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


Channel log from 4 October 2012   (all times are UTC)

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02:04
<h20>
i need help with my ubuntu 12.04 ltsp setup
02:04
my clients can not connect to the nbd-server
02:05
i get bad port range, error connect: connection refused
02:05
my tftp server is different from my ltsp server
02:06
so my nbdroot is set as nbdroot=192.168.1.100:ltsp_i386
02:08
btw, what does ltsp-update-image do? i did an lstp-update-image -a i386 -p 2000 because I recall doing that when configuring ltsp on 10.4
02:09
what changes when the port is included?
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03:20
<muppis>
h20, leave the -p 2000 out from ltsp-update-image, no longer needed in 12.04
03:21
<h20>
muppis, thanks. i have rebuilt it without the -p option
03:21
i still get the same error
03:21
tcpdump on the server does not show that the client connects to the server for an nbd connection
03:22
setting it to nbdroot=IPofMyLTSPServer:ltsp_i386 is correct right?
03:22
since i do not have the same tftp server and ltsp server
03:22
<muppis>
Hold on, I check.
03:25
Yes, if your tftpd and nbd are on different machines. I got only nbdroot=:ltsp_amd64 as I use 64bit clients.
03:25
And server is same.
03:26
<h20>
muppis, thanks i just used ltsp-update-image -S IPofMyNBDServer and it changed pxelinux.cfg/default to the format above
03:27
<muppis>
And still not working?
03:27
<h20>
muppis, i have set it that way already
03:28
and it is not working
03:28
do you know if ltsp-client-core is needed in the server?
03:28
i installed ltsp-server only
03:28
i am not using the standalone setup
03:29
<muppis>
Not needed.
03:29
<h20>
hmm
03:29
do you know what tools i can use on the terminal so i can do some debugging?
03:29
scripts i can run?
03:30
from the client which drops to ash
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03:35
<muppis>
Not really much from there. You can cat /proc/cmdline and compare it to the tftpd's one. Then can try to check from server which ports nbd-server listens on server and try manually connect to that with nbd-client
03:36
You can try nbd-client from that shell or from server chroot /opt/ltsp/i386/sbin/nbd-client
03:38
nbd-server should listen 10809
03:39
<h20>
muppis, thanks will try it. the nbd-server is already running in the correct port
03:40
<muppis>
And IP 0.0.0.0 ?
03:40
<h20>
yes
03:41
muppis, i have the output of /proc/cmdline
03:41
what does the ip parameter mean?
03:42
<muppis>
All zeros mean it listen all interfaces.
03:42
<h20>
i get ip=192.168.1.57:192.168.1.2:192.168.1.2:255.255.255.0
03:42
<muppis>
That's client ip, gw, dns and netmask
03:43
<h20>
ah ok
03:43
so its fine
03:43
<muppis>
If I remember order correctly.
03:44
<h20>
muppis okey, because if it refers to the ltsp server then its wrong
03:44
<muppis>
But now I need head to work. I'm from there in a hour.
03:44
<h20>
muppis thanks
04:04
<alkisg>
!nbd-client
04:04
<ltsp>
nbd-client: To try mounting the NBD image from the client initramfs: nbd-client 192.168.67.1 -N /opt/ltsp/i386 /dev/nbd0
04:05
<alkisg>
h20: try nbd-client server-ip -N :ltsp_i386 /dev/nbd0, from either the busybox shell or from another client
04:05
To verify that your server is set up correctly
04:06
<h20>
alksig, thanks i was having trouble getting the correct parameters
04:08
alksig, i get the error cannot open NBD: no such file or directory
04:08
modprbe nbd does not solve it
04:09
i will try from another terminal
04:09
the error came from the thinclient which failed to connect
04:11
<alkisg>
h20: use <tab> to autocomplete the user names in irc
04:11
h20: cannot open nbd? or nbd-client?
04:12
<h20>
alkisg: its the out put from nbd-client
04:13
<alkisg>
h20: ls -l /dev/nbd0
04:13
Is that file there?
04:13
<h20>
yes /dev/nbd0 is there
04:14
<alkisg>
ls /sbin/nbd-client
04:14
That there too?
