IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 27 May 2012 (all times are UTC)
| 00:38 | <msignor> vagrantc: seems like i broke it now
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| 00:39 | i get the ubuntu boot screen.. but never get a login, probably because i loaded updates and chose the wrong gdm or ldm
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| 00:41 | <vagrantc> hm.
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| 00:46 | hrm. getltscfg is resistant to hardening....
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| 00:46 | probably need to switch to an autofoo makefile or something.
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| 02:06 | <vagrantc> alright, managed to trick getltscfg into using hardening flags... would still be better to rewrite the Makefile or turn it into autofoo.
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| 02:35 | Parker955_Away is now known as Parker955 | |
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| 03:57 | alkisg has joined IRC (alkisg!~alkisg@ubuntu/member/alkisg) | |
| 03:59 | <vagrantc> alkisg: whee!
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| 03:59 | alkisg: is it sunday yet?
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| 03:59 | <alkisg> Heeelllo :)
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| 03:59 | Yup, work day for me!
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| 03:59 | So, want me to rewrite getltscfg in shell? :P
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| 03:59 | <vagrantc> hah!
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| 04:00 | i got getltscfg sorted out
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| 04:00 | so, ltsp-update-image borks when using the create-fs-image plugin
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| 04:00 | <alkisg> Let me see yesterday's logs, I read about the "solution" but not the problem
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| 04:00 | <vagrantc> er, ltsp-update-kernels
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| 04:01 | alkisg: i made a patch for getltscfg's Makefile so that hardened build flags would work properly
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| 04:01 | <alkisg> What does that mean? I haven't heard the "hardened" in programming... some restrictive gcc options?
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| 04:01 | *word
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| 04:01 | <vagrantc> alkisg: yup
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| 04:02 | https://wiki.debian.org/Hardening
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| 04:02 | <alkisg> Cool, since we're making changes to it, would anyone mind if I removed the restrictions that (1) [default] must be on top, and (2) sections must not be empty?
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| 04:02 | <vagrantc> it's the cool new thing ... though in theory ubuntu's been doing it for ages
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| 04:02 | alkisg: first i need sanity restored to ltsp-update-kernels :P
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| 04:02 | <alkisg> I mean, that if no section exists, [default] could be assumed
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| 04:02 | Hehe, ok
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| 04:03 | What's the problem there exactly?
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| 04:03 | <vagrantc> alkisg: pullinng the kernels and pxelinux configs from thhe image hurts.
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| 04:03 | look, my typing's even off-kilter
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| 04:03 | <alkisg> Lets prefer pulling them from the dir first
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| 04:03 | <vagrantc> that'd fix it... i was thinking of committing them myself, but i wanted to ask you first
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| 04:03 | <alkisg> Is the only problem pxelinux.cfg?
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| 04:04 | If we preserved user changes in pxelinux.cfg/default, would that be better?
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| 04:04 | <vagrantc> it also breaks the create-fs-image plugin
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| 04:04 | becausse it tries to mount the image whiile it's already mounted
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| 04:04 | <alkisg> ...why would that hurt though?
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| 04:04 | It's possible to mount an image twice
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| 04:04 | Let me open it...
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| 04:05 | <vagrantc> well, it causes mount to error out and ltsp-build-client fails
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| 04:05 | <alkisg> What error message?
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| 04:07 | * vagrantc re-runs to watch | |
| 04:07 | <alkisg> Whoo a lot of commits yesterday
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| 04:07 | <vagrantc> very small, mostly
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| 04:07 | still today for me :)
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| 04:08 | <muppis> vagrantc, it was 6.30 when my kids waas awake.. :)
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| 04:08 | * alkisg refers to days in UTC time :P | |
| 04:09 | <vagrantc> alkisg: meh. all i get is "
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| 04:09 | "Command exited with non-zero status 1"
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| 04:09 | <alkisg> ...
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| 04:10 | Are you using any unsupported command line options?
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| 04:10 | <vagrantc> unsupported by what?
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| 04:11 | <alkisg> by ltsp-update-kernels
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| 04:11 | UPDATE_IMAGE_OPTIONS="-a ${CHROOT}" ==> could become: UPDATE_IMAGE_OPTIONS="${CHROOT}"
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| 04:11 | <vagrantc> hmmmm... this time it woorked fine.
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| 04:11 | <alkisg> ...wait, 035-create-fs-image doesn't call ltsp-update-image nor ltsp-update-kernels now, does it?
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| 04:12 | <vagrantc> alkisg: oh, i fixed that wrong ... i just removed the -a CHROOT stuff entirely.
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| 04:12 | alkisg: ltsp-update-kernels is called from common/095-update-kernels
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| 04:13 | <alkisg> 035? Is that late enough?
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| 04:13 | It should be after 035-create-fs-image
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| 04:14 | <vagrantc> it used to be late enough
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| 04:14 | <alkisg> mount -o loop $FS_IMAGE_FILE.new $ROOT ==> when does that get unmounted btw?
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| 04:15 | <vagrantc> there is (was?!) a trap call to unmount stuff
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| 04:15 | <alkisg> Only if you use mark_mount
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| 04:15 | ...or not?
