IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 17 October 2014   (all times are UTC)

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07:31
<alkisg_web>
!nbd-client
07:31
<ltsp`>
nbd-client: To try mounting the NBD image from the client initramfs: nbd-client 192.168.67.1 -N /opt/ltsp/i386 /dev/nbd0
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07:36
<penchal>
hi
07:37
i am not able to install ubantu in my pc
07:38
<work_alkisg>
Ask in the ubuntu channel then, not in #ltsp...
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07:41
<penchal>
i am not able to install LTS
07:41
can u help me out?
07:44
<work_alkisg>
Ask in #ubuntu
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07:53
<joamuran>
Hello! we have a little question about local apps...
07:54
<work_alkisg>
!ask
07:54
<ltsp`>
ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
07:54
<joamuran>
we are using local_apps to launch firefox because we need to lauch some flash web applications impossible to launch in remote due to the load on server
07:56
so, we have a problem when users want to print something downloaded from firefox. The printer is connected to server. But when users download any document, the document is saved on client and the printer is unavailable
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07:57
<joamuran>
The ask is if is possible launch firefox in remote, but flash plugins in local
07:57
<work_alkisg>
!fatclients
07:57
<ltsp`>
fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
07:57
<work_alkisg>
Have you read about that? ^
07:58
It makes local apps, printers etc much more easier to manage, since everything is local (via nbd/sshfs etc of course)
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07:59
<joamuran>
yes, we used to use fat clients, but there are problems with printing, so we decided to use clients as thin clients
08:00
the common situation is using fat clients
08:00
<work_alkisg>
What problems with printing?
08:01
<joamuran>
sharing printer... problems with cups...
08:01
not related with ltsp
08:01
<work_alkisg>
Printers don't work with cups and you expect them to work with ltsp?
08:01
I don't think that's very optimistic... :)
08:01
*I think it's too optimistic...
08:03
<joamuran>
it can work in server and thin clients, the problem is that they use a printer counter written in java (!""·%$%!"!"*), and does not seem to work very fine...
08:05
<work_alkisg>
Anyways, no, while it would be very nice if flash ran locally and firefox remotely, I don't think anyone has found any way to do it
08:05
<joamuran>
An ugly manner to solve it is using two menu entries, one for firefox in local and other in remote... so, they can select firefox to launch deppending on they want to do...
08:05
I supposed that...
08:06
Thank you anyway
08:07
<work_alkisg>
I think you should focus on getting the printers working normally...
08:07
I.e. without ltsp first, and then try to make them work with ltsp
08:09
<joamuran>
yes... that's the solution, but the printing service is managed by an external support, and it seems difficult to contact them...
08:09
we only were looking for a temporal solution...
08:12
Other question not related to it... any weeks ago we were takling there and anybody told anything about ltsp version 6.Do you know when is planned to release it? Or where can we follow its development and state?
08:15
<work_alkisg>
It's progressing very slowly, so no dates etc
08:16
Maybe in a couple of years...
08:17
<joamuran>
Thanks! Sure that it will be a great advance!
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10:23
<work_alkisg>
!alkisg-todo
10:23
<ltsp`>
alkisg-todo: (#1) support xnbd-proxy for local caching: https://bitbucket.org/hirofuchi/xnbd/wiki/Home#!scenario-2-simple-proxy-server-distributed-copy-on-write, or (#2) replace "kernel memtest86+.bin" with "linux memtest86+.bin", see r1516
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11:39
<chitta>
hi
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15:09
<wellington>
Anyone know where I can find the picture starting the ltsp?
15:11
Anyone know where I can find the picture starting the ltsp?
15:16
<vagrantc>
wellington: don't really understand your question...
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15:22
<ogra_>
i guess he wanted a photo from a bootscreen :)
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16:10
<alkisg>
vagrantc: have you ever looked into UEFI support in LTSP?
