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


Channel log from 15 March 2012   (all times are UTC)

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01:56
<Zarrsh>
Hello, I've been doing some research the past about thin clients and have come across ltsp and have been reading various articles about it.
01:57
Let me explain my goal, to have a very light distro installed locally on a "thin-client" that once booted automatically launches an RDP session into a Windows terminal server.
01:58
I was reading how LTSP version 5 also supports local storage(flash drives) which is very nice as well
01:59
So my question is what distro would someone recommend for the client side, that has a small enough footprint and be capable of installing ltsp on?
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04:33
<jvin>
Zarrsh, clients should boot off PXE/BOOTP try out edubuntu.org live dvd with ltsp option to test hardware.
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07:17
<srdjo>
good morning all
07:18
alkisg, what might be the reason for client not to show in epoptes
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07:24
<alkisg>
srdjo: it was working before, and it stopped working now?
07:24
Or it never worked?
07:25
In 90% of the cases, it's a missing or mismatched certificate
07:25
<srdjo>
all clients are ok except one
07:25
user logs in, and it is nowhere on epoptes
07:26
<alkisg>
Do you see the clients before login?
07:26
<srdjo>
not this one
07:26
i see all the oters
07:26
others
07:26
<alkisg>
That's _before_ they login, right?
07:26
<srdjo>
before and after
07:26
<alkisg>
As green or blue monitor icons
07:26
Are they fat clients or thin?
07:27
<srdjo>
they should all be fat but I must check this one thats not showing up
07:28
<alkisg>
Can you login on that client, and run epoptes-client from a console manually?
07:28
And check if you get any errors?
07:30
<srdjo>
it stays on connecting to server...
07:31
<alkisg>
OK, stop it, and do this:
07:31
md5sum /etc/epoptes/server.crt
07:31
Both on your server and on that client
07:31
And see if it matches
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07:35
<asmok>
alkisg: have a time look at this question: http://www.mail-archive.com/ltsp-discuss@lists.sourceforge.net/msg40264.html
07:35
<srdjo>
they are both the same
07:35
<alkisg>
asmok: I was just reading it in my mailbox :)
07:35
<asmok>
about dnsmasq and resolvconf - i do not get it to work
07:35
yes i know - just kicking ;-)
07:36
<alkisg>
I'm not the correct person to ask abouto resolvconf though, probably stgraber is
07:36
Either file a bug in launchpad about the problem, or try to find him here later on
07:36
<asmok>
ok i file a bug, thank you
07:36
<alkisg>
asmok: can you put the output of `ps aux` of a client to pastebin?
07:37
Which of resolvconf / network-manager are running? none, one or both?
07:38
<asmok>
here - http://pastebin.com/mL3RKA9b
07:39
<alkisg>
asmok: the local ps, not the server one
07:39
!localxterm
07:39
<ltsp>
alkisg: localxterm: Any applications that you launch on a thin client actually run on the server. However, if in a client you run 'ltsp-localapps xterm', a local xterm will open, and any commands that you enter there will be executed locally on the client.
07:39
<asmok>
sorry
07:41
<alkisg>
And also, if you can, the output of this one, again in the localxterm: ls /etc/init/*network* /etc/init/resolv*
07:41
<asmok>
ok
07:46
ps ax local - http://pastebin.com/RFvkDt8p
07:47
ls - http://pastebin.com/nwrEkFJf
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07:48
<alkisg>
Can you put this in your lts.conf, and then reboot the client?
07:48
RM_SYSTEM_SERVICES=resolvconf
07:48
See if that fixes the problem
07:48
<asmok>
ok
07:54
no it did not for thin client
07:54
<alkisg>
OK... yeah then just file a bug report about it:
07:54
!ubuntu-bug
07:54
<ltsp>
alkisg: ubuntu-bug: To file a bug report for Ubuntu LTSP, go to https://bugs.launchpad.net/ubuntu/+source/ltsp
07:54
<asmok>
ok
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07:56
<elias_a>
asmok: Nice to meet you, as always :D
07:57
<asmok>
well, i'm here only when i find something bad ;-) not really chatting guy ;-)
07:58
<alkisg>
asmok: also if your chroot hasn't been updated for weeks, verify that the problem is there if you upgrade it too
07:58
<elias_a>
asmok: I know that. Just wanted to say hello and cheer our national hero :)
07:59
<asmok>
;-)
07:59
alkisg: ok i update everything now and then file a bug
08:00
<alkisg>
Nice
08:01
<elias_a>
alkisg: Would you probably have use for FLOSS school ERP?
