IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 3 July 2019 (all times are UTC)
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| 08:00 | <kaktux> hi there, i am totally new to ltsp and read all i could find for installing a ltsp-server fat-client on Ubuntu - which is what i plan to achieve (create a Lubuntu 19.04 LTSP-Server for fat-clients) for the small company i work for. But all the (mostly outdated by 5+ years) infos i could find left me with some general questions.
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| 08:01 | <alkisg> !install
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| 08:01 | <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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| 08:01 | <alkisg> kaktux: follow this ^ one EXACTLY and you should be ready in 30 mins :)
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| 08:04 | <kaktux> ok - i have these on my list already and read them (but not tried out till now). But i would like to ask the general questions as some tutorials on the net told to do some things before installing ltsp-packages. Which made me asked: why? Doesnt it work after? So the things i asked myself are about the functions of ltsp in general.
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| 08:04 | 1. Possible to add programs after installation?2. Possible to add programs not included in the disstributions repository (like java programs)?3. Possible to add decives after installation (Printer, Card-Reader)?4. Possible to add users after installation?5. Possible to add bookmarks for all users in a file explorer (Dolphin, Nautilus...)?6. Possibl
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| 08:04 | e to add network connections (VPN) for all?7. Possible to add bookmarks/browser addons in Firefox for all?
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| 08:04 | <alkisg> 1) Yes 2) Yes 3) Yes 4) Yes 5) Yes 6) Yes 7) Yes
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| 08:05 | Note that "adding bookmarks for all users" etc is not related to ltsp. You can do it by following the mozilla documentation.
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| 08:05 | "doing things for all users" is the same if you just have a home pc with 3 accounts for your kids; again, you follow the mozilla documentation there and it works
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| 08:07 | <kaktux> ok thx ;) thats what i was hoping for. I will just give a virtual machine installation a try and see what happens. Thx for your input. And another short one: i read a lot about "failed" lubuntu ltsp attempts. As most successfull users dont ask questions in forums: do you know about anyone using current lubuntu with ltsp?
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| 08:07 | <alkisg> I think I heard a couple of people using it, yes. I don't know of any known issues with lubuntu.
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| 08:07 | More people use mate, as it's just as light and more full-featured, but lubuntu should also work fine
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| 08:07 | Ah
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| 08:08 | Also, DONT use 19.04
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| 08:08 | Use 18.04
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| 08:08 | Non LTS Ubuntu releases aren't tested at all by ltsp developers
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| 08:08 | <kaktux> ok thx a lot. I wanted to use lubuntu current one - as the lts (18.04) uses a different desktop environment. They switched to lxqt starting 18.10 - thats why
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| 08:09 | in the long run i plan to use lts version
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| 08:09 | <alkisg> OK that makes sense
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| 08:09 | Although 19.04 doesn't work for i386 clients
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| 08:10 | <kaktux> anyway - i will just try out via virtual machine and go from there. Thx for all your input
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| 08:10 | <alkisg> Also note that I'm currently rewritting ltsp from scratch,
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| 08:10 | so the new version that will be released in september will be completely different to the current one
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| 08:11 | <kaktux> "will be released in september" doesnt sound like open source development to me ;) - im more used to "done when its done" - without sure dates
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| 08:11 | <alkisg> Haha
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| 08:11 | Some times dates are used; e.g. in Ubuntu releases or GSoC projects ;)
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| 08:12 | <kaktux> your right about that. Will the new version be included in upcoming ubuntu releases?
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| 08:12 | if so i will make a "test phase" for the 3 months
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| 08:12 | <alkisg> I'm not sure if I'll release it for 20.04 or 20.10, but it will surely be there from 20.10 and on
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| 08:13 | <kaktux> ok. sounds good
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| 08:13 | <alkisg> If people ask for the old ltsp to be around for 20.04, we might keep it to make migration easier for them
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| 08:15 | <kaktux> before migration i will try installation ;) thx for all you help. I will tryout a vm-installation (in general thats the plan: running it on a nas (qnap virtualization station)).
