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


Channel log from 2 September 2014   (all times are UTC)

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01:15
<bennabiy>
vagrantc: I am hard setting the packages, only if someone is on a mint system, and wanting to set up a mint chroot, because without those packages, it is just an ubuntu chroot. It preserves someone from running into the issue of using a file to set packages and ruining their mint chroot and wondering why it didn't work
01:16
I ran into it for myself. It does not cancel out someone wanting to set custom packages, but sets requirements if someone wants a mint chroot. Perhaps it would help if those required packages were their own stage, but for now, this is working well
01:17
basically, the packages in mints repo for apturl and such have been patched for mint to allow for the packages to not conflict, but it requires that the preferences and apt priority to be the same as in a typical mint install
01:17
I will be back tomorrow if you have more questions
01:17
night!
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01:24
<vagrantc>
bennabiy: well, i still don't understand why debootstrap is pulling in the gtk app...
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10:46
<SteveTech>
I am thinking of starting a new LTSP project and would like some advice on how I can display a windows session on a Linux Thin Client.
10:46
Can any help please?
10:48
<work_alkisg>
Do you have a windows server installation somewhere?
10:49
<SteveTech>
Yes, and to save cost of Windows CALS it would be good to use Thin Clients.
10:51
<work_alkisg>
With ltsp it's very easy, just running ltsp-build-client and then configuring 1 line in lts.conf,
10:51
SCREEN_07=xfreerdp <params>
10:51
Start with the usual ltsp guides, and then once your clients boot, either google or ask for that single line
10:54
<SteveTech>
It would be nice to see a diagram of a Linux Thin Client and associated Terminal Server but I assume that the best way forward is to get stuck in and actually build these things.
10:55
<work_alkisg>
Yes, normally you get do it in less that 30 minutes so there's no point in asking 2 hours about it (not you, in general)
10:56
<SteveTech>
OK, I'll give it a go. Thanks for your help.
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11:18
<teknomen>
ben nabiy, thank you for the 001-set-mint-dist path.. i'm trying it at the moment... yesterday the ltsp-build-client didn't work
11:19
patch i mean
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11:52
<bennabiy>
vagrantc: It is trying in the late packages, not debootstrap
11:52
basically, the apt priority needs to give preference to the linuxmint repository, otherwise there are conflicts in packages.
11:54
mint-meta-core depends on mintsources, which depends on mintwelcome, which has dependencies on synaptic etc, which depends on apturl which depends on system-properties-gtk in ubuntu, but not in mint
11:54
so the apturl from linuxmint needs to be pulled
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12:17
<skyprox>
hi all! How started ltdp-server on centos 7?
12:17
is who did it?
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12:19
<skyprox>
I have problem dracut, ltsp version 5.4.5-22 from centos 6.5 very good compiled to epel-7, but if pxe boot machine i have error
12:19
dracut: FATAL: Don't know how to handle 'root=dhcp'
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12:36
<skyprox>
how started LTSP on Centos 7? It's real?
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13:03
<JuJuBee>
How do I copy the contents of a fresh install on HD to the ltsp server to be used for new image? Anything special I need to do?
13:32
<skyprox>
I have problem parameter root=dhcp in config file pxelinux.cfg/default
13:32
dracut give me error
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13:37
<ScissorHill>
Hi everyone. I'm looking for some help on LTSP.
13:39
<skyprox>
I'm listening to
13:39
hi
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13:43
<Nemno76>
skyprox: i'm trying to get ltsp working myself. Does the client machine fetch the pxelinux.cfg?
13:45
skyprox: you should see somthing like http://youtu.be/s1cguYmZ3-c?t=12m20s
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13:46
<JuJuBee>
Hyperbyte: You around?
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14:06
<skyprox>
after ltsp-build-client
14:06
14:06
http://pastebin.com/iwHwkeAi
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15:04
<Hyperbyte>
JuJuBee, hi!
