IRC chat logs for #ltsp on irc.freenode.net (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?
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]
03:11
<mmarconm>
is there some dhcp running something like that ?
03:15
<bennabiy>
I am not sure what is causing it.
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)
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
14:51
<bennabiy>
will do
14:51
!ltsp-manager
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
15:15
<bennabiy>
alkisg: do I have the ability to use ltsp-manager to only set up portions without doing the whole ltsp-pnp?
15:15
<alkisg>
bennabiy: ltsp-manager can be used, sure, but it's more useful when you use dnsmasq
15:16
<bennabiy>
alkisg: understood. I am thinking of switching an existing lab over to use it, so I can test it out
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
15:17
so pnp would not be beneficial
15:19
alkisg: would I need to remove the package ltsp-server-standalone?
15:26
<alkisg>
bennabiy: no
15:27
you can replace isc-dhcp with dnsmasq without removing ltsp-server-standalone
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...
15:28
<bennabiy>
great
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?
15:44
alkisg: is the greek schools ppa the best place to get the ltsp-manager, or should I just git clone it?
15:44
as in, is the greek schools ppa going to stay around?
15:53
hmm, so I added ltsp-manager from ppa, and then lost my dns
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,
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,
15:58
the greek schools ppa is the place to get ltsp-manager for ubuntu, yes,
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,
15:58
and about dns, did you run initial-setup?
15:59
<bennabiy>
so should I change /usr/share/ltsp-manager/if-up.s to reflect my ltsp network?
15:59
<alkisg>
And /etc/dnsmasq.d/ltsp-server-dnsmasq.conf
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
16:02
I couldn't bring up the wiki page to get the instructions without doing that
16:02
<alkisg>
bennabiy: in typical ubuntu setups, dnsmasq is used for dns, so /etc/resolv.conf already points to 127.0.0.1
16:02
ltsp-manager doesn't change that on installation
16:02
Do you have some non-typical configuration?
16:03
E.g. did you install the server using the server cd instead of the desktop cd?
16:03
<bennabiy>
I did the initial install from a livecd, but used debootstrap
16:04
because of zfs root
16:04
<alkisg>
OK, run initial-setup from ltsp-manager, and reboot, and see if it's still broken
16:05
<bennabiy>
I changed /usr/share/ltsp-manager/if-up.s to reflect my current static IP I assign for my ltsp network.
16:05
I run a 2 nic setup
16:05
do I need to remove the ipappend 3 ?
16:06
<alkisg>
ipappend 3 doesn't cause any issues (usually) and it's going to be default for ltsp in future versions
16:06
So I think you can leave it
16:06
<bennabiy>
ok
16:15
alkisg: where does the initial-setup.sh get $TEACHERS variable from?
16:17
<alkisg>
bennabiy: did you setup ltsp-manager, or are you trying to run it from git?!
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
16:18
I am just going through the code
16:18
<alkisg>
OK, cool
16:19
So TEACHERS is read from /etc/default/ltsp-shared-folders
16:19
It's a group named "teachers" that ltsp-manager creates on postinst
16:19
Teachers automatically get shared folders for all the classes they teach
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
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
16:27
Because you're using software that mainly targets schools :D
16:27
I did make it configurable, if for some reason you don't feel good with the defaults
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...
16:36
I understand RESTRICT_DIRS and the TEACHERS group, but then how do the share groups get used only for certain people?
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?
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...
16:48
logout fixed...
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16:57
<alkisg>
The groups are owned by 1000 and group $GROUP, not group $TEACHERS
16:58
Classes: $GROUP - shared, 1000:$GROUP, rw
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?
17:27
<alkisg>
bennabiy: if you uninstalled isc-dhcp, you're not using it :)
17:28
Also you can check the output of ss or netstat for which one listens to the dhcp port
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
17:31
<alkisg>
bennabiy: what are the contents of this? /var/lib/ltsp-manager/initial-setup
17:31
*cat
17:31
<bennabiy>
nothing
17:31
non-existant
17:32
<alkisg>
And you're running initial-setup as root?
17:33
Can you run it from a shell, to see errors etc? sudo /usr/share/ltsp-manager/initial-setup.sh
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...
17:34
now I have initial setup
17:35
<alkisg>
Uninstall both isc-dhcp and tftpd-hpa, otherwise you're asking for trouble :)
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
17:41
I had to manually add a nameserver again to get back to talk to you here
17:41
<alkisg>
Why are you using /etc/network/interfaces in a desktop installation, instead of network manager?
17:41
The point is to divert as little as possible from standard ubuntu installations
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.
18:27
<alkisg>
ifupdown is getting deprecated
18:27
It's best to use supported tools instead of ones that are getting deprecated...
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
18:49
Do you have resolvconf installed? What are its entires in /run/resolvconf?
18:49
Is /etc/resolv.conf a symlink?
18:50
Do you have network manager installed even though you're using /etc/network/interfaces?
18:50
All these need to be properly configured...
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