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| 08:16 | <alkisg> Sure; remember to use a bridged adapter
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| 08:16 | <kaktux> yeah - i know that problem already from other virtual machines i transfered from my local virtual box to the nas ;) thx a lot - you cleared my doubts about ltsp. have a nice day
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| 08:17 | <alkisg> You too
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| 08:26 | <kaktu> hi there (once again) - the usual happend: as i closed the window another question entered my mind. As you mentioned the new release. On the ltsp wiki it says: "The Greek schools PPA is maintained by LTSP developers and offers new LTSP releases that are a lot more stable than those in the Ubuntu repositories. To add it to your sources [...]. Is thi
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| 08:26 | s still accurate? Meaning - if so - this may or may not have the new september version available before it is added as official ubuntu package. So this may be the fastest way to try it out once available.
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| 08:33 | <alkisg> kaktu: I maintain the greek schools ppa; but I never upload ltsp for non-lts ubuntu releases there, so don't add it to your sources,
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| 08:34 | wrt ltsp5 (the current) vs ltsp19 (the next one), I'm thinking if I should have ltsp5 in ubuntu 20.04, and ltsp19 in the ppa, and then ltsp19 in ubuntu 20.10
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| 08:34 | (or... ltsp19 in ubuntu 20.04 directly)
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| 08:35 | <kaktu> ok thx. good to know. btw. the ltsp wiki is quite spammed ;) - searching for fat client gives me some result about fat loss - not a big problem - but just in case you didnt know. Now i wont bother you from you work anymore. All is answered. Thx again
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| 08:36 | <alkisg> kaktu: yeah ltsp.org is unmaintained, fortunately the domain owners agreed to move it to github.com/ltsp when I get that ready
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| 08:37 | <kaktu> dont worry about it - the main info is still easily accesible for a human who can think. So no pressure. Have a nice day
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| 08:37 | <alkisg> You too again :)
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| 09:13 | <pavars> Hi, I'm new here and recently set up LTSP with ubuntu-mate
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| 09:14 | I wanted to ask if anyone has some info on how to customize the mate GUI for users system-wide, so I don't have to do it per user basis
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| 09:15 | like changing background, menu icon, menu theme etc. I did adjust /etc/skel but that only works for desktop iicons
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| 09:15 | like changing background, menu icon, menu theme etc. I did adjust /etc/skel but that only works for desktop icons
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| 09:15 | clients are running as thinclients
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| 09:17 | any advice would be greatly appreciated :)
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| 09:29 | <alkisg> pavars: this question isn't related to ltsp; you can ask in #mate; that said, here's the answer: https://wiki.gnome.org/Projects/dconf/SystemAdministrators
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| 09:43 | <pavars> thanks, figured it out on my own... the .files weren't properly copied to /etc/skel
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| 10:00 | <alkisg> /etc/skel is the wrong way to do it; but ok whatever works for you
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| 10:01 | It'll only affect new users, and it can't support different /home/username paths per user
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| 11:37 | <pavars> Ok thanks, I'll have a look at it. We have user management via LDAP so there won't be different /home/username paths per user. And currently I only need it to be created when a new user logs in
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| 13:26 | <jvss> Hello, someone already used LTSP with Odroids as clients?
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| 13:26 | I need help
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| 13:34 | <mwalters> I haven't heard of anyone using odroids, but I think there are a few raspi users (or used to be)
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| 13:34 | !ask
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| 13:34 | <ltsp`> ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
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| 13:37 | <alkisg> jvss: I think vagrantc has used odroids some time in the past, why?
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| 13:50 | <jvss> Because i m trying to use Odroids XU4 as clients, but I m with troubles to network boot
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| 13:57 | <mnevans> Hello LTSP World. I am running a Debian 9.9 system. Yesterday updated it, and apparently with kernel 4.9.0-9-amd64, keyboard and mouse do not work under ltsp.
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| 13:58 | Booting with kernel 4.9.0-8-amd64 fixes that, but I think I need to make ltsp installation boot that kernel as well.
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| 13:59 | It currently tries to boot 4.9.0-9 and that doesn't work b/c it seems ltsp kernel and system kernel must match.
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| 14:00 | I tried to set update-kernels.conf in /opt/ltsp/amd64/etc/ltsp to show menu so I could choose the correct kernel
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| 14:00 | but this doesn't seem to work.