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08:14
<alkisg>
elias_a: nah, we're not using ERPs here
08:17
<srdjo>
alkisg, I tested the server.crt on client and server and they are both the same
08:17
<elias_a>
alkisg: Ok. I will send you info in any case when we the package ready made.
08:19
<asmok>
here is a filed bug: https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/955785
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08:20
<asmok>
alkisg: i test google crome as a local app, cromium is in server side, just a note
08:26
<alkisg>
asmok: how do you send your dns server to the clients?
08:26
From the dnsmasq configuration?
08:26
Or from lts.conf?
08:28
srdjo: what's the output of this command, if you run it in your problematic client? socat openssl-connect:server:789,cafile=/etc/epoptes/server.crt EXEC:bash
08:29
<asmok>
i followed your howto, so there is ltsp.conf for /etc/dnsmasq.d/ - http://pastebin.com/rtKd52rN
08:30
i do not have anywhere else dns records for thin client?
08:33
<alkisg>
asmok: is dnsmasq working as a proxydhcp or as a regular dhcp server?
08:34
I.e. do you have a router as a dhcp server in the same subnet/.
08:34
?
08:34
dhcp-range=192.168.100.10,proxy
08:34
<asmok>
i have a router
08:34
as a dhcp server
08:34
<alkisg>
==> that means that dnsmasq is NOT responsible for sending dns info to the clients
08:35
<asmok>
who is?
08:35
<alkisg>
Your router. Are you also using ipappend 3?
08:35
<asmok>
yes
08:35
<alkisg>
Then your lts.conf is
08:35
Since your client essentially isn't using dhcp
08:35
(after the initial pxe request)
08:35
So you need DNS_SERVER=xxx in your lts.conf
08:36
<asmok>
ok
08:36
i try that
08:36
<alkisg>
That's what I have here too, it works fine. So there's no bug so far.
08:37
<asmok>
but there is bug for server itself? it has no dns services?
08:37
<alkisg>
I didn't understand that, say more...
08:38
<asmok>
i have static interface, one nic eth0 with dns-nameservers - no go
08:39
i have /etc/resolvconf/resolv.conf.d/base filled with two nameservers - no go
08:40
ltsp server is going anywhere but i can ping ip numbers?
08:41
<alkisg>
Ah, ok, no idea there, you'd need to ask in #ubuntu or talk to stgraber directly or file a bug in ubuntu etc, not ltsp related
08:41
I'm not using resolvconf, I commented it out in my network-manager configuration
08:42
<asmok>
so tell me what you got?
08:42
<alkisg>
$ grep dns /etc/NetworkManager/NetworkManager.conf
08:42
#dns=dnsmasq
08:42
<asmok>
is that all?
08:42
<alkisg>
That disables resolvconf
08:42
That's what stgraber's blog said, yes
08:42
It works for me
08:43
<asmok>
where is dns records then? do you have static /etc/resolv.conf, not linked one?
08:43
<alkisg>
It's generated by network-manager
08:44
<asmok>
from router?
08:44
<alkisg>
Hmm let me see...
08:45
Hmm no, the info from network-manager went to /etc/resolvconf/resolv.conf.d/original
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08:45
<alkisg>
So I'm using resolvconf but not the new local dnsmasq thing
08:46
<asmok>
now i not follow - old dnsmasq for 10.04?
