IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 21 November 2018 (all times are UTC)
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| 05:37 | <jphein> Hello! =] Does anyone know where I would put my install-ubuntu kernels so that update-kernels picks them up and presents them on the PXE menu?
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| 05:39 | Or, do I have to edit the pxelinux.cfg/default symlink manually?
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| 05:41 | <jphein> This is my https://github.com/jphein/boxen/blob/master/etc/ltsp/update-kernels.conf
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| 05:44 | I suppose I can edit my dnsmasq.d/ to add the mac address of the client I'd want to install. With the ubuntu-install pxe boot config.
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| 05:48 | I'm also having issues with the chrootless method in the Azure cloud. Seems the Azure kernel may not have all the right input drivers for KVM?
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| 06:25 | <alkisg> jphein: I'm not sure what you're asking; why do you need more than one kernel?
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| 06:25 | If you only keep one kernel, then ltsp will pick them up
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| 06:26 | Now if you want multiple kernels, ltsp will pick up the latest
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| 06:26 | <jphein> Sorry, let me rephrase that. Do you know of a simple way to present the PXE client user with a menu to install Ubuntu?
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| 06:26 | <alkisg> So if e.g. azure has 4.1, and you manually install 4.15, then the server will have 4.1 and the clients 4.15, without involving any configs
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| 06:26 | <jphein> cool
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| 06:26 | <alkisg> jphein: ah sure, you just expose the .iso etc
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| 06:27 | But the "ltsp way to install a client" is to netboot it and cp -a /run/initramfs/rofs /target
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| 06:27 | I.e. to clone the ltsp image...
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| 06:27 | <jphein> that's exactly what i want
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| 06:28 | <alkisg> You can also easily netboot it, and run: kvm -cdrom /path/to/windows -hda /dev/sda, so that you can even install windows while booted as an ltsp client
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| 06:28 | All those don't involve pxelinux at all
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| 06:28 | You do those via epoptes after the client boots normally via ltsp
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| 06:28 | <jphein> oh yes kvm
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| 06:28 | <alkisg> (or locally)
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| 06:29 | <jphein> with epoptes
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| 06:29 | nice
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| 06:29 | <alkisg> I usually don't want to leave my chair, so I do all clients via epoptes
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| 06:29 | <jphein> haha =]
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| 06:29 | <alkisg> So I can be installed 3 different OSes on 3 clients without me going there
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| 06:30 | *I can install, meh
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| 06:30 | I can be installing. OK, got it :P
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| 06:30 | <jphein> thank you , again!
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| 06:30 | <alkisg> np
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| 06:30 | <jphein> I like that solution a lot.
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| 06:31 | Do you know the simplest way to preseed an Ubuntu installation with a few changes?
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| 06:32 | wcp -a /run/initramfs/rofs /target
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| 06:32 | Do I make a screen script?
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| 06:33 | <alkisg> jphein: let's clear something up
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| 06:34 | cp is for cloning the ltsp image
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| 06:34 | kvm is for installing ubuntu from an .iso
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| 06:34 | preseeding only applies to the iso
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| 06:34 | So which one are you asking about?
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| 06:35 | <jphein> hahaha, I'm just very curious
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| 06:35 | =]
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| 06:35 | i like all of them
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| 06:35 | but I want to know more about the cp -a
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| 06:35 | it's a simple as that?
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| 06:36 | cloning
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| 06:36 | <alkisg> I don't make screen scripts for such simple things; I do make scripts that I run either from epoptes or directly from the client
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| 06:36 | cp, add user, install grub
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| 06:36 | You can also have a vm on the server, and use dd, to avoid all that
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| 06:36 | <jphein> oh i see
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| 06:37 | using qcow?
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| 06:37 | or raw img
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| 06:37 | <alkisg> E.g. I have bionic-mate in vbox, then i expose it via nbd, and I dd if=/dev/nbd2 of=/dev/sda on the clients, and it's ready
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| 06:37 | Both can be done, qemu-nbd supports qcow and vdi and vmdk and raw
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| 06:38 | <jphein> so many ways
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| 06:38 | <alkisg> You can even login normally as a user on the client, so that your image is accessible by sshfs in /home/username
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| 06:38 | <jphein> that is the one i'll use since I already have the vm
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| 06:38 | <alkisg> So then you do dd if=/home/username/vms/myvm of=/dev/sda, done
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| 06:38 | No scripts, no screen scripts, nothing
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| 06:39 | You may only need to resize2fs /dev/sda1 afterwards, so that it extends to all the disk size
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| 06:39 | <jphein> right
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| 06:41 | <vagrantc> and you're doing this in a user with sudo privledges or something?
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| 06:41 | <jphein> yes
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| 06:41 | <alkisg> Yup, with LDM_HASH_PASSWORD=True; or via epoptes :)
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| 06:41 | * alkisg waves to vagrantc btw; how are things there? | |
| 06:42 | <vagrantc> been spending a lot of my time getting the pinebook working on debian and guix
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| 06:42 | actually used it for an extended weekend trip and it was pretty usable
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| 06:42 | <alkisg> Haha great!
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| 06:43 | vagrantc is never mainstream! Always the weird open devices etc :D
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| 06:43 | <vagrantc> just did an upload for the arm-trusted-firmware to debian built on it natively for arm64 :)
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| 06:43 | <alkisg> (thumbs)!
