IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 3 May 2012 (all times are UTC)
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| 01:48 | <highvoltage> the ltsp-discuss list wins the prize for most boring distro-war of 2012 :)
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| 04:58 | * vagrantc waves to alkisg | |
| 04:58 | <alkisg> Hi vagrantc, hi all
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| 04:59 | * vagrantc built an ext4 NBD image, booted to it without the LTSP code ... | |
| 04:59 | <vagrantc> it really works... it's great.
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| 05:00 | and since it's an editable image, don't even need publish-image or any of that,.
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| 05:00 | <alkisg> vagrantc: also try compressed btrfs, I think I'll put support in ltsp-update-image for that ;)
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| 05:00 | I.e. ltsp-update-image --rsync or something
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| 05:00 | <vagrantc> alkisg: with the debian create-fs-image plugin, it's already there.
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| 05:01 | although i don't know if i need to do anything fancy with btrfs at filesystem creation time to get all the features we might want.
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| 05:01 | <alkisg> How do you decide the size of the loopback image?
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| 05:01 | <vagrantc> alkisg: it's essentially hardcoded.
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| 05:01 | <alkisg> Not at creation; at mount time -o compress
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| 05:02 | <vagrantc> so, depending on the mount options, some files may end up compressed, and some not?
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| 05:02 | if you mount it differently each time?
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| 05:02 | <alkisg> What I also wonder about is whether such a loopback device would be fast if mounted over NFS (as a single file)
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| 05:02 | <alkisg> (08:02:34 πμ) vagrantc: so, depending on the mount options, some files may end up compressed, and some not? => yup
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| 05:03 | <vagrantc> wacky
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| 05:03 | <alkisg> That might solve the NBD disconnect/reconnect issues, and it would actually work with an unmodified initramfs without any ltsp/nbd code in it
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| 05:03 | <vagrantc> alkisg: you still have NFS's protocol overhead, which is kind of talky.
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| 05:05 | * vagrantc has been using LTSP to test a new kernel variant for armhf that's supported in qemu :) | |
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| 08:16 | <JensenDan> hey ya all. iam in to the setting up pxe boot menu and all that stuff, BUT! i have a image, this test it is a image of a win08 server. how do i serve that as an option? and actually make it work? so that i can select that from the boot menu, and it wil install win08 ?
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| 08:17 | <alkisg> JensenDan: you should be asking that question in #windows, linux users know nothing about windows network booting
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| 08:17 | (in general :))
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| 08:18 | <JensenDan> :D
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| 08:18 | it is running on a ltsp server ;)
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| 08:18 | <alkisg> If you also happen to use a logitech keyboard, you should be asking logitech instead :D
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| 08:19 | <JensenDan> iam running ltsp, and have the pxe boot and all that kind works perfectly, i have the image in i386, and set it to that image in the menu, but i just dont know what to set the kernel!? and, what is the kernel.
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| 08:19 | <alkisg> Really, not related to linux at all
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| 08:19 | <JensenDan> does it still not belong in here ? :)
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| 08:19 | <alkisg> Yup
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| 08:19 | <JensenDan> ehm.
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| 08:19 | all right :s
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| 08:33 | <Hyperbyte> JensenDan, Windows 98?! Are you NUTS?
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| 08:33 | <Hyperbyte> Oh
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| 08:33 | Windows 08
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| 08:34 | I've never ever seen it called that.
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| 08:34 | Either way good luck with that. :)
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| 08:44 | <JensenDan> Hyperbyte good luck, what do you mean? :)
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| 10:20 | <Hyperbyte> JensenDan, I mean I wish you luck with Windows. :)
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| 10:22 | <alkisg> Yeah except for RIS or WSUS, windows remote booting is a pain
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| 10:28 | <sep> alkisg, i did something similar. you have to use a tftp server that can remap windows's path separators... ie from \ to / i used tftpd-hpa; i used pxelinux and it's vesameny , and configured dhcp as normal; then you need to chainload microsoft's net loader. and give the image as a argument ; sdi.c32 might be an option for you, but the system i was on did not make compatibe limages.
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| 10:28 | http://www.etherboot.org/wiki/tftp_backslash/tftpd-hpa?DokuWiki=e93f5757705303bde32c8ecdecfa9329
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| 10:28 | images we used was made acording to ; http://www.deployvista.com/Home/tabid/36/EntryID/54/language/sv-SE/Default.aspx
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| 10:29 | <alkisg> sep: I'm not the one interested for windows booting; JensenDan is, but also the main problem is that you need to install san or other drivers for windows to be able to netboot
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| 10:29 | And you need one image for each client, which is very annoying
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| 10:29 | If I ever had need for windows clients, I'd send a single VM over LTSP fat clients
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| 10:30 | <sep> alkisg, sorry for the wrong nick :)
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| 10:30 | <alkisg> np :)
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| 10:31 | <sep> all your points are correct tho. my points are just for booting. :)
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| 10:33 | JensenDan, I think a san with writeable snapshots. master image is snapshotted into uniq machine images that you can write to. ; then you use gpexlinux and netboot onto iscsi or ataoe ?