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| 14:00 | Suggestions? Thanks in advance.
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| 14:01 | I am pretty sure I am using nbd, but am not entirely certain!
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| 14:01 | Such is the case with ltsp - it works so well 99.9% of the time, I forget how to debug things...
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| 14:05 | <mnevans> Is there any more documentation besides https://wiki.debian.org/LTSP/Howto or http://wiki.ltsp.org/wiki/LTSPedia I should check?
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| 14:14 | <mwalters> `ltsp-update-kernels` should update the kernels in tftproot
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| 14:14 | and the pxelinux conf
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| 14:14 | oh, you want to roll back
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| 14:15 | not sure about debian, but pxelinux stuff is found in /var/lib/tftpboot/ltsp on ubuntu
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| 14:17 | <alkisg> mnevans: this sounds like you are booting a kernel that is not available in the chroot
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| 14:17 | What's is the output of these commands on the client? uname -a; ls /lib/modules
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| 14:19 | <mnevans> Thanks, Yes. I can't boot the client, but server is running kernel 4.9.0-8-amd64. Client, I think, is trying to boot 4.9.0-9-amd64 which is the latest. I haven't succeeded in getting a client menu to be able to choose 4.9.0-8.
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| 14:21 | I also might have fungooled things trying booting with ntfs... trying to fix that now.
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| 14:22 | <alkisg> I thought the client did boot but without mouse/keyb
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| 14:23 | <mnevans> That was then, this is now...
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| 14:23 | <alkisg> :)
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| 14:23 | <mnevans> :|
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| 14:23 | <alkisg> Also note that some times people end up with multiple tftp dirs
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| 14:23 | <mnevans> Now I get from the client only : "a bootable device has not been detected.'
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| 14:24 | <alkisg> And they try modifying one of them, while the real one is the other one
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| 14:24 | <mnevans> I think it is trying to use ntfs now, not sure why. I did run ltsp-update-image and this behavior appeared afterward.
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| 14:25 | <alkisg> nfs or nbd is a lot later than "bootable device not detected"
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| 14:25 | Up until the kernel/initrd is loaded, it's always tftp
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| 14:25 | <mnevans> I have some copies of tftp directories, but they were copies from a previous troubleshooting for which I can't recall or find docs for problem or solution (my bad).
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| 14:26 | <alkisg> If you have a vbox client, I could have a quick look over vnc
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| 14:26 | <mnevans> ltsp-update-kernels is updating all of them.
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| 14:27 | Ihave used vbox in the past, but it has been reaaaaalllly slllloooooowwwww for even simple things.
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| 14:28 | <alkisg> This isn't normal, maybe you didn't enable vt-d in the bios settings
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| 14:28 | <mnevans> on the server? Possibly, I would have to check. Old server with lots of computning nodes, but low power/slow on each.
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| 14:29 | <alkisg> Yeah, it's handy to be able to detect client problems with vnc
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| 14:29 | E.g. schools say "clients don't boot", I use a vbox fat client to test, and solve the issue
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| 14:30 | <mnevans> How would I be sure that I am running with nbd and having set up (mistakenly) to boot with ntfs? Another client is saying 'nfs over tcp not available and then dropping to a busybox prompt. Can we work with that?
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| 14:31 | <alkisg> cat /proc/cmdline on busybox
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| 14:31 | If you see nbd, it's nbd, etc etc
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| 14:32 | <mnevans> Thanks, yes, its set to nfs. So how can I set it to boot using nbd, and then how to get the menu on the client to come up so I could choose the right kernel?
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| 14:33 | In /opt/ltsp/amd64/etc/ltsp/update-kernels.conf?
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| 14:34 | <alkisg> Eeeh that requires writing around 15 lines, search for it, I answered it a few times both in irclogs.ltsp.organd the mailing list
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| 14:34 | <alkisg> !ltsp-discuss
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| 14:34 | <ltsp`> ltsp-discuss: at https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
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| 14:34 | <mnevans> I have tried setting PXELINUX_DEFAULT=menu, then running ltspo-update-kernels, then rebooting client, no luck.
