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


Channel log from 3 December 2011   (all times are UTC)

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00:35
<andygraybeals>
okay, at home; restating the process.
00:35
vagrantc, on the way home i thought to ask.. what do you use if you don't use ubuntu?
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00:59
<vagrantc>
andygraybeals: debian
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01:49
<andygraybeals>
debian, i've been thinking about trying that out.
01:49
btw, the client installed this time.. everything was the same, i don't know what was up.
01:50
<vagrantc>
hopefully just transient network failures
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06:03
<alkisg>
vagrantc: about r1981, once/if Yoe commits the new nbd-client.initrd, we'll need root=/root there, not root=/dev/nbd0
06:04
<vagrantc>
alkisg: how curious
06:04
<alkisg>
That's where our root is, and the stock initramfs scripts can chroot to it
06:05
We can also put nbddev=/dev/nbd0, but it's not necessary
06:05
<vagrantc>
although just mount -o move /root /rofs works as well
06:06
for both NBD and NFS and who knows what else
06:07
<alkisg>
Err I didn't get that, what does that move do?
06:07
<vagrantc>
it seems that specifying root=/dev/nbd0 and nbdroot= is a bit redundant ...
06:07
alkisg: oh, i thought you were talking about a different commit
06:07
<alkisg>
Here's the new nbd-client.initrd I proposed: https://launchpadlibrarian.net/86381563/nbd-client.initrd
06:08
It supports a host:port/path syntax
06:08
Either with nbdroot=that, or with dhcp
06:08
And, root=/root should point to our actual root. It's the same if one uses LVM over NBD or something.
06:09
If we need to, we can specify nbddev=/dev/nbd0, but we don't need to specify the device at all
06:10
Also, instead of the NBDROOT environment variable, I proposed using an NBDCLIENT wrapper, so nbd-proxy could be called from there, if some people still need that
06:11
<vagrantc>
sounds promising
06:11
<alkisg>
So, from initramfs-tools/conf.d/ltsp, we'd set that NBDCLIENT wrapper to call nbd-proxy or get lts.conf before deciding nbdroot etc,
06:11
and your init-bottom code can call the initramfs.d scripts and do the aufs/overlayfs mounting
06:13
<vagrantc>
alkisg: well, keep rocking out while i sleep :)
06:13
<alkisg>
Hehe
06:13
Good night :)
06:14* vagrantc loves distributed timezone development
06:14
<alkisg>
me too, I love it when bugs are fixed while I sleep :D
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07:29
<priyank>
hi
07:37
<alkisg>
Hello
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12:28
<andygraybeal>
hey morning
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12:29
<andygraybeal>
morning Trixboxer
12:29
Trixboxer, have you played around with elastix?
12:29
<Trixboxer>
evening andygraybeal :)
12:32
<andygraybeal>
i need some help with ltsp -- i actually want to trash what i have and start again... but that seems rediculous. this is a testing environment so it's not anything that is critical. i have ltsp running in a virtual machine and ltsp client running in a virtual machine, pxe booting. the server has two nics. the client pxe boots and loads something... the screen is filled with dots and it says 'done'. at the end. it sits there and does no
12:32
thing else - what have i done wrong?
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12:41
<muppis>
andygraybeal, can you give us a screenshot?
12:41
<andygraybeal>
for usre
12:42
<muppis>
I hate allergic reactions. Has gone 5 hours for one hour job.
12:42
<andygraybeal>
where is a good pastie for images?
12:42
imagebin?
12:42
<muppis>
imgur.com
12:42
<andygraybeal>
cool
12:44
http://imgur.com/Hssnu <--- think that worked.
12:45
<muppis>
Uh oh.. Really doesn't look good at all. Runned ltsp-update-kernels ?
12:45
<andygraybeal>
nawp.
12:45
<muppis>
First to try.
12:46
If you want rebuild everything, just remove everything under /opt/ltsp and run ltsp-build-client with proper params, if needed.
12:46
<andygraybeal>
okay, nada ... it's totally something i've done -- i'm inclined to start over from scratch and documnet everything i do.
12:47
well.. i mean reinstall the server o/s also
12:47
but i can ltsp-build-client first to try
12:48
is there a good set of instructions to follow? https://help.ubuntu.com/community/UbuntuLTSP <-- i go here .... but nothing is really appropriate.