04:15
<h20>
alkisg: opps, its gone now. /dev/nbd0 was there a while ago
04:15
let me reboot the client
04:15
sorry i am slow to respond, i am doing this remotely from the place where the server and clients are
04:15
for the client i am just using virtualbox
04:16
<alkisg>
In bridged mode, right?
04:17
<h20>
alkisg: yes in bridge mode
04:18
alkisg: i rebooted and checked first for /dev/nbd0
04:18
its there now
04:18
i ran the nbd-client command
04:19
i still get error: cannot open nbd: no such file or directory
04:19
please ensure that the nbd module is loaded
04:19
<alkisg>
Is that ubuntu 12.04?
04:20
<h20>
alkisg: yes its 12.04 installed using server setup
04:20
i only installed ltsp-server
04:21
<alkisg>
You'll also need X afterwards
04:21
And you run ltsp-build-client etc, I assume...
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04:21
<h20>
X is already installed in the server and i ran ltsp-build-client
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04:24
<alkisg>
Is /dev/nbd0 still there?
04:25
<h20>
alkisg: it is still there, i think it got lost after i ran init again
04:26
that is why i opted to reboot it
04:26
<alkisg>
Any errors in dmesg or /var/log/syslog?
04:26
<h20>
i just tested using nbd-client from a desktop terminal
04:26
same error
04:26
alkisg: on the server?
04:26
<alkisg>
Did you install nbd-client on the desktop terminal?
04:27
<h20>
alkisg: yes
04:27
<alkisg>
And modprobe'd nbd?
04:27
What command line are you using? Is the desktop 12.04 too?
04:27
<h20>
alkisg: no since /dev/nbd0 is already there
04:27
alkisg: no, its a 10.04 desktop
04:28
<alkisg>
10.04 doesn't support -N
04:28
(no named nbd exports support)
04:28
<h20>
alkisg: ah alright
04:29
<alkisg>
On the busybox, nbd-client --help, does it say 2.9.25?
04:30
<h20>
alkisg: no its 2.9.14
04:30
alkisg: i should upgrade the client?
04:31
<alkisg>
h20: and the output of uname -a?
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04:31
<alkisg>
No, it seems that you're not sending the 12.04 initramfs to the client, but something else, might be a 10.04 initramfs
04:32
<h20>
alkisg: 2.6.32-41-generic
04:32
<alkisg>
$ uname -a
04:32
Linux alkis 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 i686 i386 GNU/Linux
04:32
Right, that's 10.04
04:32
Check your dhcp/tftp settings
04:33
<h20>
alkisg: hmm, yes i think i have my boot images wrong
04:33* alkisg has to go, bb in 1h
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04:40
<h20>
its working now. i got old 10.04 images mixed with the 12.04 images
04:41
<muppis>
Sure not having a firewall set up at server?
04:41
Oh.. Got in backlog. :D
04:42
<h20>
muppis, i think i was in the wrong server when i copied the images
04:42
<muppis>
Oh.
04:43
<h20>
i recall, i was being concerned of mixing things up
04:43
and i did
04:43
;)
04:43
<muppis>
Happens. Do you buidl an image on another server?
04:43
Build.
04:43
<h20>
alkisg, figured it out
04:44
muppis, i built the images from the new server
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04:44
<h20>
but to get to the new server i have to pass by the old server
04:44
so the confusion
04:44
<muppis>
Ah.
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07:53
<thebwt>
with thick clienting we have a manually installed service that tries to fetch the machine's ip address when started. for some reason it only ever gets 27.0.0.2 as the ip. any thoughts on where to go after this from?
08:06
<alkisg>
What "service" do you mean? Isn't that plain dhcp?
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09:06
<ltspuser_05>
I have a scenario with a debian which is the DNS,DHCP and LTSP server....
09:06
This machine is responsable for the deployment of an ubuntu filesystem to some terminals...
09:07
the filesystem is based on ubuntu 12.04
09:07
but when it boots don't run the lts.conf and don't boot a LDM session...
