IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 30 September 2019 (all times are UTC)
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| 10:17 | <giacomo> Hi!
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| 10:20 | <alkisg> Hi giacomo
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| 10:26 | <giacomo> Ciao!
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| 10:26 | First of all thanks to help me!
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| 10:27 | I've installed Mate with LTSP from scratch, but no way to have guest login working.
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| 10:28 | I see the guest use at login but when click I've incorrect password message.
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| 10:29 | If I set a password (guest) after inserting it seems to login (black screen) but then comes back to login screen.
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| 10:29 | There are no messages on Syslog.
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| 10:30 | At LTSP installation I've set NFS with command ltsp NFS.
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| 10:38 | <alkisg> I'll be back in 10 mins, wait
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| 10:38 | <giacomo> ok
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| 10:41 | <alkisg> (in the meantime, open the client, and prepare epoptes)
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| 10:41 | !vnc-edide
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| 10:41 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 10:43 | <giacomo> but with which user I've to login in the client?
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| 10:44 | <uumas> giacomo: You don't need to login on the client. Run epoptes on the server.
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| 10:44 | <giacomo> right!
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| 10:45 | <alkisg> giacomo: ok, let's do this a bit quickly as I'll have to leave again in a bit,
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| 10:45 | so yes do this on the server
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| 10:46 | <giacomo> also for me
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| 10:46 | we can make this afternoon, when you've time?
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| 10:46 | it's lunch time for me
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| 10:46 | tell me when you're available
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| 10:46 | <alkisg> In the mornings I'm at the office so I'm online lots of hours; in the afternoon I *might* be online some time, but I can't predict when
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| 10:47 | If you're online most afternoon, I can ping you when I come
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| 10:47 | Or let's leave it for tomorrow
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| 10:47 | <giacomo> I'm here this afternoon.
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| 10:47 | if you have time you can ping me
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| 10:47 | <alkisg> OK
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| 10:47 | <giacomo> Thanks!
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| 13:09 | <alkisg> giacomo: ping?
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| 13:09 | <giacomo> Ciao!
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| 13:09 | I'm here!
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| 13:09 | <alkisg> Wanna do this now?
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| 13:09 | OK:
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| 13:09 | !vnc-edide
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| 13:09 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 13:09 | <giacomo> sure
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| 13:09 | thanks!
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| 13:15 | <alkisg> giacomo: first, you had these under [server] instead of under [client]
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| 13:15 | So the didn't affect the clients
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| 13:15 | But, where's your NFS dir?
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| 13:15 | <giacomo> It's not configured now.
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| 13:15 | but giacomo users works!
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| 13:16 | there is a commnet on lts.conf
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| 13:16 | <alkisg> Don't you want NFS to be in another server?
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| 13:16 | Which server is that?
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| 13:16 | <giacomo> no, wait
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| 13:17 | there was on my previous installation
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| 13:17 | do I've to configure the remote NFS home?
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| 13:17 | <alkisg> I want to help you configure the final thing
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| 13:17 | <giacomo> ok
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| 13:18 | <alkisg> Tell me how you want it to be
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| 13:18 | <giacomo> wait that I put on lts.conf the NFS server.
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| 13:18 | ok?
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| 13:19 | <alkisg> OK, go on
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| 13:21 | <giacomo> done
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| 13:21 | <alkisg> I didn't see anything
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| 13:21 | <giacomo> you can open now again lts.conf
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| 13:24 | <giacomo> there is not home for guest on the NFS server
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| 13:26 | <alkisg> So, issues so far:
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| 13:26 | wrong place for the ltsp.conf parameters, under [server] instead of under [client],
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| 13:26 | wrong shell for guest, /bin/sh instead of /bin/bash,
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| 13:26 | no /home/guest for guest to login to the server via ssh
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| 13:27 | and no nfs in fstab
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| 13:27 | Now autologin worked
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| 13:27 | <giacomo> yes
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| 13:27 | <alkisg> Do you need anything else?
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| 13:28 | <giacomo> no, but wait... :)
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| 13:28 | <alkisg> Do you want multiple clients with the same guest template?
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| 13:28 | <giacomo> do I've to put these by hand? I mean right shell and nfs on fstab?
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| 13:29 | this...
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| 13:29 | no /home/guest for guest to login to the server
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| 13:29 | <alkisg> You put FSTAB_NFS in ltsp.conf; then this puts it to fstab automatically
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| 13:29 | <giacomo> on LTSP server?
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| 13:29 | <alkisg> How did you create the guest user?