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| 11:16 | <alkisg> ogra_: about your dual arch DVD idea for i386/amd64... a) newer isolinux versions can detect i386 vs amd64 and load the correct kernel, and b) squashfs removes duplicate files, so if you have 1 squashfs image with 2 subdirs, i386/ and amd64/, and pivot_root to one of those dirs from the initramfs, then you don't need double the size, I imagine you need even less than 1.3 the size.
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| 11:16 | <ogra_> oh cool, but it didnt look to me like the idea was generally well recieved
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| 11:18 | <alkisg> du -sh /lib/
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| 11:18 | 172M /lib/
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| 11:18 | If we assume that the arch specific files are only in there, it would mean less than 100mb increase of the squashfs image
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| 12:07 | <hughessd> hi i just did a fresh install of LTSP5 but the clients aren't booting
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| 12:07 | <hughessd> is there a list of common snags that newbs like me come across?
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| 12:08 | im guessing it's just that the clients are able to 'see' the tftp server
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| 12:14 | <dgeary2> hughessd, there is a lot of technology involved in getting a working system. which parts are you familiar with and which parts no-so-much?
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| 12:15 | btw i've just started learning about LTSP myself but already have some experience with network booting
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| 12:19 | hughessd, what happened immediately before the client didn't boot
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| 12:23 | <alkisg> !tftp | echo hughessd:
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| 12:23 | <ltsp`> hughessd: tftp: Here's a page to help you troubleshoot TFTP problems in Ubuntu: https://help.ubuntu.com/community/UbuntuLTSP/Troubleshooting/TFTP
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| 12:31 | <Hyperbyte> !alkisg
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| 12:31 | <ltsp`> Hyperbyte: alkisg: The LTSP oracle. Our beacon of hope in the world of LTSP. With the guidance of this divine emperor, we shall prevail.
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| 13:59 | <sbalneav> Morning all
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| 14:03 | <highvoltage> morning, sbalneav!
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| 14:51 | <sbalneav> Back in a bit.
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| 15:20 | <jvx> Any known issues getting LTSP running on Lubuntu 12.04?
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| 15:21 | <alkisg> !ltsp-bug
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| 15:21 | <ltsp`> alkisg: ltsp-bug: To file a bug report for upstream LTSP, go to https://bugs.launchpad.net/ltsp
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| 15:21 | <alkisg> A few are there affecting 12.04
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| 15:21 | For any known issues not there... bugs should be filed :)
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| 15:28 | <jvx> alkisg, I tried searching (after other terms) '12.04' and didn't get any hits back. 'ubuntu' generic shows items but for 10.04 etc. Maybe I should roll back before my second part of my test.
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| 15:29 | I'm putting LTSP on a booting flash drive.
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| 15:29 | <alkisg> jvx: in short, there are a few glitches but nothing too serious
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| 15:29 | <jvx> (yes slow...)
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| 15:30 | <jvx> ok. I'll try my install again. Thx.
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| 15:45 | <NeoX> hi
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| 15:45 | <NeoX> I'm trying LTSP,
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| 15:46 | <andygraybeal_> go go go!
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| 15:46 | it's awesome!
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| 15:46 | <NeoX> for that, i setup an LXC container to be my pxe server and lxc server too
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| 15:46 | <andygraybeal_> what is lxc?
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| 15:46 | ogra_ has left IRC (ogra_!~ogra@p5098ed03.dip0.t-ipconnect.de, Excess Flood) | |
| 15:47 | <NeoX> lxc is kind of virtualisation but only container for service (like openvz)
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| 15:47 | <andygraybeal_> ah i never heard of it; awesome
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| 15:47 | i run kvm
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| 15:47 | <NeoX> kvm makes you run virtual pcs inside your linux, where you can put other linux, but also bsd or either win
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| 15:48 | lxc can only run other linux
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| 15:48 | as it share the same kernel on all guest
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| 15:48 | <andygraybeal_> okay, i think i understand thnak you :)
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| 15:48 | <NeoX> but it allows you to have multiple host sharing the network, proc, ram
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| 15:49 | isolating you squeeze machine from your ubuntu, to be able to test migration and some stuff
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| 15:49 | <alkisg> NeoX: what is an "lxc server"? did you mean "ltsp server"?
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| 15:49 | I've heard about lxc containers, but not about lxc servers...
