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


Channel log from 15 February 2021   (all times are UTC)

01:41lucascastro has joined IRC (lucascastro!~lucascast@177-185-133-183.dynamic.isotelco.net.br)
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10:38
<antareS_>
Hello!!! just switching to the new LTSP and coming from PiNet (which made everything veeery easy) and looking for some advice on how to install ltsp in a virtual machine. I've been looking around the past tw days but found little about the new LTSP
10:39
<alkisg>
Hello antareS_
10:39
Everything about the new ltsp is in ltsp.org
10:40
https://ltsp.org/docs/installation for the usual ltsp server installation, even if it's in a vm,
10:40
And https://ltsp.org/docs/installation/raspios/ for raspberries
10:41
pinet just added a gui to run the ltsp commands, while the code that made everything easy was already in ltsp :)
10:41
<antareS_>
Yes, I read that. I want to make a new fresh install and I've made it already. But no success and I guess it is because I am installing LTSP in a VM.
10:41
<alkisg>
What is the "no success" error message?
10:42
What part is failing and what error does it show?
10:45
<antareS_>
Basically the RPi's couldn't get the OS. But my question here is about: possible keywords, hints, to search for and try before asking for "real help"... I mean things I should have read thorougly (apart from the ltsp docs) If you think, for instance, that running LTSP in a VM is a no-go
10:45
<alkisg>
You only need the 2 URLs I linked to, and a "bridged mode NIC" in your LTSP VM
10:45
Nothing more to read about it
10:48
<antareS_>
OK. I'll start over again and come back later.
10:48
<alkisg>
OK
10:48
antareS_: it's a good idea to do the chrootless mode first, and boot a pc client
10:48
I.e. all the installation page
10:48
And THEN to go to the raspios page, and boot a raspberry
10:49
As raspberries are more difficult to troubleshoot, they don't show messages before they receive their bootcode.bin etc
10:49
<antareS_>
OK but... chrootless means I serve "the server itself" doesn't it?
10:49
<alkisg>
Yes
10:49
You can delete the image afterwards without issues
10:50
<antareS_>
OK. I'll do the simplest first and then move on. By the way... I'd love to keep my pinet image... I tried to copy the chroot and use it with the new LTSP. is it crazy?
10:51
<alkisg>
From "ltsp server" to "chrootless" it's just `ltsp image / && ltsp ipxe`; while to delete it, it's `rm /srv/ltsp/images/x84_64.img && ltsp ipxe`
10:51
It should be possible to keep your old pinet image, sure. Although you don't need the ltsp-client packages anymore and you can uninstall them
10:51
Follow the raspios page inside your pinet chroot
10:52
Note though that pinet was using the debootstrap command, which resulted in a much lower quality image than the new ltsp
10:52
I.e. it was missing all the raspberry pi os optimizations
10:58
<antareS_>
Well, I have to ponder if it is an option. I had it configured very simple (just openbox) and I am in a sort of a hurry... and keeping the old image will save a lot of time. But I should move on for sure.
10:59
<alkisg>
Sure, you should be able to keep it even without any changes at all
10:59
The new LTSP sends its code while it boots, so it doesn't even need an ltsp-client package
11:01
<antareS_>
Aah... I see that no desktop servers (headless?) are not recommended. I wanted to install it in a no-desktop ubuntu 20 server. Could it be an issue? Or the recommendation is just for making things easier with GUIs?
11:02
<alkisg>
It's not a problem to use a headless server, the same instructions apply, even for chrootless
11:02
The booted client will again be headless, of course
11:03
The recommendation is there in order to be able to use epoptes to control the clients etc
11:07
<antareS_>
Ok, so in my first attempt I should xpect to have a headless thing (the same as the server, being ltsp chrootles) and if i am able to serve the chroot, as it always used to be. Yhanks
11:07
Thanks
11:38
Well, i have to say... it's absolutely appealing... chrootless up and running!!! Now time to try the chroot thing.
12:19
Well, just installed the old chroot and tested with a laptop. Of course it doesn't boot but at least ipxe menu is modified and I see there are attempts to get the thing. I guess I have the problem with the RPi itself. I followed the netboot procedure, but in my case I have a RPi 3 and no way without SD card. With SD card, however, there is some
12:19
network activity and, in fact, I get something I guess interesting from wireshark
12:19
but nothing on screen
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12:34
<douglas_br>
hello! How are you?
