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


Channel log from 31 July 2009   (all times are UTC)

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04:07
<Appiah>
Good morning #ltsp
04:10
<tarzeau>
hi
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04:41
<alkisg>
Good morning
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08:54
<muh2000>
hi
08:54
is it possible to have one computer providing the files with tftp/dhcp and another for the ltsp server?
08:59
<cyberorg>
muh2000, yes
08:59
<muh2000>
nice
08:59
easy to setup?
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09:00
<cyberorg>
easy depends on the distro and how much you know about simple sysadmin tasks on linux ;) look up LDM_SERVER variable in ltsp docs
09:03
<muh2000>
hmm where in the docs?
09:04
got it
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09:08
<cyberorg>
you'll also have to get ssh keys of LDM_SERVER to client image, all distro has different way of doing that
09:09
<muh2000>
where are the keys usually stored?
09:10
<cyberorg>
which distro?
09:10
<muh2000>
debian/squeeze.
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09:11
<muh2000>
i want dhcp/tftp running on a small router. nfs/ltsp on the big server
09:11
<cyberorg>
on the server in nfsroot image
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09:12
<cyberorg>
etc/ssh/ssh/ssh_known_hosts
09:13
sorry that would be /path/to/nfsimage/etc/ssh/ssh_known_hosts
09:14
<muh2000>
yeah i got it but when nfs and ltsp are on the same host i woulnd need to move the ssh keys, would i?
09:14
or are they included in the initrd?
09:15
<cyberorg>
why? just append to that file with ssh keys of other LDM_SERVERS
09:16
<muh2000>
yeah but only one host should be ldm server.
09:16
<cyberorg>
you can get the keys in correct format ssh-keyscan -t $encryption $anotherserverip >> /path/to/nfsimage/etc/ssh/ssh_known_hosts
09:17
that is specified in lts.conf, clients will use the one specified there, having additional ssh keys shouldn't matter
09:18
<muh2000>
ok
09:19
when the router provides the kerne/initrd and a big server the nfs files... how does the client know that it has to talk to the big server (lts.conf is located on the big server...) am i missing something?
09:21
<cyberorg>
hmm, that wont work, in that case just router just to provide dhcp and point next-server to your ltsp server for tftp and ltsp image, or set up proxy dhcp using dnsmasq and alkisg1's script
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09:24
<muh2000>
hmmm ok i think i will do it with only dhcp and the remaining on the big server ^^
09:24
thnx for your time :)
09:26
<cyberorg>
good luck :)
09:26
<muh2000>
i have to order the router first :D
09:26
<cyberorg>
then why do you need a router? ltsp server can work as a router too
09:27
<muh2000>
yeah but having the internetconnection independet of a bigger server is something i want ^^
09:29
i have trouble upgrading the ltsp client image distupgrade and xorg hangsinvoke-rc.d: initscript hal, action "restart" failed
09:31alkisg1 is now known as alkisg
09:32
<alkisg>
muh2000: I also needed to have a router as a dhcp server, and I came up with this: https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP
09:32
Should work on pretty much any distro...
09:34
<muh2000>
alkisg: except i want the router also have tftp'ing for other stuff and it should be the dhcp because sometimes i want to shut the big server off.
09:35
<alkisg>
You can keep the tftp there, and point the ltsp clients to the ltsp tftp server
09:35
=2 tftp servers
09:35
I think that's the easiest path to go by
09:37
Otherwise every time you updated the kernels, you'd have to upload them to the router...
09:37
<muh2000>
yep that was my plan :)
09:37
(pointing the other next server..)
09:37
<alkisg>
Why bother? What's the problem with having a second tftp server?
09:38
You may specify a different tftp server for ltsp clients, and a different one for other clients
09:39
<muh2000>
that is what i am going to do.
09:39
<alkisg>
Ah, ok. Well it's really easy, 1 = install dnsmasq, 2 = put an appropriate .conf file
09:39
<muh2000>
just wanted to make sure whether other options were possible...
09:39
wouldnt it be easier to just edit the next-server option in the dhcp configß
09:40
?
09:40
<alkisg>
Does it support different tftp servers based on the vendor identifier the clients send?