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| 14:40 | <mnevans> Ah, sorry - thanks - will look there. keywords to search = nbd and boot and ?
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| 14:47 | <mnevans> https://sourceforge.net/p/ltsp/mailman/message/36669125/
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| 14:47 | ?
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| 14:59 | <mnevans> Alkisg, Following these instructions seemed to help me boot one thin client:
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| 14:59 | https://sourceforge.net/p/ltsp/mailman/message/36669125/
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| 15:00 | Still can't boot another. But a client that was not rebooted since before the server upgrade is still running(!) That might help me figure things out.
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| 15:00 | <alkisg> mnevans: heh, just one?
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| 15:01 | !vnc-dide
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| 15:01 | <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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| 15:01 | <alkisg> Anyway, try this, I have a few minutes free just onw
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| 15:01 | <mnevans> Ha ha. Just one. But the client that came up now with nfs boot is not accepting my password(!)
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| 15:02 | Alkis, this is on the server, correct?
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| 15:02 | or client?
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| 15:02 | <alkisg> Right, and it requires running xorg
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| 15:02 | Server
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| 15:06 | <alkisg> mnevans: so, you're using /srv/tftp
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| 15:06 | <mnevans> OK
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| 15:06 | Is that good or bad?
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| 15:06 | :)
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| 15:06 | <alkisg> You should delete /var/lib/tftpboot/ltsp, after getting backups of lts.conf etc, so that you don't get confused
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| 15:06 | It's not a problem as long as you know it :)
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| 15:07 | <mnevans> There is lts.conf
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| 15:07 | Can I point it out?
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| 15:16 | <alkisg> "bootable device has not been detected on my desktop client..." ==> I didn't see an IP request there
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| 15:17 | Now I do see 2 ips, and tftp requests
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| 15:17 | This is now using the default nbd setup
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| 15:18 | <mnevans> That's two other thin clients I think.
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| 15:18 | I see boot menu; choose boot using ntfs?
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| 15:18 | <alkisg> No
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| 15:18 | The default, nbd
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| 15:18 | <mnevans> OK. I am really confused now.
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| 15:18 | :)
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| 15:18 | <alkisg> You didn't set up nfs like I write in the mailing list
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| 15:18 | You tried to use the broken nfs of debian
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| 15:19 | I was advising "single file over nfs"; you tried to use "chroot over nfs"
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| 15:19 | Let's not make things complex; you were using nbd; continue to use it
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| 15:19 | <mnevans> OK. Sorry I misundersl epoptes
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| 15:20 | <alkisg> Did the clients boot? Can't see, you don't have epoptes
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| 15:21 | <mnevans> No - message is 'gave up waiting for root file device'
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| 15:21 | Can install epoptes...
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| 15:22 | other client also didn't boot - 'bootable device has not been detected'.
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| 15:22 | Might be something with the client bios.
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| 15:22 | <alkisg> Yeah ignore those they're in the wrong subnet or have wrong bios settings
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| 15:22 | They don't ask for an ip
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| 15:22 | What's the output of `cat /proc/cmdline` on the other ones, that give up on root device?
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| 15:24 | <mnevans> root=/dev//dnev/nbdbd000
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| 15:24 | * vagrantc blinks | |
| 15:24 | <alkisg> what, that's all?
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| 15:24 | Heya vagrantc
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| 15:24 | <mnevans> No, hang on, I'll write it down and transcribe....
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| 15:24 | <alkisg> I see your pings hours after you're gone! Can't seem to catch up with you lately :)
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| 15:25 | mnevans: you do have virtualization enabled in your processors, so virtualbox should run fine
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| 15:25 | <vagrantc> alkisg: clearly it's not me catching up with *you* :)
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| 15:25 | * vagrantc hasn't done any ltsp stuff worth catching up with :) | |
| 15:26 | <mnevans> re: virtualization, yes, then it must be slow processors
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| 15:26 | here is /cat/proc/cmdline output
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| 15:27 | <alkisg> I relaxed a bit last week so I didn't do much. Separated the code into ltsp/{server, client, common}, and now I'll make it possible so that ltsp-client is, or is not, installed in the client image; the benefit when it is, is that it saves ram, as rsync/cp will see that the client code is already there
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| 15:28 | <mnevans> BOOT_IMAGE=vmlinuz-4.9.0-9-amd64 ro initrd=initrd.img-4.9.0-9-amd64 init=/sbin/init-ltsp quiet root=/dev/nbd0 BOOTIF=01-00-01-2e-40-8b-**
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| 15:28 | kernel is wrong. Server is running 4.9.0-8-amd64
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| 15:28 | <alkisg> mnevans: it's fine; it's what the chroot has
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| 15:28 | <mnevans> ?
