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


Channel log from 9 October 2018   (all times are UTC)

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15:30
<adbenitez>
pls help!
15:30
I am getting an error: "Negotiation: Error: Read failed: End of file"
15:31
seems to be the NBD
15:33
I am using just the default configuration (except ip ranges for dnsmasq)
15:33
I am following http://wiki.ltsp.org/wiki/Installation/Ubuntu
15:34
and used "ltsp-config dnsmasq --overwrite"
15:34
can someone help please?
15:44
<alkisg>
adbenitez: did you run ltsp-update-image -c ?
15:44
adbenitez: what's the output of this? ls -l /opt/ltsp/images
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15:53
<adbenitez>
hello alkisg I had seen some irc logs of you talking about the same problem I had
15:53
http://irclogs.ltsp.org/?d=2017-01-25
15:54
"<soroch> Hi. When i boot LTSP i get "ALERT! /dev/nbd0 does not exist. Dropping to a shell". Please help."
15:54
I have the same problem
15:55
alkisg: yes, I excecuted "ltsp-update-image -c /" as suggested in the official guide (http://wiki.ltsp.org/wiki/Installation/Ubuntu)
15:56
<||cw>
that log ins't loading. what was the solution to their issue?
15:57
<adbenitez>
yes! the logs take a while to load
15:57
<||cw>
no, it actually failed
15:58
<adbenitez>
I am having intermitents problems to access the ltsp wiki also
15:58
solution givn by Statler
15:58
<Statler> ah, very good 10:07 im old ;) 10:08 but I remember now 10:08 [opt/ltsp/stretch.amd64] 10:08 exportname = /opt/ltsp/images/stretch.amd64.img 10:08 readonly = true 10:08 authfile = /etc/ltsp/nbd-server.allow 10:08 [opt/ltsp/stretch.amd64] <<< this is the trick
16:00
<||cw>
adbenitez: are you using a custom image on debian? if you're following the guide that is not your issue
16:00
maybe same symptom, but otherwise unrelated
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16:13
<adbenitez>
sorry I was disconnected could not see any reply since my last post
16:14
so any advice?
16:15
<alkisg>
(06:44:33 μμ) alkisg: adbenitez: what's the output of this? ls -l /opt/ltsp/images
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16:15
<adbenitez>
I had a 32 bit image
16:16
this is the only file /opt/ltsp/images/i386.img
16:17
when I try: nbd-client localhost -N /opt/ltsp/i386 /dev/nbd0
16:17
I get: Negotiation: ..Error: Read failed: End of file
16:17
<alkisg>
output please
16:17
<adbenitez>
?
16:18
wait a second please
16:18
total 3147052 -rw-r--r-- 1 root root 1610932224 oct 8 12:24 i386.img -rw-r--r-- 1 root root 1611640832 oct 8 12:11 i386.img.old
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16:19
<alkisg>
So you don't have an image there
16:19
You only have the old one
16:19
Run ltsp-update-image -c / again
16:19
<adbenitez>
no
16:19
please sorry look line by line
16:19
-rw-r--r-- 1 root root 1610932224 oct 8 12:24 i386.img
16:20
-rw-r--r-- 1 root root 1611640832 oct 8 12:11 i386.img.old
16:20
chat ignored the return
16:21
<alkisg>
sorry i'll be back in 20 mins
16:21
<adbenitez>
ok
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17:51
<adbenitez>
alkisg: are you back?
17:56
<alkisg>
I was, 1.5 hour ago :D
17:56
I'm a bit afk now... so, try this:
17:56
!nbd-client
17:56
<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
17:56
<alkisg>
Replace the ip there with the server one
17:56
Does that correctly mount the nbd image?
17:59
<adbenitez>
no
17:59
msg: Negotiation: ..Error: Read failed: End of file Exiting.
18:00
<vagrantc>
pgrep -l -a -f nbd
18:00
<alkisg>
that means your nbd server configuration is wrong
18:00
<adbenitez>
also "/opt/ltsp/i386" doesnt exist in the filesystem
18:01
<Hyperbyte>
alkisg, fat client test was a success so far. I've been asked to order 8 additional ones. :-)
18:01
<alkisg>
grep -r . /etc/nbd-server/conf*
18:01
Great!
18:01* alkisg is a bit afk, bbiab...
18:02
<vagrantc>
adbenitez: /opt/ltsp/i386 is the "name" used in the nbd configuration
18:02
<adbenitez>
pgrep -l -a -f nbd output: 754 knbd-recv \n 1007 /bin/nbd-server
18:02
<vagrantc>
so, it's running at least...
18:02
<adbenitez>
vagrantc: sorry I am new to this
18:03
<vagrantc>
adbenitez: it does look like a path, so it's a reasonable question :)
18:03
for historical reasons, mostly
18:03
<adbenitez>
alkisg grep -r . /etc/nbd-server/conf* output:
18:04
<vagrantc>
this might be best in a pastebin
18:04
!pastebin | echo adbenitez
18:04
<ltsp>
adbenitez pastebin: try !paste
18:04
<vagrantc>
!paste | echo adbenitez
18:04
<ltsp>
adbenitez paste: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
18:05
<adbenitez>
vagrantc: haha thanks for that
18:05
vagrantc: the url doesnt work
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18:05
<vagrantc>
just use pastebin.com then
18:05
<adbenitez>
yes that worked
18:06
https://pastebin.com/Tsc0Jbzz
18:06
<vagrantc>
looks like you haven't configured nbd to serve your image
18:07
<adbenitez>
I was following the guide in the wiki
18:07
<vagrantc>
which guide in which wiki? :P
18:07
<adbenitez>
http://wiki.ltsp.org/wiki/Installation/Ubuntu
18:07
I fellt that it was not complete
18:08
but since I am a newbie...