12:48
and the ltsp.pdf doc doesn't spell it out eithre.
12:49
<muppis>
That QuickInstall page is good to follow to getting started.
12:49
<andygraybeal>
yea, but ....
12:50
i dunno there's a lot more too it -- i'll come up with my own docs and post if i can get this to work.
12:50
imma start from scratch
12:50
delete machine, and re-install completley
12:50
write everything down and screen shot when appropriate.
12:51
<muppis>
Phew. I should also dovument what I've done and what I'm doing with ltsp.
12:52
I've done HTPC version and now I'm doing virtualization enviroment balanced and monitored by pacemaker.
12:52
<andygraybeal>
ah... HTPC =? .. is yuor virt KVM/Libvirt by any chance? and what is pacemaker? you sound like a rock star!
12:53
<muppis>
Home theather pc, simply running XBMC in client.
12:53
<andygraybeal>
aah ok
12:53
<muppis>
Yes, virtualization is based to kvm/libvirt.
12:54
<andygraybeal>
nice, your definetly my hero :)
12:55
<muppis>
Pacemaker is piece software that monitor processess and services available in nodes and keeps them running by moving them to other hardware in failure.
12:55
piece of..
12:56
Nice to hear. HTPC was my own work, kvm/libvirt is my dayjob.
12:57
<andygraybeal>
nice
12:57
pacemaker... wow.
12:58
yea, i need to learn :)
12:58
<muppis>
andygraybeal, but when you get reinstalled drop a note. I'll continue my housekeeping for a while.
12:58
<andygraybeal>
where are you located?
12:58
<muppis>
Finland.
12:58
<andygraybeal>
aah crap long plane ride
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12:58
<muppis>
Yeah. :(
12:58
<andygraybeal>
muppis, thanks man.. yea, it'll be a few hours as it goes.
12:59
<muppis>
We have nothing but time.
13:01
<andygraybeal>
do you know off hand how to create a machine with two nics? i can do it but it'll take me some time. if you don't know off the top of your head don't worry about it -i'll look it up - but i'm using 'virt-install'
13:02
so far i got --network=bridge=bro,model=virtio .. do i have another --network switch or is the next nic appended to the one already there?
13:02
<cheche>
what is the minimun spec for a ltsp workstation?
13:03
<andygraybeal>
cheche, check out this document: http://sourceforge.net/projects/ltsp/files/Docs-Admin-Guide/LTSPManual.pdf/download -- head to chapter 4
13:04
<cheche>
thanks andygraybeal
13:04
<andygraybeal>
er.. workstation.
13:04
workstation can practilly be nothing
13:04
ah chapter 3 for clients
13:05
it depends on what you want to do - if you want to run 'fat client' mode, you need a more memory than if you wanted to run in 'thin client' mode.
13:05
<cheche>
i have got this project for at leat 3 yrs.. several PIII with 256Mb
13:05
<andygraybeal>
i recommend running 'fat client' if you can afford the machines. that way the server's memory doesn't get gobbled up.
13:05
aah those would be thin clients then.
13:05
<cheche>
jejejejejej
13:05
<andygraybeal>
you couldn't run them as fat clients.
13:06
<cheche>
the idea is to donate to a smalll villaje
13:06
<andygraybeal>
in that case, depending on how many clients you were gonna run and what apps you were gonna use.. make sure your server has plenty of memory.
13:06
cheche, that is awesome.
13:06
<cheche>
i have 7 old computers from dell
13:07
the small villaje buys just one computer and see how many clients could handle
13:07
it should be ok with just 3 clients
13:08
they only want to turn on clients navigate on the internet and then when the system restart no documents from previous session
13:08
can I install ubuntu 10.04 client or should i use ubuntu server
13:09
can I install ubuntu 10.04 client or should i use ubuntu server?
13:10
<andygraybeal>
oh start with server
13:10
<cheche>
andygraybeal: on the admin guide does not say anything about sound card
13:10
<andygraybeal>
i think it does.
13:10
<cheche>
well, no on hardware requierements
13:11
<andygraybeal>
chapter 14
13:11
<cheche>
if i use thin clients can they use their sound cards?
13:11
<andygraybeal>
oh a sound card that is compatible with linux in general
13:11
<cheche>
can they watch youtube?