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| 15:28 | <alkisg> You're using chroots, so the server kernel doesn't matter at all
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| 15:28 | Your client kernel is at /opt/ltsp/amd64/boot
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| 15:29 | Not at /boot
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| 15:29 | !nbd-client
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| 15:29 | <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
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| 15:29 | <alkisg> Try this command , using the correct ip there, and amd64
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| 15:29 | <mnevans> Ah, I thought what was preventing client coming up was different kernel: server and client.
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| 15:29 | <alkisg> No, you can have 3.x kernel on the server and 5.x on the client, no problems there
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| 15:33 | <mnevans> So mouting the NBD image from the client initramfs: no response to command, like it is waiting on connecting.
| |
| 15:33 | <alkisg> And did you use the correct ip?
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| 15:34 | Do you have firewall or something?
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| 15:34 | <mnevans> yes. ifconfig to confirm. No firewall between server and client.
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| 15:39 | <alkisg> mnevans: I'm not looking at vnc, if you wrote something, I lost it
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| 15:40 | nbd-server.allow does not exist by default
| |
| 15:40 | <mnevans> Ah - I had created nbd-server.allow because one of the errors I got on trying to boot a client was that this config file was missing
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| 15:40 | Should I delete it?
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| 15:41 | <alkisg> !nbd-client
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| 15:41 | <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
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| 15:41 | <alkisg> mnevans: try again this on the client
| |
| 15:42 | <mnevans> OK
| |
| 15:43 | Same result - on its way to timeout I think.
| |
| 15:43 | reboot it and try again?
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| 15:44 | previo the error was : socket failed
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| 15:45 | <alkisg> The message about nbd.allow is fine, it's just a warning
| |
| 15:45 | The problem is that the client doesn't ask for an nbd connection at all
| |
| 15:45 | Try rebooting the client, as you might be typing the command wrong
| |
| 15:45 | If it still fails, we'll see
| |
| 15:46 | <mnevans> ok rebooting
| |
| 15:48 | At menu, selected LTSP, using NBD
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| 15:48 | some boot messages, then blank screen
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| 15:48 | should be client *.40
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| 15:49 | <alkisg> I think this got past the nbd issue
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| 15:49 | It says "starting to serve"
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| 15:49 | Black screen seems unrelated
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| 15:50 | Btw I see a lot of ata errors, check your disk
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| 15:50 | <mnevans> Yeah, that is worrisome! and new. Not found when rebooting server and disk check last night.
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| 15:52 | <mnevans> Is client booting kernel 4.9.0-9 or *-8?
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| 15:52 | *-9 gave keyboard/mouse unresponsive problem
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| 15:52 | <alkisg> That would be because it was missing from the chroot
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| 15:52 | It shouldn't be an issue now
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| 15:52 | Try other options from the menu if you want, previous kernels etc
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| 15:53 | <mnevans> No response from client *40. Blank screen only.
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| 15:54 | can't boot client *.45
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| 15:54 | I will try the previous kernel!
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| 15:56 | <mnevans> OK - client *40 came up with login. But returns to login on entering correct password. That problem looks familiar - but I don''t remember how to solve it.
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| 15:58 | syslog says password ok, then started session, then 3 errors:
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| 15:59 | udev-acl.ck[28819]: g_slice_set_config: assertion 'sys_page_size == 0' failed
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| 15:59 | console-kit-daemon[2134]: missing action
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| 15:59 | then
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| 15:59 | Received disconnect from 192.168.0.40 port 55852:11: disconnected by user
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| 15:59 | then
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| 15:59 | Disconnected from 192.168.0.40 port 55852'
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| 16:00 | pam_unix(sshd:session): session closed for user mnevans
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| 16:08 | Looks like I need to run ltsp-update-sshkeys, then ltsp-update-kernels?
