IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 16 May 2018 (all times are UTC)
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| 03:37 | <Keith_> @vagrantc The one where it constantly reboots stating that there's an update available.
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| 03:40 | I figured out how to create one, however as I continue learning this thing, ran into something else. Trying to setup a kiosk session with just Firefox. I chroot in, ran apt-get install firefox, and then added the SCREEN_07="kiosk" and KIOSK_EXE="/usr/bin/firefox" lines to lts.conf - however, booting it just loops "xf86OpenConsole: Cannot open virtual console 7 (Permission denied)."
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| 03:40 | I checked the logs in /tmp, but they really didn't spit out anything useful (that I saw)
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| 04:41 | <alkisg> !nbd
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| 04:41 | <ltsp> I do not know about 'nbd', but I do know about these similar topics: 'disable-nbd-proxy', 'nbd-proxy', 'nbd-compression', 'quick-nbd-tests', 'nbd-client', 'nbd-server-bug', 'nbd-trusty-bug', 'nbd-client-breaks-nm', 'nbd-bug', 'nbd-checkupdate'
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| 04:41 | <alkisg> !nbd-checkupdate | echo Keith_:
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| 04:41 | <ltsp> Keith_: nbd-checkupdate: To avoid bug https://github.com/NetworkBlockDevice/nbd/issues/59, put this in lts.conf: INIT_COMMAND_RM_NBD_CHECKUPDATE="rm -rf /usr/share/ldm/rc.d/I01-nbd-checkupdate"
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| 04:44 | <vagrantc> that sounds ... bad
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| 04:44 | not saying it isn't a necessary workaround ... but ... hrm.
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| 04:54 | <alkisg> One could always just add a delay if he needs that functionality
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| 04:54 | But imho it's bad design to have to mount a network file system to see if reboot is needed
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| 04:55 | I don't know how many "sleep" seconds nbd would need not to show this race condition
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| 05:01 | <vagrantc> sure
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| 07:25 | <eirikb> I've been re-investigating hosting a VDI, but still not able to make it work. Here is my latest simplest test trying to set up a local chroot to mimic a VDI (for testing) and using ltsp-update-image: https://gist.github.com/eirikb/700e457796e15749199fce2097deb765
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| 07:25 | The error I get is: mount: mount point /tmp/tmp.WZv3yLzzGU/root/client does not exist
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| 07:32 | <alkisg> eirikb: you don't need "-c" (cleanup) since it's a newly debootstrapped chroot
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| 07:33 | <eirikb> That was my guess as well, I actually don't want it as it would be nice to create users locally
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| 07:36 | That actually helped. My gosh. Thanks alkisg
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| 07:37 | <alkisg> np
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| 07:51 | <eirikb> It seems /var/lib/tftpboot/ltsp/client is missing pxelinux.0, am I missing a ltsp-config command?
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| 07:51 | The folder only contains lts.conf
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| 08:01 | <alkisg> You're supposed to run /usr/share/ltsp/update-kernels in the chroot after installation
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| 08:01 | Why are you trying to reimplement ltsp-build-client instead of using it?
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| 08:02 | <eirikb> I thought I had to use ltsp-update-image if I already had an install (existing VDI)
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| 08:04 | <alkisg> You have a .vdi and yet you're calling debootstrap?
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| 08:04 | <eirikb> That's for testing
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| 08:05 | I want it as simple as possible first, before I try with the actual vdi
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| 08:05 | <alkisg> OK. And why you don't want to serve the .vdi directly, and you're using directories and chroots?
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| 08:05 | <eirikb> I would love to serve the VDI, but I don't know how
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| 08:05 | <alkisg> You just point nbd-server to the .vdi file
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| 08:05 | qemu-nbd --read-only --partition=1 --connect=/dev/nbd2 /home/alkisg/VirtualBox\ VMs/bionic-mate-sch32/bionic-mate-sch32-flat.vmdk
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| 08:06 | This mounts the first partition of a vbox image to /dev/nbd2
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| 08:06 | Then nbd-server can just export /dev/nbd2
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| 08:06 | You don't need to run debootstrap or anything...
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| 08:06 | You don't need ltsp-build-client, you don't need ltsp-update-image, nothing
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| 08:15 | <eirikb> I still need ltsp-client-core installed in the VDI right, and call /usr/share/ltsp/update-kernels inside the VDI?