08:46
<alkisg>
asmok, on your server, what's the output of this? ps -fC dnsmasq
08:46
<asmok>
ok
08:47
root@lubuntu:~# ps -fC dnsmasq
08:47
UID PID PPID C STIME TTY TIME CMD
08:47
dnsmasq 1101 1 0 10:12 ? 00:00:00 /usr/sbin/dnsmasq -x /var/run/dnsmasq/dnsmasq.pid -u dnsmasq -r /var/run/dnsmasq/resolv.conf -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,.dpkg-new
08:48
<alkisg>
And what do you have in /etc/resolvconf/resolv.conf.d/original ?
08:48
<asmok>
well, nothing, just base is filled now
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08:49
<alkisg>
Mine has the data from network manager there
08:49
Anyway, gotta go for now. If you're using dnsmasq in proxydhcp mode in many schools, you might be interested in the new ltsp-server-dnsmasq package that I'll develop
08:50
bbl
08:50
<asmok>
ok now i think i have no network-manager, i used to purge it, but maybe i now need it for 12.04?
08:51
<alkisg>
Maybe. I always keep network manager unless I want to do some advanced stuff that it doesn't support, like bonding.
08:51
<asmok>
i do because i do setup for Mexico and it has to just work for next five years in city/jungle
08:52
ok i install network-manager and continue with that
08:52
<alkisg>
ok, talk to you another time, bye
08:52
<asmok>
alkisg: thank you once again
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10:12
<asmok>
alkisg: i do not get it. Here is pastebin for conf files: http://pastebin.com/MNZDHt01
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10:17
<andygraybeal>
good morning :)
10:20
<Hyperbyte>
Hey Andy!
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11:09
<asmok>
alkisg: one more thing - if i put right nameservers in chroot /etc/resolvconf/resolv.conf.d/base and make new image, then tc do dns right way and keep them
11:10
now i hammer server itself with cron once a minute - Mar 15 13:08:01 lubuntu CRON[4983]: (root) CMD (resolv-update.sh)
11:10
so resolvconf really hate dnsmasq or vice versa
11:11
but in chroot is no dnsmasq so resolvconf works i think
11:11
<srdjo>
does anyone have any experience with firefox anf chrome running out of memory in ltsp clients ?
11:12
<asmok>
anyway let's wait what St. Graber will say ;-)
11:12
bye have to go
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11:27
<alkisg>
asmok: you are not using network manager, that's the problem, you need to remove the declaration from /etc/network/interfaces
11:27
Not ltsp related at all
11:30
<andygraybeal>
Hyperbyte, what'r you up to this morning?
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11:48
<Hyperbyte>
andygraybeal, not much actually
11:48
But don't tell my boss!
11:49
<andygraybeal>
:)
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12:17
<jg>
After standard install client isn't getting dhcp from server. ltsp install script gave an 'all ok' when it finished. how to check/get dhcp operating? Server running on Lubuntu 11.10.
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12:36
<Hyperbyte>
jg, hi!
12:37
Type 'service isc-dhcp-server status'
12:37
Does it say "dhcpd is not running"?
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12:58
<Hyperbyte>
jg, bye!
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13:34
<jg>
Hyperbyte, I guess it's not running: "Status of ISC DHCP server: dhcpd is not running." How to get it going?
13:40
<Hyperbyte>
service isc-dhcp-server start
13:40
(needs a sudo in front if you're not root)
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14:09
<jg>
Hyperbyte, dhcp server failed to start. syslog shows 'subnet undefined' .. what url I should follow to get this setup correctly? And what did I or the ltsp script miss when installing?
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14:15
<Hyperbyte>
Pastebin your /etc/ltsp/dhcpd.conf
14:15
!pastebin
14:15
<ltsp>
Hyperbyte: pastebin: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
14:16
<Hyperbyte>
Also, pastebin the complete dhcpd output while starting from the syslog please
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14:17
<LuizAngioletti>
Howdy!
14:22
<Hyperbyte>
Hiya!
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14:24
<LuizAngioletti>
=)
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14:39
<jg>
Hyperbyte, using your note re "isc" helped & I have dhcp running now (found dhcp config steps here: /mojotechblog.wordpress.com/2011/12/01/ubuntu-11-10-ltsp/) and client gets dhcp IP. However the client tells me there is a PXE ARP timeout and TFTP fails.