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| 04:16 | <vagrantc> alkisg: server/ltsp-build-client: on_exit function
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| 04:16 | which is called with trap
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| 04:17 | alkisg: it seems it is ltsp-update-sshkeys that's killing it
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| 04:17 | <alkisg> OK, although we should probably move to using "mark_mount" so that the unmount works even before you set CHROOT_MOUNTED
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| 04:18 | <vagrantc> mark_mount is the new kid
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| 04:18 | <alkisg> ...why would ltsp-update-kernels interfere with ltsp-update-sshkeys though? :-/
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| 04:19 | <vagrantc> i don't thinnk it's ltsp-update-kernels fault anymore
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| 04:19 | it spits out "No LTSP chroots found, please run ltsp-build-client"
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| 04:19 | which is kinda funny, cuz... well, i'm in the middle of running ltsp-build-client :)
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| 04:21 | it's running from 030-update-sshkeys
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| 04:21 | although, it should still be mounted at that point
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| 04:21 | * vagrantc is confused | |
| 04:22 | <vagrantc> and on_exit fails to unmount...
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| 04:22 | ugh.
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| 04:22 | <alkisg> I saw that "sync" is necessary sometimes before unmount
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| 04:23 | umount_marked should be more efficient
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| 04:23 | We could at least copy some of its code in the ltsp-build-client trap
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| 04:23 | <vagrantc> hah.
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| 04:23 | i'm building a chroot without ssh
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| 04:24 | <alkisg> Aaah ok :)
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| 04:24 | <vagrantc> so ltsp-update-sshkeys fails if you don't install ssh (i.e. ltsp-client-core only)
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| 04:24 | seems like it ought to handle that a little better.
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| 04:24 | <alkisg> We do need better error handling/messages in a lot of places...
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| 04:25 | <vagrantc> this "set -e" business will improve the code, but at what cost to our sanity :)
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| 04:26 | * vagrantc forgot about the --debug mode | |
| 04:26 | <vagrantc> which isn't hugely useful except to figure out exactly which plugin is failing
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| 04:26 | how hard would it be to specify a plugin name to run with "set -x"
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| 04:26 | <alkisg> Should be quite easy
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| 04:27 | <vagrantc> ok, back to my original problem...
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| 04:28 | mount: /dev/loop1 already mounted or /tmp/tmp.fsgsdgsh busy
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| 04:28 | "Could not mount /tmp/tmp.dgsdgsdgfsd
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| 04:30 | so mark_mount tried to mount it, and failed ...
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| 04:30 | <alkisg> Hmm it seems that loop devices can't be mounted twice
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| 04:30 | <vagrantc> ta-da.
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| 04:30 | <alkisg> 2 easy ways around it:
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| 04:31 | Either run ltsp-update-kernels at a later stage, when it's unmounted,
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| 04:31 | or have it prefer the dirs instead of the images
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| 04:31 | Let's do the second one for now?
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| 04:31 | <vagrantc> if it preferred the dirs instead of the images, it would make testing updates not require running ltsp-update-image
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| 04:33 | and ltsp-update-kernels bailing when /etc/ssh isn't present ... hrm.
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| 04:33 | <alkisg> ...I don't think it checks /etc/ssh...
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| 04:43 | <vagrantc> alkisg: by the way, successfully built an Ubuntu precise chroot by specifying "VENDOR=Ubuntu ltsp-build-client ..."
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| 04:43 | <alkisg> Whoo!
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| 04:43 | I'll try to do the same for debian chroots from ubuntu
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| 04:43 | <vagrantc> after a few fixes
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| 04:43 | now committed
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| 04:44 | alkisg: test -d "$chroot/etc/ssh" || continue
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| 04:44 | you'd think thata wouldn't kill it, though ...
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| 04:45 | ah, that's not what kills it
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| 04:45 | it's that there are no chroots ...
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| 04:45 | die "No LTSP chroots found, please run ltsp-build-client"
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| 04:45 | that's what kills it
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| 04:45 | <alkisg> But why? Don't you mount the fs image under /opt/ltsp/<arch> ?
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| 04:46 | Or, why did it work before?
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| 04:46 | Or if you want to mount it in e.g. /tmp, you can run BASE=/tmp ltsp-update-sshkeys
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| 04:47 | <vagrantc> alkisg: it is mounted, but it's just not got /etc/ssh ... so ltsp-update-sshkeys doesn't think it's a valid chroot, and it finds no valid chroots, and "exit 1" is the end result.
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| 04:47 | <alkisg> Aah ok that's proper response then
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| 04:47 | <vagrantc> sort of.
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| 04:48 | <alkisg> Maybe ltsp-update-sshkeys || true ?
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| 04:48 | <vagrantc> it's a valid use-case to install LTSP without ssh
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| 04:48 | <alkisg> Sure, but ltsp-update-sshkeys should return 1
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| 04:48 | <vagrantc> right.
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| 04:48 | <alkisg> ltsp-build-client can just ignore the result
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| 04:48 | <vagrantc> alkisg: yeah, that's the simplest workaround
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| 04:48 | <alkisg> But please put a comment on why the || true is needed
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| 04:49 | Or check if etc/ssh exists before calling it
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| 04:49 | <vagrantc> what about checking for something else, like /bin/true ?
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| 04:50 | and then just creating /etc/ssh in the chroot?
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| 04:50 | <alkisg> I don't think so, ltsp-update-sshkeys shouldn't create /etc/ssh, it should fail, because it doesn't succeed in its purpose
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| 04:51 | Ah
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| 04:51 | Well we may consider that it succeeds if it copies the file even if ssh isn't installed, ok
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| 04:51 | The user might install ssh later on... sounds fine
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| 04:52 | <vagrantc> heh. i just wrote up my rationale on using || true :)
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| 04:55 | alkisg: so, the other outstanding issue is ... do i have ltsp-build-client write BOOTPROMPT_OPTS to update-kernels.conf when using --create-fs-image or --squashfs-image ?