13:11
<andygraybeal>
technically yes.
13:11
it might be slow if a lot of people are doing it all at once on the system.
13:12
cheche, hey man... don't listen to what i say ... wait till an uber dood is around like.. gadi or alkisg -- they are awesome and are better at these types of questions than i am.
13:12
i'm like perpetual newb
13:13
<cheche>
andygraybeal: ok sorry
13:13
<andygraybeal>
it shuold be my superhero title
13:13
oh bro, don't be sorry.. keep asking questions, and i'll keep answering as best i can -- but i don't know how much i'd trust my ansswers :)
13:13
<cheche>
andygraybeal: well i have been using linux for 13 yrs.. but i want to go in the right way on this
13:14
andygraybeal: is just that i wanted to hear from people that already had it working
13:14
<andygraybeal>
yea, yea.. keep asking. i'm just warning you about my own answers :)
13:14
i'm not as awesome as some of the amazing people in here.
13:15
<cheche>
no worries...
13:15
i am so please that you answer
13:16
i have a QuadCPu system with ubuntu 10.04 installed already..and i thought that i could use it
13:16
<andygraybeal>
yea, quadcpu is great.. is it xeon?
13:17
how much memory? and how many clients do you plan on running -- let me find the doc someone on ubuntu website about this
13:17
<cheche>
I can upgrade the memory if is needed.
13:17
<andygraybeal>
https://help.ubuntu.com/community/UbuntuLTSP/SystemRequirements
13:17
there's another sizing article
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13:45
<cheche>
the system is a core2 duo quad and 4 Gb RAM
13:47
<andygraybeal>
that sounds like a great start -- depending on how many clients you'll be running.
13:47
<cheche>
and it has a Nvidia dedicated graphic card
13:47
<andygraybeal>
i run in 'thin client' mode -- i have 7 clients.. with quad xeon and 8GB and i run out of memory :(
13:47
<cheche>
andygraybeal: I am thinging to test using a normal laptop
13:48
<andygraybeal>
er no no no single xeon, quad core
13:48
graphic card on server is no concern
13:49
<cheche>
andygraybeal: well that server is going to be used by the person that is responsible of the library
13:49
<andygraybeal>
aah okay.
13:49
sorry i didn't mean to sound pretensious. i was thinking that the server would be headless.
13:49
<cheche>
i am going to donate the thin clients, but the village has to pay for the server
13:49
andygraybeal: no worries...
13:51
andygraybeal: that is why I am asking if i can use ubuntu desktop instead of the server version
13:51
<andygraybeal>
aah.. well install server -- so you have it -- then you can do 'sudo apt-get install ubuntu-desktop'
13:51
and it will install xwindows, gnome environment
13:52
<cheche>
what about " apt-get install ltsp-server-standalone openssh-server"
13:52
<andygraybeal>
you need to do that too
13:53
i was saying ... about ubuntu-desktop ...so you the server has a 'workstation' environment
13:55
do you have Gbit network?
13:55
local area network?
13:55
how many clients again?
13:57
<cheche>
andygraybeal: I have a 10/100 network... the thin clients have a 10/100 card
13:57
andygraybeal: maybe even just 10
13:57
andygraybeal: maybe even just 10mb
13:57
<andygraybeal>
that might be an issue ... you should hear back from one of the uber doods here. i think that might be a problem.
13:57
<cheche>
andygraybeal: i can buy a 1GB switch that is not a problem
13:58
<andygraybeal>
how many clients are you going to run ?
13:58
<cheche>
possibly 3/4
13:58
<andygraybeal>
aah.. only 3 or 4?
13:58
<cheche>
andygraybeal: yes
13:59
i have 7 units.. but they does not needd tthat many
13:59
<andygraybeal>
ah then.. you might be able to get away with 100mbit
13:59
<cheche>
the server has a 1gb card, but the thin clients does not.
14:03
<andygraybeal>
i think that's probably fine
14:09
alkisg : hey i think on this page: https://help.ubuntu.com/community/UbuntuLTSP/FatClients -- that the "Reenabling NBD compression" paragraph should come after the "Running ltsp-build-client" - i don't really know whether it should or not but it seems like it should ... ie.. you build the client then you can compress the image file? i dunno man - i'm just letting you know.
