkisg>
Whatever linux uses
19:18
LTSP is a just collection of scripts and methods for netbooted clients, ltsp-pnp is just about using the server's root file system as a template
19:19
It's not like they have their own linux implementation, no need to refer to "ltsp-pnp" for general linux questions...
19:20
<bennabiy>
I am using it as compared to generating a ltsp chroot through ltsp-build-client
19:20
as I noticed that you tend to do
19:21
<alkisg>
Sure, they both use the underlying distribution
19:21
<bennabiy>
yes
19:21
<alkisg>
So for generic linux questions, it's more appropriate to ask e.g. "what PRNG is linux using", not "what PRNG does ltsp-pnp use"...
19:23
<gbaman>
alkisg: here is one for you that seems to be new.. Using Ubuntu 14.04 with pis, keyboard and mouse aren't working?
19:24
<WNxCyrius>
what is the easiest way to trim back what the client gets?
19:24
<gbaman>
yet works fine for an older server, also running 14.04...
19:24
<alkisg>
gbaman: I've never seen a pi, so I can't answer pi-related questions
19:24
<gbaman>
is there anything that might ring alarm bells given it is keyboard and mouse?
19:25
<alkisg>
I don't know what keyboard and mouse pis have, but I've seen keyb+mouse problems when the kernel + initrd used are not actually installed on the file system
19:25
<bennabiy>
alkisg: I understand your point... but I also call an ltsp specific command, and then just see output. As to what is being run from the system, and what is an ltsp specific thing happening, it is not entirely clear. That is why I specify the method.
19:25
<gbaman>
hmm, will check alkisg, would make sense
19:25
<alkisg>
E.g. you boot 3.13 from tftp or sd card, but only have 3.11 installed in the nbd/local disk
19:26
bennabiy: ok, I'm trying to help you which parts are not ltsp specific, so that you direct them to appropriate channels
19:26
*help you see
19:27
<bennabiy>
alkisg: I understand.
19:28
what would I file a bug against regarding the ltsp-update-image failing if a filesystem is mounted within /home?
19:28
<gbaman>
alkisg: looks like you are right, that is looking like it is the issue, thanks :)
19:29
<alkisg>
!ltsp-bug | echo bennabiy:
19:29
<ltsp`>
bennabiy: ltsp-bug: To file a bug report for upstream LTSP, go to https://bugs.launchpad.net/ltsp
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19:41
<brianr>
is it normal for the thin client not to have the /proc/bus/usb ?
19:41
<bennabiy>
alkisg: what do I need to pass to ltsp-update-image to see debug info ?
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23:14
<shogunx>
!seen vagrantc
23:14
<ltsp`>
vagrantc was last seen in #ltsp 1 day, 23 hours, 45 minutes, and 39 seconds ago: <vagrantc> what distro?
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