IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 17 January 2019 (all times are UTC)
| 00:01 | <vagrantc> etherboot is a pretty old project; i'd be surprised if anything was still using it
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| 00:02 | you can pass different files based on things such as vendor-id and so on
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| 00:02 | in your dhcp configuration
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| 09:34 | <apeno> Καλημέρα
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| 09:35 | Έχω ανοιχτό το παράθυρο της δημιουργίας εικονικού δίσκου, με τα προβληματάκια που αναφέρει. Μήπως θα μπορούσατε να ρίξετε μια ματιά.
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| 09:43 | <alkisg> Καλημέρα apeno, αυτό είναι το αγγλικό κανάλι, γράψε αυτή τη γραμμή για να έρθεις στο ελληνικό:
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| 09:43 | /j #ts.sch.gr
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| 09:43 | <apeno> /j #ts.sch.gr
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| 09:43 | <alkisg> Χωρίς κενό μπροστά
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| 09:53 | <Hyperbyte> Heh
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| 09:58 | <alkisg> Those greeks :P
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| 10:38 | <nikoh77> Good morning ;-) my ltsp installation have a problem.. when i build image, at 98/99% of process i can see this alert strings:
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| 10:38 | Unrecognised xattr prefix system.posix_acl_default
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| 10:38 | Unrecognised xattr prefix system.posix_acl_access
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| 10:41 | but building process seems end without problem... it's dangerous?
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| 11:42 | <alkisg> No, it's fine
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| 12:28 | <JuJUBee> I want to virtualize my LTSP server (just using virtualbox). Should I just make a folder on the bare metal and mount in the VM for user home dirs? then modify the path for my students to point to this mounted dir?
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| 12:47 | <fiesh> Why would you want to do that and not use something like LXD that is meant for the job and doesn't incur performance costs and maintenance PITA?
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| 12:50 | <JuJUBee> Not familiar with LXD. I only use VM for personal use.
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| 12:50 | <alkisg> Maintaining a chroot via lxd requires command line; while with virtualbox it's normal GUI, synaptic etc etc
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| 12:50 | JuJUBee: do you want the user accounts to be inside the vm or in your server?
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| 12:50 | Why do you want the user /home to be outside the vm?
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| 12:50 | <JuJUBee> Inside VM
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| 12:51 | so backups are smaller
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| 12:51 | <alkisg> Do you know how to setup vboxfs?
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| 12:51 | <JuJUBee> I want to be able to backup the vm for disaster recovery...
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| 12:51 | <fiesh> it never actually occured to me people administrate servers from anything but the command line :)
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| 12:51 | <JuJUBee> Not yet
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| 12:52 | <alkisg> fiesh: that's the essense of chrootless ltsp, that people can manage a computer lab exactly like managing a single home pc
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| 12:52 | <JuJUBee> Oh, wait, you mean shared folders?
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| 12:52 | <fiesh> shouldn't be a problem to use graphical applications from within an lxc container thought, at least I don't see why
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| 12:52 | <alkisg> JuJUBee: You need real shared folders for that to work, not samba-like...
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| 12:53 | fiesh: imagine grub-pc trying to get installed in lxc... I guess it'll error out
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| 12:53 | <JuJUBee> alkisg, I thought vbox shared folders would be too simple/limiting...
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| 12:53 | <fiesh> alkisg: for the server?!
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| 12:53 | <JuJUBee> I do know how to set those up.
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| 12:53 | <alkisg> fiesh: no, for the "chroot"
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| 12:54 | JuJUBee: well then you just mount /home inside the vm, from your /path/to/home on your server, nothing more. LTSP doesn't know where your /home comes from
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| 12:54 | <fiesh> alkisg: why would it error out?
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| 12:54 | <JuJUBee> alkisg, OK, that is simple.
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| 12:55 | <alkisg> fiesh: because it won't have a block device available to be installed on
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| 12:55 | <fiesh> alkisg: but what does it need one for? I think I'm misunderstanding what you're saying
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| 12:55 | alkisg: why would you want to change the server's booting?
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| 12:55 | <alkisg> fiesh: the point is that you start with "install a chroot using ubuntu-desktop.iso"
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| 12:55 | Not with "deboostrap chroot"
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| 12:55 | <JuJUBee> alkisg, any reason I can't use /homes so I keep the VM accounts separated from the bare metal accounts?
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| 12:55 | <alkisg> So, "ubuntu-desktop.iso" needs a block device and a gui, not a folder
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| 12:56 | <fiesh> right so you do a loop mount I suppose?
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| 12:56 | <alkisg> JuJUBee: no reason, if you properly setup /home within the vm, it'll work
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| 12:56 | <JuJUBee> alkisg, thanks so much
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| 12:56 | <alkisg> fiesh: no, you use virtualbox. Virtualbox then uses files to provide virtual block devices
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| 12:57 | <fiesh> anyhow, I'm just really happy with LXC and its publishing / snapshotting / backuping / what not recently ;)
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| 12:57 | <alkisg> vbox also supports all that
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| 12:57 | It just needs a mouse instead of terminal know-how
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| 12:57 | <fiesh> heh yeah, I don't have that on our server :-)
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| 12:57 | <alkisg> Up to now, chroots were used instead of lxc
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| 12:58 | A lot of software doesn't run properly in chroots, so installations fail
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| 12:58 | lxc, properly configured, can run more software, but still not all the ones in ubuntu-desktop.iso
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| 12:58 | So you still need to find a few workarounds here and there
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| 12:58 | <fiesh> I see
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| 12:58 | <alkisg> If you can do that, great, you save ram and 10% cpu
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| 12:59 | For people that can't do that, ...vbox/kvm/virt-manager etc are fine
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| 12:59 | <fiesh> right
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| 14:40 | <nikoh77> there is a way to poweroff thin client pc with only one step, instead poweroff from os and poweroff from login screen?
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| 15:03 | <alkisg> !epoptes
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| 15:03 | <ltsp> epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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| 15:03 | <alkisg> Epoptes supports poweroff with a single click
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| 15:47 | <nikoh77> yes, i know, but from thin clients not is possible?
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| 15:54 | <||cw> nikoh77: the action happens at the server, so you'd need a new log off process that calls a localapp that waits an then powers down
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| 15:54 | or, just log off and turn it off. at the login screen it's all read only, turning it off hurts nothing
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| 16:16 | <alkisg> nikoh77: epoptes-client has a script called endsession
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| 16:16 | You can create a shortcut to it, and run endsession --shutdown
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| 16:16 | That script is very clever, it logs out AND sends a special signal to LDM so that it knows to shut down after logout
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| 16:17 | So you can do it with a single click from a thin client
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| 16:17 | Try it. Log in on a thin client, open a terminal, and run: /usr/share/epoptes-client/endsession --shutdown
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| 16:17 | The client will then shut down without any dialogs
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| 16:29 | <nikoh77> thanks!
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