IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 24 April 2016 (all times are UTC)
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| 01:49 | kev has joined IRC (kev!49a4fcd2@gateway/web/freenode/ip.73.164.252.210) | |
| 01:55 | <kev> Hi Istarted a chat last week with some one on here in Portland about a capstone project I'm doing using LTSP. It had to do with equipping classrooms in third world countries. Is that individual on line presently?
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| 03:51 | <gwd_> hi, newbie here ... can i get help with dhcp on virtual box for setting up an ubuntu ltsp server? my virtual network card is recognised but not my virtual NAT card to connect to the Internet
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| 03:52 | <maldridge> if I understand you correctly you are trying to virtualize an ltsp server?
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| 03:53 | <gwd_> yes, for test purposes, so i can deploy to an actual lab ... i've got the ltsp part to work, but not the internet part
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| 03:54 | <maldridge> in theory you can bind the external adapter to the VM and it will "just work"
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| 04:01 | <gwd_> installing ubuntu using an adapter with internet connection went fine, but the internal adapter was added afterwards used the interface address i set in dhcp.conf and the external adapter isnt accessible anymore
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| 04:02 | <maldridge> if you type "ip link" within the vm do you see the number of adapters you expect to see
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| 04:03 | <gwd_> i want access to both adapters, the internal one to give out addresses to terminals and the external one for internet connectivity
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| 04:04 | <maldridge> yes, do you actually have both still attatched to the VM
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| 04:05 | <gwd_> yes, ip link (and ip addr) shows both adapters, but the external one is using a random address i never set in dhcp.conf
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| 04:06 | i set the internal network to 10.10.10.0 but the external one is using 10.0.3.0; i don't know where it's getting that address from
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| 04:07 | <maldridge> that sounds like virtualbox NAT
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| 04:10 | <gwd_> yes, i had virtual box use NAT for the external network to access internet from my host computer; it worked before on the classic ltsp install, but i'm using standalone ltsp on the latest ubuntu (xenial) now
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| 04:11 | so i don't know what changed between the classic and the recent version; even the interface naming is different: no more eth0, etc
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| 04:20 | the previous classic installation (using the alternate distro, 12.04) pretty much "just worked", like you said; this latest version requires some "dhcp surgery"
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| 04:29 | <maldridge> hmm, not sure as I don't really run ubuntu anymore
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| 04:29 | it could be something in your vbox install (likely) or something in your ubuntu config (less likely)
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| 04:37 | <gwd_> well, i haven't installed the virtualbox guest additions as yet, so i'll give that a crap shoot; i hope transitioning to a physical ltsp implementation would be more straightforward, like the virtualised classic install was
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| 05:00 | <alkisg> kev: you're looking for vagrantc, he isn't around in weekends much. Maybe tomorrow night.
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| 05:00 | gwd_: see the new method:
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| 05:00 | !ltsp-pnp
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| 05:00 | <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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| 05:01 | <alkisg> It's using only 1 nic and it doesn't use a dhcp server, only a proxydhcp server
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| 05:27 | <gwd_> alkisg: ltsp-pnp seems requires/assumes that the internal adapter is addressed to 192.168.67.1; makes me wonder if i should have left the default network ip scheme instead of basing it on network10.10.10.0
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| 05:38 | <alkisg> gwd_: the 192.168.67.1 part is only for convenience; you can change 1 line to make it work on 10.10.10.10.
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| 05:39 | But note that 192.168.67.1 is only for the internal adapter, which is *not* the recommended ltsp-pnp setup
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| 05:39 | The recommended ltsp-pnp setup uses only one nic, in whatever subnet the user wishes; ltsp-config dnsmasq configures dnsmasq automatically
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| 05:56 | <gwd_> alkisg: i'd begun reinstalling ubuntu on virtualbox but starting off with both adapters setup this time, instead of using one then swapping in a second, and the installation seems to be progressing just fine with both cards detected! hopefully i'll get coherent results when i finish with the standalone ltsp (and sticking with the default addressing for the while); i think i'll fire up a single adapter ltsp-pnp install for comparison late
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| 10:38 | <cerdbrink> Hallo, gibt es ein LTSP Forum wo man sich mit "Anwendern" über Erfahrung mit LTSP austauschen kann? oder Hilfe bekommt?
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| 11:29 | <alkisg> !learn alkisg-todo test aes-ni instruction set for faster ssh
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| 11:29 | <ltsp`> (learn [<channel>] <key> as <value>) -- Associates <key> with <value>. <channel> is only necessary if the message isn't sent on the channel itself. The word 'as' is necessary to separate the key from the value. It can be changed to another word via the learnSeparator registry value.
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| 11:29 | <alkisg> !learn alkisg-todo as test aes-ni instruction set for faster ssh
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| 11:29 | <ltsp`> The operation succeeded.
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| 11:40 | <alkisg> $ for c in chacha20-poly1305@openssh.com aes128-ctr aes192-ctr aes256-ctr aes128-gcm@openssh.com aes256-gcm@openssh.com; do echo Cipher=$c; scp -o Ciphers=$c localhost:ubuntu-16.04-desktop-i386.iso /dev/null; done
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| 11:40 | Cipher=chacha20-poly1305@openssh.com
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 159.4MB/s 00:09
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| 11:40 | Cipher=aes128-ctr
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 717.2MB/s 00:02
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| 11:40 | Cipher=aes192-ctr
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 478.1MB/s 00:03
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| 11:40 | Cipher=aes256-ctr
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 358.6MB/s 00:04
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| 11:40 | Cipher=aes128-gcm@openssh.com
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 717.2MB/s 00:02
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| 11:40 | Cipher=aes256-gcm@openssh.com
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| 11:40 | ubuntu-16.04-desktop-i386.iso 100% 1434MB 717.2MB/s 00:02
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| 11:41 | So the default chacha20 is 4.5 times *slower*, on processors that support aes
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| 11:41 | And, for future puchases, all ltsp servers should support aes instructions
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| 16:30 | <cerdbrink> nabend
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| 17:11 | <alkisg> cerdbrink: most people here speak english, and their native languages...
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| 17:12 | I don't know of any german ltsp forum
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| 17:15 | <cerdbrink> oh okay
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| 17:23 | <alkisg> If you're able to ask questions in english and understand the answers, you're welcome to...
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| 17:25 | <cerdbrink> sorry but my english is not so good .. i look at the debianforum.. thanks
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| 20:34 | <bennabiy> alkisg: anyone reporting issues with 16.04 and LTSP?
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| 20:34 | MATE
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| 20:34 | ?
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| 20:43 | <maldridge> I've had issues with MATE in general, but I don't have any ltsp MATE installs at the moment
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| 20:48 | <Hyperbyte> I'm considering MATE as replacement for gnome-fallback desktop in 16.04 actually
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| 20:48 | Currently running 14.04 with gnome-fallback.
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| 20:48 | Or flashback or whatever it's called.
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| 20:56 | <maldridge> it looks nice, but I think I'd go with cinnamon over MATE
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| 21:02 | <Hyperbyte> Does Cinnamon work properly with LTSP though?
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| 21:02 | I thought it required compositing?
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| 21:02 | <vagrantc> haven't seen cinnamon work well with ltsp
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| 21:03 | <maldridge> ^
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| 21:03 | It runs okay in software rendering mode, but the machines I'm running it on really should just be fat installs
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| 21:05 | <vagrantc> cinnamon didn't work with the default of 16-bit colors a while ago, at least: https://bugs.debian.org/705143
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| 21:05 | <maldridge> hmm, I did not have that issue
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| 21:09 | <vagrantc> hah, that bug is pretty old ... i should try with recent versions of things.
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