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


Channel log from 7 March 2013   (all times are UTC)

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08:47
<bakytn>
hey!! what's the default password for root in fat clients? I am logged in as user (which is also a sudoer). But in the session I cna't sudo nor I cna't change my own password
08:49
<FrozenZia>
bakytn: I may have run into a similar situation yesterday when I didn't seem to be able to sudo anything (may password was always "wrong" according to the system). Unfortunately I haven't tried to solve the problem yet, so have no help for you.
08:49
*my
08:49
<bakytn>
FrozenZia, are you using fat client or a thin client?
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08:51
<FrozenZia>
Well, I haven't specifically done anything to make it fat or thin, so with ltsp-pnp, does that mean my default is which?
08:53
bakytn: Is this yours: http://askubuntu.com/questions/171049/sudo-password-doesnt-work-on-fat-client-but-works-fine-on-server
08:53
(no answer, as yet)
08:53
<bakytn>
FrozenZia, no not mine
08:53
FrozenZia, quick question what is ltsp-pnp?\
08:58
<FrozenZia>
I'll begin by saying I'm no afficianado, but it's a "flavor" of ltsp that uses dnsmasq to somehow avoid the need for a dhcp server on the ltsp server, which lets you plug it straight into a e.g. school network without borking the networks dhcp server OR without needing to set up the 2 NIC setup.
08:58
https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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10:07
<elias_a>
FrozenZia: What a compact way to say what ltsp-pnp is all about!
10:36
<work_alkisg>
bakytn: there's no default root password in either thins or fats
10:36work_alkisg is now known as alkisg
10:58
<FrozenZia>
elias_a: glad if I got it basically right
10:59
alkisg: so like in my case, I have "user" with admin rights on the server, but when that same username tries on client to do something with sudo, then the password doesn't seem to work.
11:02
Couple of questions still unanswered since yesterday if anyone can help: w/ltsp-pnp do I need to do ltsp-update-image after changing lts.conf? Can I use RCFILE params with ltsp-pnp?
11:02
<alkisg>
FrozenZia: about the password: passwords don't work on fat clients, they're not cached for security reasons
11:03
No, you don't need ltsp-update-image after lts.conf changes
11:03
Yes, you can use any lts.conf directive you want with ltsp-pnp, there's nothing special about it
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11:05
<FrozenZia>
I'm just trying to get my client to boot to this script that I have set in the RCFILE param instead of booting up the normal Ubuntu login screen, and it just doesn't seem to be working, so was wondering if I was doing something wrong...
11:06
<alkisg>
Sounds to me like you want to do a custom screen script in /usr/share/ldm/screen.d and not an RCFILE command
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11:08
<FrozenZia>
One "very simple" thing I'd like to do is have a certain client always boot up into memcheck - is that something I'd do with a screen script?
11:12
<alkisg>
A memcheck is usually done *before* the linux kernel is loaded
11:12
So you'd do that with a pxelinux menu
11:12
http://alkisg.mysch.gr/steki/index.php?action=dlattach;topic=2828.0;attach=1672;image
11:14
<FrozenZia>
yeah, that's basically what I want, but I know for example that 1 certain machine in my network is only used for memory testing, so whenever it starts up, it could just go straight to memcheck...
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11:20
<alkisg>
FrozenZia: ok you don't need a pxe menu for that, just a custom /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/01-mac-address file
11:32
<FrozenZia>
could I just copy .../pxelinux.cfg/memtest for that? And is that ok to do? Seems like all the files there say not to edit them at all and look at /etc/ltsp/update-kernels.conf instead?
11:33
(and sorry for the continued n00b question, but...) and I presume that changes like that do NOT require ltsp-update-image, right=
11:33
?
11:34
<alkisg>
FrozenZia: yes, you can copy pxelinux.cfg/memtest to 01-a1-b2-c3-d4-e5-f6
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11:52
<FrozenZia>
hmmm... seems to get the right file sent to client, but I get "no default or ui configuration directive found"
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11:54
<bakyt>
alkisg, so it's not possible now to gain root access anymore in ltsp?
11:58
<alkisg>
bakyt: sure, just set a root password in ltsp, or use this:
11:58
!screen_02
11:58
<ltsp>
screen_02: To get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using_a_shell_SCREEN
11:58
<alkisg>
FrozenZia: Try modifying the 01-mac file so that it has this on top: default memtest86+
11:59
<bakyt>
alkisg, you mean ltsp-chroot and then passwd? cool!