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| 13:29 | If you used "adduser", it would do everything correctly
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| 13:29 | <giacomo> adduser command
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| 13:29 | <alkisg> You used something broken, what was it?
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| 13:29 | Maybe you used useradd instead?
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| 13:30 | Anyway, I fixed it now, it's ok
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| 13:31 | giacomo: how do you name your PCs? E.g. I name them "pc01", "pc02" etc
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| 13:32 | <giacomo> I've to name using DHCP server.
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| 13:32 | <alkisg> But what are the names?
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| 13:32 | <giacomo> ok as pc01...
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| 13:32 | <alkisg> OK
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| 13:32 | How many?
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| 13:33 | <giacomo> I think maximum 25/27 for guest on a computer room.
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| 13:33 | <meo> I use suffixes for board type and video output type (local idiosyncrasy)
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| 13:34 | <giacomo> You're right: I used useradd!
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| 13:35 | so I don't need home for guest on my NFS server, right?
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| 13:36 | <alkisg> I thought you *want* home for guest on your nfs server, but not on your ltsp server
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| 13:37 | You can do whatever you want, as long as you tell me quickly :)
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| 13:37 | Now I created 30 guest homes on your nfs server, and not on your ltsp server
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| 13:38 | meo: what's an example hostname for you?
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| 13:40 | giacomo: did the client fail to boot? What's the message?
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| 13:40 | <giacomo> have you rebooted it?
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| 13:40 | <alkisg> Yes
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| 13:42 | <giacomo> fails
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| 13:42 | <alkisg> Message?
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| 13:42 | <giacomo> VMMouse at ISA.....
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| 13:42 | <alkisg> Nah, that's not it
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| 13:42 | Anyway hard-reset it
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| 13:43 | <giacomo> trying... not simple... :)
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| 13:43 | <alkisg> What's your setup, vmware inside windows?
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| 13:43 | <giacomo> no Windows!!! :)
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| 13:43 | <meo> alkisg: W201-CVDH
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| 13:43 | <giacomo> LTSP server, NFS server and PXE clint are on the same Proxmox.
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| 13:44 | <meo> C is an index in motherboard table, VDH means "vga, dvi, hdmi"
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| 13:44 | <alkisg> meo: ah, the name isn't at the end, doesn't match my hypothesis at the ltsp code ;)
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| 13:44 | WCVDH-201 or something would help for autologin etc user management
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| 13:45 | giacomo: eh, it would be much simpler if you just had an ltsp server without proxmox, but sure, whatever you like
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| 13:45 | E.g. I would be able to install virtualbox inside the server, so that I see an emulated client myself
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| 13:45 | <giacomo> This is for testing!
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| 13:45 | <alkisg> But nested virtualization isn't there yet
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| 13:45 | So you need to tell me what the client says
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| 13:46 | <giacomo> but I've several LTSP server running on VMWare and Proxmox and they works fine.
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| 13:46 | <alkisg> Yes I know
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| 13:46 | <giacomo> Do you think that there are some problems with LTSP server as virtual?
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| 13:46 | <alkisg> Not at all
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| 13:46 | It just makes things harder and slower with no real benefits, but whatever users like :)
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| 13:46 | For some reason virtualization is very "...in"
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| 13:47 | <giacomo> booting...
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| 13:47 | invalid user "guest:guest"
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| 13:47 | <alkisg> I've even seen ltsp servers beamed from one proxmox to another with no issues at all
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| 13:47 | I don't see the client in epoptes
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| 13:48 | <giacomo> it hangs
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| 13:48 | <alkisg> Try again
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| 13:48 | (reboot)
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| 13:49 | PRE_INIT_GUEST_HOME="mkdir -p /home/guest; chown 1001:1001 /home/guest"
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| 13:53 | giacomo: ok, everything is ready now, see ltsp.conf
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| 13:54 | [a2:84:62:72:5d:2e]
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| 13:54 | HOSTNAME=pc01
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| 13:54 | FSTAB_NFS="192.168.0.54:/home/guests/pc01 /home/guest nfs defaults,nolock 0 0"
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| 13:54 | You change pc01 there to the other dirs
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| 13:54 | So the same guest account has different homes on each client
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| 13:54 | And, now you only need a command to reset /home/guest on login
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| 13:55 | <giacomo> so I've to configure here all my clints PCs, right?
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| 13:55 | <alkisg> This is one method, yes
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| 13:55 | Another method is to have a temporary home, which needs more ram,
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| 13:55 | but which is automatically cleared on logout and doesn't need the server storage
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| 13:55 | <giacomo> and if I use my DHCP server to assign hostnames?