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| 04:56 | <alkisg> vagrantc: for nbd booting in debian? I think so, yeah
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| 04:59 | <vagrantc> now both varieties can at least use the same boot prompt options
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| 05:04 | <alkisg> Are you using nbdroot=, or ROOTPATH?
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| 05:04 | (dhcp)
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| 05:05 | <vagrantc> alkisg: i need to use nbdroot=/opt/ltsp/$ARCH
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| 05:05 | <alkisg> vagrantc: why?
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| 05:06 | <vagrantc> alkisg: i think there's a bug in the ldm screen script that i may have fixed ... so long-term, i probably don;t need it
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| 05:06 | <alkisg> ok
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| 05:06 | <vagrantc> or maybe worked around and forgot
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| 05:07 | alkisg: basically, if you don't specify nbdroot on the commandline, the "old NBD image, rebooting" feature kicks in
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| 05:07 | <alkisg> Whoah
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| 05:07 | <vagrantc> i tracked it down at one point, but i guess i didn't commit a fix
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| 05:10 | or i did, and some other issue is triggering it
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| 05:10 | <alkisg> I don't like having to mount the nbd image to check if a reboot is required
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| 05:10 | Why don't we put that info in ldminfod?
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| 05:12 | <vagrantc> yeah, i always thought that was a bit much
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| 05:12 | <alkisg> People also see the disconnects in the server's syslog and think there's a problem there...
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| 05:13 | <vagrantc> what would go in ldminfod?
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| 05:14 | <alkisg> For minimal changes, it could echo the sha1sum of each image?
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| 05:14 | dd if=/dev/nbd9 of=/dev/stdout bs=64 count=1 2> /dev/zero | sha1sum - ==> for each image instead
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| 05:14 | <vagrantc> those are kind of expensive to calculate for a large image, no?
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| 05:14 | <alkisg> bs=64 count=1
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| 05:14 | <vagrantc> ah, just the header
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| 05:14 | <alkisg> It should have a lot less overhead than launching an nbd-server process
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| 05:16 | <vagrantc> it also isn't just for ldm that that should happen
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| 05:16 | other screen scripts should also maybe reboot
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| 05:16 | <alkisg> ...the generic lts.conf+ldminfod+... daemon would help a lot in this case
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| 05:18 | <vagrantc> although other scripts may or may not have a way to communicate what's happening to the usesr.
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| 05:18 | <alkisg> OK let's go for a quick fix for now
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| 05:19 | So the problem is that ROOTPATH isn't saved as "NBD_ROOT_HOST" etc?
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| 05:19 | <vagrantc> i'm trying to actually see the problem ...
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| 05:19 | <alkisg> Also, "nbd-client $NBD_ROOT_HOST /dev/nbd9 -N $NBD_ROOT_NAME" ==> if that fails, the script should exit
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| 05:19 | E.g. nbd-client $NBD_ROOT_HOST /dev/nbd9 -N $NBD_ROOT_NAME || return 0
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| 05:20 | Does it actually mount the nbd image, or does it fail to do so because of missing vars?
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| 05:20 | * vagrantc is having trouble reproducing it | |
| 05:21 | <vagrantc> i've troubleshot so many issues in the last week ... gah. here's another one.
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| 05:23 | so something's killing nbd-client on reboot...
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| 05:26 | * alkisg starts with the ubuntu packaging so that he's able to actually test these things... :) | |
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| 05:33 | <vagrantc> alkisg: so, it's getting NBD_ROOT_NAME=/dev/nbd0
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| 05:33 | alkisg: instead of NBD_ROOT_NAME=/opt/ltsp/i386
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| 05:33 | i swear i had a patch for this
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| 05:35 | <vagrantc> 2237 ...
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| 05:35 | <alkisg> !ltsp-debian-packaging
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| 05:35 | <ltsp> alkisg: Error: "ltsp-debian-packaging" is not a valid command.
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| 05:35 | <alkisg> !pkg-debian
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| 05:35 | <ltsp> alkisg: Error: "pkg-debian" is not a valid command.
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| 05:35 | <alkisg> ...
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| 05:37 | <vagrantc> https://code.launchpad.net/~vagrantc/ltsp/ltsp-debian-packaging
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| 05:37 | which includes a link to the real location
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| 05:37 | <alkisg> Ah ok
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| 05:38 | <vagrantc> and it is out of date at the moment
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| 05:38 | * alkisg was trying to see if there were any changes in the real location not yet synced to launchpad | |
| 05:38 | <alkisg> !pkg-ltsp-debian
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| 05:38 | <ltsp> alkisg: pkg-ltsp-debian: https://code.launchpad.net/~vagrantc/ltsp/ltsp-debian-packaging is a mirror of http://anonscm.debian.org/loggerhead/pkg-ltsp/ltsp-debian-packaging/files
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| 05:38 | <alkisg> Yey
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| 05:43 | <vagrantc> that just gives you the browser view ...
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| 05:44 | <alkisg> I do have a local copy of the launchpad branch, I just wanted to check the original tree for unsynced changes
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| 05:44 | <vagrantc> nbd-disconnect is hosed.
