IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 24 October 2017 (all times are UTC)
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| 01:33 | <bennabiy> alkisg: have you experience resolv.conf not updating after setting up ltsp?
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| 01:33 | every time I reboot, I need to repopulate the file manually
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| 02:34 | <mmarconm> bennabiy, update resolv.conf on the server or on the ltsp chroot ?
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| 02:37 | <bennabiy> server]
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| 03:11 | <mmarconm> is there some dhcp running something like that ?
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| 03:15 | <bennabiy> I am not sure what is causing it.
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| 03:15 | I just did a reinstall, and it started happening again
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| 05:22 | <alkisg> bennabiy: are you following the ltsp-manager installation?
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| 13:34 | <bennabiy> No, this is with classic install still (existing system)
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| 13:34 | alkisg: ^
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| 14:51 | <alkisg> bennabiy: then you'd need to manually apply the workarounds from the ltsp-manager's "initial-setup" script, see its documentation in the site
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| 14:51 | <bennabiy> will do
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| 14:51 | !ltsp-manager
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| 14:51 | <ltsp> ltsp-manager: LTSP Manager is a GUI tool that makes LTSP maintenance easy. It's the recommended way to install LTSP in common setups. More info: http://wiki.ltsp.org/wiki/Ltsp-manager
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| 15:06 | <bennabiy> alkisg: does that still apply if I am doing isc-dhcp-server?
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| 15:12 | <alkisg> bennabiy: I don't know what workarounds isc-dhcp needs, I don't use nor troubleshoot it
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| 15:15 | <bennabiy> alkisg: do I have the ability to use ltsp-manager to only set up portions without doing the whole ltsp-pnp?
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| 15:15 | <alkisg> bennabiy: ltsp-manager can be used, sure, but it's more useful when you use dnsmasq
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| 15:16 | <bennabiy> alkisg: understood. I am thinking of switching an existing lab over to use it, so I can test it out
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| 15:17 | but it is like I said before, the server is 64 bit and all the clients at the moment short 2 are 32 bit
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| 15:17 | so pnp would not be beneficial
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| 15:19 | alkisg: would I need to remove the package ltsp-server-standalone?
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| 15:26 | <alkisg> bennabiy: no
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| 15:27 | you can replace isc-dhcp with dnsmasq without removing ltsp-server-standalone
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| 15:27 | bennabiy: if you plan to use ltsp-manager with dnsmasq etc etc and just use a chroot instead of the server /, it will work fine...
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| 15:28 | <bennabiy> great
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| 15:29 | Currently, my server has a static entry in /etc/network/interfaces for both interfaces... will ltsp-manager need to modify that? Do I need to set my ltsp network to .67.0 network?
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| 15:44 | alkisg: is the greek schools ppa the best place to get the ltsp-manager, or should I just git clone it?
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| 15:44 | as in, is the greek schools ppa going to stay around?
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| 15:53 | hmm, so I added ltsp-manager from ppa, and then lost my dns
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| 15:57 | <alkisg> bennabiy: ltsp-manager's "initial-setup" will prompt you first, and then it will add a "server" line to your /etc/network/interfaces,
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| 15:57 | you don't need to change to .67.0, but if you do change, you get automatic dhcp and automatic nat for thin clients,
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| 15:58 | the greek schools ppa is the place to get ltsp-manager for ubuntu, yes,
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| 15:58 | I *hope* the greek schools ppa will stay around, and it's fate is basically about the same as the ltsp development, but I can't say for sure,
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| 15:58 | and about dns, did you run initial-setup?
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| 15:59 | <bennabiy> so should I change /usr/share/ltsp-manager/if-up.s to reflect my ltsp network?
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| 15:59 | <alkisg> And /etc/dnsmasq.d/ltsp-server-dnsmasq.conf
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| 16:01 | <bennabiy> I just installed ltsp-manager and it set my resolv.conf to localhost which has no dns at the moment. I had to manually put dns server back in there
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| 16:02 | I couldn't bring up the wiki page to get the instructions without doing that
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| 16:02 | <alkisg> bennabiy: in typical ubuntu setups, dnsmasq is used for dns, so /etc/resolv.conf already points to 127.0.0.1
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| 16:02 | ltsp-manager doesn't change that on installation
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| 16:02 | Do you have some non-typical configuration?
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| 16:03 | E.g. did you install the server using the server cd instead of the desktop cd?
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| 16:03 | <bennabiy> I did the initial install from a livecd, but used debootstrap
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| 16:04 | because of zfs root
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| 16:04 | <alkisg> OK, run initial-setup from ltsp-manager, and reboot, and see if it's still broken
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| 16:05 | <bennabiy> I changed /usr/share/ltsp-manager/if-up.s to reflect my current static IP I assign for my ltsp network.
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| 16:05 | I run a 2 nic setup
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| 16:05 | do I need to remove the ipappend 3 ?
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| 16:06 | <alkisg> ipappend 3 doesn't cause any issues (usually) and it's going to be default for ltsp in future versions
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| 16:06 | So I think you can leave it
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| 16:06 | <bennabiy> ok
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| 16:15 | alkisg: where does the initial-setup.sh get $TEACHERS variable from?