09:09
and I saw in some articles that is necessary to have init=/sbin/init-ltsp in pxelinux.0/default but if I put this param the terminal doesn't boot
09:09
I don't know what I am doing wrong...
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09:35
<Hyperbyte>
ltspuser_05, are you using fat or thin clients?
09:37
Shouldn't matter much either way... generally speaking, if you want to run a different OS on the LTSP server, than the one you want to use for the clients, is to build an LTSP server with the intended OS, get it working 100%, then copy over the /opt/ltsp/ and /var/lib/tftpboot/ directories
09:38
You'll need to manually update the LTSP sshkeys, but that should be about it.
09:38
But - there's an even easier way, and this is the way I would go: virtualize your LTSP server.
09:39
At the radio station where I volunteer, I have a Fedora server which needs to serve Ubuntu LTSP. On the Fedora server, I run a virtual machine with Ubuntu 12.04 and LTSP.
09:40
No hacking required whatsoever, just runs fine out of the box... you just need to configure DHCP and you're ready to go.
09:40
Running a terminal server virtualized also has great advantages should you ever need to do maintenance, or a distro upgrade, since you can easily backup and restore virtual machines.
09:43
<ltspuser_05>
yes I understand...
09:44
but the tftpboot and the filesystem must be in /var/lib/tftpboot/ and /opt/ltsp/?
09:44
or can I choose the place and send it using dhcp??
09:45
when I use the line init=/sbin/init-ltsp it gives me this error: "plymouthd: ply_terminal.c:630: ply_terminal_set_mode: Asssertion..."
09:46
I have changed the pxelinux.0/default and ut !quiet-splash but the error appears...
09:51
<Hyperbyte>
ltspuser_05, the /opt/ltsp/ location is determined in the NBD config file. You will need to run NBD, and point it to that directory. The DHCP server determines the filename within that directory.
09:52
<ltspuser_05>
but I need to use nfs...
09:52
<Hyperbyte>
Hrm, Ubuntu uses NBD by default.
09:53
But - let's get to a simpler problem. Why have you chosen for this complicated setup?
09:53
<ltspuser_05>
because I had this deployment for other terminals...
09:53
<Hyperbyte>
Why are you not either running LTSP directly on Debian (yes, Debian has LTSP integrated too), or running Ubuntu inside a virtual PC?
09:53
<ltspuser_05>
and I can't change...
09:54
I am running ltsp on debian...
09:54
but I need to send to the terminals an ubuntu filesystem...
09:54
<Hyperbyte>
Why?
09:55
<ltspuser_05>
because with a filesystem based on squeeze I couldn't open sessions using xdmcp
09:55
and the alternative was change to an ubuntu filesystem...
09:56
<Hyperbyte>
Why do you need XDMCP?
09:57
<ltspuser_05>
but if I delete this option init=/sbin/init-ltsp from pxelinux.o/default the terminal boots and I see a shell... but not running lts.conf to open a LDM session...
09:57
I only need LDM but with squeeze I was having problems with the themes
09:57
http://imagebin.org/230484
09:58
the firefox has a different theme...
09:59
and with this filesystem is all working...
09:59
<Hyperbyte>
So instead of fixing the Firefox theme, you switched to a Ubuntu chroot, but with a Debian server?
09:59
<ltspuser_05>
I tried to fix...
09:59
I asked here...
09:59
but I got no solution
10:00
but what's the problem? It's only the filesystem that is passed to the terminal...
10:00
right?
10:01
the Debian server is only for DHCP and DNS server...
10:01
<Hyperbyte>
Why don't you just install Ubuntu then?
10:02
<ltspuser_05>
because the installation is like this
10:02
I can't change right now
10:02
<Hyperbyte>
Either way, the theme thing is caused by localapps running in a different theme I bet. I thought it was just a matter of installing the right theme in the client image.
10:02
But I haven't felt the need to fix it yet.
10:03
Alternatively you could disable Firefox as a localapp, if your system can handle that.
10:03
<ltspuser_05>
It's not localapps... the apps was running on the server
10:03
I don't know what was happening with that scenario...
10:04
but with the ubuntu it's working...