12:34
<antareS_>
OK... i used wireshark to see what's going on... basically there are complaints about not finding relevant files. I made a simple dump here, just in case you can take a look
12:34
https://gist.github.com/jtornero/d4705ebab678d5dd3248ae92eb711bff
12:37
<douglas_br>
someone have motherboard with aptio setup utility? (american megatrends BIOS). I have mini pc with this bios and cannot find option to change the boot mode for lan / network / ipxe
13:00
<alkisg>
dragon788: upload screenshots for us to see
13:01
antareS_: not all the files are needed. What's the output of ls -l /srv/tftp | nc termbin.com 9999 ?
13:01
dragon788: sorry I meant douglas_br
13:01
douglas_br: upload screenshots for us to see
13:06
antareS_: note that rpi3 can boot either with sd-card or without it
13:06
If you ARE using an sd card, make sure it has the latest bootcode.bin and not an old one; it got fixed a year ago or so
13:06
<antareS_>
https://termbin.com/cgl9
13:07
<alkisg>
antareS_: you didn't follow the raspios page steps carefully
13:07
antareS_: here's mine: https://termbin.com/tty2
13:07
This is done by the ltsp kernel step, after you've configured the correct rpi_image in ltsp.conf
13:08
https://ltsp.org/docs/installation/raspios/#server-preparation
13:08
This is needed because rpi is implements netbooting in a very, very bad way :)
13:09
I've filed bug reports about it but they didn't really bother fixing their bugs
13:10
Note that in ltsp5 (=what you think that pinet did, it was done by ltsp5), an sd card was needed with a local kernel etc
13:10
In the new ltsp, I reimplemented that part better so the sd card isn't needed anymore
13:10
<antareS_>
No. I guess it was for a new raspios setup. I tried copying the chroot. Guessed those instructions were for new installs and for existing chroots the simple approach (ltsp image [chroot]) will be enough.
13:10
<alkisg>
You'll need half of the instructions there
13:11
The simple approach would be enough for other architectures, but raspberries need these extra commands and steps
13:11
You need ALL that page, except for the "chroot preparation" paragraph
13:13
<antareS_>
OK, I just followed the ltsp.conf instructions, I mean, the "Server preparation" but no the others. I'm starting over, thanks a lot!!!!!!!!
13:14
I guess instead "raspios" it can be named whatever I like (I inherited 'armhf' from my old ltsp/pinet installation)
13:14
<alkisg>
antareS_: it's a good idea to rename armhf to raspios, it'll save you time troubleshooting things
13:14
But sure, you can name it however you want. Avoid spaces.
13:15
Also note that things got moved from /opt/ltsp to /srv/ltsp
13:18
<antareS_>
OK, thanks
13:18
<alkisg>
antareS_: also do the steps below this line: At this point, Raspberry Pi OS should be in /srv/ltsp/raspios. This chroot isn't ready for netbooting yet, the following commands are needed:
13:18
They might not be needed with ltsp5, but do them just in case
13:18
<douglas_br>
dragon788 here: https://imgur.com/ZB7Qf2R
13:19
<alkisg>
douglas_br: I typed "dragon788" by mistake; it was me talking to you; dragon788 hasn't said anything :)
13:20
douglas_br: the other tabs will be needed too; you'll need like 10 screenshots :)
13:20
Upload these tabs next: advanced, chipset, boot,
13:25
<douglas_br>
sorry! I need to say to person to send me the screenshots because mini pc is in other city. But, we enter all mode: advanced, chipset, boot.
13:26
<alkisg>
douglas_br: no problem, you may also upload them in the github discussion; I'll go afk for a while anyway, back in a couple of hours...
13:28
<douglas_br>
yes alkisg I did start in github. Thank you
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16:34
<eu^1909212715>
hi, i'm new to this chat. I have problems with ltsp clients
16:36
<alkisg>
Hi eu^1909212715
16:36
eu^1909212715: what problems?
16:37
<eu^1909212715>
i am this guy https://github.com/ltsp/ltsp/discussions/400
16:38
<alkisg>
It's best if you use a nickname in IRC. To set one, type this command here in irc: /nick alequint8912
16:38
Let me re-read that discussion...
16:38
Ah right where your home isn't mounted
16:38eu^1909212715 is now known as alequint8912
16:39
<alkisg>
Can I see via vnc? If yes, do this:
16:39
!vnc-alkisg
16:39
<ltspbot>
vnc-alkisg: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect alkisg.ltsp.org; this is a reverse connection, it doesn't need port forwarding etc.
