IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 1 June 2017 (all times are UTC)
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| 08:32 | <larryni> Morning
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| 08:33 | <alkisg> Good morning
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| 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
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| 08:33 | I went through all the config files I could think of and changed the names
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| 08:34 | Everything works, thin clients are booting
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| 08:34 | but I cannot get Internet access
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| 08:34 | even though I am able to access the router
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| 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
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| 08:35 | or it tries anyways
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| 08:36 | any idea what I am missing?
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| 08:37 | oh, and I know there is internet access as I am listening to radio through wifi on my laptop
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| 08:41 | <alkisg> larryni: are your interfaces still eth2 and eth3?
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| 08:41 | <larryni> yes
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| 08:41 | <alkisg> Which distro/version?
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| 08:42 | <larryni> Ubuntu 14.04
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| 08:42 | <alkisg> Go and rename them back to eth0 and eth1 from /etc/udev/rules.d/70-persistent-net.rules
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| 08:42 | You obviously had NAT setup based on those names
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| 08:42 | And with the renaming, your NAT broke
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| 08:43 | <larryni> ok
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| 08:43 | <alkisg> You can just rm -f /etc/udev/rules.d/70-persistent-net.rules and reboot the server
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| 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.
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| 09:17 | oops, looks like my ethernet ports are now swapped - thin clients booting again
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| 09:18 | router is accessible again as well, but still no Internet access
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| 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?
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| 09:21 | <larryni> yes
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| 09:21 | and I waqs wrong about the thin clients
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| 09:21 | <alkisg> I assume you're using a 2 NIC setup, with one of them as "internal to only LTSP clients", right?
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| 09:22 | <larryni> they get an ip address, but then quit at TFPT
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| 09:22 | yes, 2 NIC setup
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| 09:22 | <alkisg> Eh, wait, are you saying that clients can't access the internet or that they can't boot?
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| 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?
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| 09:23 | <larryni> now they do not boot either, they connect to dhcp, get a client address, then boot fails shortly after
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| 09:23 | eth0/eth1 are now swapped, but I swapped the ethernet leads
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| 09:24 | <alkisg> Put the leads back, and edit /etc/udev/rules.d/70-persistent-net.rules so that they have the correct names
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| 09:24 | You still have some setup based on names, so you need to put them as they were
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| 09:24 | E.g. maybe you have restricted tftpd setup to eth0
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| 09:25 | So change the eth0 and eth1 names in /etc/udev/rules.d/70-persistent-net.rules and reboot the server
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| 09:25 | You would avoid all that complexity if you were using ltsp-pnp :)
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| 09:25 | !ltsp-pnp
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| 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
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| 09:31 | <larryni> thin clients are booting again :o)
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| 09:32 | but still no Internet access on either the server or clients
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| 09:33 | <alkisg> Can you ping your router from your server?
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| 09:33 | <larryni> I'll certainly look at ltsp-pnp for when I have to do a new setup
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| 09:33 | yes, I can ping and access the router
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| 09:34 | <alkisg> And can you ping 8.8.8.8?
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| 09:35 | <larryni> no, destination host unreachable - this is the case for all outside urls and IPs
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| 09:36 | <alkisg> Did you setup the networking yourself, or someone else did it?
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| 09:36 | <larryni> I did it myself, it was running fine for about 2 years
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| 09:37 | <alkisg> larryni: did you put mac-address based filters in your router's firewall?
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| 09:37 | Or in your server's firewall?
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| 09:38 | In any case, it's not about ltsp at all, it's plain "networking in ubuntu" questions now...
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| 09:38 | <larryni> nope, no access controls set on router - I even factory reset it to make sure
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| 09:38 | <alkisg> If your server can ping the router but not the internet.... something blocks it, and it's not ltsp related
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| 09:38 | <larryni> weird...
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| 09:39 | I must have accidentally messed up something else when I tried to get the server back up after mobo change
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| 09:45 | time for a quick smoke break! I'll report back later
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| 09:46 | <alkisg> No worries; nothing from those was ltsp-related ;)
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| 09:46 | <larryni> Thanks for your help anyway ;o)
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| 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.
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| 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.
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| 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
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| 18:22 | <adrianorg> vagrantc: thanks. I did some previous research about these gnome settings but found nothing yet. I'll keep searching.
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| 18:22 | <vagrantc> i know there's a patch in ubuntu to disable it when LTSP is detected
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| 18:30 | <adrianorg> vagrantc: do you know which package is patched?
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| 18:32 | <vagrantc> not exactly ... and not sure if they've kept the patch in recent versions
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| 18:32 | i don't use ubuntu, so i know it in general, but the specifics are lost on me
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| 18:32 | <alkisg> MATE has such a patch
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| 18:33 | And I requested its removal, so it'll go away after 16.04... :D
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| 18:33 | <adrianorg> alkisg: :-)
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| 18:34 | <alkisg> It should be possible with policykit though
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| 18:34 | (in flashback)
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| 18:37 | <adrianorg> alkisg: vagrantc: thanks. I'll try your suggestions.
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