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


Channel log from 27 August 2014   (all times are UTC)

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00:39
<gdi2k>
greetings, wondering if there is a way to selectively add more / less nbd swap space to selected thin clients based on MAC address
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01:10
<TheProf>
Good day. I hope everyone is doing well. I had a question about thin client architecture please -- does i386 vs amd64 matter if the server is running 64 bit? The thin client hardware is 64 bit but the default image served from the Edubuntu new install is 32 bit and I do not know how to change it to 64 bit. Thank you
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03:17
<gdi2k>
I completely borked my ltsp install and need to move to a new server. Can I copy all my /opt/ltsp directory after install ltsp-standalone on the new server and things should work? anything else I am missing (aside from the lts.conf stuff etc.)?
03:49
<TheProf>
gdi2k: Hello. I'm not at all an expert - I'm just waiting to see if someone can help with my previously-stated question. I can tell you that I have been in your situation and I did a clean installation of LTSP and only needed to modify lts.conf to what it was and everything else worked.
03:49
<gdi2k>
TheProf, yes, I'm busy rebuilding everything now
03:50
TheProf, the architecture does not matter unless your clients have lots of RAM
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03:51
<gdi2k>
TheProf, but if you want to switch you can
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03:51
<gdi2k>
just checking where the setting is - google ltsp-build-client.conf
03:51
<TheProf>
gdi2k: Thanks for looking at my question -- my thin clients have about 3 or 4 GB of ram. At some point I wanted to convert them to thick/fat/whatever the correct term is so I wondered if it mattered.
03:52
<gdi2k>
we have fast client machines and run them on 64 bit as fat clients
03:52
best thing we ever die
03:52
*did
03:52
but client machines have to be fast. Ours are newish Ivy Bridge machines, so it's fine
03:52
Celeron G1620s mostly running Xubuntu
03:53
<TheProf>
gdi2k: Ours are very capable machines -- core 2 duo machines
03:53
<gdi2k>
should be good running fat clients
03:53
no trouble with multimedia, audio, server load etc. that you have with thin clients
03:54
<TheProf>
Is it fat or thick or some other term I should be Googling?
03:54
<gdi2k>
fat
03:54
https://help.ubuntu.com/community/UbuntuLTSP/FatClients
03:54
not sure which OS you're on, that's for buntu family
03:55
<TheProf>
Great thank you. I'm using Edubuntu
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04:07
<TheProf>
gdi2k: so I just checked and I don't have ltsp-build-client.conf on my installation
04:08
Is it necessary to create the 64-bit images?
04:08
<gdi2k>
TheProf, yes, it's not there by default you have to create it. check out the fat client install guide, it tells you how to create it and what you can place inside
04:08
I believe so
04:08
actually, no, you can specify it as part of the ltsp-build-image command as an option
04:08
<TheProf>
OK - if I just want to create the thin client images for now as 64 bit do I need that file?
04:08
<gdi2k>
or you can place all your options in that file
04:08
<TheProf>
OK.
04:09
<gdi2k>
it's ltsp-build-client
04:09
not image
04:10
ltsp-build-client --dist amd64
04:10
<TheProf>
OK I'll try it out now.
04:11
<gdi2k>
hmm, no I think that's the distribution, not arch
04:11
ltsp-build-client --arch md64
04:11
man ltsp-build-client
04:11
ltsp-build-client --arch amd64
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04:32
<TheProf>
I tried it twice - both times the ltsp-build-client failed with an error -- it got to 'updating /var/lib/tftpboot directories for chroot: amd64 then cp: cannot stat '/tmp/tmp.randomeletters/boot.': no such file or directory.
04:44
<gdi2k>
TheProf, strange, not encountered that before
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04:45
<gdi2k>
anyone good with epoptes around here? I have moved client chroot from one server to another, but epoptes no longer works. I have set the server IP correctly in chroot and updated the ssl cert, but the clients are not showing up. how can I diagnose this?
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07:06
<alkisg>
TheProf: 32bit clients can access up to 64 GB RAM, so 64bit chroot isn't a requirement
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14:21
<servercbe>
hi! I really need help! My thin client restart every time I open chrome or fire fox... and I have all my students here! help! please
14:22
I am using ubuntu 12.04 updated, ci3, 16gb ram, 1tb dd
14:24
any suggestions?
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15:11
<ben_nabiy>
vagrantc, alkisg: I think I can work out the support for mint 17 but hope to pick your brains about the best way to go about it. Ultimately, I need to either do an install, uninstall of packages, reinstall of others, or set up 2 apt locations, and get the proper pinning in place before the packages install.