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| 16:09 | Alkis, is that going to break anything we just did?
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| 16:09 | <alkisg> (06:58:45 PM) mnevans: syslog says password ok, then started session, then 3 errors: ==> this means no ssh keys needed
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| 16:13 | <mnevans> I think it is using default authentication - what is this? If not an ssh problem, any idea what could be happening here?
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| 16:13 | <alkisg> try the failsafe xterm session
| |
| 16:14 | Also, your disk might be broken
| |
| 16:17 | <mnevans> I get a spinning wheel cursor; and a login prompt but can't type anything there on the client.
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| 16:18 | <alkisg> You need to move the mouse over the xterm to type
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| 16:18 | To the top left of the screen
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| 16:18 | If xterm works and normal session doesn't, it's not an authentication issue, it's xorg or broken disk or compositing etc
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| 16:19 | <mnevans> Sorry - yep - that works.
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| 16:20 | So I can safely ltsp-update-kernels if need be?
| |
| 16:20 | I think I should diagnose these disk errors!
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| 16:20 | Thank you for your help!
| |
| 16:21 | Is there some way I can make a donation to the ltsp effort, to say thank you?
| |
| 16:22 | what did you mean by " or compositing etc?"
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| 16:23 | <mwalters> "stuff that renders the desktop"
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| 16:26 | <mnevans> Ah, thank you!
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| 16:28 | <alkisg> mnevans: there's no entity behind ltsp that can accept donations etc; you may pay individual developers if they help you and if you want to, but there's no obligation...
| |
| 16:28 | Personally I give free help here when I have the time for it, and I'm also available for hire, for more time-consuming issues
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| 16:29 | <mnevans> So I could send you monetary donation by paypal?
| |
| 16:29 | Or offer testing help for the upcoming release?
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| 16:29 | <alkisg> Sure, if you want to; but I usually prefer to charge 30€ per hour for tasks that I do for the person that needs help
| |
| 16:30 | This way both are benefited
| |
| 16:30 | Re: testing, sure, that's welcome, but I'll deploy it to many schools in September, so that it'll be more tested when other end-users get it
| |
| 16:31 | If you need help with logging in, I'd need either epoptes or virtualbox, in order to help efficiently
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| 16:36 | <mnevans> OK. Would like to send you 30 euros for the help today.
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| 16:36 | <alkisg> Thank you; it's alkisg at gmail dot com
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| 16:36 | * alkisg waves; jogging time; bb in a couple of hours | |
| 16:37 | <mnevans> Have just installed epoptes but was not able to run epoptes-client -c : there is nothing in /etc/epoptes/server.crt, failed to fetch certificate from server:789
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| 18:05 | <alkisg> mnevans: back, if you watch irclogs :)
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| 18:08 | Julien has joined IRC (Julien!8d8ab4a2@141.138.180.162) | |
| 18:08 | <Julien> Hello Everyone, I'm in an urgent need of help
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| 18:08 | Julien is now known as Guest92384 | |
| 18:08 | <alkisg> Guest92384: specifically?
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| 18:09 | <Guest92384> I've been running ltsp server for quite some time now and I just ran an apt-get update then upgrade on the ltsp server (chrootless config)
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| 18:09 | after that, the clients froze and I'm unable to start them now
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| 18:09 | <alkisg> What's the output of this command? sudo ltsp-info | nc termbin.com 9999
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| 18:10 | <Guest92384> on the server ?
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| 18:10 | <alkisg> Yes
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| 18:10 | And also, what is the error message when the clients won't start?
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| 18:10 | <Guest92384> No LSB modules are available.https://termbin.com/14fu
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| 18:10 | On the client it outputs:
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| 18:10 | Error: Socket failed: Connection timed out
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| 18:10 | <alkisg> sounds like nbd issues
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| 18:11 | <Guest92384> yes indeed
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| 18:11 | after a long time it fails to Busybox
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| 18:11 | and I try to issue nbd-client commands
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| 18:11 | but they timeout
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| 18:11 | like nbd-client x.x.x.x -l won't work
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| 18:11 | whereas on the server it returns
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| 18:11 | E: listing not allowed by server.