14:17
<cheche>
andygraybeal: still waiting for ltsp-build-client to finish
14:17
<andygraybeal>
me too bro :)
14:18
it takes a while
14:18
i've done it 3 times since yesterday... (i'm fucking around with a test environment.. trying to learn how to make my setup better)
14:20
cheche, if you don't know about drbd or pacemaker read about these things: http://www.clusterlabs.org/ http://www.drbd.org/ i nthe meanwhile, that is what i'm doing :P
14:20
<cheche>
ups... it just finish
14:21
<andygraybeal>
one day i will conquer drbd, heartbeat, pacemaker, ldap... i will be king.
14:21
i have won two battles against ldap... otherwise i've been totally obliterated.
14:21
<cheche>
andygraybeal: then you will tell people around and noone knows what are you talking about.
14:22
<andygraybeal>
that is the story for all of us.
14:22
my build is still runnning
14:23
it will be prolly for the next hour or something rediculous
14:23
<ogra_>
if you do that often you should use something like approx ;)
14:23
or apt-cacher-ng
14:24
(that way your builds will only be limited by the speed of your disk)
14:24
<cheche>
*time to eat* 2nd round later :-)
14:24
<andygraybeal>
ogra_, nice.. i've never heard of those
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14:31
<andygraybeal>
greetings, alkisg i have found what i think is an error in the order of documentation in a page -- if you are there and read your irc history i posted it -- i can re-post it again if you like
14:32
<alkisg>
andygraybeal: many people change that page... I think when I originally wrote that paragraph, it was after the ltsp-build-client step
14:33
<andygraybeal>
*nods
14:33
<alkisg>
But anyway it doesn't matter much, it'll take effect on the next ltsp-update-image anyway
14:33
<andygraybeal>
okay awesom.
14:33
<alkisg>
If you find obvious errors, just go ahead and edit it yourself too
14:33
<andygraybeal>
yea, will do. i am afraid to change anything because of my apparent lack of skills
14:33
but yes, will do.
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15:11
<muppis>
andygraybeal, if you haven't yet got answer about two nic in virtual then yes, just add another network option.
15:11
<andygraybeal>
muppis, got it thanks man.
15:11
i shuo9ld have said something
15:12
<muppis>
Got server running already?
15:13
<andygraybeal>
still building the client
15:13
i think i'm on the road to success though.. none the less.
15:14
muppis, reading abuot this drbd, etc... is inspiring.
15:14
<muppis>
andygraybeal, it is and it also endless swap, so to speak.
15:14
<andygraybeal>
swap.... as memory? or
15:15
<muppis>
About possibilites.
15:15
<andygraybeal>
yea :)
15:19
<cheche>
i am impress just a couple of commands that it works. plug a laptop from the net and bootups a ubuntu login.. nice...
15:19
*i have not idea of the password*
15:19
but still I am very impress
15:19
<muppis>
cheche, by default uses same accounts as defined in server.
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15:21
<cheche>
muppis: i got an error that is not able to login.. running lts-update-sshkeys lts-update-image to see if that resolve the issue
15:21
<muppis>
-sshkeys should be enough.
15:23
<andygraybeal>
i don't necessarily want a cluster for lots of power, i just want it for availability/redundancy
15:23
<cheche>
well did both and works...
15:23
*ok.siesta time* 3nd round later :-)
15:24
<andygraybeal>
nice work cheche :)
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15:25
<muppis>
andygraybeal, I'm doing it for availability also. When you get hands dirty with it, feel free join to #linux-ha :)
15:25
<andygraybeal>
nice
15:33
muppis, how do you make a switch redundant?
15:33
i can't imagine... dual nics and twice the cables...
15:34
but if you say the word.. it will be done.
15:35
my switch is capable of having redundant power supplies.. but the switch itself.. i can't imagine.
15:37
<muppis>
andygraybeal, that can be weakest point. But then you can think if switch fails, does it really matter do you have backup for that or not? Haven't heard about switch failure without any symptoms before full broke down.
15:38
<andygraybeal>
okay, so you may be saying that realistically -- tell tale signs would appear and there isn't a need to have twice the cabling and twice the nics on every device.
15:38
this would be incredibly sick, though.
15:38
<muppis>
Indeed.
