IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 13 February 2019 (all times are UTC)
| 06:39 | kjackal has joined IRC (kjackal!~quassel@2a02:587:3105:5d00:bc45:9b3:1d09:82de) | |
| 07:09 | ricotz has joined IRC (ricotz!~ricotz@ubuntu/member/ricotz) | |
| 07:13 | <alkisg> !cheap-client
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| 07:13 | <ltsp> cheap-client: https://www.gearbest.com/tv-box-c_11262/?attr=2081-1279
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| 07:14 | <vagrantc> alkisg: wouter is asking questions about NBD usage in LTSP ... i know you have some interesting ideas in the works
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| 07:14 | <alkisg> vagrantc: sure
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| 07:15 | I'm currently adding support for the generic rootpath naming, like: root=nbd:server:export
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| 07:15 | So that it's possible to specify nbd/nfs/iscsi/aoe from dhcp rootpath, without bothering about the cmdline
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| 07:16 | What does he want to know, how can I help?
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| 07:16 | <vagrantc> just curious, i guess
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| 07:16 | <alkisg> So he's wondering about usage statistics, or about technical needs?
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| 07:16 | <vagrantc> "oh look, vagrant's around, the LTSP guy, and i'm the NBD guy!" :)
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| 07:16 | <alkisg> Via mail? Or irc?
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| 07:17 | Hehe
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| 07:17 | So, the new pxelinux.cfg will now be boot.ipxe, with just this cmdline: kernel ltsp/${img}/vmlinuz root=nbd:${srv}:/opt/ltsp/${img}
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| 07:17 | And it can be replaced with root=dhcp
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| 07:17 | if one puts root in ROOTPATH
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| 07:18 | This works out of the box in dracut, so I'm adding a wrapper in initramfs-tools, to be able to use the same cmdline in all distros
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| 07:19 | <alkisg> I was also able to create a new ltsp-export-image, that can automatically find the newest kernel in all distros/VMs/isos, using qemu-nbd and heuristics,
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| 07:20 | and, the client can boot either from /dev/nbd0 or even /dev/nbd0p1, if one exports the whole disk and not just the partition
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| 07:20 | <vagrantc> somany clever ideas :)
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| 07:20 | <alkisg> So currently I'm playing with booting VMs and .isos that DONT have ltsp installed, using nfs, nbd, aoe etc
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| 07:21 | I.e. ltsp-client now is just a separate initrd.img, passed via ipxe or any other loader
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| 07:21 | (overlayed to the main one)
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| 07:28 | <vagrantc> yeah, you can typically just append another cpio.gz archive to the end of the initrd with whatever you want ... maybe even multiple cpio archives.
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| 07:31 | <alkisg> And thus be able to install initramfs-tools or dracut hooks even to .iso-based images :)
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| 07:36 | gintonyc has joined IRC (gintonyc!d433a2a5@gateway/web/freenode/ip.212.51.162.165) | |
| 07:37 | <gintonyc> hi, i have a problem on a new server, fresh install of Xubuntu 18.04 and ltsp
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| 07:38 | when i launch the thin client, i have "Failed to start network time synchronization"
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| 07:38 | <alkisg> Did you use the greek school ppa?
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| 07:38 | <gintonyc> the service is running on the server
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| 07:38 | no, i used the sources of Ubuntu
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| 07:39 | <alkisg> They're broken
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| 07:39 | !install
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| 07:39 | <ltsp> install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
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| 07:39 | <gintonyc> oh nice, thanks, i will try it
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| 07:47 | if i don't use the "epoptes", i have to add the ppa in the chroot client or not ?
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| 07:47 | <alkisg> Yes
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| 07:47 | <gintonyc> ok thx
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| 07:47 | <alkisg> Otherwise the client won't boot
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| 07:47 | <gintonyc> ok
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| 07:48 | <alkisg> Epoptes is very nice for troubleshooting client issues
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| 07:48 | Do install it :)
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| 07:48 | You can remove it later if you don't want it, just an apt purge
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| 07:49 | <gintonyc> it's not just monitoring client ?
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| 07:51 | <gintonyc> it's still ok to use tftpd-hpa/isc-dhcp-server ? The dhcp server is used for all the network and not juste the ltsp part.
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| 07:54 | <Hyperbyte> gintonyc, you can use whatever dhcp server you want.
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| 07:54 | <gintonyc> ok thanks
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| 07:55 | <Hyperbyte> Just set the correct dhcp options.