15:04
<JuJuBee>
Hi Hyperbyte
15:05
I am trying to update my image. I forgot the process for copying a fresh install on local HD to the server to use for image
15:10
Also, in var-lib-tftpboot-ltsp-amd vmlinuz links to vmlinuz-3.5.0-21-generic but I only see vmlinuz-3.13.0-24-generic
15:10
I am trying to upgrade to ubuntu 14.04
15:10
for the clients anyway. Will deal with server another day
15:18
Hyperbyte: any help would be appreciated.
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15:25
<bennabiy>
vagrantc: welcome!
15:26* vagrantc waves
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15:37
<Hyperbyte>
JuJuBee, update your image copying a fresh install on local HD to the server?
15:37
I'm not sure?
15:39
<JuJuBee>
I have a computer I did a fresh install on. You told me once that I could copy the files from the fresh install to the server and then update keys/kernels/image and use the new OS
15:39
<Hyperbyte>
You sure it was me?
15:40
<JuJuBee>
Not 100%, but you have given me most of the support over the last 2 years
15:41
<bennabiy>
vagrantc: did you see my responses?
15:42
<JuJuBee>
I think the last time I asked about this was because I had a program with a gui install I wanted to add to the image
15:45
<vagrantc>
bennabiy: not sure that i did
15:45
JuJuBee: sure it wasn't alkisg?
15:47
copying the chroot can be a little error prone- there are all sorts of permissions and quirkly little issues, but it is of course possible. much easier to copy a generated NBD image.
15:47
<bennabiy>
basically, it is mint-meta-core which pulls the deps on software-properties-gtk by : mint-meta-core ->mintsources -> mintwelcome ->...which pulls apturl which in Ubuntu ->software-properties-gtk but the linuxmint repository has a patched version of apturl which does not depend on it
15:48
<JuJuBee>
vagrantc: it might have been
15:49
vagrantc: are there any directions/ help docs on this?
15:50
My server is 12.04 but I want clients to use 14.04 and have some apps that use gui install
15:58
<vagrantc>
bennabiy: it seems like all you would really need is the mint artwork for a thin client, no?
15:58
bennabiy: only a fat client would need all that other stuff
15:58
<bennabiy>
fat client or localapps
15:59
and the keyring
16:00
<vagrantc>
right, the keyring.
16:01
bennabiy: well, hrmpf.
16:02
bennabiy: it seems like a really messy way to do this ... essentially mint is an unofficial ubuntu variant, and these workarounds are kind of ugly.
16:02
<bennabiy>
The other packages are to generate as much of a barebones "mint" chroot as possible
16:03
<vagrantc>
bennabiy: essentially, i've tended to try for early-packages/late-packages to have sane defaults, but allow the user to override them easily ... your code doesn't allow the user that flexibility.
16:03
largely because it doesn't sound like there's a sane default
16:04
<bennabiy>
The sane default is that someone wants to generate a mint chroot
16:04
It is quite surprising how many people have been seeking support since the switch to mint 17. There are more and more people using it
16:05
Granted a lot of people are using dnsmasq and such which I have yet to use with ltsp, so I can only help them so much.
16:05
I probably should try it out just to get familiar, but I do not have the time right now
16:06
vagrantc: Really, it could go back to using those defaults with an override possible
16:06* vagrantc is convinced mint should bite the bullet and do the work required to become a fully fledged distro of their own right, or work on getting properly integrated into ubuntu
16:07
<bennabiy>
just someone might use a file and not realize that they need those packages to make the rest work
16:08
<JuJuBee>
vagrantc: the nbd images are the compressed ones in /opt/ltsp/image ?
16:09
<vagrantc>
bennabiy: so, the problem boils down to... one of the packages that makes it "mint" pulls in dependencies on packages which need pinning in order to not pull in the ubuntu packages of the same name?
16:09
<bennabiy>
vagrantc: in essence, it is the exact same thing that mint does
16:10
<vagrantc>
bennabiy: what creates the pinning files and apt.conf.d files that you're copying?
