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