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| 07:55 | <gintonyc> the old server is working, i hope the confguration is the same :D
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| 08:11 | <gintonyc> i copied and past this line : "ltsp-build-client --purge-chroot --mount-package-cache --extra-mirror 'http://ppa.launchpad.net/ts.sch.gr/ppa/ubuntu bionic main' \ --apt-keys '/etc/apt/trusted.gpg.d/ts_sch_gr_ubuntu_ppa.gpg' --late-packages epoptes-client"
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| 08:11 | Error of GPG / NO_PUBKEY
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| 08:14 | <alkisg> gintonyc: I assume that you didn't do the previous commands, so you don't have the apt key in the server?
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| 08:14 | add-apt-repository --yes ppa:ts.sch.gr ==> gives you the key
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| 08:14 | ls -l /etc/apt/trusted.gpg.d/ts_sch_gr_ubuntu_ppa.gpg ==> checks if you have it
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| 08:15 | <gintonyc> yes i did it and i see the gpg file in /etc/apt/trusted.gpg.d
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| 08:15 | yes i have it
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| 08:16 | <alkisg> gintonyc: so you're saying that ltsp-build-client stopped with an error?
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| 08:16 | Or is this just a warning?
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| 08:16 | <gintonyc> stopped with an error, i try again
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| 08:16 | <alkisg> Please put the whole output to pastebin then
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| 08:16 | !paste
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| 08:16 | <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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| 08:17 | <gintonyc> maybe its the reason, i add "--arch i386" in the command
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| 08:17 | <alkisg> No, it shouldn't matter
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| 08:20 | <gintonyc> http://paste.debian.net/1067548
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| 08:21 | no in the paste.debian but i did "apt install --yes --install-recommends ltsp-server-standalone epoptes" AND "gpasswd -a ${SUDO_USER:-$USER} epoptes". It was the retry on the past
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| 08:36 | <alkisg> gintonyc: can I check the result with vnc?
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| 08:36 | !vnc-dide
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| 08:36 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 08:38 | <gintonyc> ok
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| 08:53 | <alkisg> gintonyc: the problem was the backslash
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| 08:53 | \ --apt-keys
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| 08:53 | This made the parameter " --apt-keys", with a space, so it was ignored
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| 08:54 | <gintonyc> ok, but why the backslash is in the command ?
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| 08:54 | on the website i mean
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| 08:55 | <alkisg> It is on a separate line
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| 08:55 | And there it means \<enter>
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| 08:55 | So, "continue to the next line"
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| 08:55 | But you put it on the same line, and it meant something else
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| 08:55 | <gintonyc> oh ok.... really sorry to waste your time
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| 08:56 | thanks a lot
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| 08:56 | <alkisg> You're welcome
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| 08:56 | <alkisg> Btw, if you copy paste the command, it puts 3-4 spaces, like "\ "
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| 08:56 | And that doesn't have any issue
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| 08:57 | Somehow you deleted the extra spaces , and it caused the problem
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| 08:57 | <gintonyc> oh i understand... i remember when i deleted the extra spaces -_-
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| 08:57 | <alkisg> :D
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| 08:58 | <gintonyc> it's nice, i learn about ltsp and linux command :D
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| 13:01 | <gintonyc> alkisg, i don't if you remember, i came a month ago. I had a problem with my printers in localapps (16.04). Before reinstall a new server, i have migrate the 16.04 to 18.04 and after, i used your PPA. Now, in my thin client, if i use directly LibreOffice, i have the printers but still no printers in localapps
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| 13:02 | I installed "cups" in the chroot client and see this howto of Ubuntu : https://help.ubuntu.com/community/UbuntuLTSP/LocalAppsLucidPrinting
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| 13:02 | If forgot something ?
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| 13:02 | (I not If)
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| 14:32 | <alkisg> Hyperbyte: so if ltsp properly supported fedora/centos etc, would you switch back from ubuntu?
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| 15:10 | gintonyc: where are the printers, on the server or on the client itself, or on another client?
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| 15:13 | <gintonyc> on the server
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| 15:14 | with "system-config-printer" on thin client, i see them
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| 15:14 | its with localapps the problem
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| 15:17 | i thinl i will remove localapps for libreoffice
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| 15:21 | <alkisg> Did you enable printer sharing on the server?
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| 15:21 | !print
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| 15:21 | <ltsp> I do not know about 'print', but I do know about these similar topics: 'fatclient-printers', 'printer'
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| 15:21 | <alkisg> !fatclient-printers
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| 15:21 | <ltsp> fatclient-printers: You can publish printers on your network so that fat clients see them, by launching "system-config-printer" and selecting Server → Settings → Publish shared printers connected to this system
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| 15:21 | <alkisg> Btw, if you type "alkisg", I get sound and understand that someone is talking to me...