09:40
<muh2000>
yeah
09:40
ldap conencted dhcpd ^^
09:41
<alkisg>
Sure then that would be easier. Which router is that?!!!
09:41
<muh2000>
i even dont need to restart the dhcp :D
09:41
well it isnt bought yet. but i will just move my server routing setup on the little box.
09:42
http://www.pcengines.ch/alix2d13.htm alkisg
09:42
<alkisg>
Ah ok it's pc based... :)
09:42
<muh2000>
yeah
09:43
<alkisg>
Just wondering, where would ldap be useful in a dhcp server?
09:45
<rjune_>
ogra: there was a guy in here yesterday wanting to know about LTSP on a beagleboard
09:46
<ogra>
i saw the ping ... not much i can say ...
09:46
wedont have kernel packages for beagle
09:46
so he would have to roll kernel and initramfs himself
09:48
<muh2000>
alkisg: easy and fast editing of settings for dhcp. that is why ldap
09:48
<alkisg>
muh2000: ? how is it easier or faster than editing a file?
09:50
Anyway, I'll google that :)
09:50
<muh2000>
you can use a browser like luma or myldapadmin to edit the values. click, click, click... instead of vi /etc/ladia/bla.conf /etc/init.d/bla restart
09:50
and when there is a config error you have to check etc to bring the dhcp back up.
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09:51
<muh2000>
i am also thinking about moving all ldap stuff on the router... ~15mbytes... and doing a sync with the big server ^^
09:51
<alkisg>
muh2000: there are also clickety click ways to edit dhcpd.conf...
09:52
There are GUIs for this task
09:52
<muh2000>
alkisg: yeah but would require me to logon and xforward.....
09:52
<alkisg>
Or use a web browser
09:53
<cyberorg>
matttttt, new updated image now has qtnx client, see changlog for more info. it will take some time before the package is built and show up on mirrors
09:53
<muh2000>
and one gui would be luma and one browser would by myldapadmin ^^ dont know about others
09:53
<alkisg>
gadmin-dhcpd
09:54
or webmin... (I think)...
09:54
http://doxfer.com/Webmin/DHCPServer
09:55
<muh2000>
but the gui has to run on the same host?
09:55
<alkisg>
It's web based, you can connect to it by any browser / os etc
09:56
<muh2000>
webmin? webmin blows.
09:59
<cyberorg>
move over webmin, yast web is coming :) http://en.opensuse.org/YaST/Web
10:01
<muh2000>
hmmmm determining whether that is better... rofl.. :D
10:02
<alkisg>
ogra, about the Intel GMA 500 that you told me that I would need to compile a kernel yesterday: thousands of greek students will be given a netbook in september, and it will probably be an atom-z based netbook with this card... Yeah, I know it sucks :( but do you think I could help them install ubuntu by compiling a custom kernel with dri2 and uploading it to a ppa? Does this sound feasible?
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10:03
<ogra>
i didnt say you need to compile a kernel :)
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10:03
<ogra>
i said you need to compile dri2
10:03
<alkisg>
I _might_ have misunderstood :)
10:04
Ah, that sounds easier (I hope:))
10:04
<ogra>
check the packages, i dont know them but would expect they use dkms and compile everything at install time
10:05
<alkisg>
Nice, I'll tell the person testing the netbook to try that
10:06
Thanks!
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10:45
<rjune_>
ogra: ok, If he comes back, I know now
10:45
thanks
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11:21
<Ahmuck>
*yawn*
11:21
k, i'm ready to work on sound problems again :)
11:27* highvoltage wonders where q-funk is these days
11:38
<ogra>
trying to find a job ?
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11:41cascade is now known as CaScAdE^Wacken
11:42
<ogra>
CaScAdE^Wacken, chatting from the festival ? :)
11:43
<CaScAdE^Wacken>
sure
11:43
<ogra>
heh
11:43
<CaScAdE^Wacken>
)http://www.youtube.com/watch?v=aeNWh3LXpF0
11:44
<ogra>
lol
11:44
<CaScAdE^Wacken>
http://www.youtube.com/watch?v=aeNWh3LXpF0
11:44
so...