10:04
<Hyperbyte>
Right, but you've created a very difficult setup now, and I can't help you with it. Maybe someone else, but I've never ran a different chroot with LTSP than one 100% compatible with the host system.
10:05
Better wait a bit here, maybe if alkisg pays some attention he could help you.
10:06
<ltspuser_05>
ok
10:06
I understand
10:06
thank you
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10:52
<ltspuser_05>
Hyperbyte could you tell alkisg the situation?
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11:34
<Hyperbyte>
ltspuser_05, you just did. :)
11:35
Alkis is one of the LTSP developers. He hangs out here. He's at work though. :)
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13:35
<ltspuser_07>
i want to custommize the client(running on raspberrypi) where are the config files for that?
13:36
anyone online?
13:37
<Hyperbyte>
Hi...
13:38
<ltspuser_07>
ah
13:38
<Hyperbyte>
Be a little patient please, most of us are at work, or otherwise occupied. ;-)
13:38
<ltspuser_07>
can you help me with my question?
13:38
<Hyperbyte>
Waiting for a few hours (yes, HOURS ;-)) before you get an answer isn't very uncommon here. ;-)
13:38
As for your question... you'll need to be specific.
13:38
<ltspuser_07>
ow thats sad
13:38
<Hyperbyte>
What -exactly- do you want to compromise?
13:39
No, that's not sad :-) That's great! It means everyone involved in LTSP has a good job. :P
13:39
*compromise? -> customize
13:39
<ltspuser_07>
thats true
13:39
yes customize
13:39
<Hyperbyte>
Yes, what exactly? :P
13:39
<ltspuser_07>
default session enz.
13:40
<Hyperbyte>
'enz'? You sound Dutch. :)
13:40
<ltspuser_07>
ja precies
13:40
<Hyperbyte>
Grappig. :) Anyway, session is set from lts.conf
13:40
!lts.conf
13:40
<ltsp>
lts.conf: http://manpages.ubuntu.com/lts.conf
13:40
<knipwim>
nederlanders!!!
13:40
<Hyperbyte>
Particularly LDM_SESSION
13:41
Haha
13:41
<ltspuser_07>
it's running on raspberrypi but i can buid new image
13:42
it's a minimal system
13:42
so no ubuntu or what ever
13:42
ubuntu is my server
13:42
<Hyperbyte>
LTSP clients have no software on them. They boot from the network. Naturally, anything you want to configure on the clients, needs to be configured on the server.
13:43
<ltspuser_07>
no my client has a minimum linux system running
13:43
raspberrypi can't boot from network
13:44
or am i seeing things wrong?
13:44
<Hyperbyte>
They can't? Well that sucks greatly.
13:44
<ltspuser_07>
but i get it runnging
13:44
running
13:44
<Hyperbyte>
No, probably not. I haven't looked into Raspberry Pi... always found them promising, but if they don't netboot my interest is suddenly gone. :)
13:45
<ltspuser_07>
i have one running right now(am typing this to you on my pi)
13:45
<Hyperbyte>
Nice. :)
13:45
<ltspuser_07>
see berryterminal.org
13:45
<Hyperbyte>
No thanks... I'm at work remember? ;-)
13:45
<ltspuser_07>
but i cant find the right config files
13:46
oh yeah sorry
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13:47
<Hyperbyte>
Anyway, if you don't use NBD network boot, but a local image with LDM, you lts.conf file should be in /etc/lts.conf I believe... of /etc/ltsp/lts.conf, not sure... knipwim knows lots more about this than I do.
13:48
<ltspuser_07>
ok thank i'l check it out
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14:09
<ltspuser_07>
i cant find it
14:11
i only need the select your session side manager config file
14:11
<asmok>
is there something (maybe) undocumented/caveats when using Epoptes with ltsp-pnp/fat clients? There is no own chroot for fat clients (ltsp-update-image --cleanup /)
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14:16
<ltspuser_15>
how can I put the ubuntu 12.04 working using nfs instead of nbd??
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14:32
<servercbe>
hello. I am having issues with my dhcp... It is not giving an IP to the thin clients!...
14:32
what can I do? Any Suggestions... :)
14:34
By the way... Good Morning!
14:35
mmm--- anybody there?