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| 15:50 | <NeoX> alksig : lxc server (for me) is the machine master the LXC container
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| 15:50 | so,
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| 15:50 | I got an LXC container that acts as my tftp/pxe/ltsp
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| 15:50 | isntalled on ubuntu 12.04 host
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| 15:51 | LXC is also 12.04
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| 15:51 | <alkisg> Sounds nice, any problems so far?
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| 15:51 | <NeoX> LTSP is installed from ubuntu package ltsp-server-standalone
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| 15:51 | the issue is when using ltsp-build-client
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| 15:51 | it did not finish because
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| 15:52 | it can't chroot /opt/ltsp/ mount -t proc proc /proc
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| 15:52 | :(
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| 15:53 | <alkisg> Is that an lxc restriction?
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| 15:53 | <NeoX> i guess it is a container issue as I dont have this issue if running on the host server
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| 15:53 | <alkisg> (/opt/ltsp/i386, I assume...)
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| 15:53 | <NeoX> if I chroot myself inside /opt/ltsp/i386, I can mount -t proc by hand
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| 15:54 | <alkisg> Do you have the exact line with the error message?
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| 15:54 | <NeoX> same issue if ltsp-build-client in amd64
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| 15:54 | I: Extracting xz-utils...
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| 15:54 | I: Extracting zlib1g...
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| 15:54 | W: Failure trying to run: chroot /opt/ltsp/amd64 mount -t proc proc /proc
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| 15:54 | error: LTSP client installation ended abnormally
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| 15:55 | <alkisg> And at that point, if you run sudo chroot /opt/ltsp/amd64 mount -t proc proc /proc, it succeeds ?
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| 15:56 | <NeoX> i'am already root on this container
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| 15:56 | if i first run chroot /opt/ltsp/amd64
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| 15:56 | then mount it works (saying read only proc)
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| 15:57 | and if i run the whole line, yes it works
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| 15:57 | but says the block device is read only
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| 15:58 | that may explain the exit from the package isntaller
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| 15:58 | <alkisg> Run: chroot /opt/ltsp/amd64 mount -t proc proc /proc && echo it works
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| 15:58 | This way you also check the command result
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| 15:59 | <NeoX> i doesn't work ;)
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| 15:59 | chroot /opt/ltsp/amd64 mount -t proc proc /proc && echo it works
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| 15:59 | mount: block device proc is write-protected, mounting read-only
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| 15:59 | mount: cannot mount block device proc read-only
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| 15:59 | <alkisg> OK, it would be an lxc issue then, not sure if people here can help you, maybe some #ubuntu channel would be more apropriate. stgraber has tried lxc containers, not sure if he's available..
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| 16:01 | <NeoX> i'll check on lxc what i can find
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| 16:01 | <stgraber> NeoX: right, that's our apparmor profile blocking it as mounting proc outside /proc in the container bypasses much of the security measures in place for lxc containers
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| 16:01 | <NeoX> thanks alkisg, thanks andygraybeal_
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| 16:01 | <stgraber> NeoX: to allow it anyway, follow the following steps (trying from memory):
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| 16:02 | <NeoX> hi stgraber, thks for joining us
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| 16:02 | <stgraber> NeoX: sudo cp /etc/apparmor.d/lxc/lxc-default /etc/apparmor.d/lxc/lxc-ltsp
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| 16:02 | NeoX: edit /etc/apparmor.d/lxc/lxc-ltsp to change the first line (profile lxc-container-default to profile lxc-container-ltsp)
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| 16:03 | <NeoX> on the host or on the container ?
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| 16:03 | <stgraber> NeoX: add a line "mount -> /opt/ltsp/**," to it
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| 16:03 | NeoX: host
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| 16:03 | NeoX: then: sudo /etc/init.d/apparmor reload
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| 16:03 | NeoX: then shutdown your container
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| 16:04 | NeoX: edit your container config, uncomment the aa_profile line and set it to lxc-container-ltsp
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| 16:04 | NeoX: start your container again
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| 16:04 | you can probably also use "lxc.aa_profile = unconfined" that'll bypass apparmor entirely, though that's even worse for security...
