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


Channel log from 10 March 2012   (all times are UTC)

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12:11
<srdjo>
alkisg, I think there is a bug on 11.10 (dont know if it was fixed) with screen lock password on FAT clients
12:12
when screen locks (screensaver) it wont accept correct password, so users must restart clients in order to boot
12:20
<alkisg>
The user passwords are not transferred to fat clients for security reasons, that's why they can't authenticate
12:21
You need to disable screen locking until a better method is found
12:21
<muppis>
I wonder could ldap to the trick?
12:21
<alkisg>
ldap is a bit difficult to configure, so sbalneav is trying to implement libpam_ssh for ssh-based pam-enabled authentication
12:22
<muppis>
Difficult, but possible?
12:23
<alkisg>
Sure, but I think it's outside the scope of ltsp
12:23
Not all people would want to switch to ldap
12:23
<muppis>
Maybe.
12:23
Well, that's true.
12:23
<alkisg>
Once freeipa or whatever else takes over the world, and everyone uses ldap, then sure, ltsp can reuse that
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14:06
<srdjo>
alkisg, is there a way to exit frozen vnc session (from epoptes) without restarting ltsp server ?
14:06
<alkisg>
srdjo: what do you mean frozen session?
14:07
Are you running epoptes from the ltsp server?
14:07
<srdjo>
yes I am
14:07
<alkisg>
And your session froze?
14:08
Or the client session froze?
14:08
<srdjo>
I can move the mouse, but I cant click anything in the client nor in the server
14:09
<alkisg>
But I don't understand why vnc is related to that
14:09
VNC isn't running on the server, is it?
14:10
Press alt+ctrl+f1 on the server, login, run ps aux > ~/psaux, and then kill whatever you want
14:10
If you think it was related to epoptes (don't see how it would), keep the psaux file to help troubleshooting
14:11
<srdjo>
vnc client has the keyboard - server wont recognize the key press nor the mouse
14:13
<alkisg>
It's just hanged, try ssh'ing to it
14:13
It's not related to epoptes
14:13
<srdjo>
ill try to "kill" myself from other terminal :)
14:15
i started client vnc control from epoptes so i thought there is a way to end it from there also
14:16
<alkisg>
I don't understand you, if you started vnc control of the client why was the server hanged without vnc running?
14:21
<srdjo>
i started epoptes on the ltsp server, selected client, clicked control, and controlled the client for some time and when I tried to minimize the client window, it did not react to mouse clicks neither in client nor on the ltsp server. So I asked if there was some built-in key combination (like alt + F4) to tell the client to release mouse so I can use it on the server.
14:25
<alkisg>
The vnc client can't capture the server mouse, your server just hanged
14:35
<srdjo>
killing the xvnc viewer process got me my mouse back :)
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16:45
<Llama_be>
on Gentoo, I have got it working where it pxe boots the kernel. However it complains it cannot mount the nfs root fs, while I can mount it from another box. Error is: "Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,255)"
16:53
I notice there's no CONFIG_ROOT_NFS in my kernel .config. is it obsolete?
17:02
ok, solved this, had APPEND initrd=path_to_initrd in pxelinux.cfg/default, should have been INITRD path_to_initrd
17:23* Hyperbyte high fives Llama_be
17:25
<Llama_be>
my client now boots, but seems to ignore my lts.conf. I want it to start rdesktop, and instead it shows an LTSP login screen
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18:11
<Hyperbyte>
Llama_be, pastebin your lts.conf
18:11
I don't know how you'd expect us to help you without that information. :-)
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18:17
<Llama_be>
my lts.conf is simply this: http://pastebin.com/X1Y4uxru
18:18
but I have the impression it's not even loading the lts.conf, but I can't view everything that the boot process says, because it goes by too quick
18:23
is there an easy way to make the boot process stop before any graphical things are being started?
18:23
<alkisg>
Llama_be: init=/bin/bash
18:24
How old is your ltsp version?
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18:26
<Llama_be>
alkisg: it's a gentoo that has been installed 2 weeks ago, but hadn't had the time to finish it at that time...
18:27
<alkisg>
Llama_be: I don't know what ltsp version a 2 weeks old gentoo has
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18:27
<alkisg>
What is your client command line? append=what?
18:27
*kernel
18:27
And, ltsp 5.2? 5.2.3?
18:28
<Llama_be>
5.2.18, is that possible?
18:29
APPEND root=/dev/nfs nfsroot=192.168.50.22:/opt/ltsp/x86 init=/bin/bash
18:29
(but I've just added the init=/bin/bash)
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18:31
<alkisg>
Sure, it's possible, I was asking in case you had something extremely new that supports break=certain scripts
18:32
Now, I assume that gentoo has code in the initramfs that gets lts.conf
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18:32
<alkisg>
So from init=/bin/bash, you'll be able to run getltscfg -a and see if you got the correct lts.conf
18:33
<Llama_be>
and that does not really help anything, the init=/bin/bash. And I'm definately seeing some error before ldm loads, it's just too quick for me to determine what it is...
18:33
<alkisg>
init=/bin/bash is supposed to stop the system right after the initramfs
18:33
So if that's not functioning, maybe you're not editing the correct file?
18:34
<Llama_be>
it's the pxelinux.cfg/default file I put that in. and if I mess up the nfsroot= directive, it does fail (as expected), so I believe I am changing the correct file...
