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hi, whats peoples impression with newer DE's with rendered (composite) graphics? This network (100mbit) struggles a bit with kde4.
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Hello guys! In a testing period I would like to be able to edit chroot environment without running ltsp-update-image everytime I make changes.
I know that using NFS would work. But how to tell thin clients to use NFS instead of currently using NBD? Configurations? or should I completely rebuild my ltsp?
release: please mention the linux distro and release you're using :)
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alkisg, sorry, it's Ubuntu 12.10 chroot is i386 not sure about LTSP version
I am following this tutorial now, hope it'll work https://help.ubuntu.com/community/UbuntuLTSP/LTSPWithoutNFS
where is i386/etc/default/ltsp-client-setup is located in latest version of LTSP?
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bakytn: apt-get install nfs-kernel-server on the server, export /opt/ltsp/i386 in /etc/exports,
and then sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg
There you'll see many entries. The first one is NBD, the second NFS. Switch them.
The UbuntuLTSP wiki is extremely out of date, it either needs a maintainer or someone to delete it :)
alkisg, so there's no need to update ramfs then?
alkisg, cool, trying.
alkisg, getting just a black screen
I do not know about 'quietsplash', but I do know about these similar topics: 'quiet-splash'
quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and remove quiet splash plymouth:force-splash vt.handoff=7
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alkisg, btw alkisg, while you are here, please can you direct me on how to customize the login screen? what I want is to have 2 inputs on the same page (login, password)
bakytn: you'd need to recompile the ldm greeter (it's in .c)
Or just wait until ltsp6 and lightdm...
alkisg, cool, sorry for this shameless question..when is ltsp6 coming?
Noone knows; but next week we're supposed to have a hackathon to start ltsp6
I imaging it'll be there for the next debian stable version, and maybe in ubuntu too if the MIR stuff doesn't make all devs leave ubuntu...
alkisg, yeah I heard about MIR..
alkisg, about NFS. it was loading almost fine until it stuck on "cannon create /etc/hosts: Permission denied"
full line: "/usr/share/ltsp/screen.d/ldm 93: /usr/share..."
full line: "/usr/share/ltsp/screen.d/ldm 93: /usr/share/ltsp/screen.d/ldm: cannon create /etc/hosts: Permission denied""
It should be writeable at that point, I don't know why it isn't, it needs troubleshooting
(debugging the ltsp code)
can the problem be in nfs? here is the line: "/opt/ltsp/i386 *(no_subtree_check,no_root_squash)"
add rw option working fine
No, you shouldn't do that
I'm guessing the problem is in the tmpfs mount over the nfs mount
Maybe it's not working with overlayfs and it needs to have aufs forced...
With NFS rw you're letting the client "destroy" your chroot
alkisg, got it
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do you know why I am able to login with login/password but can't sudo from ltsp session? (note: I am in sudoers)
I can't change my password either
Trying to do it at server or client?
muppis, at server
muppis, or...better with example: I boot with thinclient to LXDE session. Run terminal (not a localapp) and then try to passwd (to change my password)
muppis, I played with LTSP a lot before (a year ago ro so) and haven't faced any issue
release is: Ubuntu 12.10 am64, chroot is i386 with lubuntu,kubuntu,xubuntu desktops installed
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muppis, that's not normal right? I mean..may be tehre something changed in one year
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With thin client you should be able to do things at server like you're locally logged in, as you might already know that. :D So no, that's not normal that you can't change your passwd or do sudo.
Unless you didn't mistype something in sudoers file.
muppis, no I didn't..
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how to enable encryption? I set LDM_DIRECTX=False on lts.conf and tcpdump is not showing encryption information (Ubuntu 12.10 amd64, chroot i386)
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is LDM_DIRECTX actual on latest versions of LTSP?
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wow! so many people loged in ;-) greetings to all
can you help me with this: http://pastebin.com/9Rzngf2C
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I wish, but that is way above to my knowladge ;-)
bakytn: yes it is
markit, thank you for your response! but how can we explain that ti's not encrypted?
with LDM_DIRECT = true you have NOT encrypted
markit, I am setting LDM_DIRECTX=False and was expecting that whole traffic to be enrypted
ah, sure, it should (and slow down a lot)
have you rebooted the client?
and how can you tell that is not encrypted? should go through ssh tunnel AFAIK
markit, is it really really feasible to try to encrypt everything? or there any other security options in ltsp
markit, I was using tcpdump sudo tcpdump -i eth0 host <thin client ip> and port 22
markit, I was running it right form the server
bakytn: I need performances not security, so I'm not expert on this... the only option I've used is ldm_direct=true
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and you don't see traffic with tcpdump?
markit, I see traffic only when I login and logout
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mmm I'm at work, can't test in my home ltsp installation
try without port 22
maybe they connect encrypted with a different port?
markit, yeah I thought so too but didn't check :)
markit, one moment
markit, I see the traffic but not sure if it's "encrypted" or not
bakytn: I've cheked my notes
you are right, you have to check port 22
may I see your lts.conf (pastebin)?