15:40
<andygraybeal>
what handles an entire network failover ? (say you did the unrealistic and had two switches, two nics and twice the wiring)
15:44
<muppis>
WEll, I planned that, but haven't yet tested does that really works. As in my set up that could be possible, because HP DL380 G7's got 4 nics by default and mostly all are not needed, so then can be easily bond/trunk for redundancy.
15:45
<andygraybeal>
aaah yuo use trunking for reduncancy
15:45
nice
15:48
ahh.. spanning tree loops.. my head can't handle this.
15:51
that stuff gets fractal in my mind real quick
15:52
<muppis>
If you keep everything only duplicated, it wont get complicated. :)
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16:43
<andygraybeal>
muppis, what do you do about client machines? do they have two nics and two cables also?
16:43
idon't know why i can't get over this. it's totally wicked.
16:45
<muppis>
andygraybeal, yes, but as is, because booting is not possible otherwise.
16:45
<andygraybeal>
or rather, should you have two client machines?
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16:50
<andygraybeal>
muppis, hmm why isn't booting possible with only one cable?
16:51
<muppis>
andygraybeal, I meant it not possible in bonded nics. Connections freaks out when topology changes while in use.
16:52
<andygraybeal>
hmm okay. your knowledge is wonderful.
16:53
<muppis>
And I think I'm just average guy with this.
16:53
<andygraybeal>
don't worry, i understand where i am with this :) we won't mention it.
16:53
<muppis>
:D
16:54
<andygraybeal>
it would be sweet to be able to swap hardware out and keep going
16:54
we could have like swap parties.. and just run around the room.
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16:55
<muppis>
It is possible, if kernel doesn't get info about that swap.
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17:00
<andygraybeal>
do you run your kvm's without disk cache?
17:00
i was reading that drbd requires it to be real.
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17:04
<muppis>
drbd and kvm's are runned totally different machines. KVM uses iSCSI to access disks.
17:13
<andygraybeal>
muppis, stop throwing my world theories for a spin.
17:13
why don't you run your kvm's on drbd?
17:15
<muppis>
For fault tolerance. It is possible throw running kvm to other machine when using iSCSI.
17:15
<andygraybeal>
wow.
17:16
<vagrantc>
hot failover?
17:16
<muppis>
Yes.
17:18
<andygraybeal>
what hardware do you use... maybe i can better understand it if i can see the physical things.
17:19
<muppis>
All machines are HP DL380 from G5 to G7.
17:20
G5's only con is having only two nic's onboard, otherwise they are mostly same as G6 and G7.
17:20
<andygraybeal>
muppis, sata ?
17:20
<muppis>
SAS
17:20
<andygraybeal>
nice
17:21
<muppis>
But when using ltsp as base, kvm hosts doesn't need disks at all.
17:21
So only diskspace is in drbd machines and used over iSCSI. :)
17:21
<andygraybeal>
hmm.. hah yes, and the world is spherical.
17:22
<muppis>
drbd machines are replicated over 10 Gbit fiber. :)
17:22
<andygraybeal>
i cannot wrap my head around this.
17:22
this is a nice system you are working with
17:23
<muppis>
I'll try to finish my thesis at this evening, after that I can draw little chart from all of this, if you want.
17:23
<andygraybeal>
okay.. i've arrived at another issue with my systme. i have built the image. it took forever. i'm trying to boot the system.. it's taking forever.. i followed the fatclient instructions. i'here: https://help.ubuntu.com/community/UbuntuLTSP/FatClients
17:24
muppis, yes, i would like that. better yet, i should purhcase a plan ticket.
17:24
i could be your under study.
17:24
for a month or so.
17:24
<muppis>
:D
17:25
<andygraybeal>
do fat clients boot very very slowly?
17:26
<muppis>
No, they'll at same time. It's all about loading and running afotware at first time.
17:26
Software..
17:26
<andygraybeal>
well.. i must have messed up again. it's taking fooorever.
17:26
<vagrantc>
they might boot a little slower than a thin client, but it shouldn't be hugely noticeable
17:26
<andygraybeal>
building the image took forever.
17:26
yea, then this is completely wrong.
17:27
<muppis>
In thin, everything is runned at server and only X is forwared to client by default. In fat binary is first loaded to client and then runned locally.
17:27
<andygraybeal>
i understand the difference. this is my first time booting a fat client.
17:27
and it's still booting... like it's still loading..