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| 15:48 | <gintonyc> alkisg yeah the sharing is enable, i had follow the howto
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| 15:49 | <alkisg> gintonyc: what's the output of this command on the server? cupsctl | grep share
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| 15:50 | <gintonyc> _share_printers=1
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| 15:51 | <alkisg> !localxterm
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| 15:51 | <ltsp> localxterm: Any applications that you launch on a thin client actually runs on the server, not on the client itself. If you want to open a program on the client locally, you can type 'ltsp-localapps <program>' in a run dialog or in a terminal. For example, 'ltsp-localapps xterm' to open a terminal running on the client.
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| 15:51 | <alkisg> So, on a localxterm, type this: cat /run/ltsp/ltsp* | nc termbin.com 9999
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| 15:52 | What's the resulting URL?
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| 15:54 | <gintonyc> no result, stuck in prompt
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| 15:55 | <alkisg> OK run just this and copy/paste here: cat /run/ltsp/ltsp*
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| 15:56 | You probably haven't configured client internet correctly yet
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| 15:58 | <gintonyc> Internet works on thin client, i have to check the firewall
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| 15:59 | <alkisg> It works on the server, i.e. in the thin client session
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| 15:59 | Not on the thin client, i.e. in localapps
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| 15:59 | I assume you are using a 2-NIC setup and you haven't done NAT on the server?
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| 16:01 | <gintonyc> Yes, only one network card and no nat
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| 16:02 | <alkisg> I see. OK anyway just copy/paste the output via epoptes or something
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| 16:03 | <gintonyc> http://paste.debian.net/1067622
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| 16:04 | Firefox works with localapps and it's works, i don't understand why it's not the same for xterm
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| 16:09 | <alkisg> SERVER=192.168.35.202 SERVER="192.168.35.202"
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| 16:09 | It really has 2 SERVER lines there?
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| 16:10 | OK maybe they're from another file, anyway
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| 16:10 | Do you have control of the client via epoptes?
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| 16:10 | <gintonyc> yes
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| 16:10 | <alkisg> OK let's do this quickly with vnc then
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| 16:10 | !vnc-dide
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| 16:10 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 16:10 | <gintonyc> and yes 2 "SERVER" but weird, only one in lts.conf
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| 16:10 | <alkisg> From the server
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| 16:11 | <gintonyc> ok done
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| 16:19 | <alkisg> gintonyc: seems like a firewall issue
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| 16:19 | Disable it, try again
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| 16:20 | <gintonyc> it's disable for the server, i will do it for the thin, u have the address ip of it ?
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| 16:20 | 35.10 no ?
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| 16:20 | <alkisg> I disconnected, but you can see it with epoptes right click > information
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| 16:20 | <gintonyc> ok thx
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| 16:21 | ok i did it
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| 16:23 | nothing block in the logs of the firewall
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| 16:24 | <alkisg> cupsctl on the client says "forbidden" though :)
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| 16:24 | So something does forbit it :D
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| 16:24 | <gintonyc> :D
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| 16:24 | <alkisg> Sorry, no time to look more into that, it looks like a problem specific just to your setup
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| 16:24 | <gintonyc> ok thanks a lot !
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| 16:24 | ;)
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| 16:24 | <alkisg> np
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| 16:26 | vagrantc: aaand dracut finally starts supporting overlayfs: https://github.com/dracutdevs/dracut/pull/447
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| 16:44 | <vagrantc> alkisg: heh
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| 16:45 | <alkisg> I think I'll use dracut syntax for everyone, it doesn't work now but it will in the future. In the mean time, inline patches :D
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| 16:53 | <josefig> hello, again my ltsp clients have no internet, my server was shutdown because some upgrade of memory and after that we have no internet. I have fat clients ubuntu 18.04, I followed again the guide from alkisg but nothing changed :(
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| 16:54 | I have 2 NICs and i was using dnsmasq as usual
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| 16:54 | * alkisg needs a break for now, more troubleshooting will need to wait for another day :) | |
| 17:07 | <josefig> :(
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| 17:33 | i fixed, thanks :)
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| 17:33 | * josefig is getting good experience with ltsp =) | |
| 17:33 | <vagrantc> join the elite developer team! :)
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| 17:35 | <josefig> I'm a developer btw :P
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