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| 13:56 | <alkisg> Another method is to create a little script that puts the hostname in fstab
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| 13:56 | <alkisg> You can do anything, it's just a couple of shell commands to do it
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| 13:57 | <giacomo> what do you mena with "Another method is to have a temporary home, which needs more ram,"?
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| 13:57 | RAM on the server?
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| 13:57 | <alkisg> /home/guest needs to exist somewhere
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| 13:57 | <giacomo> I don't need persistent home for geust!
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| 13:57 | <alkisg> It can exist on the nfs server, like now
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| 13:57 | It can exist on the *client* ram
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| 13:57 | But this will mean that you have less ram available for programs
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| 13:57 | So the best way is to have a directory on the nfs server for each pc
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| 13:58 | This directory should be re-initialized from a template on client login
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| 13:58 | <giacomo> I plan to have 4GB ram on my clients.
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| 13:59 | so yous suggest to have in NFS server and re-initialized at login?
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| 13:59 | <alkisg> It depends on your needs
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| 13:59 | I don't know your needs to tell you which one is better for you
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| 13:59 | <giacomo> I don't need to save nothing!
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| 14:00 | Better to have cleared guest account everytime.
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| 14:00 | <alkisg> If a user logs in to firefox, then tries to download an .iso, then moves it to a usb stick,
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| 14:00 | this will work with nfs home, but not with ram-home
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| 14:00 | <giacomo> The I use a shared folder on NFS server to save files.
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| 14:00 | <alkisg> Because the .iso won't fit to ram
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| 14:00 | ...why?
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| 14:00 | <alkisg> Why a shared folder instead of normal homes?
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| 14:00 | How do you prevent users from deleting everything on the share?
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| 14:01 | <giacomo> to exchange files between teacher and students.
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| 14:02 | <alkisg> And then they delete everything again?
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| 14:03 | <giacomo> this is not a problem
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| 14:03 | <alkisg> OK
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| 14:03 | So sure, a tmpfs would also work fine for you
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| 14:03 | Want me to set it up? All home in ram?
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| 14:03 | <giacomo> but if I save on the home of the guest a student must use always the same PC.
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| 14:04 | <alkisg> Of course not; that's why users have accounts
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| 14:04 | But anyway, I don't have a lot of time
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| 14:04 | Let's wrap this up
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| 14:04 | Do you want me to set up a ram home for you?
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| 14:05 | <giacomo> We're thinking to users account.
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| 14:05 | ok for now and...
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| 14:05 | <alkisg> Here, each user has their own account
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| 14:05 | E.g. a1-01 means "the kid, or kids, that work on pc01, from class a1"
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| 14:05 | <giacomo> which kind of school?
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| 14:06 | <alkisg> But if some time pc01 is off, they can log in to pc02 with that a1-01 account
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| 14:06 | We have 1000+ schools here, so, all kinds of primary/secondary schools
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| 14:06 | So this way they can set their wallpapers, settings, save things etc
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| 14:06 | <giacomo> fantastic!!!
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| 14:06 | <alkisg> And at the end of the year, we clean up their accounts
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| 14:07 | <giacomo> so all school with Linux?
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| 14:07 | <alkisg> Those 1000+ schools are all with ubuntu/ltsp, yes
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| 14:07 | There are others with windows
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| 14:07 | <giacomo> and the administration of schools?
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| 14:08 | <alkisg> In my prefecture, around 90% of schools have ubuntu; while in whole of greece, maybe around 10%
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| 14:08 | <giacomo> always Ubuntu?
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| 14:08 | <alkisg> I advice them to use the same version, Ubuntu MATE 18.04, to be able to support it better
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| 14:08 | <giacomo> I like a lot your model!
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| 14:08 | <alkisg> As I'm also solving issues outside of ltsp, e.g. in gcompris, kernel, mate, whatever, not just in ltsp
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| 14:08 | <giacomo> do you have also interactive board?
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| 14:09 | <alkisg> Some schools do, but personally I don't like them :)
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| 14:09 | Each has its own software, so teachers need to re-write their activities, so it's a waste of time
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| 14:09 | <giacomo> we're thinking to put away, using simple large TV screen with PCs.
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| 14:09 | <alkisg> A simple projector is usually what teachers need
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| 14:09 | Yeah, or large TV
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| 14:10 | <giacomo> We're tryig to find a software fro Android to share the tablet screen of the teacher on the TV.