17:28
<vagrantc>
to get to the login screen should be only slightly slower, if at all slower
17:28
<andygraybeal>
well.. can you imagine what i might have done wrong? i wrote down all the steps i took to get to this point.
17:29
aah no i ididn't my computer over heated and crashed!! omg
17:29
<vagrantc>
perhaps other issues on your server? :)
17:29
<andygraybeal>
hah.. it's my little laptop
17:29
i'm running kvm.. 4GB of ram
17:30
i don't think the fan is working fast enough
17:30
too
17:30
this is frustrating :) i thuoght i was almost there.
17:35
my image is 739M .. is this correct?
17:35
er i mean normal?
17:36
<muppis>
Yes.
17:36
<andygraybeal>
ok
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17:40
<andygraybeal>
it says it's loading /ltsp/i386/nbi.img - where is this file?
17:41
somewhere under tftp... i thikn ?
17:41
<vagrantc>
what says it's loading that?
17:41
<cheche>
so everytime that I modify /op/ltsp/i386/ I have to run ltsp-update-image right?
17:41
<andygraybeal>
vagrantc, the client machine that i'm booting.
17:41
<muppis>
cheche, yes.
17:41
<vagrantc>
andygraybeal: that's basically something for old-school etherboot ... most things should instead be loading pxelinux.0
17:41
<muppis>
andygraybeal, it should be under /var/tftboot
17:42
<vagrantc>
andygraybeal: yes, but what on the client machine says it's loading that?
17:42
<andygraybeal>
vagrantc, it is booting.
17:42
<vagrantc>
andygraybeal: there is a false positive in the initramfs where it might display that filename, but it's not actually loading it
17:42
<andygraybeal>
so it's the boot thingy
17:42
<muppis>
Isn't it still default setting in dhcpd.conf to offet that nbi.img file first instead of pxelinux.0 ?
17:42
<andygraybeal>
it appears i dont' have a /var/tftboot
17:43
<vagrantc>
or you're running etherboot (vs. gPXE or iPXE)
17:43
<muppis>
*offer
17:43
<andygraybeal>
i hope pxe
17:43
i dont' want to run bad things. i want to run the best!
17:43
<vagrantc>
muppis: that file is offered when nothing else matches
17:43
<andygraybeal>
lemme look at my dhcp
17:43
<muppis>
vagrantc, ah.
17:44
<vagrantc>
andygraybeal: more likely than not, you can comment out lines relating to nbd.img
17:44
<andygraybeal>
where does /ltsp/i386/pxelinux.0 live ?
17:44
<vagrantc>
andygraybeal: /var/lib/tftpboot
17:44
<andygraybeal>
k
17:44
<vagrantc>
(or maybe /srv/tftp/)
17:45
even newish things running etherboot still typically support PXE, it's only for really old etherboot roms that you'd need the nbi.img
17:45
<andygraybeal>
yes, ths is kvm / libvirt pxe boot
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17:46
<andygraybeal>
i do have /var/lib/tftpboot/ltsp/i386/pxelinux.0 :) i will keep looking.
17:47
lemme do the kernel up date thing
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17:53
<alkisg>
cheche: you're ok with 1 gb card for the server + 100 mbps for 7 clients, even with a laptop, just put LDM_DIRECTX=True in lts.conf
17:53
Also the alternate cd or the desktop cd are preferred, don't use the server cd
17:54
<andygraybeal>
ah really? what is wrong with the server cd?
17:54
maybe that's my probs.
17:54
<alkisg>
It doesn't have a desktop environment for the clients
17:54
You *can* install ubuntu-desktop on it, but then why not start with the other CDs, which already contain that?
17:54
<cheche>
alkisg: i did just a installation from a ubuntu-desktop and it worked like a charm
17:55
how do you achive guest sessions?
17:55
<alkisg>
cheche: right. 7 clients will be able to watch youtube, non full screen, with the server specs you said
17:55
You want the documents/settings to be erased on each login?
17:55
Or just a "login as guest" button?
17:55
<cheche>
alkisg: yes...
17:56
alkisg: document and setings erased on each login.
17:56
<alkisg>
cheche: here's one way: http://www.mail-archive.com/ltsp-discuss@lists.sourceforge.net/msg39777.html
17:56
I mailed that to the list a few months ago, there are other ways, but that's easy too
17:57
<cheche>
alkisg: i was thinking about rm -rf every night...