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| 05:45 | * vagrantc never liked it | |
| 05:47 | <vagrantc> bah.
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| 05:53 | <alkisg> ...patience!!!
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| 05:53 | <vagrantc> if grep -q '\-N' /proc/$pid/cmdline; then
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| 05:53 | when i execute it manually from the shell, it works....
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| 05:54 | and but for some reason it's executing a different codepath
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| 05:55 | <muppis> If I define a localapp in lts.conf and put it launching automatically in profile as normally done, does get launched as localapp?
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| 05:56 | <vagrantc> alkisg: i've been working on this in all my spare moments for the last week :P
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| 05:56 | alkisg: i've mustered a bit of patience
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| 05:56 | <alkisg> vagrantc: if ROOTPATH is set in the initramfs, and cmdline doesn't contain nbdroot= or nfsroot=, then we should be using that to store NBD_ROOT_HOST etc etc - don't know if we currently do, I'll start with the packaging first...
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| 05:56 | muppis: no
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| 05:57 | <vagrantc> alkisg: there's a bug in init-ltsp.d/04-server that fails to get the right result
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| 05:59 | <vagrantc> alkisg: oh... for some rreason the code in the chroot is not the code in bzr...
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| 06:00 | alkisg: doh! i'm running 5.3.7
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| 06:00 | <alkisg> :)
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| 06:00 | <muppis> alkisg, ok.
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| 06:01 | <vagrantc> i knew i fixed that.
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| 06:01 | the nbd connection thing is still silly...
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| 06:01 | <alkisg> We need a (long) TODO list
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| 06:02 | <vagrantc> i think my nbd-disconnect issues are also likely related ...
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| 06:02 | i need to get something i can upload to debian soon so i can stop accidentallly testing old versions!
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| 06:03 | <alkisg> I'll work most of the day in ltsp, so I should be of some help there...
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| 06:11 | vagrantc: in ubuntu's debian/control, ltsp-server depends on ${shlibs:Depends}, while debian's doesn't, which one's correct?
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| 06:12 | <vagrantc> alkisg: there shouldn't be shared libraries in an arch: all package
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| 06:12 | <alkisg> ty
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| 06:13 | <vagrantc> or rather, dependencies on shared libraries
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| 06:21 | * vagrantc sighs | |
| 06:21 | <alkisg> meh I really see no reason why ubuntu's packaging should have all those differences
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| 06:22 | Why can't we just include the doc/ dir?!
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| 06:22 | * alkisg is temped to do a clean start from the debian's debian/ dir... | |
| 06:23 | <vagrantc> for reasons that totally perplex me... even creating update-kernels.conf very early in the process, it still defaulted to NFS ...
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| 06:24 | running update-kernels later manually still works
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| 06:25 | <alkisg> vagrantc: I think it's because the kernel postinst script is not ran, there's no kernel update involved... or do we call that manually?
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| 06:25 | <vagrantc> alkisg: it should still run on install
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| 06:25 | <alkisg> Is the kernel installed after ltsp-client?
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| 06:26 | <vagrantc> yup
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| 06:29 | it seemed to get created when ltsp-update-image was called
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| 06:29 | the pxelinux.cfg anyways
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| 06:34 | <Hyperbyte> alkisg, doing a live broadcast from a sports park in Capelle today and tomorrow. :-) International youth (kids up to 13 year) football tournament. :-)
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| 06:35 | <alkisg> Hyperbyte: you have 2 good jobs, time to look for someone to spend all the money you're making with :D
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| 06:41 | * alkisg pushed an ltsp-config change to check with pgrep if nbd-server is running or not, as recent nbd-server versions ship an /etc/nbd-server/config so we can't rely on that anymore | |
| 06:41 | <vagrantc> alkisg: ok, so apparently, somehow running the kernel postinst ignores the BOOTPROMPT_OPTS
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| 06:42 | <alkisg> ...
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| 06:43 | vagrantc: ah it has a different name there
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| 06:43 | So the .conf file isn't sourced
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| 06:43 | <vagrantc> the file is present ... running update-kernels directly works properly ... dpkg-reconfigure linux-image-FOO regenerates with the defaults...
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| 06:43 | <alkisg> It tries to source /etc/ltsp/ltsp-update-kernels.conf instead
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| 06:43 | <vagrantc> aha!
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| 06:43 | right.
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| 06:45 | i guess instead of symlinking, could put a wrapper at that point.
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| 06:45 | <alkisg> Or just re-launch it:
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| 06:45 | case "$0" in
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| 06:45 | /etc/kernel/post*.d*) QUIET=true exec /usr/share/ltsp/... ;;
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| 06:45 | esac
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| 06:45 | "$@"
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| 06:47 | That case could also be moved a little above so that we don't source the functions etc twice
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| 06:48 | <Hyperbyte> alkisg, actually, the radio presenting I do, and task as program director, for Radio Capelle is volunteer work. Radio Capelle is a local station, for the city I live in, with very low budget. :) So it's just a bunch of harmless fun, doesn't make me money. :P
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| 06:48 | alkisg, only the radio production work I do for Radio 1 (national radio) is paid.
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| 06:49 | <alkisg> Ah, ok :)
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| 06:49 | <Hyperbyte> So basically I have three jobs. :P Did I also mention I recently started my own company? :P
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| 06:49 | Where does he get the time!
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| 06:49 | <alkisg> Hahaha
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| 06:49 | What kind of company?
