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


Channel log from 21 January 2007   (all times are UTC)

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07:51
<cliebow_>
ogra: you netbooted a g4 ibook?
07:52
<ogra>
veyes
07:52
err
07:52
yes
07:52
<cliebow_>
my setup boots a g3..plug in a g4..goes nowhere..cant remeber boot-file name
07:53
in opfw i hard coded it..still no go
07:55
same vendor-encapsulated-options?
07:55
<ogra>
with the file i pointed you to one of the last days
07:55
<cliebow_>
ill look again..seemed just like mine
07:56
<ogra>
you need the yaboot.conf in the toplevel tftp dir iirc
07:56
i think yaboot cant handle subdirs for it
07:56
<cliebow_>
they all reside in same place..but tftp just wont start
07:57
<ogra>
thats weird
07:58
i'll set up my ibook tomorrow since i need it as thin client (i'm in oslo/norway atm and need to get work done, so i got my two lappies)
07:58
<cliebow_>
g3 boots like lightning..well err..boots fine with a crossover to my lappie
07:59
i capured and printed initial packets for g3..and g4..and g3 to osx server for comparison..
08:03
with a g4 dhcp ACK gives boot file-name /yaboot (for testing)..then an arp packet..then dhcp INFORM says no boot-file name
08:03
<ogra>
hmm
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09:30
<cliebow_>
jammcq:what dpo you know of ar resolution..this seems thekey to rapid d/l of kernel in aapple
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10:40
<edgarin>
Hi
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10:43
<edgarin>
jammcq, hi!
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11:21
<mathesis>
se edgarin
11:21
<edgarin>
mathesis, que tal?
11:22
<mathesis>
sabes a que se debe que no encuentre el server dhcp los clientes y tire el error No }
11:22
No IP address
11:22
<edgarin>
no esta corriendo dhcp
11:22
y si esta corriendo
11:22
esta mal configurado
11:22
revisa bien la Mac Address
11:22
y que el cable de red
11:22
de la estacion no se sea cruzado
11:22
<mathesis>
te paso mi dhcp
11:23
<edgarin>
ok
11:24
<mathesis>
http://pastebin.ca/323693
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11:34
<Walla89>
hey would anyone here happen to know anything about lvs and ipvsadm?
11:42
<mathesis>
edgarin: viste mi dhcp.conf
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11:42
<edgarin>
ahorita lo veo
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14:20
<erdinc>
hi everyone
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14:42
<cliebow>
ho..for xthe ife of a bear
15:09
jammcq:you familiar with arp..how it affcts netboot?
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15:43* erdinc bye aLL..
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15:45
<mathesis>
help me with /etc/dhcp3/dhcpd.conf in ltsp4.2?
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16:42
<cliebow_>
robbie:mornings
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16:45
<robbie>
morning
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17:21
<edgarin>
Hi people
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17:39
<edgarin>
Hi!
17:42
I have a station LTSP with ISA Sound card finally I found the correct module for this sound card is cs4236
17:42
now when I turn on the station, the station show a message:
17:42
Running Sound Server
17:42
- acception connections on port 16001
17:42
/dev/dsp: No such file or directory
17:42
aumix: error opening mixer
17:42
ideas?
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17:45
<edgarin>
jammcq, hi
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18:29
<edgarin>
Hi
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23:27
<ball>
Could ltsp be used to boot diskless X workstations, without resorting to NFS?
23:27
s/workstations/terminals/
23:28
<vagrantc>
in theory, sure.
23:30
<ball>
I suppose I need to sit down and figure out how much stuff is actually required, to see if I can fit it in a ramdrive.
23:31
<vagrantc>
that sounds more like a pxes sort of thing.
23:32
<ball>
I'll have to look that up. I understand that PXE is some sort of fix for the PC's lack of firmware that can netboot.
23:32
What does the S signify?
23:32
<vagrantc>
pxes.sf.net
23:32
<ball>
thanks
23:33
That sounds ideal, thanks for the pointer.
23:33
<vagrantc>
i hae no idea why they call it pxes ... i don't know if it has anything to do with PXE or not.
23:34
<ball>
ok
23:34
<vagrantc>
but yes, PXE is used for network boot on x86/amd64 architecture...
23:38
<ball>
pxes looked ideal when I read the first half of the overview, now I'm not so sure.
23:39
<vagrantc>
what exactly do you want?
23:40
<ball>
Ideally? A kernel with an embedded ramdisk image that includes an X server, perhaps Blackbox for a window manager and not much else.
23:41
No (accessible) shell, cli stuff, applications.
23:41
Just the bare minimum.
23:41
<vagrantc>
surely you want some application... a window manager isn't very useful without ... windows to manage...
23:42
<dberkholz>
the rest across xdmcp, i suppose
23:42
but then you wouldn't even have a wm..
23:42
<ball>
dberkholz: keep the wm on the machine running the clients you think?
23:43
<dberkholz>
ball: i'm still not clear on what your goal is
23:45
<ball>
dberkholz: I would like a few X terminals and just one or two (more powerful, modern) boxen on which to run the application software (X clients).
23:46
dberkholz: Ideally I'd like to netboot the X terminals so that I don't have to mess with disk drives in them.
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23:46
<ball>
(disks die, are noisy and generally a pain in the bum)
23:46
<vagrantc>
so, my question is at that point ... what's wrong with NFS or pxes ?
23:47
<ball>
I've not tried it myself, but I'm told that NFS is a can of worms, not least from a security standpoint.
23:48
<vagrantc>
well, all protocols available for network boot are going to have their security flaws ...
23:49
in general, read-only NFS is reasonably secure.
23:50
<ball>
vagrantc: That's reassuring. Perhaps I'll have a proper look at it then.
23:50
<vagrantc>
if you really don't want NFS, pxes (or something similar) would probably be your next best bet.
23:51
<ball>
Hmm... lesser of two evils then? :-)
23:51
<vagrantc>
well, LTSP typically uses both tftp and NFS, whereas pxes only uses tftp ...
23:51
i think
23:52
<ball>
kernel via tftp, which then mounts a filesystem over nfs?
23:52
<vagrantc>
in the end, there's no real way to do totally secure network booting, though. the whole premise relies upon "somebody give me an IP and a kernel please"
23:52
and whoever answers, well, you're trusting them.
23:53
ball: yeah, that's basically the process for LTSP ...
23:53
<ball>
I suppose the protocols were developed in more innocent times ;-)
23:54
vagrantc: okay, that gives me a better idea of how ltsp works and how I might approach my little project.
23:55
<vagrantc>
well, honestly, how could you develop a secure mechanism to do remote download of the OS without maintaining data on each individual machine ?
23:55
<ball>
vagrantc: That's a very good question.
23:56
<vagrantc>
you could maintain a small flash disk on each machine, but if you do a kernel update, well ... you have to update every machine.
23:56
<dberkholz>
you'd have to flash a valid ip into the firmware
23:56
<vagrantc>
ip can be spoofed
23:57
<dberkholz>
ok, add in some key auth
23:57
<ball>
I think MAC addresses can be too.
23:57
<vagrantc>
dberkholz: right ...
23:57
and then, if the key auth tokens need to be updated ... you have to update all the firmwares ...
23:58
<dberkholz>
you can't have security with no hassle
23:58
<vagrantc>
right.
23:58
<dberkholz>
gotta find the balance you're willing to settle with
23:58* ball nods in agreement
23:59
<vagrantc>
it would probably be good to explore some of these ideas to improve the security of network boot beyond the current state ...