17:57
<alkisg>
It's better to do that on login
17:57
So that people can logoff/logon without waiting for your script to clean up,
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17:57
<alkisg>
and so that when a user logs out, you, as the admin, can still check his documents, in case he tried something funny
17:58
<andygraybeal>
ah something about gpxe needs to be loaded onto the kvm server.... i remember
17:59
<cheche>
alkisg: but I was looking for some autologin aswell
17:59
<alkisg>
cheche: that's build it in ltsp, check the lts.conf manpage
17:59
!lts.conf
17:59
<ltsp>
alkisg: lts.conf: http://manpages.ubuntu.com/lts.conf
17:59
<alkisg>
cheche: and, when someone logs off, all his settings are erased on the next autologin after 2 seconds
17:59
<cheche>
but your script assumen that you need a guess*something*
17:59
<alkisg>
So people won't need to bother about using browser private mode etc
18:00
You can name your accounts however you want them
18:00
guestXX is a good name
18:00
And you can have those automatically logged in
18:00
<cheche>
alkisg: ok
18:00
<alkisg>
You're welcome.
18:00
andygraybeal: about caching, you can run ltsp-build-client --mount-package-cache
18:01
<andygraybeal>
nice alkisg :)
18:03
hmm yes my machine is booting etherboot! uhg. :)
18:03
stupid libvirt.
18:06
<alkisg>
andygraybeal: about fat client boot speed, with 2 years old hardware, boot from pxelinux to ldm login screen = 12 seconds, starting openoffice, firefox = 2-3 seconds. It's faster than local installations, if you have gigabit + some RAM on the server.
18:06
<andygraybeal>
alkisg, yea ,something is definetly wrong.
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18:07
<andygraybeal>
i'm trying to boot a virtual machine client off of a virtual machine ltsp server. kvm/libvirt -- i'm still reading so i'm sure i did something wrong.
18:07
<alkisg>
I've no idea about kvm, but I do that all the time with virtualbox, it's quite fast
18:08
<andygraybeal>
i'm readin gthis now : https://help.ubuntu.com/community/KVM/Networking i'm sure it's something dumb.
18:08
thank you for your help / guidance.
18:08
<muppis>
andygraybeal, are you using any manager for libvirtm like virt-manager=
18:08
?
18:08
<andygraybeal>
muppis, yes, i am .
18:08
please don't hate me :)
18:09
<alkisg>
Try `iperf -s` on the server, and `iperf -c server` on the client, to measure the virtual network speed
18:09
<muppis>
andygraybeal, no I don't, I use it aswell. :=
18:09
:)
18:09
<andygraybeal>
alkisg, okay two secs.
18:09
<alkisg>
With virtio you should get 10 Gbps or so
18:09
<andygraybeal>
yea, i have been using virtio
18:09
i just switched to e1000 just to do it
18:10
and now i'm on rtl8029 just for kicks.
18:10
<muppis>
andygraybeal, but if you look at network configuration at virt-manager and you use it default as internal it does have own dhcpd which messes thing up.
18:10
<alkisg>
8029? Isn't that 10mbps?
18:10
<andygraybeal>
alkisg, just for kicks ;) yea, i just know it's slow.. it might be 100mbps
18:11
er no no no rtl8139
18:11
sorry
18:11
i was wrong
18:11
<alkisg>
OK, that's 100mbps. Because 8029 is 10 :)
18:12
100mbps is fine for 1 client too
18:12
<andygraybeal>
muppis, lemme explain
18:12
i got default which has got dhcpd on it - then i got another virtual network which has no dhcpd on it - this is the one that i've assigned the 'ltsp network' to be on -- so the dhcpd server is on the ltsp machine.
18:13
oh, also the 'ltsp network' is an 'isolated network' as far as virt-manager is concerned. the routing being done through the other interface.
18:14
muppis, i hope what i said made sense.
18:14
forwhatever reason they want to load up etherboot and not pxe at the moment.
18:17
<muppis>
andygraybeal, it makes sense.
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18:27
<alkisg>
You can change that from dhcpd.conf
18:27
<andygraybeal>
okay alkisg, maybe that's what i need to do
18:29
okay got the pxelinux.0 this time :)
18:30
edited up the dhcpd.conf
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18:36
<andygraybeal>
muppis, how does a hot failover work with the iSCSI ?