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| 08:36 | <alkisg> Yes
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| 08:37 | And to run ltsp-update-kernels in the server
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| 08:37 | You can symlink nbd2 to /opt/ltsp/images/amd64.img to make things easier
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| 08:38 | <eirikb> ltsp-update-kernels throws "No chroots found in /opt/ltsp"
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| 08:39 | <alkisg> (11:37:49 πμ) alkisg: You can symlink nbd2 to /opt/ltsp/images/amd64.img to make things easier
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| 08:39 | <eirikb> It throws that after linking
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| 08:40 | Maybe I've done something wrong, "du" on the .img-file says 0
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| 08:42 | I'm trying the .vdi file, not the .vmdk, but didn't think that would matter, and qemu-nbd doesn't throw any error
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| 08:45 | <alkisg> Yes using the .vdi is correct. Try sudo mount -o loop,ro /dev/nbd2 /mnt; ls /mnt
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| 08:45 | If it mounts, your image is fine
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| 08:49 | <eirikb> "mount: cannot mount /dev/loop0 read-only"
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| 08:52 | <eirikb> Worked: sudo qemu-nbd -c /dev/nbd3 -P 1 /home/debian/client.vdi . Basically same as your command. Strange
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| 08:53 | sudo ltsp-update-kernels still throws "No chroots found in /opt/ltsp"
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| 08:53 | <alkisg> Sorry, that's all the time I had today for free support. Maybe I'll be able to help again tomorrow.
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| 08:53 | <eirikb> Thanks :)
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| 08:54 | <alkisg> np
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| 11:58 | <hipower> hello
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| 11:58 | anybody?
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| 11:59 | <eirikb> alkisg: I was able to make it work! I will try to make a gist of it, others might find it very interesting
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| 12:09 | <hipower> does somebody know how to force low color (disable smart color) on LTSP skolelinux on the primary net??
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| 12:53 | <alkisg> eirikb: great, glad you liked it
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| 12:57 | <eirikb> Docker still didn't work, not sure why, I get an error about it starting too fast. But I can prepare docker-ce, and run "apt-get install -y docker-ce" on boot. It boots slower, but I don't care as I will hardly ever reboot
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| 14:15 | <eirikb> Would also be cool if I could just send the VDI as-is (perhaps cloned as img) directly to the client, using default tftp. It would be slow (as the image can reach 2-3GB), but I would only reboot a couple of times a year, and it would require a lot of RAM, but I have 24GB. I imagine it would run smoother, no tampering, perhaps even docker would just
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| 14:15 | work
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| 14:22 | <fiesh> ipxe can do http requests
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| 14:22 | <eirikb> Yeah that would also work. I actually gave it a try, both tftp and http + memdisk, but it never booted. The img-file was sent, but got some boot errors
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| 14:26 | <alkisg> LTSP has a copy_to_ram parameter that can copy the image from nbd to ram
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| 14:27 | The only benefit being that you could disconnect the server; unrelated to docker or whatever else is failing for you
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| 14:27 | <eirikb> Ok. That's not important. Docker is though, I will have to look into that later. The boot-to-install solution isn't great
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| 14:29 | <alkisg> What was the problem with docker? It runs inside the vm, but not when booted as an ltsp client?
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| 14:31 | <eirikb> I'm currently only testing in VM, or PXE boot in VBox. It didn't run inside the VBox client. I lost the error now, can get it back later. However if I install it after booting the client then it works
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| 14:32 | <alkisg> If docker doesn't run in the real installation, of course it won't run when booted as a client. Fix that first.
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| 14:33 | <eirikb> It works in the real installation
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| 14:33 | <alkisg> And are you using the image of the real installation or the vbox image?
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| 14:34 | Because if you're using the vbox image and it doesn't work there... well, that's my point
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| 14:34 | <eirikb> The client was initially built on VBox. This client had docker working. After booting a PXE client from this VDI docker doesn't work, inside that PXE client
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| 14:36 | <alkisg> "initially" could mean "in the meantime I updated the kernel and that's why it's not working anymore"
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| 14:36 | Does it work now if you boot in in vbox?
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| 14:36 | *boot it
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| 14:37 | <eirikb> Oh, I probably installed docker before running /usr/share/ltsp/update-kernel, could that be a problem?
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| 14:38 | <alkisg> Try booting the .vdi in vbox now...
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| 14:39 | <eirikb> I don't have anything at hand now, as I have gone home for work, but I will try to set it up at home later tonight
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| 14:40 | * alkisg is using vnc over ssh for that ;) | |
| 14:41 | <eirikb> I'm a fan of reverse ssh, and even sshuttle, or simply vpn, but this work was at customers location
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