14:36
hello, hello, hello?
14:36
<dead_inside>
chill servercbe
14:38
<servercbe>
ok... I'm strees 'cause I have class in 1 hour... :(
14:38
<dead_inside>
do you have anything in your dhcpd logs
14:38
on ubuntu /var/log/dhcpd/dhcpd.log
14:39
<servercbe>
bash: /var/log/dhcpd/dhcpd.log: No existe el archivo o el directorio
14:39
doesnt exit
14:39
<dead_inside>
is this ubuntu
14:39
<servercbe>
edubuntu 12.04.1
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14:43
<servercbe>
any suggestion?
14:45
<dead_inside>
i am trying to look for you
14:45
i rarely trouble shoot dhcp cause it usually always just works
14:45
!paste
14:45
<ltsp>
paste: try !pastebot
14:46
<dead_inside>
can you use like pastebin and upload your dhcp config so i can give it a quick look over?
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14:52
<Hyperbyte>
servercbe, is the dhcp server running?
14:53
<servercbe>
to be honest.. I dont know..
14:54
I am a baby with this topics
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14:56
<servercbe>
can you send me a command to see everythin you need..
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15:14
<servercbe>
I got this message.. The controller of Hard diskn /dev/mapper/cryptswap1 is not ready...
15:14
what is that mean?
15:15
<dead_inside>
did you get that message on the client or on the server
15:15
<servercbe>
server
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15:16
<dead_inside>
i have never herd of that
15:17
but to see if dhcp is running try
15:17
ps aux | grep dhcp
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15:17
<dead_inside>
hopefully it shows you /usr/sbin/dhcpd3 -q -pf /var/run/dhcp3-server/dhcpd.pid -cf /etc/dhcp3/dhcpd.conf
15:17
or something like that
15:21
<servercbe>
http://pastebin.com/j3q8qiwF
15:25
<dead_inside>
you have two nics on your server?
15:26
cause your second interface is listening on dhcp… just seems where having a dhcp server that is pulling a dhcp ip address
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15:27
<servercbe>
nics? do you mean ethernet card??? yes
15:28
two...
15:28
One for internet and the other one for ltsp
15:30
I have 1 swich (8ports) where I get Internet and then I have another swich (24 port) where I conect 23 computers..
15:31
with ltsṕ
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15:32
<dead_inside>
is the internet side using DHCP to get it's ip address
15:32
?
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15:50
<servercbe>
yes
15:50
sorry.. I was out for a moment
15:50
<dead_inside>
thats ok
15:50
is the ip of your inside ethernet 10.0.3.1
15:58
<servercbe>
no'that I know
16:01
Ltsp , I think should be 192.168......
16:02
mmm.. I' ll be back after class.. (without computers... :(
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16:04
<dead_inside>
a class without computers?
16:04
sounds painfull
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18:07
<kb8wmc>
alkisg: I finally got my Thinkpad T40 to properly boot to the server, what made the difference for me was the creation of an "T40-xorg.conf" file for the client to use, then all fell in place...
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18:25
<asmok>
sorry for noise, about Epoptes and ltsp-pnp/fat client: http://arkki.info/howto/Precise/epoptes-ltsp-pnp.png
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18:50
<markit>
hi ppl, hi alkisg ... do you have some time (now or later) to try to help me troubleshooting why I can't connect in ssh to fat client?
18:52
<alkisg>
Hi markit, sure but I'll be a little slow to respond, I'm doing something...
18:53
<markit>
don't worry for me, alone I'm not able to solve so... just tell me when you want to stop
18:53* markit turns proxmox server on, with a ltsp VM
18:54
<alkisg>
markit: you're supposed to (1) install openssh-server to the chroot, (2) configure sshd_config to allow root logins, (3) set up a root password in the chroot, (4) ltsp-update-image
18:54
...or you can just use epoptes instead of all that :D
18:54
Are you sure you want ssh and that epoptes isn't enough for your needs?
18:55
<markit>
well, I don't have access to the VM display, so ssh would be much better
18:55
since it SHOULD "just works"
18:55
<alkisg>
You do know that epoptes can give you a root console without even X running, right?