18:08
<vagrantc>
i'm unable to get to wiki.ltsp.org at the moment...
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18:10
<vagrantc>
basically, there might be a step something like: ltsp-config nbd
18:10
ltsp-config nbd-server
18:11
maybe you ran that before generating the image? that would explain why you have swap configured by not the image
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18:12
<vagrantc>
even the wayback machine doesn't know about that wiki page... *sigh*
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18:19
<adbenitez>
sorry, there was a blackout
18:20
so what config guide can you suggest me to use for the nbd-server
18:20
?
18:21
<alkisg>
adbenitez: ltsp-update-image does configure nbd server if it sees it's not configured yet
18:21
But ok anyway run this: sudo ltsp-config nbd-server
18:22
<adbenitez>
I had to use --overwrite, do I proceed?
18:23
msg: File /etc/nbd-server/conf.d/swap.conf exists but --overwrite was not specified.
18:24
<alkisg>
Did it create /etc/nbd-server/conf.d/ltsp_i386.conf ?
18:24
(yeah, use overwrite)
18:25
<adbenitez>
"/etc/nbd-server/conf.d/ltsp_i386.conf" was not created
18:25
<alkisg>
What's the output of this? sudo ltsp-info | nc termbin.com 9999
18:25
It sounds like something is wrong in your setup
18:26
If you're saying you have the image but ltsp-config nbd-server doesn't create the nbd configuration
18:26
<adbenitez>
I have issued the command but "/etc/nbd-server/conf.d/ltsp_i386.conf" was not created eithed
18:26
either
18:26
<alkisg>
Btw are you using sudo there?
18:26
We need the output of the sudo ltsp-info command, it's in termbin
18:28
<adbenitez>
sudo ltsp-info output: No LSB modules are available. \n nc: getaddrinfo: No address associated with hostname
18:28
BTW the server doesnt have direct access to internet
18:30
alkisg: yeah I am using sudo: "sudo ltsp-config nbd-server --overwrite"
18:32
it creates: /etc/nbd-server/conf.d/swap.conf but dont creates /etc/nbd-server/conf.d/ltsp_i386.conf
18:33
I am just following the wiki installation guide, using the chrootless way (option b in the guide)
18:36
alkisg: output of ltsp-config: https://pastebin.com/awNwJw8q
18:36
I mean: sudo ltsp-info
18:36
sorry
18:38
??
18:41
also "/etc/ltsp/nbd-server.allow" doesnt exist :(
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18:49
<adbenitez>
please, can someone give some light about why ltsp isnt configuring nbd-server?
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18:56
<alkisg>
adbenitez: you're not using the tutorial
18:56
You don't even have the correct ltsp versions
18:56
Those are from 2017, the tutorial uses ltsp 2018
18:56
Please follow the tutorial
18:57
<adbenitez>
but I had added the greek ppa!!
18:58
and issued the commands in the tutorial
18:58
<alkisg>
Your ltsp-info says otherwise...
18:58
Ah
18:58
You're using ubuntu 16.04
18:58
While the tutorial says "18.04"
18:58
<adbenitez>
ugh!
18:59
can't I run the latest ltsp in 16.04??
18:59
<alkisg>
No
18:59
Noone backported it there
18:59
<adbenitez>
may I do a dist upgrade??
18:59
<alkisg>
Sure, if you like
18:59
dist-upgrade takes an hour, an installation takes half
19:00
Whatever you prefer :)
19:00
(actually, do-release-upgrade)
19:00
<adbenitez>
wow that will take a lot of time!
19:00
<alkisg>
Yeah a clean install is much easier
19:01
<adbenitez>
and my company is connected at speeds really low(100KBps)
19:01
<alkisg>
You can download an ubuntu.iso from home...
19:02
It's still strange that ltsp-config nbd-server didn't work in 16.04 though
19:03
<adbenitez>
yeah!
19:03
<mwalters>
p sure they work on my 14.04 install
19:03
<adbenitez>
ugh!?
19:05
now I don't know what to do, if install 18.04 or try an old ltsp :(
19:06
<||cw>
adbenitez: is this a new ltsp install, or old that stopped working?
19:06
<mwalters>
I just set up a test server w/ 18.04 to dry-run our upgrades. Getting it up and running was pretty easy and quick
19:06
<adbenitez>
||cw: a new one
19:07
<||cw>
did you reboot after configing everything?
19:07
<adbenitez>
mwalters: I am at really low connection speed
19:07
several times
19:08
||cw: the problem is that ltsp-config nbd-server isn't working
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19:09
<adbenitez>
thanks for the help guys! I will try upgrading to 18.04
19:10
have a nice day, bye
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20:19
<sutula>
alkisg: Do you or anyone here have experience upgrading a working 16.04 setup to 18.04? Apart from a reinstall of LTSP, is it likely that a release upgrade of Ubuntu might just work? Anyone tried already?
20:31
<||cw>
a couple people have reported it works fine
20:31
I did a plain server upgrade and it was fine.
20:32
that one wasn't ltsp though
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20:57
<sutula>
||cw: Thanks!
20:58* sutula will try to remember, "backups are good...backups are good"
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21:10
<||cw>
yeah, take a server image :)
21:10
also, plan on a big maintenance window, you'll want to rebiuld the client images, and make sure the ppa is used in them as well as the server
21:11
!install
21:11
<ltsp>
install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
21:11
<vagrantc>
only working backups are good, others are just traps
21:11
<||cw>
is ltsp.org down?
21:11
<vagrantc>
wiki.ltsp.org wasn't working for me earlier
21:11
<||cw>
logs either
21:11
or www
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