16:10
<bennabiy>
mint
16:10
installer
16:10
<vagrantc>
JuJuBee: typically squashfs, yes.
16:11
bennabiy: has the result stayed the same across releases?
16:11
<bennabiy>
vagrantc: result of?
16:11
<vagrantc>
bennabiy: the pinning/apt.conf files generated
16:12
<bennabiy>
yes, it is a repository pinning, not per file
16:12
basically just giving preference that if the file has been patched on the mint side, then use it
16:12
<vagrantc>
bennabiy: it would seem a little cleaner to just create the files than to blindly copy whatever might be in there.
16:12
bennabiy: whatever might happen to be on the server.
16:13
<bennabiy>
I thought about that
16:13
the apt.conf.d files might have made sleight changes between pre 14.04 and 14.04
16:14* vagrantc blinks
16:16
<bennabiy>
I am checking
16:16
<vagrantc>
what does it create in apt.conf.d ?
16:20
<bennabiy>
one second
16:21* vagrantc wonders why they don't ship these changes in a package
16:23
<bennabiy>
vagrantc: http://pastebin.mozilla.org/6283177
16:23
filenames and then the contents
16:24
<vagrantc>
they don't install recommends?
16:24* vagrantc sighs
16:24
<bennabiy>
I think that changed in 16
16:26
vagrantc: I think it comes down to this... LinuxMint might rub many people the wrong way about how it does things, but someone chooses to use it, and wants it to be their system. I am trying to support that goal.
16:26
<vagrantc>
bennabiy: so, many of those files come from other packages
16:27
bennabiy: yes, and i appreciate that goal ... but it is hard for me to sign off on things that seem to break best practices.
16:28
bennabiy: so i'm torn
16:28* bennabiy was happy to have a LinuxMint folder to not have to mess with the Ubuntu code...
16:32
<bennabiy>
I can do a fresh install on a system, before anything gets installed except the base system, and then copy the files from the /etc/apt directory, and then have the script write those files to the chroot.
16:32
then if someone wants to add other files and such, they can modify their chroot
16:32
<vagrantc>
bennabiy: i know several of those files are actually part of packages, and not things that mint writes
16:33
<bennabiy>
that is why I suggest a fresh install to get the template of "required files and contents" to make a base system
16:33
that way we are not copying blindly, and we are not polluting with something unneeded.
16:33
<vagrantc>
bennabiy: but you'll still have files from other packages in a base system
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16:33
<vagrantc>
bennabiy: or, you selectively copy the files that are known to be created by mint.
16:34
bennabiy: i.e. just like you're doing now, but with a more restrictive glob
16:34
<bennabiy>
and have a default to put in place if the files are not there?
16:34
<vagrantc>
sure
16:35
but if the mint devs could ship these files in a package... then it would be really simple.
16:35
probably less work for them as well.
16:36
<bennabiy>
I will suggest that
16:37
<vagrantc>
and then it could be independent of release ... i.e. mint 16 will install a version appropriate to mint 16 ...
16:39
there might be a technical reason it wouldn't work, but if you could make that package a priority such that it gets installed early enough
16:39
maybe it's autogenerated at initial install ... so the kernel versions might be tied to when you install
16:40
rather than hard-coded...
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17:13* bennabiy can only suggest things to them...
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18:20
<gothaggis>
hello - is there a way to setup thunderbird (and firefoxs) prefs.js file in /etc/skel so server settings are already populated for new users? it seems those files are in random directory names so not quite sure how it would work
18:21
<Hyperbyte>
JuJuBee, hey, sorry for not responding very well
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18:31
<gothaggis>
it seems like the solution might be to just copy a user.js file into the profile directory at login
18:32
<championofcyrodi>
hmmm trying to build a fat client on k12linux packages for centos 6.5... the --arch=x86_64 doesnt seem to be working. a prompt keeps showing up verifying the i386 name usage
18:50
<||cw>
gothaggis: i think you want /usr/lib/firefox/defaults/pref/ and/or /etc/firefox*
18:53
<JuJuBee>
Hyperbyte: I understand. It was probably alksig that gave me the howto...