18:55
<markit>
ehm... no :)
18:55
<alkisg>
RIght click, open terminal, root, locally
18:55
<markit>
oh, you mean X on the client
18:55
<alkisg>
Yeah
18:55
<markit>
but to run epoptes I need to see the server display
18:56
I could ssh -X to the server
18:56
run epoptes...?
18:56
<alkisg>
Yup
18:56
And you can even tell the client to connect by console to your remote pc at home, whatever
18:56
<markit>
ok, I would love to try ssh, but if we find is something that is not working, I will use epoptes
18:56
<alkisg>
OK
18:56
Did you do the 4 steps above?
18:57
<markit>
ehm, still booting, but as far as I remember, I did
18:57
just better check once more
18:57* markit proxmox doing fsck... sigh
18:57
<alkisg>
You can also set a password locally and use a sudoer to do whatever you want
18:57
(ssh as the user)
18:57
<markit>
define "locally"
18:57
<alkisg>
You have many alternatives, no need for root, but np, whatever you like
18:58
On the fat client: passwd (as a sudoer user)
18:58
Then use ssh to ssh as that user with that password
18:58
And then run sudo <command>
18:58
<markit>
ah, I see, but I want to ssh at LDM stage
18:58
to be able to profile in some way kde / plasma behaviour
18:58
<alkisg>
OK - you can still create a user with epoptes or with screen_02=shell, but np
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18:59
<alkisg>
And finally, you could set the user password, install ssh etc from epoptes or from screen_02=shell, no need to run ltsp-update-image
18:59
*the root password
18:59
And changes would be lost after reboot, keeping your chroot clean
19:00
...many options... :D
19:00
<markit>
I did it initially, but did not worked
19:00
now I wonder if I activated shorewall by mistake
19:01
ltsp-chroot -a i386 -p -d -c
19:01
'# passwd
19:02
password updated correctly
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19:02
<markit>
ii openssh-server 1:5.9p1-5ubuntu1
19:02
'# grep -i root /etc/ssh/sshd_config
19:03
PermitRootLogin yes
19:03
exit
19:03
<alkisg>
Is the client booted? Do you have some root access to it to try stuff? (epoptes, screen_02=shell...)
19:03
<markit>
I've screen_02
19:03
I could boot the client asap
19:03
I'm pretty sure that root password was set previously
19:04
<alkisg>
Wait, is it working now or not?
19:05
<markit>
shorewall is NOT enabled
19:05
let me check, FAT is booting, now at ldm
19:05
# ssh root@192.168.20.102
19:05
Connection closed by 192.168.20.102
19:05
let me enter in teh fat with 02=shell
19:06
ps ax shows sshd -D running
19:07
if I run tcpdump in teh FAT client I have in the server
19:07
# ssh root@192.168.20.102
19:07
Read from socket failed: Connection reset by peer
19:08
and I see that tries to connect
19:08
seems like there is something wrong at ssh protocol level
19:09
googling I've found the suggstion to edit /etc/ssh/ssh_config
19:09
<alkisg>
Try ssh localhost, from screen_02
19:09
<markit>
(I did in the server)
19:09
ok
19:09
Read from socket failed: Connection reset by peer
19:10
I'm using sshfs and not NFS, just in case is relevant
19:10
(don't think so but...)