16:41
<alequint8912>
ok wait
16:43
I can not connect
16:44
<alkisg>
What is the error message?
16:44
<alequint8912>
******************************************************************************
16:44
Have you tried the x11vnc '-ncache' VNC client-side pixel caching feature yet?
16:44
The scheme stores pixel data offscreen on the VNC viewer side for faster
16:44
retrieval. It should work with any VNC viewer. Try it by running:
16:44
    x11vnc -ncache 10 ...
16:44
One can also add -ncache_cr for smooth 'copyrect' window motion.
16:44
More info: http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching
16:44
15/02/2021 11:45:08 Making connection to client on host alkisg.ltsp.org port 5500
16:44
|D-chain|-<>-192.168.70.3:3128-<><>-81.186.20.0:5500-<--denied
16:44
15/02/2021 11:45:08 rfbConnectToTcoAddr: failed to connect
16:44
: Connection refused
16:44
15/02/2021 11:45:08 connection failed: Connection refused
16:44
15/02/2021 11:45:08 connect_tcp: trying: alkisg.ltsp.org 5500
16:44
|D-chain|-<>-192.168.70.3:3128-<><>-81.186.20.0:5500-<--denied
16:44
15/02/2021 11:45:08 rfbConnectToTcoAddr: failed to connect
16:44
: Connection refused
16:44
15/02/2021 11:45:08 connect_tcp: connection failed: Connection refused
16:44
15/02/2021 11:45:08 connect_tcp: re-trying alkisg.ltsp.org 5500
16:44
<alkisg>
!paste
16:44
<ltspbot>
paste: To avoid channel flooding, please upload text longer than 3 lines to http://paste.debian.net. Don't forget to paste the resulting URL here.
16:45
<alkisg>
Do not paste more than 3 lines in IRC, because freenode will kick/ban you...
16:46
Do you have a firewall that blocks the connection?
16:46
Try `sudo ufw disable` in case you have ufw
16:46
<alequint8912>
D-chain|-<>-192.168.70.3:3128-<><>-81.186.20.0:5500-<--denied
16:46
15/02/2021 11:45:08 connect_tcp[ipv6]: connect: Connection refused
16:46
15/02/2021 11:45:08 connect_tcp[ipv6]: setsockopt IPV6_V6ONLY: Protocol not available
16:47
<alkisg>
Hmm why ipv6?
16:47
It's an ipv4 address
16:48
<alequint8912>
I don't know, I have an IPv4 address
16:49
<alkisg>
Check your firewall. Maybe that's what's causing all the issues.
16:49
alequint8912: are you using a proxy to access the internet?
16:50
Yeah I guess that's the issue, you're going through a proxy and the proxy blocks you
16:51
Try this: x11vnc -connect alkisg.ltsp.org:80
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16:55
<alkisg>
OK
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17:11
<alkisg>
alequint8912: so the command you needed was, inside the VM: sudo apt install --install-recommends ltsp epoptes-client
17:11
That's because stupid Linux Mint disables `--install-recommends`, it's a bad distribution
17:11
I'll update ltsp.org to note that
17:12
<alequint8912>
s the only distribution that works for me
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17:13
<alequint8912>
the client is very poor
17:13
intel D2500
17:13
2GB ram
17:13
i try with ubuntu but does not load
17:14
<alkisg>
Ubuntu MATE is much lighter
17:14
Don't try Ubuntu GNOME, try Ubuntu MATE, I also have the link for the .iso in the installation page
17:14
And with 2 GB RAM, it might be best to use Ubuntu MATE 18.04 32bit as the client VM
17:15
<alequint8912>
can we prove it?
17:15
<alkisg>
Sure, boot any live cd or installation that you like, open a terminal and type `free`
17:15
I've done that, and Mint needed a whole lot ram than mate
17:16
It's: GNOME > KDE > XFCE > MATE > LXDE
17:16
I don't remember cinnamon, I think it's as heavy as GNOME
17:17
<alequint8912>
this version is Linux mint 18 xcfe
17:17
<alkisg>
OK, so it's just a bit more heavy than ubuntu mate. Is it 32 or 64 bit?
17:17
<alequint8912>
32
17:17
<alkisg>
OK
17:17
Which Ubuntu version is that?