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| 16:06 | NeoX: https://help.ubuntu.com/12.04/serverguide/serverguide.pdf has a LXC chapter covering the apparmor stuff too
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| 16:09 | <NeoX> ok, first time i play with apparmor
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| 16:09 | ;)
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| 16:13 | well, lxc wont start the container with the new profile (even set on unconfined)
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| 16:14 | but that might be the trick as I also read some /proc/fs inside apparmor profile that bog me on starting nfs inside container
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| 16:14 | <NeoX> I will have a deeper look on apparmor
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| 16:14 | thanks stgraber for pointing me this
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| 16:17 | <stgraber> NeoX: ok, if you're stuck there, you may get some more help in #lxccontainers, I'm not extremely familar with the apparmor change (even if I implemented half of it ...) but hallyn in that channel may be able to help you more (as the author of the other half of the change and the author of the server guide)
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| 16:18 | <NeoX> well, this is a good path to follow, i've downloaded the serverguide,
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| 16:18 | i'll check the apparmor trick, and come back to lxccontainer if I still stuck
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| 16:23 | thanks everyone
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| 16:23 | bye
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| 17:38 | <alkisg> vagrantc: meeting, if you have time
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| 17:40 | sbalneav: meeting, if you are here :)
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| 18:48 | <hughessd> alkisg: thank you for the link
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| 18:48 | <hughessd> and thank you for responding, dgeary2
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| 18:48 | i didn't get to see your responses until now. :)
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| 19:00 | <hughessd> the clients won't boot with out a lts.conf right?
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| 19:00 | should there be a default one created at install?
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| 19:01 | <vagrantc> they should boot without an lts.conf
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| 19:01 | (although some old versions had a bug that failed badly)
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| 19:04 | <hughessd> hi vagrant!
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| 19:05 | * vagrantc waves | |
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| 19:07 | <hughessd> alkisg already sent me a link on troubleshooting
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| 19:07 | its pointing towards the file not being served up
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| 19:07 | i tried to manually pull down the pxelinux.0 img, but got a timeout error.
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| 19:08 | vagrantc: do you think it's a permissions problem?
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| 19:08 | the image is in the place that it's supposed to be....
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| 19:08 | (fyi)i'm remaking my whole LTSP setup after some upgrading troubles...
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| 19:28 | <alkisg> hughessd: edit /etc/default/tftpd-hpa and put --verbose right next to --secure
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| 19:28 | Then service restart tftpd-hpa, boot client, check /var/syslog
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| 19:30 | <hughessd> ok ill try that, but i just found out dhcp wasn't even running
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| 19:35 | <alkisg> Yey gimp 2.8 released at last!
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| 19:40 | Single window mode, sweet
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| 19:41 | <vagrantc> you mean, you don't have 30 toolbars floating all over the place?
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| 19:43 | <ogra_> how boring
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| 19:43 | * ogra_ thinks that made you look way more professional compared to photoshop users | |
| 19:45 | <ogra_> like a rear spoiler on a bicycle :)
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| 19:53 | <hughessd> yay! client boots!
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| 19:58 | <hughessd> hm, can't login
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| 19:58 | can't ssh in
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| 19:59 | i think i'm locked out..... wtf
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| 21:03 | <hughessd> alkisg: thanks again for your help. I have the clients pulling the image properly now.
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| 21:03 | however, even though their passwords seem to work, the thin clients keep going back to the login.
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| 21:04 | besides the sys logs where can i look for clues as to what is happening to cause them to fail?
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| 21:36 | <alkisg> hughessd: distro/version? if ubuntu 12.04, try setting the default session to ubuntu-2d
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| 21:36 | !ubuntu-2d
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| 21:36 | <ltsp`> alkisg: ubuntu-2d: To select ubuntu-2d as your default session, put this line in your lts.conf: LDM_SESSION="gnome-session --session=ubuntu-2d"
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| 21:36 | <hughessd> yes, i have that
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| 21:36 | oops
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| 21:37 | no wait, only one dash ('-')
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| 21:38 | <alkisg> (you also need a [Default] line on top of lts.conf)
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| 21:39 | <hughessd> mine's pretty simple
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| 21:39 | [default]
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| 21:39 | SCREEN_01=shell
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| 21:39 | SCREEN_07=ldm
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| 21:39 | LDM_DIRECTX=True
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| 21:39 | LDM_SESSION="gnome-session --session=ubuntu-2d"
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| 22:41 | <alkisg> hughessd: Don't use SCREEN_01 on debian and ubuntu as it's reserved for boot messages
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| 22:42 | <hughessd> ok
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| 22:42 | just a sec
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| 22:46 | <vagrantc> (screen_01 - screen_06 typically has stuff on debian
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| 22:46 | )
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| 22:46 | <alkisg> hughessd: what are you using btw, debian or ubuntu?
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| 22:46 | Ah, gnome-session=ubuntu-2d, ok
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| 22:47 | <vagrantc> maybe i should mangle /etc/inittab from init-ltsp.d ...
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| 22:48 | <alkisg> It does save a few mb ram, and allows people to use screen2-5...
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| 22:49 | <vagrantc> would need a way to override it, though
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| 22:50 | <alkisg> if boolean_is_true ${DISABLE_GETTY:-True} ...
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| 22:54 | <vagrantc> oh right, we have access to lts.conf and related variables by then
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| 23:10 | <hughessd> alkisg: it worked!
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| 23:10 | i can now boot the thinclients. thank you!
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| 23:12 | <alkisg> You're welcome
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