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


Channel log from 19 September 2019   (all times are UTC)

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08:30
<ndalezios>
Καλημέρα! Έχοντας κάνει όλες τις τελευταίες αναβαθμίσεις σε server καθώς και όλες τις διορθώσεις στο lts.conf σχετικά με το gcompris segmentation fault παρατηρώ το εξής (Όλοι οι fat clients είναι ίδιοι)Αν κάνω επιλογή
08:30
όλων από τον Επόπτη και εκτέλεση της εντολής gcompris-qt δεν ανοίγει στους clients τίποτα.Σε κάθε client ξεχωριστά αν εκτελέσω gcompris-qt παίρνω segmentation fault την πρώτη φορά. Αν το ξαναεκτελέσω στον ίδιο ανοίγει
08:30
το gcompris.Από τον επόπτη όμως με επιλογή clients και εκτέλεση δεν ανοίγει.Καμιά ιδέα?Ευχαριστώ
08:32
<alkisg>
Καλημέρα ndalezios
08:32
Είσαι στο αγγλικό κανάλι, για να έρθεις στο ελληνικό γράψε: /join #ts.sch.gr
08:33
Γράψ' το εδώ όπως είσαι στο irc, σαν να γράφεις απλή συζήτηση...
08:33
/join #ts.sch.gr
08:35
ndalezios: είσαι εδώ;
08:37
<ndalezios>
sorry guys for the greek lang...
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09:32Batmoine has joined IRC (Batmoine!~Batmoine@82-64-148-127.subs.proxad.net)
09:32
<Batmoine>
Hi all
09:33
I'm follow this tutorial : https://github.com/ltsp/ltsp/wiki/installation
09:33
but i have a problem with the pxe boot on my pc bind
09:34
this error : NFS over TCP not available from "my server IP"
09:35
I have followed the tutorial to the letter, but I can not solve this error
09:35
If any of you have already encountered this error, your help is welcome :-) I am on a Ubuntu 18.04 desktop for the server
09:38
<alkisg>
Hi Batmoine
09:38
Batmoine: what's the output of `cat /etc/exports.d/ltsp-nfs.exports` ?
09:40
<Batmoine>
# Export LTSP chroots and images
09:40
# Export TFTP_DIR over NFS as well, for synching local kernels and ltsp.img
09:40
# Export home over NFS3; note this is insecure
09:40
# "no_root_squash" is for root epoptes to access /home/user/.Xauthority
09:40
# "insecure" allows access over NAT, e.g. from vbox/kvm virtual clients
09:41
Resume :
09:41
"/srv/ltsp *(ro,async,crossmnt,no_subtree_check,no_root_squash,insecure)"
09:41
"/srv/tftp/ltsp *(ro,async,crossmnt,no_subtree_check,no_root_squash,insecure)"
09:41
<alkisg>
!paste
09:41
<ltsp>
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.
09:41
<Batmoine>
ok, thx
09:42
<alkisg>
Batmoine: and this? systemctl status nfs-kernel-server
09:42
<Batmoine>
!paste # Export LTSP chroots and images
09:42
<ltsp>
Error: "paste" is not a valid command.
09:42
<Batmoine>
# Export TFTP_DIR over NFS as well, for synching local kernels and ltsp.img
09:42
# Export home over NFS3; note this is insecure
09:42
# "no_root_squash" is for root epoptes to access /home/user/.Xauthority
09:42
# "insecure" allows access over NAT, e.g. from vbox/kvm virtual clients
09:42
<alkisg>
Batmoine: don't paste files here
09:42
Go to http://paste.debian.net
09:42
Paste them there, and give us the link
09:42
Pasting files in IRC is considered spam and might get you kicked by the bots
09:43
What's the output of this? systemctl status nfs-kernel-server
09:43
Again put it to paste.debian.net..
09:43
<Batmoine>
https://paste.debian.net/1101564
09:43
:)
09:45
<alkisg>
Batmoine: can I see over VNC, as I don't have much time currently?
09:45
!vnc-edide
09:45
<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
09:46
<Batmoine>
ok
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09:50
<Batmoine>
back :)
09:51
<alkisg>
It might be related to firewall, networking etc
09:51
To test, you need another linux client in that subnet
09:51
From that other linux client, try: mount -t nfs 192.168.2.123:/srv/ltsp /mnt
09:51
If it fails, that's the issue
09:51
You can e.g. use a live cd if you want
09:52
<Batmoine>
Ok, I understand, I'll try this right now
09:52
<alkisg>
(12:34:30 PM) Batmoine: this error : NFS over TCP not available from "my server IP" ==> this does show .123 there, right?
09:52
Not the router ip, but the ltsp server ip...