16:11
<vagrantc>
no
16:12
probably should at some point
16:12
<alkisg>
I think most things are in place nowadays, we could do it with just a bit of scripting
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16:23
<JTEAM>
Hi, I need some help on using LTSP with the objective to connect thinclients directly to a Windows RDP Server
16:24
<Hyperbyte>
Hi
16:24
!ask
16:24
<ltsp`>
ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
16:28
<alkisg>
In a nutshell, you run ltsp-build-client, and put SCREEN_07=xfreerdp <params> in lts.conf, it's quite simple but underdocumented
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16:39
<Hyperbyte>
-der ? ;-)
16:39
<JTEAM>
Sorry but I'm not good on Linux! where can I find de lts.conf?
16:39
I'm using ubuntu 14.0
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16:45
<Hyperbyte>
!lts.conf
16:45
<ltsp`>
lts.conf: (#1) http://manpages.ubuntu.com/lts.conf, or (#2) lts.conf manpage is available in the ltsp-docs package
16:46
<Hyperbyte>
It's in /var/lib/tftpboot/ltsp/<arch>/lts.conf
16:48
<JTEAM>
But I need to create it? Or is suposed to already have oe there?
16:52
<alkisg>
You need to create it, start with these:
16:52
[Default]
16:52
SCREEN_07=xterm
16:52
When you get an xterm on the client, run xfreerdp to connect to the windows server,
16:52
once you get the correct xfreerdp command, put it in SCREEN_07...
16:53
<JTEAM>
I tried to create it by the GUI but gives me deny on writting to folder
16:55
<alkisg>
sudo gedit /var/lib/tftpboot/ltsp/i386/lts.conf
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17:22
<vagrantc>
alkisg: i vaguely recall you wanting to commit something to ltsp? memtest?
17:28
<JTEAM>
After creatin the file do I need to update the image?
17:29
<vagrantc>
not in tftpboot
17:29
JTEAM: you only need to update the image if you modify files in /opt/ltsp/
17:33
<JTEAM>
When the thinclient starts It promps user and password, it's possible to do autologin?
17:34
<vagrantc>
yes
17:34
but you need to configure one user per thin client on the server
17:35
<JTEAM>
It's needed to have per device username and password?
17:36
<Hyperbyte>
JTEAM, you cannot log in more than 1 computers with the same user and password.
17:36
Well actually you can, but most applications cannot be started twice.
17:37
And your settings can be overwritten
17:44
<vagrantc>
unless you're able to do kiosk mode ... then you don't need any accounts on the server, but your users loose data between sessions
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18:20
<alkisg>
vagrantc: re: memtest, yes, undoing the relevant revision would be nice...
18:20
!alkisg-todo
18:20
<ltsp`>
alkisg-todo: (#1) support xnbd-proxy for local caching: https://bitbucket.org/hirofuchi/xnbd/wiki/Home#!scenario-2-simple-proxy-server-distributed-copy-on-write, or (#2) replace "kernel memtest86+.bin" with "linux memtest86+.bin", see r1516
18:20
<alkisg>
It's r2516, not 1516...
18:20
It would need to go to included-files-to-pxelinux (there's a variable but I don't remember its name), so that it ends up to the end of pxelinux.cfg/ltsp
18:21
And it would need to be "linux memtest", not "kernel memtest"
18:21
More on that tomorrow though, or maybe next week... :)
18:22
<vagrantc>
alkisg: was hoping to get a new upstream version and upload to debian in the next few days
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19:03
<alkisg>
vagrantc: where would you like memtest/localboot in the menu?
19:03
In some "Other boot options" menu item in the end?
19:05
Also, since "linux" is better than "kernel" (skips unnecessary autodetection), maybe we should always use that one...
19:06
And, why not, support a file called "custom" if it exists, and just append it at the end of the "ltsp" file, it's just one line to do that
19:10
<vagrantc>
alkisg: i like the idea of a submenu for memtest
19:10
alkisg: as long as "linux" vs. "kernel" works with fairly old versions, sure.
19:10
alkisg: regarding custom ... appends a file custom from where?
19:10
alkisg: otherwise, sure.
19:11
<alkisg>
vagrantc: pxelinux.cfg/custom => a file made by sysadmin
19:11
E.g. I would use it to add "win98 boot disk.img" etc
19:11
Just a quick hack for a couple of user defined submenus
19:11
One line only, test -f && append the file
19:13
'linux' works in at least syslinux 4.05, i.e. squeeze-backports, maybe even in plain squeeze...
