IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 23 September 2017 (all times are UTC)
| 00:01 | <alazyworkaholic> If I'm having NBD trouble, might 'ltsp-config -o nbd-server' help, after the image rebuilds?
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| 00:02 | <vagrantc> cat /etc/nbd-server/conf.d/ltsp*.conf
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| 00:04 | <alazyworkaholic> BTW, I'm using XFCE right now, but the ltsp-manager gui seems to be partially broken with Ubuntu unity. I filed a bug report. Even on this nearly fresh XFCE, editing the configuration files opens up libreoffice as the editor...
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| 00:05 | <vagrantc> xdg-open, while in theory the correct thing to use to open files ... has it's surprises.
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| 00:06 | <alazyworkaholic> /etc/nbd-server/conf.d/ltsp_amd64.conf:
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| 00:06 | [/opt/ltsp/amd64]
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| 00:06 | exportname = /opt/ltsp/images/amd64.img
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| 00:06 | readonly = true
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| 00:06 | authfile = /etc/ltsp/nbd-server.allow (this file does not exist)
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| 00:07 | <vagrantc> that sounds find
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| 00:07 | fine
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| 00:08 | alazyworkaholic: edit ltsp_amd64.conf and create a second entry with all the same lines, but [opt/ltsp/amd64] for the heading
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| 00:08 | then restart nbd-server ...
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| 00:08 | see if that helps
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| 00:10 | <alazyworkaholic> So change that file, simply repeating everything again, except that "/opt" --> "opt" in the 2nd heading?
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| 00:11 | <vagrantc> alazyworkaholic: yes
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| 00:11 | <alazyworkaholic> I'll do that soon. My image-update seems to be 1/2 done.
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| 00:17 | Rebooting client...
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| 00:20 | Still no joy.
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| 00:21 | try 'ltsp-config -o nbd-server'?
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| 00:22 | <vagrantc> nah
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| 00:22 | <alazyworkaholic> vagrantc: Well, I did it, and it said it "Created /tec/nbd-server/conf.d/swap.conf"
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| 00:24 | <vagrantc> hrm. it was an idle hope
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| 00:24 | alazyworkaholic: and pxelinux.cfg/default contains "ipappend 3" ?
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| 00:26 | <alazyworkaholic> Here's some of the boot output:
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| 00:26 | Begin: Mounting root file system ... Begin: Running /scripts/local-top ... Begin: Setting up nbd-client ... [ 5.373071] nbd: registered device at major 43
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| 00:26 | Error: Socket failed: Connection refused
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| 00:26 | done. Begin: Running /scripts/local-premount ... done
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| 00:26 | <vagrantc> alazyworkaholic: firewalling on the ltsp server?
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| 00:26 | alazyworkaholic: is nbd-server running on the server?
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| 00:27 | * vagrantc has to head out soon | |
| 00:28 | <alazyworkaholic> No, pxelinux.cfg/default still has ipappend 2!
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| 00:29 | <vagrantc> alazyworkaholic: manually change that to ipappend 3 and retry booting
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| 00:29 | <alazyworkaholic> doing that...
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| 00:29 | <vagrantc> and then just need to figure out why it's not kicking in
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| 00:30 | <alazyworkaholic> need to reboot nbd-server after that?
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| 00:30 | <vagrantc> no
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| 00:30 | just need to reboot your client
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| 00:30 | <alazyworkaholic> rebooting...
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| 00:32 | service --status-all prints a list of running services, with +, - or ? for each. Even after explicitly stopping, starting nbd-server, I still see a ? . Is there another way to verify it's running?
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| 00:32 | I don't expect a firewall issue. Everything's pretty standard. I haven't messed with it.
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| 00:33 | <vagrantc> pgrep -l -a -f nbd-server
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| 00:33 | or just nbd
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| 00:33 | <alazyworkaholic> Uau! I think that worked. The client just went past its last fail-point!
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| 00:33 | <vagrantc> it was ipappend
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| 00:33 | !ipappend
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| 00:33 | <ltsp> ipappend: o temporarily solve DHCP problems in the initramfs, try putting IPAPPEND 3 after the APPEND line in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default. More info: http://www.syslinux.org/wiki/index.php/SYSLINUX#IPAPPEND_flag_val_.5BPXELINUX_only.5D
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| 00:34 | <alazyworkaholic> ok, I'll try to figure out why it didn't carry over, but thank you very much. Just got my login screen!
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| 00:36 | I'll be back another day to try to work out the configuration I want, but I can celebrate a little. Thank you! Do you know of any good documentation, besides what's on the LTSP wiki?
