IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 21 January 2007 (all times are UTC)
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| 07:51 | <cliebow_> ogra: you netbooted a g4 ibook?
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| 07:52 | <ogra> veyes
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| 07:52 | err
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| 07:52 | yes
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| 07:52 | <cliebow_> my setup boots a g3..plug in a g4..goes nowhere..cant remeber boot-file name
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| 07:53 | in opfw i hard coded it..still no go
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| 07:55 | same vendor-encapsulated-options?
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| 07:55 | <ogra> with the file i pointed you to one of the last days
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| 07:55 | <cliebow_> ill look again..seemed just like mine
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| 07:56 | <ogra> you need the yaboot.conf in the toplevel tftp dir iirc
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| 07:56 | i think yaboot cant handle subdirs for it
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| 07:56 | <cliebow_> they all reside in same place..but tftp just wont start
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| 07:57 | <ogra> thats weird
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| 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)
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| 07:58 | <cliebow_> g3 boots like lightning..well err..boots fine with a crossover to my lappie
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| 07:59 | i capured and printed initial packets for g3..and g4..and g3 to osx server for comparison..
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| 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
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| 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
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| 11:21 | <edgarin> mathesis, que tal?
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| 11:22 | <mathesis> sabes a que se debe que no encuentre el server dhcp los clientes y tire el error No }
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| 11:22 | No IP address
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| 11:22 | <edgarin> no esta corriendo dhcp
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| 11:22 | y si esta corriendo
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| 11:22 | esta mal configurado
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| 11:22 | revisa bien la Mac Address
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| 11:22 | y que el cable de red
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| 11:22 | de la estacion no se sea cruzado
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| 11:22 | <mathesis> te paso mi dhcp
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| 11:23 | <edgarin> ok
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| 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?
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| 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
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| 15:09 | jammcq:you familiar with arp..how it affcts netboot?
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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!
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| 17:42 | I have a station LTSP with ISA Sound card finally I found the correct module for this sound card is cs4236
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| 17:42 | now when I turn on the station, the station show a message:
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| 17:42 | Running Sound Server
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| 17:42 | - acception connections on port 16001
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| 17:42 | /dev/dsp: No such file or directory
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| 17:42 | aumix: error opening mixer
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| 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?
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| 23:27 | s/workstations/terminals/
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| 23:28 | <vagrantc> in theory, sure.
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| 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.
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| 23:31 | <vagrantc> that sounds more like a pxes sort of thing.
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| 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.
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| 23:32 | What does the S signify?
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| 23:32 | <vagrantc> pxes.sf.net
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| 23:32 | <ball> thanks
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| 23:33 | That sounds ideal, thanks for the pointer.
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| 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.
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| 23:34 | <ball> ok
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| 23:34 | <vagrantc> but yes, PXE is used for network boot on x86/amd64 architecture...
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| 23:38 | <ball> pxes looked ideal when I read the first half of the overview, now I'm not so sure.
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| 23:39 | <vagrantc> what exactly do you want?
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| 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.
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| 23:41 | No (accessible) shell, cli stuff, applications.
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| 23:41 | Just the bare minimum.
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| 23:41 | <vagrantc> surely you want some application... a window manager isn't very useful without ... windows to manage...
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| 23:42 | <dberkholz> the rest across xdmcp, i suppose
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| 23:42 | but then you wouldn't even have a wm..
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| 23:42 | <ball> dberkholz: keep the wm on the machine running the clients you think?
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| 23:43 | <dberkholz> ball: i'm still not clear on what your goal is
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| 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).
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| 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)
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| 23:46 | <vagrantc> so, my question is at that point ... what's wrong with NFS or pxes ?
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| 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.
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| 23:48 | <vagrantc> well, all protocols available for network boot are going to have their security flaws ...
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| 23:49 | in general, read-only NFS is reasonably secure.
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| 23:50 | <ball> vagrantc: That's reassuring. Perhaps I'll have a proper look at it then.
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| 23:50 | <vagrantc> if you really don't want NFS, pxes (or something similar) would probably be your next best bet.
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| 23:51 | <ball> Hmm... lesser of two evils then? :-)
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| 23:51 | <vagrantc> well, LTSP typically uses both tftp and NFS, whereas pxes only uses tftp ...
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| 23:51 | i think
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| 23:52 | <ball> kernel via tftp, which then mounts a filesystem over nfs?
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| 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"
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| 23:52 | and whoever answers, well, you're trusting them.
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| 23:53 | ball: yeah, that's basically the process for LTSP ...
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| 23:53 | <ball> I suppose the protocols were developed in more innocent times ;-)
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| 23:54 | vagrantc: okay, that gives me a better idea of how ltsp works and how I might approach my little project.
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| 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 ?
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| 23:55 | <ball> vagrantc: That's a very good question.
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| 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.
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| 23:56 | <dberkholz> you'd have to flash a valid ip into the firmware
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| 23:56 | <vagrantc> ip can be spoofed
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| 23:57 | <dberkholz> ok, add in some key auth
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| 23:57 | <ball> I think MAC addresses can be too.
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| 23:57 | <vagrantc> dberkholz: right ...
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| 23:57 | and then, if the key auth tokens need to be updated ... you have to update all the firmwares ...
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| 23:58 | <dberkholz> you can't have security with no hassle
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| 23:58 | <vagrantc> right.
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| 23:58 | <dberkholz> gotta find the balance you're willing to settle with
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| 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 ...
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