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14:48
<JesseC>
Is there any infomation out there about the average disk IOP usage on a common ltsp fat client?
14:50
<||cw>
JesseC: that's going to be completely workload dependent
14:50
<JesseC>
Yeah, I know that much. I guess I'm just looking for averages, similar to what some people have done for VDI setups.
14:51
Hmm.. just gave myself an idea. ;)
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16:04
<Hyperbyte>
jg2, service tftpd-hpa status
16:05
<jg2>
Hyperbyte, "tftpd-hpa start/running, process 1100"
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16:06
<Hyperbyte>
I'm gonna go back to what I said before
16:06
Pastebin your /etc/ltsp/dhcpd.conf
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16:19
<Hyperbyte>
jg2, I'm off to my evening job... either someone else will help you, or I'll have a look later tonight or tomorrow... either way, stick around. :-)
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17:06
<LuizAngioletti>
hey andygraybeal!
17:06
I need some help, do you have the timew
17:06
<andygraybeal>
hi LuizAngioletti how are things?
17:06
<LuizAngioletti>
?
17:06
<andygraybeal>
yes, shoot.
17:06
<LuizAngioletti>
As you might already know...
17:06
I'm using LTSP inside a Vm on Virtualbox.
17:07
VBox offers the guestadd-ons in a virtual CD that can be mounted.
17:07
I have currently no clients running, so everything is done from the server.
17:07
I mount the CD.
17:07
I chroot to /opt/ltsp/i386
17:07
and then...
17:08
I can't see anything mounted. The prompt replies with: "warning: can't open /etc/mtab: No such file or directory"
17:08
<||cw>
mount it while in the chroot
17:09
and don't forget to loop mount dev and sys and proc
17:09
<LuizAngioletti>
hum... =P That I did forget. =P
17:09
||cw: thx.
17:09
<andygraybeal>
also, there is a script that alkisg has.. that loads your environment variables as well in the chroot. this is helpful
17:09
things like proc and etc.
17:09
i don't know the details of such wizardry.
17:10
<||cw>
that going to be included in precise?
17:10
<andygraybeal>
i think so
17:10
<||cw>
cool
17:10
<andygraybeal>
i don't know if it's in precise, i thin it's going to be in the next vresion of ltsp though
17:10
you can download it and run it, i have done this.
17:10
<alkisg>
andygraybeal: if you're talking about ltsp-chroot, it's not my script, and it's included from 10.04 on :)
17:11
<andygraybeal>
aah there you have it.
17:11
from the horse.
17:11
<alkisg>
I did update its code like other scripts, but most ltsp code is product of cooperation
17:12
LuizAngioletti: why do you need the vbox guest additions?
17:12
You can add any vesa modes you want, and it support a tablet mode for mouse integration
17:12
So I didn't find any need to install them...
17:14
<LuizAngioletti>
alkisg: That's way too confusing for me. I have a CD... it solves my problem.. it's right here.
17:14
Isn't it harder to do what you're saying --- Although I don't quite understand it all..
17:14
??
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17:15
<alkisg>
I think it's easier, it's just 1 vboxmanage command
17:15
What do you want the guest additions for ?
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17:19
<LuizAngioletti>
alkisg: to be able to dynamicaly resize the window size
17:20
<alkisg>
OK, vesa doesn't allow that, it only supports fixed resolutions of any size, e.g. 1234x789
17:20
So go ahead and try to install them
17:22
<LuizAngioletti>
alkisg: =)
17:22
<alkisg>
On real servers + VM clients it's difficult because the installer can't detect the vbox hardware and complains, I think
17:22
But in your case it should be simple enough
17:25
<LuizAngioletti>
What I'm seeing here is that the installer can't find the kernel headers, although they are installed in the chrooted system
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17:26
<LuizAngioletti>
and /proc and /dev are mounted in the chroot
17:26
<andygraybeal>
i ran into problem where i had server kernels... sometime long time ago, or something like this. it was a while ago... ihad to move the correct kernel versions around
17:27
i don't know if that has anythign to do with what you are doing :P
17:27
<LuizAngioletti>
http://pastebin.com/dk909fFK
17:28
andygraybeal: It might. I installed the server version --- Ubuntu Alternate CD.