11:44
habe to go back...
11:44
just had to upload that vid :D
11:44* ogra grins
11:44
<CaScAdE^Wacken>
habe = have
11:44
damn beer
11:45
<ogra>
enjoy
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12:50
<bieb>
!seen Gadi
12:50
<ltspbot>
bieb: Gadi was last seen in #ltsp 18 hours, 4 minutes, and 1 second ago: <Gadi> good luck!
13:03
<dark4og>
?.. Do I need to run 32 bit linux on my server for x86 clients to work?
13:03
<Appiah>
no but you need 32bit/x86 client builds
13:04
ltsp-build-client --arch i386
13:04
--arch=i386*
13:11
<Ahmuck-Jr>
question about nbd. how does it work, from what i'm reading, it's uber dangerous
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13:16
<dark4og>
? How do I install another Image for clients that are not 64 bit on a LTSP Server that is 64 bit?
13:25
<rjune_>
Gadi: you about?
13:25
<alkisg>
dark4og: (09:03:22 μμ) Appiah: ltsp-build-client --arch=i386
13:28
<dark4og>
alkisg: Thx..
13:38
<Gadi>
rjune_: kinda sorta
13:39
<rjune_>
Gadi: do you remember who was asking about beagle board yesterday?
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13:39
<Gadi>
his nick began with a "p"
13:39
peleus, I believe
13:40
<rjune_>
yeah, that sounds right
13:43
<alkisg>
(10:33:19 μμ) peleus: hello, have anybody tried ltsp on Beagleboards ? I would like to check if the chance is possible before I buy ;)
13:43
Logs, people :)
13:44
<rjune_>
I don't have logs
13:44
thanks though alkisg
13:44
<alkisg>
OK I was just joking
13:44
But there are logs in nubae's site
13:45
<peleus>
Gadi, alkisg oh thanks, that's good
13:45
is it quite straight forward ?
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14:05
<Ahmuck>
how does ltsp use nbd?
14:06
<Blinny>
very.... carefully....
14:06
Ahmuck: NBD provides the client image
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14:06
<Blinny>
(in Ubuntu and several others, ltsp5+)
14:07
<Ahmuck>
not like nfs?
14:07
read/write?
14:07
<Blinny>
No, it's RO
14:08
<Ahmuck>
nbd is read only?
14:08
or ltsp image is read only?
14:10
<Blinny>
After the image is compressed (squashfs) and sent to the client, it is effectively readonly. If you, as a sysadmin need to augment the image that is sent to booting clients, you can do so at any time. This is how localapps works.
14:16
Ahmuck: You can do so by editing the image directly, or chroot'ing to the image tree and then apt-get or yum'ing.
14:16
er, editing the image tree directly
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14:20
<Ahmuck>
Blinny: actually i was looking at nbd for another project, to see if i could replace nfs
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14:53
<dark4og>
LTSP Client, when logged in, I have only terminal after GDM installed in chroot
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15:02
<ogra>
yes, thats not supposed to work
15:08
Ahmuck, nbd exports a block device to the network thats a layer below the filesystem
15:09
Ahmuck, you can use nbd in readwrite mode indeed, the thing is that you export an image
15:12
Ahmuck, while nfs exports directories
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17:00* Lns peeks in through the door
17:02
<TronCarter>
./win 19
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17:11
<coldfusion>
hi
17:11
any gentoo users of ltsp around?
17:17
<Lns>
coldfusion: ssshhhhhhh...it's nap time here
17:17
;)
17:17
<coldfusion>
lol
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17:17
<coldfusion>
the ltsp-client init scripts wont run you see, and i'm wondering if they actually do anything useful
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17:18
<Lns>
sure they do (do something useful) - they set everything up for the client
17:18
why won't they run?
17:18
<coldfusion>
complaining about not being able to write to files in /etc because of the unionfs
17:19
the thing is - i can log in and run X manually, because the root is already on the server... but i'm thinking properly setup it might run faster?
17:20
<Lns>
not sure...unfortunately i don't have much experience w/unionfs
17:21
<coldfusion>
yeah. i might reconfigure from scratch and ditch the unionfs
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