11:59
<alkisg>
Yup
11:59
<bakyt>
alkisg, thanks!
12:13
<FrozenZia>
=o( with 2 lines: "default memtest86+" and "kernel memtest86+.bin", I get a cannot find kernel memtest86+
12:14
with 3 lines: "default memtest86+", "label memtest86+" and "kernel memtest86+.bin" I get an infinite loop of lines with one entry: 8000
12:15
Trying to do more reading to figure this out...
12:23
<alkisg>
FrozenZia: try also renaming the file etc so that it doesn't have a "+"
12:23
I think I remember some related errors about pxelinux..
12:40
<FrozenZia>
alkisg: thanks, but still no go, and the same problems as before, so I don't think it's the naming...
12:42
<alkisg>
FrozenZia: ah, a second though - maybe it was the .bin extension, can you also try with plain "memtest86" ?
12:45
<FrozenZia>
Brilliant - that was it! THANKS!
12:45
(and wtf?) that seems really weird.
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12:47
<alkisg>
I think for some systems the .bin extension is special for booting, and pxelinux considers it special too
12:47
Ask in #syslinux for more details :)
12:51
<FrozenZia>
ok...
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14:06
<ltspuser_15>
anyone here?
14:07
I have a question about LTSP and the ability to work with a TS Gateway.
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14:55
<markit>
hi, in syslog I find some "kernel: [ 1298.623834] nbd-server[7939]: segfault at 0 ip 0000000000402ac9 sp 00007fff0fe0f390 error 4 in nbd-server[400000+a000]"
14:56
it's a 64bit host, since 32 bit were unable to work reliable
14:56
(it's a 2 processor, 64GB ram, raid, etc... of a school of a friend of mine)
14:56
any idea?
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15:25
<sbalneav>
Morning all
15:26
markit: yeah, looks like nbd-server crashed. probably a bug.
15:30
<ogra_>
!s
15:30
<ltsp>
s: Scotty!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
15:32
<markit>
sbalneav: funny thing :( I've checked if there fine tunings for it, but seems that there are no limits of connections or something like that
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20:20
<alkisg>
stgraber: did you once develop a python-based lts.conf parser?
20:21
<stgraber>
alkisg: yep
20:21
<alkisg>
Any links handy? Me and Phantomas are trying to propose an lts.conf daemon/replacement...
20:21
Something with SimpleHTTPServer and wgets on the client side, similar to -cluster
20:22
<stgraber>
alkisg: http://bazaar.launchpad.net/~ltsp-cluster-team/ltsp-cluster/ltsp-cluster-agent-thinclient/view/head:/plugins/ltscfg/__init__.py
20:22
<alkisg>
Tyanks!
20:22
Phantomas: ^
20:22
<stgraber>
alkisg: look at parse_config in there
20:22
<alkisg>
Here's a starting point :)
20:22
<Phantomas>
Tyanks!
20:23
<alkisg>
Wow I didn't realize I mistyped until I saw yours :D
20:24
<Phantomas>
:p
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21:26
<andygraybeal>
does anyone use Wacom tablets with LTSP with good results?
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22:39
<ltspuser_76>
Hello again. I have given up on LTSP via LinuxMint and gone back to centos-6.3. With a timely page on the internet I have the server up and running an EL_6 chroot. When I boot the client dhcp gives it an address and the crawler proceeds across the screen, turns white at the end and then just sits there. I have /opt/ltsp and /home exported. Firewall is turned off. Can someone tell me what I'm missing?
22:40
The crawler logo is Scientific 6.1
22:41
The client is a Compaq EN, 866 PIII, 128MB RAM. Is it the RAM size?
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22:44
<vagrantc>
ltspuser_76: Enslaver is working on a RHEL/centos project, not sure the current status
22:48
<ltspuser_76>
vagrantc: Everything up to actual client boot looks fine. Perhaps it's just the size of the env being downloaded. I'll try tomorrow with a meatier client, but that's not what we have in the field. :(
22:59
My "frozen" screen eventually times out to a console screen and I see mention of 'mount.nfs connection timed out' so it's probably a config issue I've messed up. Tomorrow...
23:06
<||cw>
last time I tried 128MB ram was with ubuntu 10.04, and it was barely enough to not want to swap
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