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| 06:50 | <Hyperbyte> Absence of a social life does wonders.
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| 06:50 | alkisg, basically some IT consulting/website development/radio production/whatever...
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| 06:50 | Mainly I just want to be able to send people bills for random jobs I do. :P
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| 06:54 | * vagrantc heads out | |
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| 07:36 | <uskerine> hi
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| 07:36 | i am trying to get some thin clients working in xubuntu, i did:
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| 07:36 | apt-get install ltsp-server-standalone openssh-server
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| 07:37 | then ran ltsp-build-client and service nbd-server restart
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| 07:37 | what's next? any recommended website?
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| 07:43 | <alkisg> uskerine: which xubuntu version, and what errors are you getting?
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| 07:44 | <uskerine> xubuntu 12.04
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| 07:44 | i just get PXE-E53: No boot filename received in the screen of my thin client
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| 07:44 | i installed it few months ago in LUBUNTU but I lost my notes :(
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| 07:45 | <alkisg> Which architecture is the server and the chroot? both i386?
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| 07:45 | <uskerine> both i386
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| 07:45 | so i did not use -arch while ltsp-build'ing
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| 07:45 | <alkisg> Do you have another dhcp server in your network?
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| 07:45 | <uskerine> yes i do
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| 07:45 | <alkisg> In the same network where the ltsp clients are supposed to boot?
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| 07:46 | <uskerine> unfortunatelly yes
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| 07:46 | <alkisg> Then you shouldn't be using ltsp-server-standalone
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| 07:46 | Can you modify the other dhcp server to provide a boot filename?
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| 07:46 | Or is it e.g. an unconfigurable router?
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| 07:46 | <uskerine> no, it is a simple router-based dhcp
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| 07:46 | <alkisg> !proxydhcp
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| 07:46 | <ltsp> alkisg: I do not know about 'proxydhcp', but I do know about these similar topics: 'proxy-dhcp'
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| 07:46 | <alkisg> !proxy-dhcp
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| 07:46 | <ltsp> alkisg: proxy-dhcp: https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP
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| 07:47 | <alkisg> Read that page so that you remove isc-dhcp-server and use dnsmasq instead
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| 07:47 | <uskerine> alkisg, just in case it could be easier
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| 07:47 | i am just doing a test where both dhcp router and the ltsp box are on the same subnet
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| 07:48 | however, i will then install on a real server with more than one ethernet interface, so i could isolate the network segment
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| 07:48 | <alkisg> Ah ok then
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| 07:48 | <uskerine> what would you recommend?
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| 07:48 | <alkisg> Configure your existing server to have 2 IPs from network manager
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| 07:48 | One == dhcp, and the second == static, 192.168.0.1
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| 07:49 | Or do you have 2 NICs already? (e.g. a wlan and a wired one, or 2 wired ones?)
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| 07:50 | Or, test with a virtualbox client in a virtual nic
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| 07:50 | That way you won't have to change your setup once you move to the real server
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| 07:50 | <uskerine> no in this test server i only have one ethernet
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| 07:51 | i have read the web page you sent
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| 07:51 | it seems very difficult, plus it would allow me to put everything in the same network segment
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| 07:51 | it does not seem very difficult i mean
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| 07:51 | <alkisg> Decide based on your final setup
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| 07:52 | If you want a 1-nic setup with an external, unmodifiable dhcp-server, then proxy-dhcp is the way to go
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| 07:52 | If you want a 2-nic setup, keep isc-dhcp-server
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| 07:52 | <uskerine> i will try the proxydhcp, as there could be seats with laptops
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| 07:52 | <alkisg> ok
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| 07:53 | <uskerine> so no matter how many nics i have, at the end the laptop should be serverd by the "central" dhcp
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| 07:54 | <alkisg> Yes in those cases if the "central" dhcp can't be configured to send a boot filename, a proxy-dhcp helps a lot
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| 07:54 | <uskerine> another alternative would be to turn off the router dhcp and make the ltsp server being the main dhcp server
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| 07:55 | for both thin clients and regular computers
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| 07:55 | <alkisg> Yes, but if your ltsp server's down, laptops won't have internet access
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| 07:55 | <uskerine> yes i guess it is better to use proxy then
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| 07:55 | i will give it a try then
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| 07:55 | thanks alkisg
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| 07:56 | <alkisg> uskerine: just be careful not to do the steps that refer to < 12.04 versions in that page
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| 07:56 | Many people have edited that page and it's a bit of mess now, it'll be much easier in 12.10
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| 07:56 | <uskerine> ok i will pay attention to 12.04
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| 07:56 | thanks
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| 07:58 | https://launchpad.net/~ts.sch.gr/+archive/ppa
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| 07:58 | which dnsmasq should I download? there are three folders
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| 07:59 | <alkisg> None, that's for <12.04 versions :)
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| 07:59 | <uskerine> *Note: 12.04 users should have a good working dnsmasq program already in the repositories.
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| 07:59 | i saw it!
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| 07:59 | <alkisg> (actually for < 9.10)
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| 07:59 | <uskerine> ok thanks
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| 07:59 | so apt-get install dnsmasq will fit, right?
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| 07:59 | <alkisg> Yup
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| 08:00 | <uskerine> the web site suggest you to install ltsp-server and then remove purge ltsp-server-standalone
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| 08:00 | is that correct?