18:54
I seem to remember that it was not as simple as rsync to the server update-image... and voila
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19:35
<bennabiy>
ok, I will be updating my code tomorrow evening to clean up the "glob"
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20:15
<championofcyrodi>
starting to see why most LTSP users go w/ Ubuntu...
20:15
got the client chroot built... now trying to figure out the dhcp/tftpd/nbd configuration for centos
20:19
<||cw>
championofcyrodi: do you have an existing dhcp+dns, or do you have 2 nics in the server and your thin clients on a separate lan?
20:20
<championofcyrodi>
I'm documenting the process so i can replicate on a LAN that has existing DHCP+DNS, and the server will have 1 NIC for tftpd+nbd/sshfs
20:21
so right now im using a VM with 2 NICs
20:21
1 for NAT to provide internet connection for getting packages...
20:21
and 1 for running dhcp. then testing with a second VM
20:21
if it all works out, i'll be trying it on the real hardware
20:24
basically, i'm trying to start dhcp+tftpd+nbd on eth1
20:25
after the chroot built, it said that it was configuring the system to support the 'client boot over network'
20:25
then it was done, and it looks like none of the services are running.
20:26
so i'm trying to find a working dhcp.conf
20:26
dhcpd.conf? something like that... maybe i'll snag the one from the ubuntu ltsp server and modify it
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20:40
<Nemno76>
looking for an dnsmasq expert.
20:41
<championofcyrodi>
heh, i found it.
20:42
<Nemno76>
i'm forcing to send dhcp-option=66,192.168.1.200 in the /etc/dnsmasq.conf but when i start dnsmasq -d it won't send it
20:43
im running the client in virtualbox and hit <ctr><b> to get a commandline.. after that i do dhcp
20:44
now the dnsmasq-d is showing the request without the dhcp-option.
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21:29
<gothaggis>
just installed a new ltsp server running 14.04...bootetd up a thin client, it gets the image, but after i enter my username + password, it goes to a black screen and then back to the login page. i don't see anything in auth.log and the only thing in syslog is after it assigns the image it says 'Can't open authorization file /etc/ltsp/nbd-server.allow (no such file or directory) but i'm not sure that is even related
21:29
i can ssh into the server just fine
21:33
(i am using winbind/samba active directory auth)
21:36
<||cw>
nbd-server.allow isn't required, all are allowed if it's missing, unless there's a deny file
21:36
gothaggis: you might need to change to a desktop that's not Unity
21:37
<gothaggis>
yeah i'm using fluxbox
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21:51
<gothaggis>
basically everytime this happens, this is what I see in the logs:
21:51
(after the can't open auth file)
21:52
nbd_server[1493]: Starting to serve
21:52
nbd_server[1493]: Size of exported file/device is 805793792
21:52
nbd_server[1493]: Disconnect request received.
21:52
nbd_server[1048]: Child exited with 0
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21:53
<vagrantc>
gothaggis: that's just checking if a new image is available
21:53
gothaggis: my guess is you've got outdated ssh keys
21:54
gothaggis: it probably has the wrong ssh keys in your image, or is trying to connect to your router instead of the ltsp server.
21:54
<gothaggis>
yeah i ran ltsp-update-sshkeys before updating the image
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22:08
<gdi2k>
hi all, since switching to LTSP 14.04 we've had a lot of crashes on clients due to low memory issues when swap is used. we are using fat clients each with 2 GB RAM and 8 GB of NBD swap and swappiness set to 10. I can see clients suddenly consume 50 mb/s on the network for very long durations, then they commonly crash. we have quite a few users affected by this and they need to reboot frequently
22:08
side note: it is ridiculous how much memory chrome and firefox consume with just a few tabs open on things like google docs and office 365, but that's for another channel!
22:11
(I should say Xubuntu 14.04, not LTSP 14.04)
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