18:36
and how do you keep them synchronized?
18:37
err.. maybe better yet.. how do you not have harddrives in your kvm/libvirt machines? all your apps are running through ltsp?
18:37
.. and what kind of apps are you running on the kvm/libvirt boxes?
18:39
<muppis>
We use ltsp for flexibility for number of hosts, so to add new host just plug in and boot up with ltsp.
18:40
All settings required by kvm is set up per mac basis.
18:40
<andygraybeal>
that's pretty amazing. i'm just using it for the 'user-space'
18:41
<muppis>
In host itself, beside basic ltsp, only kvm, libvirt and open-iscsi is added.
18:42
<andygraybeal>
that is pretty hot.
18:42
what OS?
18:42
<muppis>
Ubuntu 10.04
18:42
<andygraybeal>
nice
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18:43
<andygraybeal>
so kvm, you assign it to pxe boot and don't assign a HD correct?
18:44
one day man :) one day ... maybe i'll acquire an underground bunker and a fat data pipe.
18:44
<priyank>
alkisg: hi... Actually my server IP changed... and when I tried to reboot my thin client it stuck on intravfm(I dont remember the name)
18:45
<andygraybeal>
and make this kicking hosting service :)
18:45
<priyank>
I updated ssh keys and updated Image as well
18:47
<muppis>
andygraybeal, yes, do not need HD in kvm ltsp client
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19:09
<andygraybeal>
okay.. i need some more guidance - i got the pxelinux.0 to atleast start to get loaded... it seems to hang / stall or go extremely slow when it his this point though.
19:09
like.. it never gets past it.
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19:24
<muppis>
andygraybeal, remove words quiet and splash from pxelinux.cfg/default, can be founded under same directory as pxelinux.0
19:24
<andygraybeal>
k thank you i will
19:25
<muppis>
Then just reboot client, no other fancy things needed.
19:32
<cheche>
I have set LDM_AUTOLOGIN=True but it does not auto login. Should I set on /etc/passwd ltsp20 user?
19:33
<muppis>
cheche, I think you should also define username and password used in auto login.
19:35
<cheche>
muppis: on the man page "This will attempt to log in the thin client with username = hostname and password = hostname."
19:35
<andygraybeal>
muppis, okay, i removed the 'quiet' and 'splash' ... it is doing the same thing -- all it does is : loading 192.168.133.1:/ltsp/i386/pxelinux.0 . . . . and sits there for for ever.
19:35
it keeps adding dots ... but very slowly
19:35
<cheche>
muppis: but i am a bit confuse if this need to be changed on the main system or in the chroot
19:36
<muppis>
cheche, to lts.conf
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19:44
<cheche>
shit... [example] on lts.conf should be changed to [default]
19:44
<muppis>
:)
19:55
<cheche>
I have got a stupid question. But how can I upgrade the programs for the thin clients. If I upgrade on the server should be enought?
19:56
<andygraybeal>
that's what i do
19:56
that's the beauty.
19:57
<cheche>
andygraybeal: i like ubuntu-restricted-extras so if i have on the server that is all?
19:57
<andygraybeal>
i believe it is.
19:58
<muppis>
Updating server is enough if no localapps used.
19:59
<cheche>
*ltsp blows my mind*
19:59
<andygraybeal>
:)
20:01
okay, i'm gonna start from scratch again.. i'm gonna go with the alternate cd.
20:01
<muppis>
:D
20:05
<andygraybeal>
i wondedr if i'm doing something wrong with libvirt/kvm
20:07
<cheche>
I want to switch screen saver off. shouold I modify //opt/ltsp/i386/ or the main system?
20:07
i do not want to be asked for passw3ord that the final user ignores...
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20:10
<muppis>
cheche, check X_BLANKING from lts.conf manual
20:11
<cheche>
http://casa.apertus.es/blog/2010/06/08/desactivar-contrasena-en-el-salvapantallas-ubuntu-10-04/
20:11
i was able to do so with a command line
20:12
*diner time with family in lawn*
20:13
<muppis>
Heh. I don't remember when that one was last time. Maybe 3 years ago.
20:15
<andygraybeal>
alright, 3 minutes left on this alternate cd download.. and then i'm headed home -- i'll catch you guys when i get home.
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