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| 08:00 | I mean the roder
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| 08:01 | <alkisg> Yes
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| 08:07 | <uskerine> /opt/ltsp/i386/boot/pxelinux.cfg
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| 08:07 | /var/lib/tftpboot/ltsp/i386/pxelinux.cfg
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| 08:07 | what is in /opt and what is in /var
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| 08:07 | (i am in adjusting pxelinux.cfg step)
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| 08:07 | and what am I actually doing?
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| 08:08 | I mean by doing this: (cat <<EOF
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| 08:08 | ipappend 3
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| 08:08 | EOF
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| 08:08 | ) | sudo tee -a /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 08:12 | <muppis> Adding line containing 'ipappend 3' to /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default as last line.
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| 08:14 | <uskerine> i mean, why and what it does
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| 08:14 | i can live without knowing, but i like to know "why"
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| 08:14 | (i already knew the command was adding a line)
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| 08:14 | <muppis> :D
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| 08:15 | IIRC, it tells to dhcp client not to rere
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| 08:16 | IIRC, it tells to dhcp client not to re-request the IP and instead use already obtained by pxe.
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| 08:18 | <uskerine> ok
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| 08:18 | thanks
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| 08:18 | good
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| 08:18 | the thin client it is loading
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| 08:18 | :)
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| 08:19 | but i got busybox console
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| 08:19 | | |
| 08:19 | i saw the ubuntu screen loading
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| 08:19 | then i got a console
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| 08:19 | prompt is initramfs)
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| 08:20 | <alkisg> cat /proc/cmdline
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| 08:21 | <uskerine> where do i run it, server or thin client?
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| 08:21 | thin client:
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| 08:22 | <alkisg> client
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| 08:24 | <uskerine> ro initrd=initrd.img root=/dev/nbd0 init=/sbin/init-ltsp quiet splash plymouth:force-splash vt.handoff=7 nbdroot=:ltsp_i386 BOOT_IMAGE=vmlinuz ip=192.168.10.108:192.168.10.103:192.168.10.1:255.255.255.0 BOOTIF=01-0(MAC ADDRESS)
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| 08:24 | i didn't copy the mac-address
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| 08:24 | 108 is the thin client, 103 is the server
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| 08:24 | what is /proc/cmdline btw?
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| 08:26 | <alkisg> Sorry no time to help with generic knowledge I'm also programming now, but test if your nbd-server is running
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| 08:26 | <alkisg> pgrep nbd-server on your ltsp server
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| 08:27 | <uskerine> it is, i get pid
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| 08:28 | <alkisg> ls -l /opt/ltsp/images/i386.img
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| 08:29 | <uskerine> -rw-r--r-- 1 root root 265867264 May 27 09:16 /opt/ltsp/images/i386.img
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| 08:29 | <alkisg> grep nbd /var/log/syslog
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| 08:29 | <uskerine> i did the ltsp-build before the dnsmasq and the ltsp.conf file (just in case it could be relevant)
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| 08:30 | <uskerine> http://pastebin.com/raw.php?i=AAMdprps
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| 08:31 | <alkisg> uskerine: the problem is "permission denied"...
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| 08:31 | cat /etc/nbd-server/conf.d/ltsp_i386.conf
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| 08:32 | <uskerine> [ltsp_i386]
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| 08:32 | exportname = /opt/ltsp/images/i386.img
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| 08:32 | readonly = true
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| 08:32 | <alkisg> uskerine: run the `ls -l /opt/ltsp/images/i386.img` as a simple user, not root, to check for permission problems
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| 08:33 | <uskerine> memmanuel@optiplex-alfa:~$ ls -l /opt/ltsp/images/i386.img
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| 08:33 | ls: cannot access /opt/ltsp/images/i386.img: Permission denied
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| 08:33 | <alkisg> Right, so check the dirs, you have one of them not readable by users
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| 08:33 | <uskerine> i will check permissions
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| 08:33 | <alkisg> E.g. /opt
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| 08:33 | <uskerine> ls -ld ltsp/
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| 08:33 | drwx------ 4 root root 4096 May 27 09:13 ltsp/
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| 08:33 | here it is
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| 08:34 | i guees that should be rwxr--r--
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| 08:34 | right?
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| 08:34 | <alkisg> Why would that be? Do you have some weird umask?
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| 08:34 | No, it should be 755
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| 08:34 | "x" to "others"
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| 08:34 | <uskerine> yes i changed umask as i was trying to get new users be created without being able to access to other folders
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| 08:34 | but i see there are collateral casualites
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| 08:34 | :(
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| 08:35 | <alkisg> Just chmod 700 /home/*
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| 08:35 | <uskerine> yes i will restore umask and do that
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| 08:35 | thanks
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| 08:35 | <alkisg> uskerine: I'm not sure if that affected your existing chroot
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| 08:36 | <uskerine> ok if there is somthing i will reinstall from scratch with correct umasj
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| 08:36 | ok if there is somthing i will reinstall from scratch with correct umask
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| 08:36 | <alkisg> Check /opt/ltsp/i386/* for possible permissions problems, or run ltsp-build-client again after restoring the umask
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| 08:36 | <uskerine> ok i will do that
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| 08:39 | fortunatelly changing the umask was the last thing i did on the server
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| 08:39 | as i guess it could mess up other packages
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| 08:45 | alkisg i can login now, thank you very much i will logout and login to ensure my umask is back again
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| 09:02 | <uskerine> hi again, for some reason only my previous user can login through the thin client, all other users (including freshly ones created that can perfectly log in locally) can not
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| 09:09 | i got the login screen
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| 09:10 | when i type user and password
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| 09:10 | i got verying password for a while
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| 09:10 | then "no response for server, restarting...