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15:12
<bennabiy>
debootstrap only supports one mirror still, right?
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15:23
<championofcyrod1>
bennabiy: the other week when I ran it, yes. It used a ENV $*something*_MIRROR i think.
15:23
I was hard coding an IP address since by DNS was failing halfway through the process
15:24
(causing the entire build to die)
15:41
<bennabiy>
Hmm, I am going to have to see how to do this.
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16:12
<gdi2k>
alkisg, I was talking yesterday with vagrantc about screen locking. he said ltsp 5.5.2 and ldm 2.2.1 contain the LDM_PASSWORD_HASH function, which makes pam work enough for screenlockers. Ubuntu 14.04 ships with ltsp 5.5.1, but he said it may (or may not) be a simple rebuild on launchpad to get these versions built. do you think it's possible? if not, is it relatively easy to backport?
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16:13
<TheProf_>
alkisg: Thank you for your response about the 32bit clients being able to access 64 GB of ram. Is there any reason why 64 bit chroot would be needed in a typical installation or am I OK to use the 32 bit chroot for all thin clients?
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16:14
<championofcyrod1>
bennabiy: i also ran something like, 'set -x' and then when running ltsp-build-client i believe i included a flag like 'debug=true
16:14
and it showed me the variable..
16:14
<bennabiy>
gdi2k: you can go about it a couple ways. Either download your own version of the updated source, and compile it, or branch the current code base and then generate your own ppa from it, or you can use one of the ppas that already uses the latest source
16:14
<alkisg>
gdi2k: yes it's an easy process, but I'm not planning a rebuild these days, maybe a couple of months later...
16:15
<championofcyrod1>
bennabiy: http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/view/head:/server/share/ltsp/plugins/ltsp-build-client/Debian/010-debootstrap?sort=date
16:15
it's just $MIRROR i guess
16:15
<alkisg>
bennabiy can guide you on how to do it yourself :)
16:15
<bennabiy>
championofcyrod1: thank you. I did that when I initially set up the code, but I will have to do it again when I get a little time
16:15* bennabiy waves at alkisg
16:15
<alkisg>
TheProf_: for math-related apps, 64bit gives a bit more performance. Usually it just takes more RAM, so it's not significant.
16:15
Hi bennabiy
16:16
<bennabiy>
school still out for you?
16:16
<alkisg>
Yup, for 4 more days only :(
16:17
<bennabiy>
Time went by quick!
16:17
<gdi2k>
alkisg, bennabiy thanks, will look into these options and see what works for me. ppa route looks like it may be time consuming due to having to sign a code of conduct or something
16:18
(creating own ppa that is)
16:18
do you know of any ppa that has updated packages?
16:18
<bennabiy>
gdi2k: you can use my ppa, if you want, but I am about to do some testing with it
16:18
ppa:bennabiy/testing
16:18
<TheProf_>
alkisg: Thank you for the clarification -- we don't do much of that at the elementary level so I will leave it defaulted to 32 bit. It was just a weird error that it would fail on whenever I tried to build the 64 bit image.
16:18
<bennabiy>
and ppa:bennabiy/ldm-test
16:19
gdi2k: I will probably be compiling the packages into one ppa, because the patch needs both packages to be updated.
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16:19
<bennabiy>
but that is for another day.
16:19* bennabiy waves.
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16:20
<gdi2k>
bennabiy, cool, so for now I could just download the debs from each and install without issue?
16:20
<bennabiy>
should be fine.
16:20
<gdi2k>
many thanks!
16:20
<bennabiy>
you are welcome :)
16:20
<gdi2k>
will do a backup of my server first (it's a vm) then give it a go in the morning
16:20
night time here already ;)
16:20
<bennabiy>
alright!
16:22
<gdi2k>
bennabiy, from here it looks like ppa:bennabiy/testing only contains ltsp 5.5.0, but I need 5.5.2 I think
16:22
<alkisg>
There are also ltsp/ldm daily images
16:23
<bennabiy>
ah, I must not have pushed the latest changes to the ppa yet
16:23
I will build a new build today and then by the morning you should have it
16:24
<gdi2k>
bennabiy, much appreciated! I checked the daily builds, but only ltsp 5.4.6 available
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17:29
<bennabiy>
gdi2k: Just to let you know, it still says 5.5.0 but the code is updated to have the patch
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17:36
<bennabiy>
gdi2k: ppa:bennabiy/ldm-test should now contain both the ldm package and the ltsp 5.5.2
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22:11
<gdi2k>
bennabiy, excellent, thank you, will check it out this morning (tomorrow here already)
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