17:28
I don't know about the client image
17:28
<alkisg>
LuizAngioletti: if possible, try to have the same kernel in the server as the one in the chroot
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17:28
<alkisg>
LuizAngioletti: which distro/version are you using?
17:29
That's one of the reasons I was trying to allow ltsp chroots to be bootable with vbox, then you could just boot the chroot VM and attach the driver CD
17:29
<LuizAngioletti>
Ubuntu 10.04, kernel 2.6.32-38-generic on both server and client
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17:29
<LuizAngioletti>
from the alternate CD
17:30
<||cw>
my 10.04 doens't have ltsp-chroot :(
17:30
<alkisg>
||cw: dpkg -L ltsp-server| grep ltsp-chroot
17:31
<||cw>
ah, just not in path
17:31
<alkisg>
LuizAngioletti: ok, if it was 12.04 I would propose some other way, I don't have anything else to propose there other than booting the server with the chroot kernel
17:32
<LuizAngioletti>
alkisg: How would I do that
17:32
<alkisg>
apt-get install the kernel and reboot the server
17:32
<LuizAngioletti>
?
17:33
<alkisg>
sudo chroot /opt/ltsp/i386 dpkg -l 'linux-image*' | grep ^ii
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17:51
<knipwim>
is ubuntu using xinetd to start nbd-server for chroot images?
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17:59
<ogra_>
not ootb
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18:00
<vagrantc>
knipwim: next version will just be using nbd-server's init scripts (or upstart jobs?)
18:01
ditto for debian, if you've configured it to use NBD
18:03
<knipwim>
i see, the service is configured in ltsp-update-image
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18:24
<jg2>
Hyperbyte, here's the file: http://pastebin.com/download.php?i=SJ73pi3x
18:36
<knipwim>
hmm, for some reason mounting an nbd image on the client only works when starting nbd-server from the commandline
18:37
the nbdrootd xinet.d script seems to fail
18:37
or the nbdrootd script
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18:39
<alkisg>
knipwim: aren't you switching to name-based exports?
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18:48
<knipwim>
i haven't come to that
18:49
first, boot from nbd, all manual
18:49
<alkisg>
Maybe you should directly try with the name-based exports then instead of the port-based ones
18:50
nbd-client -N ltsp_i386 etcetc
18:53
<knipwim>
the named config is created in the ltsp-update-image?
18:54
<alkisg>
Yes, but you can also create it manually if you like
18:54
And the IANA assigned port is 10809
18:55
No more reserved ports like 2000
18:55
<knipwim>
looks promising
18:55
too bad gentoo doesn't provide an initscript
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19:08
<Llama_be>
knipwim: i'm not able to be here long and i'm on my phone, so can't really test anything, but yesterday i did the ltsp-build-client with the kicktoo 5.3 profile, and it failed, wanting to install grub. why does it need grub?
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19:08
<highvoltage>
ǝuoʎɹǝʌǝ ollǝɥ
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19:18
<ogra_>
highvoltage, you in .au ?
19:18
<elias_a>
highvoltage: Dude, you're starting to learn! :D
19:19
<knipwim>
Llama_be: it shouldn't
19:19
<highvoltage>
ogra_: oops, no I was just upside down :)
19:19
<knipwim>
Llama_be: is it a dependency?
19:20
<ogra_>
:)
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19:40
<Llama_be>
i'll check it later, but it was in the default profile i believe, because i dont think i modified anything
19:42
i think grub was already compiled, and it was trying to find a device to put it in the boot sector of
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20:18
<knipwim>
Llama_be: you mean it's configuring the bootloader? or just emerging grub
20:22
i think a pastbinned build log would help
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20:25
<Llama_be>
ill pastebin the log later on, not at my pc atm
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