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| 09:10 | any idea on which log should I look?
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| 09:18 | I found answer in google: sudo ltsp-update-sshkeys and ltsp-update-image
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| 09:18 | i did it and restarted the thin client, but after the ubuntu load screen i got again the busybox console
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| 09:19 | this time cat /proc/cmdline returns no IPs or MACs
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| 09:19 | ro initrd=initrd.img root=/dev/nbd0 init=/sbin/init-ltsp quiet splash plymouth:force-splash vt.handoff=7 nbdroot=:ltsp_i386 BOOT_IMAGE=vmlinuz
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| 09:19 | alkisg any idea on where should I look for now?
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| 09:20 | <alkisg> uskerine: you didn't follow all the proxydhcp page so you now need to put ipappend 3 manually in pxelinux.cfg/default every time you run ltsp-update-image
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| 09:20 | <uskerine> oh
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| 09:20 | thanks
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| 09:20 | do i have to do that after or before
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| 09:20 | running ltsp-update-image?
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| 09:21 | <alkisg> After
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| 09:25 | <uskerine> did it, it works again
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| 09:25 | but i can not log in for other users :(
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| 09:29 | <alkisg> uskerine: it still works for that one user?
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| 09:30 | <uskerine> yes it does
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| 09:30 | https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/567325
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| 09:30 | it seems it is something that has happened before :(
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| 09:31 | can i redo the install or something like that?
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| 09:31 | can i redo the image or something like that?
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| 09:32 | like sudo ltsp-build-client
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| 09:43 | * uskerine any help is really welcomed, i have ten thin clients bought :( | |
| 09:47 | <uskerine> where could I have a look to the log of the ldm ran in the client (i understand it is ldm the logging manager)
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| 09:47 | ?
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| 09:52 | /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 09:52 | May 27 11:52:03 optiplex-alfa sshd[5641]: User jdoe from 192.168.10.108 not allowed because not listed in AllowUsers
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| 09:57 | adding the users to sshd_config AllowUsers fixed the issue
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| 14:40 | <msignor> Hello All - I am trying to rebuild my ltsp client image from scratch. However, it is failing with an error that the installation ended abnormally
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| 14:40 | fails on "extracting adduser"
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| 14:41 | I am trying to build my chroot on my ubuntu installation, via NFS to my debian ltsp server
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| 14:46 | <msignor> Could anyone direct me in a direction with a link, etc. on how I can use a debian ltsp server with an ubuntu nbd image?
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| 15:07 | <uskerine> hi all, I installed ltsp, but it seems that all the theme & menu configuration I did for the server is ignored by LTSP while serving the thin clients, is there any place where I could understand how and where ltsp actually reads configuration files?
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| 15:08 | <alkisg> msignor: with the really latest updates to LTSP which _will_ be uploaded in unstable next week, you'll be able to do it with
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| 15:08 | VENDOR=Ubuntu ltsp-build-client ...
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| 15:08 | so if you're using wheezy, you might just want to wait 1 week
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| 15:08 | uskerine: how did you configure the theme and menu on the server for all users?
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| 15:08 | <uskerine> using /etc/xdg/xdg-xubuntu mainly
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| 15:08 | <alkisg> And you're using thin clients or fat?
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| 15:09 | <uskerine> i guess thin clients, although i did not specify anywhere if they were thin or fat
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| 15:09 | <alkisg> Thin then.
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| 15:10 | And the theme and menus work fine on the server if you login with other users?
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| 15:10 | <uskerine> yes it works fine
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| 15:10 | actually i get different look&feel login from the server than login from the thin client
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| 15:11 | different menus too
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| 15:11 | <alkisg> Strange. Can you run a ps aux from a thin client and upload it to pastebin?
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| 15:11 | <msignor> alkisg: thanks - I had this working with Squeeze & ubuntu 10.04 nbd image.. but something broken on my debian server and I am trying to work backwards to see how I even had it set up in the first place.
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| 15:11 | * uskerine miss the xdmcp days | |
| 15:11 | <msignor> I don't actually understand where I specify to be a NBD image compared to the NFS image that debian is set up as default
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| 15:12 | <alkisg> uskerine: you can easily use xdmcp in ltsp if that's what you want
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| 15:12 | But you'll miss sound, local devices etc
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| 15:12 | <uskerine> i guess xdmcp is no longer supported by xubuntu
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| 15:12 | and yes, i also need a sip phone client installed later on the thin client
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| 15:12 | <alkisg> Xubuntu uses lightdm afaik and lightdm supports xdmcp
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| 15:13 | msignor: in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 15:13 | <msignor> alkisg - do the files in tftpboot get recreated when the image is made?
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| 15:13 | <alkisg> msignor: when you run ltsp-update-image, yes
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| 15:14 | Or ltsp-update-kernels
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| 15:14 | <msignor> alkisg - i have tftp-hda configured to use /tftpboot as the root
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| 15:15 | My server is a embedded device which has an attached SSD for long term / mass storage. so I have a simlink for /opt/ltsp to /mnt/ssd/ltsp and a symlink for /tftpboot to /mnt/ssd/tftpboot
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| 15:16 | on my ubuntu notebook - I just mapped the local /opt/ltsp to an nfs mount to /mnt/ssd/ltsp but not anything mapped to the /tftpboot - would that be an issue?