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| 18:13 | mnevans has joined IRC (mnevans!8008b09d@zero.geol.umd.edu) | |
| 18:15 | <Guest92384> I double checked the ndb-server configuration
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| 18:15 | and it seems all good
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| 18:16 | so I'm not sure if the issue is from nbd itself or if it's a network issue
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| 18:18 | <mnevans> Hello Alkis - just wanted to report that I rebooted my server and performed a disk check on all disks - somehow came back clean. Then rebooted a client - OK and can login. In fact all clients seem to be back.
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| 18:18 | No idea exactly why.
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| 18:18 | :)
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| 18:22 | <Guest92384> alkisg is there an easy way in busybox mode to check network configs ?
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| 18:23 | asking because I also see the following error (but not sure it is related)
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| 18:23 | no search or nameservers found in /run/net-eno1.conf ...
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| 18:24 | when I cat /run/net-eno1.conf on the client I see the following values
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| 18:24 | device='eno1'
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| 18:25 | IPV4ADDR='10.0.1.57' which is correct
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| 18:25 | IPV4NETMASK='255.255.255.0'
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| 18:25 | IPV4GATEWAY='10.0.1.1' which is correct
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| 18:25 | ROOTSERVER='10.0.1.31' which is the IP of the ltsp server
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| 18:26 | ROOTPATH='/opt/ltsp/amd64' which is the name of the ndb-server export
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| 18:26 | other values are here but empty
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| 18:28 | <alkisg> mnevans: great! maybe it was disk/fsck related
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| 18:29 | Guest92384: try this
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| 18:29 | !nbd-client
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| 18:29 | <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
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| 18:30 | <Guest92384> sure
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| 18:30 | <alkisg> mnevans: do you need help with epoptes setup? It should be rather easy...
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| 18:31 | <Guest92384> it seems not to be working, but my chrootless is an amd64 so is it normal to be using an i386 one ?
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| 18:31 | <alkisg> No, replace the ip and i386 in that command
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| 18:32 | <Guest92384> ohh for the IP you want me to use the IP of the ltsp server ?
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| 18:32 | <alkisg> yes
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| 18:32 | <Guest92384> I tried this already, it did not work either
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| 18:32 | <alkisg> What was the error message?
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| 18:32 | <Guest92384> Error: Socket failed: Connection timed out
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| 18:33 | <alkisg> And you did use the correct ip?
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| 18:33 | <Guest92384> yes
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| 18:33 | <alkisg> OK, can you vnc to me?
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| 18:33 | !vnc-dide
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| 18:33 | <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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| 18:33 | <Guest92384> this is the command I tried: nbd-client 10.0.1.31 -N /opt/ltsp/amd64 /dev/nbd0
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| 18:33 | <alkisg> From the client initramfs, right?
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| 18:33 | Sounds correct
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| 18:33 | <Guest92384> you want me to run this on the server or the client ?
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| 18:33 | <alkisg> On the server
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| 18:34 | <Guest92384> from the client initramfs yes
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| 18:34 | <alkisg> It'll share your server screen with me
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| 18:34 | Like quick teamviewer
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| 18:35 | <Guest92384> can't I give you access through Epoptes ?
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| 18:35 | <alkisg> !vnc-edide
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| 18:35 | <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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| 18:35 | <alkisg> Sure, it's the same
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| 18:40 | <alkisg> Guest92384: boot a client
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| 18:40 | <Guest92384> ok trying now
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| 18:41 | it seems to be doing the same
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| 18:41 | <alkisg> I don't see an nbd request though
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| 18:42 | <Guest92384> yes I did try this too and noticed the same
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| 18:42 | as if the networks configuration has been altered
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| 18:42 | <alkisg> OK we'll wait until it drops to initramfs
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| 18:42 | then you'll try again the nbd-client command
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| 18:42 | so that i see if it says version mismatch or anything
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| 18:42 | You don't have a firewall, do you?