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09:52
<Batmoine>
yes, is Server IP
09:53
She is ok
09:53
I will try from a live CD, I'll let you know. Thank you for you precious help
09:55
<alkisg>
Batmoine: from live cd, use this command: sudo mount -t nfs -o nolock 192.168.2.123:/srv/ltsp /mnt
09:56
It needs the "-o nolock" there
10:01
<Batmoine>
I just tested from a live CD, the command works well, I have "images" that is mounted
10:01
it works
10:02
<alkisg>
Batmoine: is the server a VM?
10:02
Can you give me access to a VM client, to see?
10:02
<Batmoine>
yes, an ESX 6.7 VM
10:03
<alkisg>
In real servers I just install virtualbox and run a vm client
10:03
In VM servers, I cannot do that :/
10:03
Anyway just boot the client and take a screenshot from the mobile phone and upload it somewhere
10:03
E.g. in https://imgur.com/upload
10:05
<Batmoine>
ok
10:08
https://imgur.com/a/VX5IzYj
10:08
That's it, I took you some pictures
10:09
And long live Google Translate! :-D
10:09
<alkisg>
Batmoine: which ubuntu version is this?
10:09
<Batmoine>
18.04 LTS
10:09
<alkisg>
Put the password in your server please
10:10
Batmoine: the problem is that the kernel can't find the network card of this client
10:10
It loads "vmware vmxnet3" etc
10:11
Can you test with another client, maybe an older one etc?
10:11
<Batmoine>
Do you want me to try to switch the network card to E1000 instead?
10:11
<alkisg>
"ipconfig: no devices to configure" => that's the important part
10:11
Are you somehow forcing that vmware driver?
10:11
Normally,autodetection is used, and the clients don't mind
10:12
Did you install vmware guest additions on the server?
10:12
<Batmoine>
The network card of my VM is set to VMxnet3, and the VMware tools are installed, I think the script is loaded with everything at this level, so the driver must be forced
10:13
<alkisg>
OK I found it at /etc/initramfs-tools/modules
10:13
But, I don't think that's a problem
10:13
<Batmoine>
ok
10:13
<alkisg>
The driver is force-loaded, but it shouldn't prohibit other drivers from being loaded,
10:13
which might just mean that this laptop is too new and linux doesn't know its network card,
10:13
so, try first with another/older client
10:14
When you tried the live cd, did you try it on that laptop?
10:14
<Batmoine>
that's quite possible, it's the last Stealth Blade
10:14
yes
10:14
<alkisg>
Was it the same 18.04 live cd?
10:14
(or 19.10)
10:14
<Batmoine>
Yes, I tried on this same client, in 18.04
10:14
<alkisg>
Then it should know the network card
10:15
<Batmoine>
ok, I will restart the live CD and watch the driver used
10:19
<alkisg>
Batmoine: I un-forced the modules, try to boot the client again when you can
10:19
<Batmoine>
Driver = R8152
10:19
(Realtek)
10:20
it's Native driver of my notebook
10:20
<alkisg>
Batmoine: are you on the live cd?
10:20
<Batmoine>
yep
10:20
<alkisg>
Give me screen there, doing this:
10:20
sudo add-apt-repository universe
10:20
sudo apt install epoptes-client
10:21
x11vnc -connect srv1-dide.ioa.sch.gr
10:21
<Batmoine>
ok
10:22
<alkisg>
/lib/modules/4.15.0-60-generic/kernel/drivers/net/usb/r8152.ko
10:22
USB?
10:22
<Batmoine>
yes
10:22
<alkisg>
Is it a usb card?
10:22
<Batmoine>
it's usb
10:22
<alkisg>
I don't think initramfs can boot from that
10:22
Doesn't it have native lan?
10:22
onboard?
10:22
<Batmoine>
ok, I'm try in other client
10:22
<alkisg>
OK
10:22
<Batmoine>
:)
10:23
<alkisg>
You probably need to add the usb drivers in the initramfs for the usb card to work
10:23
Later on it finds them from the cd/image/disk, but the initramfs doesn't have them
10:25
Batmoine: ok I think your laptop will be able to boot as well now
10:25
I included the r8152 module in the initramfs
10:29
<Batmoine>
Since another client it works!
10:29
I try from my laptop :)
10:31
awesome ! it works !
10:31
<alkisg>
;)
10:31
<Batmoine>
Thanks a lot for your help !
10:31
<alkisg>
OK lunch time, later...
10:31
<Batmoine>
And the time spent
10:31
Can I donate?
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10:31
<alkisg>
I charge 30€ per hour; if you want, send me to alkisg@gmail.com paypal whatever you like, but you don't have to
10:32
<Batmoine>
Thank you, I would not miss it, good appetite to you :)
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10:32
<alkisg>
You're welcome, bye :)
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