IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 2 March 2020 (all times are UTC)
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| 09:23 | <meo> alkisg: guess what, you were right, it was a broken kernel and image -r helped
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| 09:24 | I guess long time ago I allowed ubuntu to update but never regenerated the image
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| 09:24 | and then when I did this popped up
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| 13:43 | <mwalters> Starting to think about upgrading to ltsp19+... looking at the vm image option... am I correct in thinking that this should be 100% ok to do a headless server with, since none of the client image is generated from the server root?
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| 13:45 | eh, this looks like unneeded complexity, though... at least for me
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| 13:45 | and looks like I could add additional boot options if I wanted more client image options in the future
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| 13:46 | (by starting chrootless)
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| 14:02 | <alkisg> mwalters: indeed
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| 14:03 | In general, if you're using the server for other things as well, e.g. it's also an ldap server or a web server etc etc, then a VM or a chroot do make sense, while if the server is mainly just an LTSP server, then chrootless sounds best
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| 14:03 | <mwalters> Yeah, you're right. It'll be ltsp only. Headless started to make less sense the moment I thought about things like epoptes
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| 14:05 | <alkisg> What's your usage scenario, how many clients etc?
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| 14:05 | <mwalters> 4 separate servers separated by wan
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| 14:06 | <alkisg> meo: nice, thanks for the update
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| 14:06 | mwalters: 4 separate servers => then it does make sense to have those headless and maintain a single image=VM that you sync between servers
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| 14:06 | <mwalters> Client count varies, but larges is like 30 clients
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| 14:06 | <alkisg> Well, if you do want that, to maintain a single image and not 4 separate ones
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| 14:06 | <mwalters> smallest is 5
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| 14:07 | yeah, we have reasonable connections, so syncing an image over wan isn't a big deal
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| 14:07 | (and I really wanted to get there eventually ;) )
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| 14:07 | <alkisg> And of course chrootless can do that as well
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| 14:07 | <mwalters> right now (ltsp5) they're all just clones of a base VM (the ltsp servers)
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| 14:08 | <alkisg> I think in your case I'd go for minimal, headless servers, a single VM, and I'd rsync the VM or the generated squashfs
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| 14:09 | <meo> alkisg: is image -r stateful? if I run this again will it revert to the newer kernel?
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| 14:09 | <mwalters> how does epoptes work in that type of environment? Right now I'm using virt-manager to connect to a remote client to use it if needed
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| 14:09 | <alkisg> meo: yes; it just renames stuff, no overwriting involved
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| 14:09 | <mwalters> since ssh -Y is sllooooooooow
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| 14:09 | <alkisg> mwalters: you can specify that the epoptes server is one of the "fat" clients
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| 14:09 | If you have an admin pc, you can indicate that
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| 14:10 | <mwalters> ah ok... so I could have a netbooting VM act as the epoptes server itself
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| 14:10 | (or any VM with epoptes on it)
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| 14:11 | <alkisg> yeah
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| 17:11 | <alkisg> !learn apt-purge as `To clean up packages in rc state: apt purge --auto-remove $(dpkg -l | awk '/^rc/ { print $2 }')`
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| 17:11 | <ltspbot> The operation succeeded.
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| 17:12 | <alkisg> !apt-purge
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| 17:12 | <ltspbot> apt-purge: To clean up packages in rc state: apt purge --auto-remove $(dpkg -l | awk '/^rc/ { print $2 }')
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| 18:07 | <JuJUBee> I just built a new ltsp server following the installation docs. When I boot a client, it finds the server but I get the following message "Begin: Retrying nfs mount ... mount call failed - server replied: Permission denied"
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| 18:07 | I never ran the ltsp nfs command
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| 18:09 | <alkisg> JuJUBee: well, run it :)
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| 18:09 | !install
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| 18:09 | <ltspbot> install: To install LTSP: https://ltsp.org/docs/installation/
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| 18:09 | <JuJUBee> alkisg, I thought sshfs is better?