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| 16:17 | <alkisg> bennabiy: did you setup ltsp-manager, or are you trying to run it from git?!
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| 16:17 | * alkisg hopes it's the former, otherwise I don't know how broken that setup will be... | |
| 16:18 | <bennabiy> ltsp-manager from ppa
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| 16:18 | I am just going through the code
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| 16:18 | <alkisg> OK, cool
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| 16:19 | So TEACHERS is read from /etc/default/ltsp-shared-folders
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| 16:19 | It's a group named "teachers" that ltsp-manager creates on postinst
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| 16:19 | Teachers automatically get shared folders for all the classes they teach
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| 16:20 | <bennabiy> See, we do not use LTSP in a classroom setting, so teachers means nothing to us, but I do make use of shared folders
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| 16:26 | <alkisg> bennabiy: sure, I understand, so you need to adjust to using "teachers" as the name of the group that has shared folders :D
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| 16:27 | Because you're using software that mainly targets schools :D
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| 16:27 | I did make it configurable, if for some reason you don't feel good with the defaults
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| 16:27 | But it's not a user-visible setting, so I don't see why you should bother with that...
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| 16:34 | <bennabiy> I am looking at /etc/default/ltsp-shared-folders, and trying to understand the share groups etc...
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| 16:36 | I understand RESTRICT_DIRS and the TEACHERS group, but then how do the share groups get used only for certain people?
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| 16:37 | <alkisg> bennabiy: finish the whole setup first, and we'll get to the shared groups later...
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| 16:39 | <bennabiy> so if I had a group called lab, and one called scribes, then I would have a folder /home/Shared/lab and /home/Shared/scribes, both owned by UID 1000 and group TEACHERS? , and each person in TEACHERS has ~/Public/lab and ~/Public/scribes as read only?
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| 16:45 | ok, initial setup done
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| 16:46 | <bennabiy> hrm, all of a sudden, a lot of my menu graphics are gone...
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| 16:48 | logout fixed...
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| 16:57 | <alkisg> The groups are owned by 1000 and group $GROUP, not group $TEACHERS
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| 16:58 | Classes: $GROUP - shared, 1000:$GROUP, rw
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| 16:58 | Each teacher additionally has: $GROUP - $teacher, $UID:$GID, ro
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| 17:16 | <bennabiy> so how do I know whether I am using the isc-dhcp-server or dnsmasq?
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| 17:27 | <alkisg> bennabiy: if you uninstalled isc-dhcp, you're not using it :)
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| 17:28 | Also you can check the output of ss or netstat for which one listens to the dhcp port
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| 17:29 | <bennabiy> Every time I open ltsp-manager, I get the prompt that initial-setup has not run, but I am running it each time
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| 17:31 | <alkisg> bennabiy: what are the contents of this? /var/lib/ltsp-manager/initial-setup
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| 17:31 | *cat
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| 17:31 | <bennabiy> nothing
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| 17:31 | non-existant
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| 17:32 | <alkisg> And you're running initial-setup as root?
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| 17:33 | Can you run it from a shell, to see errors etc? sudo /usr/share/ltsp-manager/initial-setup.sh
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| 17:34 | <bennabiy> just did, couldn't bind to port 69 for dnsmasq, and then when I stopped tftpd-hpa, then I ran it and did not get any output apart from This will perform...
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| 17:34 | now I have initial setup
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| 17:35 | <alkisg> Uninstall both isc-dhcp and tftpd-hpa, otherwise you're asking for trouble :)
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| 17:36 | <bennabiy> ok
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| 17:39 | <bennabiy> initial-setup done
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| 17:40 | <bennabiy> hrm. so I do not have dns working by default, even though I have dns-nameservers X.X.X.X Y.Y.Y.Y in my /etc/network/interfaces
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| 17:41 | I had to manually add a nameserver again to get back to talk to you here
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| 17:41 | <alkisg> Why are you using /etc/network/interfaces in a desktop installation, instead of network manager?
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| 17:41 | The point is to divert as little as possible from standard ubuntu installations
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| 17:42 | So as to *minimize* administration and troubleshooting...
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| 18:19 | <bennabiy> because I use this computer for more than just a lab
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| 18:19 | <bennabiy> And I do not trust network manager :) I am sure it has gotten more stable over the years, but I use bridges etc.
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| 18:27 | <alkisg> ifupdown is getting deprecated
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| 18:27 | It's best to use supported tools instead of ones that are getting deprecated...
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| 18:28 | ifupdown is not even preinstalled in recent debian/ubuntu versions anymore
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| 18:35 | <bennabiy> I saw that
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| 18:47 | <alkisg> bennabiy: anyways, dnsmasq is supposed to cooperate just fine with ifupdown/interfaces
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| 18:48 | <bennabiy> yes, and in this case, it is not
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| 18:48 | <alkisg> bennabiy: I mean, you have it misconfigured for some reason
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| 18:49 | Do you have resolvconf installed? What are its entires in /run/resolvconf?
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| 18:49 | Is /etc/resolv.conf a symlink?
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| 18:50 | Do you have network manager installed even though you're using /etc/network/interfaces?
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| 18:50 | All these need to be properly configured...
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