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| 00:37 | <vagrantc> alazyworkaholic: documentation in LTSP could definitely use significant updating
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| 00:38 | so, i don't know of "good" documentation at this point
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| 00:42 | <alazyworkaholic> vagrantc: That's ok. I found some in greek (url not with me) and google translate does a good enough job.
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| 00:42 | <vagrantc> hah
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| 14:04 | <dgroos> Been exploring problem with authenticating to AD with pbis-open on my fat clients. I might have found something.
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| 14:06 | When authentication to local users on the clients work, the setting in
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| 14:08 | “/etc/ssh/sshd_config” defines “GSSAPIAuthentication no”.
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| 14:09 | But when no users can log onto the clients, the “/etc/ssh/sshd_config” defines “GSSAPIAuthentication yes”.
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| 14:12 | I want to look at the /etc/ssh/sshd_config” file on the client.
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| 14:14 | <alkisg> dgroos: can you `ssh user@server` from a local client term?
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| 14:14 | I assume no, correct?
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| 14:14 | sshd_config on the client makes no sense as it's about the client ssh *server* which isn't running at all
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| 14:15 | <dgroos> Hi alkisg I’ve tried to check out the client ssh config file but am not able to get a prompt using epoptes.
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| 14:15 | <alkisg> That doesn't sound good :)
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| 14:15 | <dgroos> Is that what you mean ‘by a local client term’
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| 14:15 | <alkisg> Yes,one way to do that
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| 14:16 | Are you currently near the server etc?
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| 14:16 | <dgroos> I’ve “ssh -X …” to the server, have launched epoptes, booted a client with WOL, but yeah, no prompt when I access the clients this wya
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| 14:16 | I’ve noticed that it doesn’t work with -X forwarding but it does work when I’m sitting at the server.
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| 14:17 | Tried launching epoptes both with and w/out sudo
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| 14:17 | <alkisg> So currently you have ssh access to the server and wol access to the clients?
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| 14:17 | <dgroos> No, I vpn into the district (am right now)
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| 14:17 | yes
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| 14:17 | <alkisg> I have some time to help over vnc, would you like me to?
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| 14:18 | epoptes-client root terminal is probably not working due to the vpn
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| 14:18 | As your x server isn't local
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| 14:19 | <dgroos> I know you do so much for the ltsp community so I hesitate to ask…
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| 14:19 | <alkisg> No worries I know you can't pay me otherwise you wouldn't waste 2-3 weeks searching for a solution :)
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| 14:19 | Let's start
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| 14:20 | Your host pc, is it windows or linux?
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| 14:20 | <dgroos> OK, thanks man
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| 14:20 | <alkisg> (the one at home)
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| 14:20 | <dgroos> I’m on the districts mac laptop
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| 14:20 | but I could get on my ubuntu machine that I have at home.
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| 14:21 | <alkisg> And how does ssh -X work there, some kind of xorg emulation for macs?
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| 14:21 | * alkisg hasn't even seen macs... | |
| 14:21 | <dgroos> :-)
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| 14:22 | <alkisg> Basically I wanted a way to share the screen so that you can also watch what I'm doing
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| 14:22 | <dgroos> I’ll switch to my Ubuntu machine
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| 14:22 | <alkisg> But let's try the quick way first
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| 14:22 | Select the booted client on epoptes
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| 14:22 | And run this command:
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| 14:22 | sudo x11vnc -connect srv1-dide.ioa.sch.gr
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| 14:22 | (with the epoptes execute dialog, include the sudo there)
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| 14:23 | <dgroos> OK, am getting there...
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| 14:24 | <alkisg> You can do that from the mac?
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| 14:25 | Cool, I have it
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| 14:25 | <dgroos> just did…
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| 14:25 | cool
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| 14:25 | <alkisg> Now, right click, open terminal, root, remotely
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| 14:25 | Got that too
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| 14:25 | <dgroos> k
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| 14:26 | <alkisg> Now I'll need a username/password from the server (in a pm), since you can't see the client screen
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| 14:26 | You can create a test user with no permissions...
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| 14:26 | Maybe both a local user and an ad user, to test both
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| 14:26 | <dgroos> I’ve got on…
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| 14:26 | OK
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| 20:57 | <albinorabbit> Been playing with LTSP fat clients - noticed that the LTSP default of mounting /home/<user> via sshfs has a pretty poor performance. Tried switching to using weak cipher 'arcfour' for connections per an article I read but still a pretty poor transfer rate. Has anyone here tried any alternative approaches for /home/<user> mounting?
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