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| 18:09 | <alkisg> https://ltsp.org/docs/installation/#nfs-server-configuration
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| 18:09 | <JuJUBee> I got the impression it was optional
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| 18:09 | <alkisg> JuJUBee: sshfs is the default for /home, nfs the default for / (rootfs)
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| 18:09 | <JuJUBee> Ah, ok
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| 18:09 | <alkisg> This isn't about nfs home
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| 18:10 | It's about nfs root
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| 18:10 | IF you wanted nfs home, you'd run: ltsp nfs --home=1
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| 18:10 | ....or such, see its man page
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| 18:10 | <JuJUBee> got it. Do I need to recreate the image?
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| 18:10 | <alkisg> No
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| 18:10 | <JuJUBee> Thanks
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| 18:10 | <alkisg> You don't even need to reboot the client
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| 18:10 | It should continue right when you start nfs :D
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| 18:11 | <JuJUBee> Cool
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| 19:23 | <foxhoundv> alkisg hello, this is Travis
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| 19:23 | <alkisg> Hi foxhoundv
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| 19:23 | !vnc-dide
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| 19:23 | <ltspbot> 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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| 19:23 | <alkisg> Let's use vnc, it'll be lots faster
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| 19:25 | <foxhoundv> it says reverse connect failed
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| 19:25 | <alkisg> Do you have xorg access?
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| 19:25 | Or are you e.g. via ssh?
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| 19:26 | E.g. does `xrandr` work?
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| 19:27 | <foxhoundv> I am remoted in through ESXi
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| 19:27 | <alkisg> Does xrandr work where you are?
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| 19:27 | <foxhoundv> never heard of it
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| 19:27 | <alkisg> Just type that command
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| 19:27 | It shows the available resolutions
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| 19:27 | To see if you have xorg or not
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| 19:27 | type: xrandr
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| 19:28 | <foxhoundv> it doesn't say anything about xorg
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| 19:29 | <alkisg> Does your server have a graphical interface?
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| 19:29 | <foxhoundv> yes
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| 19:29 | i used a desktop iso
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| 19:30 | <alkisg> https://termbin.com/pveic
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| 19:30 | foxhoundv: this is the output of my xrandr
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| 19:30 | If it says "Can't open display", then that's a problem
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| 19:30 | Does `xrandr` show the resolutions for you, or does it show "can't open display"?
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| 19:31 | <foxhoundv> yes it shows the resolutions
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| 19:31 | <alkisg> Which distribution and desktop environment and version is that?
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| 19:32 | E.g. ubuntu mate 18.04?
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| 19:32 | <foxhoundv> Ubuntu 18.04.4 LTS
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| 19:32 | <alkisg> So, gnome?
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| 19:32 | <foxhoundv> yes
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| 19:33 | <alkisg> Can you type this?
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| 19:33 | xrandr | nc termbin.com 9999
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| 19:33 | And paste the output here
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| 19:33 | So that I see if you're using wayland or xorg
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| 19:33 | (I thought you would be using kubuntu, btw...)
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| 19:33 | <foxhoundv> https://termbin.com/n4sd
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| 19:34 | <alkisg> OK this is normal xorg, it's not wayland
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| 19:34 | Are you sure you typed the command correctly there?
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| 19:34 | x11vnc -connect srv1-dide.ioa.sch.gr
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| 19:38 | <foxhoundv> I removed the /etc/ltsp/ltsp.conf file because I would get problems when I tried to create the image
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| 19:42 | <foxhoundv> it worked
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| 19:43 | <alkisg> foxhoundv: nice, but we're not done yet
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| 19:43 | Now please login to that client, and do these steps
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| 19:43 | "Now boot a single client, add the LTSP PPA to your sources, and install the client-side packages: apt install --install-recommends ltsp epoptes-client"
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| 19:44 | When that's done, move to "ltsp mode netbooting"
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| 19:44 | Ping if you get any issues
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| 19:44 | <foxhoundv> So I won't be installing the ltsp-proposal?
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| 19:44 | <alkisg> No, you don't need the proposed ppa
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| 19:45 | anywhere
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| 19:49 | <foxhoundv> Ok, it is finishing the last part right now
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| 19:50 | Done
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| 19:55 | alkisg will I still need to run "ltsp image raspbian --mksquashfs-params='-comp lzo'" or just "ltsp image raspbian" at the end?
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| 20:13 | <alkisg> foxhoundv: nah you already ran that
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| 20:13 | It should be fine now
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