17:17
Is it based on 18.04?
17:17
<alequint8912>
the server?
17:18
20.04
17:18
<alkisg>
No, the Linux Mint 18 XFCE
17:18
<alequint8912>
i think 16.04
17:18
<alkisg>
cat /etc/os-release, should have it
17:19
Anyway I'd go for MATE 18.04; but this should also work
17:21
<alequint8912>
it doesnt say
17:21
ok i wil type de command
17:22
you are watching my screen?
17:23
<alkisg>
No, let me see..
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17:33
<alequint8912>
ok I create the image
17:34
and run ltsp ipxe
17:34
ltsp nfs
17:34
ltsp initrd
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17:52
<alkisg>
alequint8912: everything ok now?
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18:05
<alequint8912>
no, stay the same
18:06
Im downloading ubuntu mate 18.04
18:06
maybe with him it will work
18:08
I can't add the ltsp ppa repository on linux mint
18:08
can't install ltsp library
18:12
<alkisg>
alequint8912: it's not needed
18:12
You ran ltsp image and it didn't work after that?
18:13
alequint8912: login to theclient, and run sshfs, is it there?
18:14
<alequint8912>
no is not there
18:15
cant find the package
18:16
<alkisg>
alequint8912: then you didn't run ltsp image properly
18:16
Maybe you installed sshfs in the copied vm, but not in the correct one
18:17
<alequint8912>
let me see
18:19
ok in the vm it say missing host
18:19
but I use that vm  when create the image
18:20
let me do it again
18:20
I win type thi command ltsp image VM-flat
18:20
then ltsp ipxe
18:21
then ltsp nfs
18:21
and ltsp initrd
18:21
is correct?
18:34
ok i bott the client and recognize sshfs
18:34
and mount home
18:37
<alkisg>
Great
18:39
<alequint8912>
wow it works jajaja
18:39
save my changes
18:39
<alkisg>
All this because of silly linux mint breaking debian policy with --no-install-recommends :)
18:39
<alequint8912>
thanks you very much
18:39
<alkisg>
You're welcome
18:39
<alequint8912>
so you recomends intall ubuntu mate
18:40
<alkisg>
If you remember to use --install-recommends, then mint isn't an issue, you can keep using it
18:40
But for new installations, yeah I believe ubuntu mate is superior to mint for a lot of reasons
18:40
<alequint8912>
ok I will try ubuntu
18:40
<alkisg>
With just 2 GB RAM, remember to use a 32bit version, so either up to 18.04, or debian
18:41
I.e. don't use ubuntu 20.04, it's 64bit only
18:41
And it wastes a lot of RAM
18:41
<alequint8912>
ok thanks
18:41
<alkisg>
np
18:41
<alequint8912>
so where I give you the stars
18:41
<alkisg>
What stars?
18:42
For "question solved" in github?
18:42
<highvoltage>
there's an ice-cream tub full of stars, I usually just take one of the gold ones and push it on to alkisg's forehead
18:43
<alkisg>
Ice cream? Where? Where?
18:43
:D
18:43
<alequint8912>
jaja I dont know the corrent answer, doesnt it work like that
18:43
?
18:43
yes question solved
18:43
<alkisg>
OK let me post a reply
18:44
alequint8912: last reply there: https://github.com/ltsp/ltsp/discussions/400
18:44
OK now we're politically correct, we have a star :D
18:47
<alequint8912>
so this chat support only ltsp or other things
18:47
<alkisg>
ltsp and epoptes
18:48
<alequint8912>
ok thanks
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19:05
<highvoltage>
alkisg: I scream, you scream, it's 2021, we all scream
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19:12
<antareS_>
Well... in PiNet all the user "lived" ad the server and had their own home at the server. How is it done now?
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20:08
<alkisg>
antareS_: pinet is ltsp5. I wrote the code to boot raspberries in ltsp5 myself :)
20:09
The new LTSP works the same way as the old LTSP, the user accounts and home are on the server
20:10
I.e. it's best to say "in ltsp5..." than to say "in pinet", because pinet had no code for that; it was all done by ltsp
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20:45
<antareS_>
alksig: From now on, I'll refer to it as ltsp5... it was just for putting it into context.
20:45
so fro creating an account, I just create users on the server machine, isn't it?
20:55
<alkisg>
Yes, and you run `ltsp initrd` to have them show up on the clients on the next reboot
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