IRC chat logs for #ltsp on irc.freenode.net (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
00:02
you can pass different files based on things such as vendor-id and so on
00:02
in your dhcp configuration
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09:34
<apeno>
Καλημέρα
09:35
Έχω ανοιχτό το παράθυρο της δημιουργίας εικονικού δίσκου, με τα προβληματάκια που αναφέρει. Μήπως θα μπορούσατε να ρίξετε μια ματιά.
09:43
<alkisg>
Καλημέρα apeno, αυτό είναι το αγγλικό κανάλι, γράψε αυτή τη γραμμή για να έρθεις στο ελληνικό:
09:43
/j #ts.sch.gr
09:43
<apeno>
/j #ts.sch.gr
09:43
<alkisg>
Χωρίς κενό μπροστά
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09:53
<Hyperbyte>
Heh
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:
10:38
Unrecognised xattr prefix system.posix_acl_default
10:38
Unrecognised xattr prefix system.posix_acl_access
10:41
but building process seems end without problem... it's dangerous?
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?
12:50
<JuJUBee>
Not familiar with LXD. I only use VM for personal use.
12:50
<alkisg>
Maintaining a chroot via lxd requires command line; while with virtualbox it's normal GUI, synaptic etc etc
12:50
JuJUBee: do you want the user accounts to be inside the vm or in your server?
12:50
Why do you want the user /home to be outside the vm?
12:50
<JuJUBee>
Inside VM
12:51
so backups are smaller
12:51
<alkisg>
Do you know how to setup vboxfs?
12:51
<JuJUBee>
I want to be able to backup the vm for disaster recovery...
12:51
<fiesh>
it never actually occured to me people administrate servers from anything but the command line :)
12:51
<JuJUBee>
Not yet
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
12:52
<JuJUBee>
Oh, wait, you mean shared folders?
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
12:52
<alkisg>
JuJUBee: You need real shared folders for that to work, not samba-like...
12:53
fiesh: imagine grub-pc trying to get installed in lxc... I guess it'll error out
12:53
<JuJUBee>
alkisg, I thought vbox shared folders would be too simple/limiting...
12:53
<fiesh>
alkisg: for the server?!
12:53
<JuJUBee>
I do know how to set those up.
12:53
<alkisg>
fiesh: no, for the "chroot"
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
12:54
<fiesh>
alkisg: why would it error out?
12:54
<JuJUBee>
alkisg, OK, that is simple.
12:55
<alkisg>
fiesh: because it won't have a block device available to be installed on
12:55
<fiesh>
alkisg: but what does it need one for? I think I'm misunderstanding what you're saying
12:55
alkisg: why would you want to change the server's booting?
12:55
<alkisg>
fiesh: the point is that you start with "install a chroot using ubuntu-desktop.iso"
12:55
Not with "deboostrap chroot"
12:55
<JuJUBee>
alkisg, any reason I can't use /homes so I keep the VM accounts separated from the bare metal accounts?
12:55
<alkisg>
So, "ubuntu-desktop.iso" needs a block device and a gui, not a folder
12:56
<fiesh>
right so you do a loop mount I suppose?
12:56
<alkisg>
JuJUBee: no reason, if you properly setup /home within the vm, it'll work
12:56
<JuJUBee>
alkisg, thanks so much
12:56
<alkisg>
fiesh: no, you use virtualbox. Virtualbox then uses files to provide virtual block devices
12:57
<fiesh>
anyhow, I'm just really happy with LXC and its publishing / snapshotting / backuping / what not recently ;)
12:57
<alkisg>
vbox also supports all that
12:57
It just needs a mouse instead of terminal know-how
12:57
<fiesh>
heh yeah, I don't have that on our server :-)
12:57
<alkisg>
Up to now, chroots were used instead of lxc
12:58
A lot of software doesn't run properly in chroots, so installations fail
12:58
lxc, properly configured, can run more software, but still not all the ones in ubuntu-desktop.iso
12:58
So you still need to find a few workarounds here and there
12:58
<fiesh>
I see
12:58
<alkisg>
If you can do that, great, you save ram and 10% cpu
12:59
For people that can't do that, ...vbox/kvm/virt-manager etc are fine
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?
15:03
<alkisg>
!epoptes
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
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?
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
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
16:16
You can create a shortcut to it, and run endsession --shutdown
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
16:17
So you can do it with a single click from a thin client
16:17
Try it. Log in on a thin client, open a terminal, and run: /usr/share/epoptes-client/endsession --shutdown
16:17
The client will then shut down without any dialogs
16:29
<nikoh77>
thanks!
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