have you put ldm_direct under [default] ?
wait. is it LDM_DIRECT or LDM_DIRECTX?
it's the latter one on all docs I found
I was lazy typing
the: "X_MODE_0 = 1024x768" part is just for me to verify that lts.conf is processed
as far as I remember, LDM_DIRECTX=false is the default in any case
so that's really odd
and you are sure that that lts.conf is processed (maybe somewhere else you have LDM_DIRECTX=True ;P)
markit, it's NFS, but I don't think that it could somehow related
markit, good question. one moment
is it FAT or Thin client???
markit, how to find out? lol I mean..it's just a ltsp-build-client
markit, it's thin client I guess
ok, because fat don't produce ldm traffic
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markit, then I wouldn't see the ldm traffic when login/logout right?
you still see ldm traffic at login/out
I have another lts.conf which is on /opt/ltsp/i386/etc/lts.conf
because authentication is done against the server in any case
markit, yes I see ldm traffic at login/out
bakytn: are you using ubuntu or debian? version?
markit, ubuntu 12.10
Argh. Hey all. Trying to follow instructions at https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp and getting an error already when just trying to add the Greek schools ppa. Tips?
FrozenZia, hey, which error?
bakytn: and you are editing /var/lib/tftpboot/ltsp/i386/lts.conf right?
bakytn: last test, reboot the server ;P
sorry, I've no more ideas on this issue
markit, why not.
bakytn: Exception in thread Thread-1, then a bunch of references to python files, then "ValueError: cannot convert float NaN to integer"
markit, remembering some Windows times
FrozenZia, do you have right Python?
yep, good format c: also
12.04 fresh install. What should it be?
bakytn: btw, I've ltsp on 12.04, even if I dubt that 12.10 is a problem (except some bug on ldm_directx part ;P)
bakytn: 2.7.3 looks to be the version
FrozenZia, looks ok
FrozenZia: Nice to seeyou around! :)
hmmm... Bug #1063350... checking this out...
elias_a: hello hello hello!
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reboot didn't help lol
markit, you don't have possiblity to quickly test this? :D
anybody has any possibility to test LDM_DIRECTX=False?
bakyt: I'm 80 Km far away from my home, sorry
bakyt: I guess you have graphical traffic on port 6007, right?
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markit, is it udp?
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or can you check when moving mouse/windows if you have a burst of traffic ?
bakyt: don't know if udp or tcp, my notes don't tell me
probably I was using wireshark on the server just to check what is happening
you will have NBD traffic (the "hard disk" one) and the X-Window one
X-Window one should be on ports like that
markit, I am using NFS for now
no traffic on 6007
ok let me use wireshark
nfs not only for homes? you using "the debian way"? no ltsp-update-image?????
then you don' thave to modify THAT lts.conf
but the other one
in any case, do a # find / -name lts.conf and modify all the ones you find
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bakyt: if you use "the debian way" (no NBD), the right file is /opt/ltsp/i386/etc/lts.conf
markit, how to find out if it's a Fat or Thin?
there should be a ltsp-info maybe
try ltsp-TAB completion from bash
and see if there is a name that suggests to give info back
bakyt: confirmed that that bug (and the Q&D-workaround that just got posted about 5 hrs ago) was my problem (and solution!)
or go on the client, open some programs and see if in the server you can see such processes
markit, ltsp-cluster-info is just showing ip and other general info
markit, man, if I got LibreOffice installed on chroot it means that it's fat client right? :D
markit, if it were installed on server. then it would be thin client right ? (as calculations would be made on server side only)
bakyt: yep, very probably
markit, so my server os is: Ubuntu server edition with no desktops installed
markit, so it means that I have FAT CLIENT
markit, ok. now it makes sense.
ltsp-build-client should produce a thin chroot by default
markit, yes, when I first tried to login it was showing a command prompt (shell)
maybe the default is different in 12.10?
markit, no no it makes sense. I installed lubuntu-desktop on chroot and NOT on server side
markit, so it 100% fat client then.
in any case, run libreoffice from the client and with # ps axu see if the process is there
if not, you are sure on FAT
markit, no process on server (of course)
markit, I am FAT (OMG)
you are welcome
at least it has a rational explaination ;P
no format c: needed ;P
markit, I think fat clients rules...more reliable and less problems to my mind. the only thing is you need to get better devices that's it
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Question about LTSP-PNP... If I have some instructions about "normal" ltsp which say to install something in /opt/l
but I'm using Ltsp-pnp -- then I'm thinking I just install said file into /usr/local/bin, isn't that right?
(and then create a new client image with ltsp-update-image)
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ltsp-update-image -c /
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...and if I make changes to lts.conf, does that also require a ltsp-update-image?
I was thinking that not.
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Question becomes, can I use RCFILE-parameters in my lts.conf with ltsp-pnp?
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good morning sbalneav
how are you?
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