18:36
<alkisg>
Maybe Gentoo has some other syntax for init= then, dunno
18:36
Another thing you could do, in Ubuntu at least, not sure if it's supported in Ubuntu, would be:
18:36
[Default]
18:36
SCREEN_02=shell
18:36
That would give you a text mode shell instead of xfreerdp
18:37
*supported in Gentoo I meant
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18:42
<Llama_be>
I believe it should be supported yes, but doesn't work, but that could ofcourse also mean that my hypothesis of it not loading lts.conf is correct
18:42
<alkisg>
Your lts.conf is in /opt/ltsp/x86/etc/lts.conf ?
18:44
<Llama_be>
I thought it had to be in tftpboot/x86/ ? But I had also already tried the location you said, and that didn't work either (retrying now though )
18:45
<alkisg>
In general, when nbd is used, lts.conf is fetched from tftp,
18:45
while when nfs is used , lts.conf is directly read from the chroot
18:45
No idea what Gentoo does, but it should at least default to the lts.conf in the chroot
18:52
<Llama_be>
ok, i made an error with the lts.conf in the chroot, which I now fixed. Now I saw that it launched a root shell, but it immediatly dissapeared and now presents me with a login prompt (but textual, no ldm anymore)
18:53
and unfortunately shift-page up does not work, to go up and see what the problem is...
18:53
<alkisg>
Alt+Ctrl+F2 doesn't give you a console without a prompt?
18:54
Also, what are you trying to run? ldm OR xfreedrp?
18:55
LDM is the display manager for LTSP, xfreerdp is a program to connect to windows servers
18:55
<Llama_be>
I want to run xfreerdp, but the problem was that it was always starting ldm
18:56
and no, alt+ctrl+f2 does not give me my shell :-s
18:56
<alkisg>
Can you login at that login prompt? Do you have the root account unlocked?
18:59
<Llama_be>
hmm, apparently, when I press enter, I enter into the shell (without logging in) and a couple of seconds later it respawns the login propmt
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19:07
<alkisg>
Llama_be: do you have that file? /opt/ltsp/x86/usr/share/ltsp/screen.d/xterm
19:08
<Llama_be>
yes
19:09
<alkisg>
Try
19:09
[Default]
19:09
SCREEN_07=xterm
19:09
If you get an xterm with that, try running xfreedrp from there
19:11
<Llama_be>
yes, that works...
19:12
<alkisg>
Once you find the correct xfreerdp command line, put it in lts.conf, all of it
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19:18
<Llama_be>
and then it stops working :( but I kinda have to go now. I will try to fix it later, maybe discuss with knipwim|vacation, when he's back from vacation, as he is familiar with ltsp on gentoo
19:19
<alkisg>
Maybe you're missing the xfreerdp screen script
19:19
<Llama_be>
no, it is present in the screen.d directory
19:20
thanks for the help already! I will play with it later to see if I can find the problem.
19:21
<alkisg>
bb
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23:14
<modris>
hi, in general i'm win sysadmin one on board with sbs2008 and 70users.
23:15
for now i seek solution for virtual desktop solution
23:15
<alkisg>
Windows desktop?
23:16
<modris>
vmware, citrix is not cheap, but work...
23:16
yes for now only win desktops and ms office suite for mostly
23:17
in future i can change some user to openoffice, maybe on opensuse too
23:18
first ooo or libre, then opensuse. is ltsp the way that You suggest try for tests?
23:18
<alkisg>
LTSP supports xfreerdp or rdesktop to windows servers, and with a bit of hacking you can also have the clients boot to a minimal linux + virtualbox/vmware => windows VMs on top of it
23:22
<modris>
alkisg: thnk. but in this solution pros from ltsp for me will be that client side may be thin client and i dont take care of it, but for workstation configuration i must work with all image individually or mass cloning. correct?
23:23
<alkisg>
No
23:23
In both cases you only need a single image and no cloning
23:23
<modris>
there is no standart image management, connection broker (or similar name) with AD
23:24
<alkisg>
In ltsp the clients don't need to have disks, and usually we only have a single image for any number of clients
23:25
<modris>
possible i miss something, i already take fast read http://dfn.dl.sourceforge.net/project/ltsp/Docs-Admin-Guide/LTSPManual.pdf can You suggest other reading material or i just need make test lab and that is the way how hurry get vision about ltsp?!
23:26
<vagrantc>
i like learning by doing, if you can make a test lab environment
23:27
<modris>
one image for all clients, but how about specific soft for specific users? is this ok or one image is that what get all?
23:28
<vagrantc>
typically, software is managed on the server.
23:28
<modris>
test environment = nice, but time is ticking away. because i'm take some dig there. and thank for you helping
23:28
<vagrantc>
the thin clients connect to the server ... it's like an extra monitor/keyboard/mouse for the server, sort of.
23:29
a test environment can just be two computers, one with two network cards: one plugged into the main network, the other plugged into a hub/switch that the thin client is plugged into.
23:29
<modris>
ok think i got, all connected users work in one working OS, like multiplayer, is this correct?
23:30
and there no one virtual pc for each user?
23:30
and there are no one virtual pc for each user?
23:30
<vagrantc>
they all log into the server, and run applications there. that's the typical thin client model. there are other more complicated options, but understanding that first is important.
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23:31
<vagrantc>
modris: that's possible, but a much more complicated setup- i wouldn't recommend it to learn LTSP.
23:32
<modris>
vagrantc: thank, think/hope i got ltsp difference from wmvare
23:32
because for now i know only information about enterprise solution posible my Q for You think dumb...
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23:33
<modris>
THank All for help, try one small test env and then will be back if need!
23:33
<vagrantc>
good luck!
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