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| 14:10 | so I've plan to use LTSP for such TV!
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| 14:10 | * alkisg is using vnc in all OSes... | |
| 14:10 | <alkisg> OK anyway time to go
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| 14:11 | <giacomo> THANKS A LOT!
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| 14:11 | or, in Italy....
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| 14:11 | GRAZIE 1000!
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| 14:11 | <alkisg> No worries. Btw, you can hire me per hour if you need support next times.
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| 14:11 | Parakalo in Greek (you're welcome)
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| 14:11 | <giacomo> :)
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| 14:12 | Ciao!
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| 14:19 | <meo> alkisg: does streaming & audio work over vnc?
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| 14:19 | i never tried
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| 14:26 | <||cw> idk about audio, video is like a slideshow
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| 14:28 | <alkisg> video in gigabit = 15 fps
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| 14:29 | audio = nope
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| 14:31 | <meo> makes sense
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| 14:32 | well i wus gonna block youtube and facebook anyway :D
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| 16:51 | <dogui-br> hello
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| 16:52 | how are you? I am testing Ubuntu mate 18.03 64 bits dual Nic. It does not works
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| 16:54 | I run all steps
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| 16:54 | and ltsp -o dnsmasq -d1 -p0 --dns-server=dns ips
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| 16:58 | <alkisg> dogui-br: hello
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| 16:59 | <alkisg> Can I see?
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| 16:59 | !vnc-edide
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| 16:59 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 17:00 | <alkisg> Is your internal IP=192.168.67.1?
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| 17:10 | <dogui-br> yes alkisg the internal IP is: 192.168.67.1
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| 17:10 | <alkisg> dogui-br: I don't have much free time, can I see over vnc?
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| 17:10 | Do the step I wrote above ^
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| 17:11 | <dogui-br> yes one minute
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| 17:17 | <alkisg> dogui-br: vnc was stopped
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| 17:17 | Can you run it again?
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| 17:18 | <dogui-br> yes
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| 17:23 | <alkisg> dogui-br: it's working fine, but you have a very slow client
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| 17:25 | <dogui-br> ohh yes
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| 17:25 | yes but running nice
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| 17:26 | thank you alkisg
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| 17:27 | <alkisg> np
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| 17:51 | <gp> Where are screen scripts now? /usr/share/ltsp/screen.d/ doesn't seem to exist any more
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| 17:59 | My goal is to replicate the LTSP5 environment that had: SCREEN_02="shell"
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| 17:59 | SCREEN_03="xterm"
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| 17:59 | SCREEN_04="ssh"
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| 17:59 | SCREEN_07="ldm"
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| 17:59 | SCREEN_05="xfreerdp ..."
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| 18:35 | <alkisg> gp, screen scripts don't exist anymore. You'd handle screens the same way you'd handle them in a non-LTSP system
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| 18:35 | (so that they'd also work in wayland etc etc)
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| 18:36 | For example, SCREEN_02=shell would be like this: https://wiki.archlinux.org/index.php/Getty#Automatic_login_to_virtual_console
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| 18:38 | <gp> alkisg: Thanks I will read through and familiarize myself. I've only ever configured shell scripts with LTSP. Is there any easy way to configure by client mac address or similar to how LTSP5 allowed?
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| 18:38 | <alkisg> Sure, just put the code under [mac:address] sections ;)
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| 18:39 | <gp> alkisg: awesome.
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| 18:39 | <alkisg> The hard part is finding the "new way to do things with systemd"; putting that under [mac:address] is very easy
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| 18:39 | <gp> alkisg: haha fair enough
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| 18:40 | <alkisg> gp, note that if you find those new ways, and they're better off automated by some ltsp parameters, we can add that code to ltsp
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| 18:40 | E.g. it might be useful to reimplement SCREEN_02=shell via systemd units/overrides
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| 18:40 | <gp> alkisg: I will see what I can come up with and report back
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| 18:40 | <alkisg> Great
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| 18:41 | (unfortunately it wasn't possible to keep the old methods, they have a lot of race conditions nowadays, as inittab isn't used anymore)
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| 19:17 | <gp> alkisg: Have you seen any writeups on this anywhere? I tried in #ubuntu but didn't get anywhere. Would be nice to jumpstart into something that works which I can modify instead of starting from scratch
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| 19:21 | hrm actually I think I was over complicating in my head
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| 19:30 | <alkisg> gp, what do you mean writeups? You just need systemd units, there are lots of them, see my link above for an example
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