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| 18:43 | <Guest92384> nop not in my local network
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| 18:43 | plus nothing I modified today
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| 18:44 | <alkisg> Did the client reach the initramfs prompt?
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| 18:44 | <Guest92384> it just did
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| 18:44 | I issued the nbd-client comment just now
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| 18:44 | <alkisg> can you ping 10.0.1.31?
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| 18:45 | <Guest92384> well I tried but it seems that the ping command is not available in the initramfs
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| 18:45 | <alkisg> Hm right
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| 18:45 | <Guest92384> though the initial image is being loaded through tftp
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| 18:45 | so network wise (mean hardware equipement and config) it is working
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| 18:45 | <alkisg> try:
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| 18:45 | wget 10.0.1.31:8000/lts.conf
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| 18:46 | Does that work, from the client?
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| 18:46 | <Guest92384> I will try as soon as the nbd-client command times out
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| 18:46 | <alkisg> Ouch :D
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| 18:46 | openvt bash -l => gives you vt2, for another time
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| 18:46 | <Guest92384> ok
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| 18:46 | tryed the wget
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| 18:47 | it is hanging on the Connecting to 10.0.1.31:8000 line
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| 18:47 | and nothing happens
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| 18:47 | so it seems like a network configuration on the ltsp client level ?
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| 18:47 | <alkisg> So the client networking seems broken, yes; or... firewall
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| 18:47 | If you get a shell, try `ip a`
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| 18:47 | See what ip/gateway it has etc
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| 18:48 | <Guest92384> the wget is not timing out :-(
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| 18:48 | <alkisg> reboot... and openvt
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| 18:48 | <Guest92384> ok
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| 18:52 | <alkisg> sudo ltsp-update-image -r / ==> reverts to the previous image, in a few secs
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| 18:53 | So that you verify it's image-related
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| 18:54 | <Guest92384> ok the reboot finished
| |
| 18:54 | so the ip a
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| 18:54 | gives me an inet value that looks legit
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| 18:54 | 10.0.1.57
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| 18:54 | do you want me to look at something else ?
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| 18:57 | I'm rebooting with the reverted image
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| 18:57 | but I don't think it's image related, as when the problem occured, one person tried to reboot multiple times before I created the new image and it wasn't working
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| 18:57 | trying though
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| 18:58 | same problem
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| 18:58 | if I revert again it will put back the new image ?
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| 19:01 | <alkisg> yes
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| 19:01 | <Guest92384> ok
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| 19:02 | I'm running out of ideas here...
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| 19:02 | wondering one thing though
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| 19:03 | Julien has joined IRC (Julien!8d8ab4a2@141.138.180.162) | |
| 19:03 | <Julien> if tftp worked to load the image, doesn't this mean that Network level things are OK ?
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| 19:03 | Julien is now known as Guest82753 | |
| 19:03 | Guest82753 is now known as ewJulien | |
| 19:10 | <alkisg> ewJulien: not necessarily; e.g. tftp might work at 100 mbps (bios) while later on kernel at gigabit, with broken cables
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| 19:10 | I would test with a virtualbox client next
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| 19:11 | <ewJulien> well what drives me crazy is that it was working well.. during the update of the server, stations froze and couldn't reboot
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| 19:11 | as if the nbd disk failed and is now unable to reconnect
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| 19:11 | <alkisg> and wget too? :)
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| 19:12 | nope, that doesn't sound right
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| 19:16 | <ewJulien> you suspect a network hardware failure or misconfiguration ?
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| 19:35 | <ewJulien> alkisg I got a connection issue apparently
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| 19:35 | well your suspicion made me think, I restarted one of the switches...
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| 19:35 | and it worked again!
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| 19:35 | <alkisg> :)
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| 19:35 | <ewJulien> Thank you a lot for your help
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| 19:36 | is there anything we shall undo before I disconect the remote assistance session ?
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| 19:36 | <alkisg> No I wasn't monitoring it :)
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| 19:36 | Just close it!
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| 19:36 | <ewJulien> ok
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| 19:36 | and for the terminal windows you opened ?
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| 19:41 | <alkisg> close all of them , sure
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