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| 06:44 | <vagrantc> i do have in the back of my mind to update ltsp-docs and ltsp* packaging in debian... but it keeps getting back-burnered
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| 06:45 | <alkisg> Ubuntu said they'll support 18.04 for 10 years
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| 06:45 | So I guess that ltsp version will stay around for a long time
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| 06:45 | (the ppa version, that is; but I won't be e.g. putting ltsp6 to the ppa, too different)
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| 06:46 | <vagrantc> https://bugs.debian.org/913774 makes me want to never touch ldm again
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| 06:46 | <alkisg> Eh, thin clients, meh
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| 06:47 | Sure we could patch that policy via an init-ltsp.d script
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| 06:47 | <vagrantc> i think they're fat clients
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| 06:47 | <alkisg> We're using su on fat clients
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| 06:47 | So the wtmp entry should be there
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| 06:47 | Even the logind seat is there
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| 06:47 | <vagrantc> hm.
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| 06:48 | my main reaction was "let's drop support for LDM!" :)
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| 06:48 | <alkisg> Haha, too true; let's hope this summer's gsoc will be about ltsp6
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| 06:49 | * vagrantc should've had it together to propose some real LTSP projects for this recent outreachy round... | |
| 06:50 | <vagrantc> my focus is just not on LTSP lately ... :/
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| 06:54 | i keep thinking i'll get around to implementing some network booting integrated into guix, too
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| 06:56 | i suspect "porting" ltsp to guix would basically involve a rewrite from scratch
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| 06:56 | * alkisg would like to find some funding to implement the netboot.bin method for rpi's, so that the sdcards don't ever need to be updated.. | |
| 06:57 | <alkisg> But since I don't like rpi performance, that isn't a priority now... ltsp6 kinda is, with wayland ahead
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| 06:58 | <vagrantc> alkisg: the rpi3+ does network booting by default when no sd card is present
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| 06:58 | or whatever the one i have is
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| 06:58 | performance might be a little better than the rpi2 or rpi3, but not much
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| 06:58 | <alkisg> Right, and they have that in a bin file for previous versions, but it's tricky
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| 07:00 | <vagrantc> tricky to burn it in?
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| 07:00 | and once it's burned in, they will refuse to boot locally?
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| 07:01 | <alkisg> You put that in the sdcard as a file
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| 07:01 | But it requires some server-side changes to boot properly, it's fragile
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| 07:02 | <vagrantc> huh
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| 07:02 | <alkisg> I made it boot once after 2 mins of delay, but then I didn't have any more time to spend on it
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| 07:06 | <vagrantc> looking for low-powered LTSP clients is what sent me on the path of exploring all these arm boards
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| 07:07 | <alkisg> Hm, for thin clients it would be great, but are they worthy for fat clients?
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| 07:07 | !cheap-client
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| 07:07 | <ltsp> cheap-client: https://www.gearbest.com/tv-box-c_11262/?attr=2081-1279
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| 07:08 | <alkisg> ...most of those are cheap, low powered, and yet would make decent fat clients...
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| 07:10 | <vagrantc> yeah, the x86 boxes have dramatically reduced power consumption in the last decade, while still generally outperforming the arm stuff
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| 07:11 | outperforming is a bit of an understatement :)
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| 07:34 | <jphein> Which commands do you run after a cp -a /run/initramfs/rofs /target ? Install grub?
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| 08:16 | <alkisg> jphein: mount /dev/sda1 /mnt; cd /mnt; for d in proc sys dev dev/pts; do mount --bind /$d $d; done; chroot . dpkg-reconfigure grub-pc; umount dev/pts dev sys proc
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| 08:18 | <jphein> Thank you!
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| 13:50 | <adbenitez> good morning
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| 13:51 | alkisg: I am interested in what you mentioned to me days ago about fat clients
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| 13:52 | <alkisg> adbenitez: more specifically?
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| 13:52 | <adbenitez> alkisg: about using fat clients to better admin network
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| 13:52 | <alkisg> What do you want to ask?
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| 13:55 | I don't remember the case very well, if you're just asking "how/why", see the installation page:
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| 13:55 | !install
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| 13:55 | <ltsp> install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
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| 13:59 | <adbenitez> alkisg: sorry I have lost the connection, but I am checking the irc logs site
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| 13:59 | I will explaing the case better
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| 14:00 | I have ltsp already installed and in use by some thin clients
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| 14:01 | what I must to do is add the posibility for current full work stations to boot as a fat client or from the local HD
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| 14:02 | I wanna know if this is something possible and already done with ltsp or I must hack around?
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| 14:04 | alkisg: the installation page you give me don't says anything about this
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| 14:18 | <alkisg> !local-boot
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| 14:18 | <ltsp> local-boot: If you want LTSP fat clients on a low-speed network, you can put i386.img on e.g. C:\Boot\LTSP\i386.img and use this command line in pxelinux.cfg: APPEND ro initrd=ltsp/i386/initrd.img init=/sbin/init-ltsp root=/dev/sda1 rootflags=ro loop=/Boot/LTSP/i386.img; IPAPPEND 3
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| 14:18 | <alkisg> adbenitez: are you talking about this one? ^
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| 14:19 | <adbenitez> alkisg: nop :(
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| 14:19 | <alkisg> adbenitez: do you mean a grub boot menu that allows local boot or network boot?
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| 14:19 | <adbenitez> alkisg: yes
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| 14:20 | <alkisg> Eh, you just need to install the grub-ipxe package then
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| 14:20 | This isn't specific to ltsp
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| 14:20 | <adbenitez> alkisg: ohhh
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| 14:21 | alkisg: I was thinking that I must configure ltsp to send some grub screen or something, sorry!
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| 14:21 | <alkisg> np
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| 14:21 | <adbenitez> alkisg: sorry for waste you time, you must hate me! :(
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| 14:22 | <alkisg> Oh not at all don't worry
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| 14:22 | I help here when I'm able to anyway
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| 14:22 | <adbenitez> alkisg: thanks!
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| 15:12 | <alkisg> !vnc-dide
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| 15:12 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 15:44 | <||cw> you CAN make your pxe server give a local boot option, but that still boots PXE first, and still isn't an LTSP option
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