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| 15:17 | <alkisg> msignor: not really, but after running ltsp-update-kernels on your ltsp server, what's your pxelinux.cfg/default like?
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| 15:18 | <msignor> I am not sure really - I have not done an update kernels
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| 15:19 | <alkisg> msignor: if you don't have the kernels in your tftp dir, how would the clients boot?
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| 15:20 | <uskerine> alkisg actually when i login in the thin client with a new user, i got a strange message:
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| 15:20 | Welcome to the first start of the panel
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| 15:20 | Choose belo which setuop you want for the first startup
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| 15:20 | "Use Default Config" and "One empty panel"
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| 15:20 | that does not happens when I log in directly into the server for the same new user
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| 15:20 | <alkisg> A ps aux would be the first step to see what goes on in your setup, please upload it to pastebin
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| 15:20 | <msignor> alksig - i do have the kernels there, unfortunately I do not know exactly how they got there... I presume that when i recovered from my backup they were part of that
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| 15:21 | <uskerine> i will paste the psaux
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| 15:21 | <alkisg> msignor: just run ltsp-update-kernels and paste your pxelinux.cfg/default to pastebin
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| 15:21 | <msignor> from the debian server or the ubuntu machine?
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| 15:22 | <alkisg> From the debian server
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| 15:22 | You shouldn't need the ubuntu machine anymore
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| 15:22 | <msignor> alkisg - okay, 1 min
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| 15:23 | <uskerine> alkisg: pastebin.com/raw.php?i=z0vAXPeG
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| 15:25 | <alkisg> uskerine: what's the username for uid=1000 ?
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| 15:25 | <msignor> alkisg : http://pastebin.com/raw.php?i=BSeSqu5X
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| 15:26 | <uskerine> alkisg, that's my account (memmanuel), the new user is 1001 (jdoe)
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| 15:26 | <alkisg> msignor: and what do you get if you try to boot with that?
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| 15:26 | uskerine: so jdoe has logged in from the thin client, and you from the server?
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| 15:26 | <uskerine> right
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| 15:26 | i am writing you from the server
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| 15:26 | and "jdoe" is the one on the thin client
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| 15:27 | which was a freshly recreated new user
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| 15:27 | <msignor> alkisg - failed to connect to nbd server
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| 15:27 | <alkisg> msignor: is your nbd server running on debian?
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| 15:27 | <msignor> yes
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| 15:27 | i can restart it...
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| 15:29 | "message: no configured exports, quitting"
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| 15:29 | <alkisg> So you're missing the nbd configuration
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| 15:29 | Ah
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| 15:29 | Sorry, squeeze
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| 15:29 | What's the output of `grep nbd /etc/inetd.conf` ?
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| 15:29 | <msignor> 12345 stream tcp nowait nobody /usr/sbin/tcpd /usr/sbin/nbdrootd /mnt/ssd/ltsp/images/i386.img
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| 15:30 | <alkisg> The port is wrong there, you were supposed to use 2000
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| 15:30 | Change it and restart openbsd-inetd
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| 15:31 | <msignor> okay, reboot client
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| 15:32 | nice - booted
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| 15:32 | brb 10 min - need to let my dog out, can't think with the barking.
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| 15:42 | <uskerine> aliksg, it works if you put config under /home .config
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| 15:42 | i guess i will have to put everything in skel
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| 15:43 | so new users come with the standard installation
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| 15:47 | i will install another server from scratch in parallel
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| 15:48 | alkisg, how should i disable the ltsp server on this one?
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| 15:48 | just bring down masqdns?
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| 15:48 | additionally, in xubuntu, there is an "install an LTSP server" installation mode
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| 15:48 | is that recommended?
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| 15:48 | (instead of installing a regular one and then adding the packages)
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| 16:03 | <msignor> aliksg: okay - booted in finally :) now, I assume I need to rebuild the image so I can properly configure the NFS homes correct?
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| 19:28 | <alkisg> uskerine: yes, disabling dnsmasq would prevent the ltsp clients from booting from it. And, the ltsp server installation mode is about the same (yet a bit faster) as running ltsp-build-client
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| 19:28 | msignor: use tab to autocomplete user names correctly. No, you don't have to rebuild the image to configure nfs homes
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| 20:19 | <uskerine> thanks alkisg, i reinstalled everything from scratch, and what i did is to set up the configuration of window manager and theme directly on one user account, i will replicate config files under .config in /etc/skel so hopefully settings will be replicated
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| 20:19 | btw, is it possible to force a given resolution?
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| 20:19 | i am getting an awful 1024x768 on a full-hd 1920x1080
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| 20:20 | and second question is, how can i customize ldm so the user can not select session?
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| 20:40 | <uskerine> Hi, does anyone know how to fix a resolution issue in LTSP?
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| 20:41 | I have found the right resolution that can be applied on a terminal through xrandr
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| 20:41 | but now I would like to make this fix permanent
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| 20:57 | <notori0us> hello, #ltsp!
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| 21:03 | <uskerine> hi, any web site to customize lightdm, including specific resolutions through xrandr?
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| 21:04 | that's one of the last things i am missing to complete my LTSP deployment :)
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| 22:53 | <uskerine> hi, my thin client is going to slow in 1920x1080 while browsing the web
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| 22:53 | can google chrome be moved to the thin client?
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| 22:53 | any recommended tutorial or doc page to do it?
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