19:14* vagrantc forgets if pxelinux.cfg is both in /boot and /var/lib/tftpboot/ltsp/ARCH/
19:15
<vagrantc>
alkisg: as long as it's supported in wheezy, i'm fine with it.
19:16
<alkisg>
pxelinux.cfg is in chroot/boot/, and then copied to tftp
19:16
I think "linux" has been introduced along with "kernel", so yup we're fine wrt compatibility
19:17
<vagrantc>
doesn't it require the linux.c32 ?
19:17
<alkisg>
No
19:17
"kernel" means autodetect
19:17
<vagrantc>
autodetect what? :)
19:18
<alkisg>
linux, comboot, com, etc
19:18
while "linux.c32" means "alternative loader for linux kernels"
19:18
<vagrantc>
ok.
19:18
<alkisg>
http://www.syslinux.org/wiki/index.php/SYSLINUX#KERNEL_file
19:19
.bin means "cd boot sector"
19:19
<vagrantc>
right
19:19
<alkisg>
That's why it fails with "kernel" and succeeds with "linux"
19:19
It's the same as if we just renamed memtest.bin to memtest.somethingelse
19:19
<vagrantc>
that simplifies the code a good deal.
19:20
<alkisg>
I'm not in my development pc now, I'll try to commit that in the weekend
19:20
"Other boot options" sounds ok?
19:20
For a submenu?
19:21
Or should we just add them in the end without a submenu>
19:21
?
19:21* alkisg checks how grub does it in recent versions...
19:23
<alkisg>
Hmm, plain entry, ok, i'll copy the text from grub
19:24
We should probably include uefi support in jessie too though
19:24
<vagrantc>
depends on how many options we're likely to see
19:24
<alkisg>
It'll become muh more common until jessie eol
19:24
*much
19:24
<vagrantc>
i don't even know where to start with UEFI
19:24
<alkisg>
Nothing much... just some files ending with .efi
19:25
pxelinux, memtest, signedd kernels etc, it's just about file names though, nothing special
19:25
<vagrantc>
kind of like the .nbi images of so much legacy pain?
19:26
<alkisg>
E.g. I have laptops in UEFI and I have to enter the bios in order to switch them to legacy bios to netboot them, and then back to uefi to boot them locally
19:27
There are some dhcp-related changes too though, but just a couple of lines there as well nothing much
19:28
<vagrantc>
worst case that can be added manually
19:28
<alkisg>
Yup
19:29
<vagrantc>
but generating the .efi files ... that would be better done in code, i'm guessing
19:29
<alkisg>
No no the .efi files come with the packages
19:29* vagrantc wishes update-kernels was split into modules
19:29
<alkisg>
memtest provides memtest.efi, syslinux provides pxelinux.efi etc
19:29
<vagrantc>
aha
19:29
<alkisg>
and linux-image provides linux-signed
19:29
<vagrantc>
ipxe.efi ... :)
19:29
<alkisg>
Right
19:30
Although if you're already netbooting, you'd use the other wrapper, whatsitsname... undionly.kpxe?
19:30* vagrantc doesn't see memtest.efi
19:30
<alkisg>
Are you on amd64?
19:30
<vagrantc>
yes
19:31
nor linux-signed whatever it's called
19:31
<alkisg>
$ dpkg -S /boot/memtest86+.elf
19:31
memtest86+: /boot/memtest86+.elf
19:31* vagrantc suspects Jessie's EFI support may be missing some bits
19:31
<alkisg>
vmlinuz-3.13.0-37-generic.efi.signed
19:31
<vagrantc>
no such files
19:31
what are you on, Ubuntu? :P
19:32
<alkisg>
Haha
19:32
Signed files can be used without uefi too, maybe jessie is too advanced and just doesn't name them "signed" :P
19:32
<vagrantc>
so i guess not so urgent for Jessie, if none of the other bits are there...
19:32
<alkisg>
(or it doesn't have the keys to sign them...)
19:32
OK, I'll stick to the non-efi changes
19:32
<vagrantc>
yeah, i seem to recall there having been no real consensus on signed images for UEFI
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20:42
<Xoonionieeiyiluu>
what's up
20:42
-terminal is awesome
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