IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 1 June 2017   (all times are UTC)

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08:32
<larryni>
Morning
08:33
<alkisg>
Good morning
08:33
<larryni>
I recently had to change the mobo of our ltsp server. The ethernet adapters were previously named eth0 and eth1, now they automatically renamed eth2 and eth3
08:33
I went through all the config files I could think of and changed the names
08:34
Everything works, thin clients are booting
08:34
but I cannot get Internet access
08:34
even though I am able to access the router
08:35
I notices that when I ping a local address it goes through eth2, and when I ping an outside address it goes through eth3
08:35
or it tries anyways
08:36
any idea what I am missing?
08:37
oh, and I know there is internet access as I am listening to radio through wifi on my laptop
08:41
<alkisg>
larryni: are your interfaces still eth2 and eth3?
08:41
<larryni>
yes
08:41
<alkisg>
Which distro/version?
08:42
<larryni>
Ubuntu 14.04
08:42
<alkisg>
Go and rename them back to eth0 and eth1 from /etc/udev/rules.d/70-persistent-net.rules
08:42
You obviously had NAT setup based on those names
08:42
And with the renaming, your NAT broke
08:43
<larryni>
ok
08:43
<alkisg>
You can just rm -f /etc/udev/rules.d/70-persistent-net.rules and reboot the server
08:43
<larryni>
will give that a go
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09:11
<larryni>
I just tried that. I also changed the interface and isc-dhcp-server files to reflect the changes. But now I can't access the router and the thin clients don't connect to dhcp either.
09:17
oops, looks like my ethernet ports are now swapped - thin clients booting again
09:18
router is accessible again as well, but still no Internet access
09:21
<alkisg>
larryni: so now you reverted everything back to eth0 and eth1 as it previously was, and yet you still don't have internet access from the clients?
09:21
<larryni>
yes
09:21
and I waqs wrong about the thin clients
09:21
<alkisg>
I assume you're using a 2 NIC setup, with one of them as "internal to only LTSP clients", right?
09:22
<larryni>
they get an ip address, but then quit at TFPT
09:22
yes, 2 NIC setup
09:22
<alkisg>
Eh, wait, are you saying that clients can't access the internet or that they can't boot?
09:23
Did you put the eth0/eth1 names as they previously were, or are they now swapped, for example maybe eth0 was the internal network before and now it's eth1?
09:23
<larryni>
now they do not boot either, they connect to dhcp, get a client address, then boot fails shortly after
09:23
eth0/eth1 are now swapped, but I swapped the ethernet leads
09:24
<alkisg>
Put the leads back, and edit /etc/udev/rules.d/70-persistent-net.rules so that they have the correct names
09:24
You still have some setup based on names, so you need to put them as they were
09:24
E.g. maybe you have restricted tftpd setup to eth0
09:25
So change the eth0 and eth1 names in /etc/udev/rules.d/70-persistent-net.rules and reboot the server
09:25
You would avoid all that complexity if you were using ltsp-pnp :)
09:25
!ltsp-pnp
09:25
<ltsp>
ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
09:31
<larryni>
thin clients are booting again :o)
09:32
but still no Internet access on either the server or clients
09:33
<alkisg>
Can you ping your router from your server?
09:33
<larryni>
I'll certainly look at ltsp-pnp for when I have to do a new setup
09:33
yes, I can ping and access the router
09:34
<alkisg>
And can you ping 8.8.8.8?
09:35
<larryni>
no, destination host unreachable - this is the case for all outside urls and IPs
09:36
<alkisg>
Did you setup the networking yourself, or someone else did it?
09:36
<larryni>
I did it myself, it was running fine for about 2 years
09:37
<alkisg>
larryni: did you put mac-address based filters in your router's firewall?
09:37
Or in your server's firewall?
09:38
In any case, it's not about ltsp at all, it's plain "networking in ubuntu" questions now...
09:38
<larryni>
nope, no access controls set on router - I even factory reset it to make sure
09:38
<alkisg>
If your server can ping the router but not the internet.... something blocks it, and it's not ltsp related
09:38
<larryni>
weird...
09:39
I must have accidentally messed up something else when I tried to get the server back up after mobo change
09:45
time for a quick smoke break! I'll report back later
09:46
<alkisg>
No worries; nothing from those was ltsp-related ;)
09:46
<larryni>
Thanks for your help anyway ;o)
09:46
<alkisg>
np
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17:43
<adrianorg>
Hi. How can I disable the "Power Off" menu on the thinclients? I'm running LTSP on Debian 8, gnome-flashback.
17:55
<vagrantc>
from a logged in session?
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18:16
<adrianorg>
vagrantc: my users are getting confused about the "Log Out" and "Power Off" menu entries, so they asked to disable the "Power Off" option.
18:17
<vagrantc>
adrianorg: right ... i presume that can be done with gnome dconf/gconf settings, but i don't know them off the top of my head
18:22
<adrianorg>
vagrantc: thanks. I did some previous research about these gnome settings but found nothing yet. I'll keep searching.
18:22
<vagrantc>
i know there's a patch in ubuntu to disable it when LTSP is detected
18:30
<adrianorg>
vagrantc: do you know which package is patched?
18:32
<vagrantc>
not exactly ... and not sure if they've kept the patch in recent versions
18:32
i don't use ubuntu, so i know it in general, but the specifics are lost on me
18:32
<alkisg>
MATE has such a patch
18:33
And I requested its removal, so it'll go away after 16.04... :D
18:33
<adrianorg>
alkisg: :-)
18:34
<alkisg>
It should be possible with policykit though
18:34
(in flashback)
18:37
<adrianorg>
alkisg: vagrantc: thanks. I'll try your suggestions.
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