19:11
<alkisg>
screen_02: netstat -nap|grep :22
19:12
And tail /var/log/auth.log
19:12
<markit>
ehm, netstat not installed sigh
19:13
root@gs1204:~# nmap 192.168.20.102
19:13
22/tcp open ssh
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19:13
<markit>
(if is relevant too.. nmap from the server )
19:13
ok
19:14
auth log
19:14
could not load host keys /etc/ssh/ss_host_ecdsa_key
19:14
<alkisg>
netstat is part of net-tools, which is part of ubuntu-minimal
19:14
So it would be very strange if it isn't installed
19:14
<markit>
fatal not supported key exchange
19:15
ii net-tools
19:15
<alkisg>
ls /bin/netstat
19:15
<markit>
maybe I wrote badly, let's check
19:16
ehm, shame non my I wrote nAtstat
19:16
it's listening on 0.0.0.0
19:16
but from auth log seems a key exchange problem
19:16
<alkisg>
screen_02: ls -lha /etc/ssh/*key
19:16
-rw------- 1 root root 668 Δεκ 6 2011 /etc/ssh/ssh_host_dsa_key
19:16
-rw------- 1 root root 227 Δεκ 6 2011 /etc/ssh/ssh_host_ecdsa_key
19:16
-rw------- 1 root root 1,7K Δεκ 6 2011 /etc/ssh/ssh_host_rsa_key
19:16
You should see something like that
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19:17
<markit>
none of the above
19:17
<alkisg>
Bad sshd installation
19:17
<markit>
in the rid there are some *.pub files
19:17
<alkisg>
screen_02: apt-get purge openssh-server; apt-get install openssh-server
19:18
<markit>
so lucky :(
19:18
<alkisg>
It probably warned you when you tried to install it
19:19
<markit>
now I have the keys
19:19
<alkisg>
Allow root from sshd_config, restart openssh_server, try to connect
19:20
<markit>
alkisg: it works!!! thanks so much
19:20
<alkisg>
Cool, so, reinstall openssh_server in the chroot, ltsp-update-image etc
19:20
<markit>
you solved in a bunch of minutes/tests, I would NEVER be able to troubleshoot
19:20
I'm wondering if I better learn tennis instead of insist with IT
19:21
<alkisg>
Hahaha
19:21
markit: btw some time I'd like to re-do the network benchmarks on your lab
19:21
<markit>
but probably I would have problems there too
19:21
alkisg: would love to do
19:21
<alkisg>
From the video you sent me once, it seems like 100mbps server network speed, not gigabit...
19:22
<markit>
I can pastebin you the last test I did
19:22
so you can check if I did it badly
19:22
(hoping to find the file)
19:22
<alkisg>
markit: did you manually turn flow control off on the server?
19:23
<knipwim>
alkisg: i'm getting the following error when installing epoptes
19:23
http://dpaste.com/809927/
19:23
<alkisg>
Phantomas: ^ /me brb
19:23
<markit>
alkisg: no, never
19:24
<alkisg>
markit: ok it's still possible that your switch is good enough, but we should re-test
19:24
<markit>
it's an expensive one
19:24
I've the pdf manual, let me check
19:25
default settings: Flow control: Off
19:25
Duplex: Auto
19:25
Speed: Auto
19:25
end :)
19:26
in any case, I will check next time
19:27
alkisg: btw, I've not found a method to log the I/O traffic done by each process during KDE start.. iotop -o gives you the instant value
19:28
I would love to have something you can run and then have the "top 20" processes and how much they I/O to the disk
19:28
<Phantomas>
knipwim: Which version of python-distutils-extra do you have installed?
19:29
markit: have you tried Iotop?
19:29
(I have not)
19:33
markit: ehm, sorry, rushed reading :)
19:33
<markit>
;P
19:33
it's the standard reply you usually get in FOSS forums
19:33
"I need X, I've tried Y but does not work" R.: "try Y"
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19:34
<Phantomas>
but I haven't understand what's your problem with iotop
19:36
markit: if you run sudo iotop you have a top-like interface
19:36
<markit>
Phantomas: I want to see during "plasma" (kde desktop) load what process has heavy I/O
19:37
with iotop I can see it but rows jumps up and down
19:37
I should make a movie of the screen
19:37
I would love instead to have a sort of "log file"
19:37
with processes listed and I/O involved
19:37
so I can send to KDE devs
19:37
brb
19:37
<Phantomas>
iotop -b maybe?
19:38
<markit>
I've found some flag that can help
19:38
<Phantomas>
iotop -b > my_io_usage_logs
19:38
<markit>
but wondered if there was the right took
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19:38
<markit>
yes, but then you have a lot of "screenshot" of iotop
19:38
not the total
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19:39
<markit>
if a process does i/o, then nothing, then again
19:39
you may have it in 1st and 4° batch
19:41
<alkisg>
markit: the goal of all that is to find out what's causing all this traffic in KDE?
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19:41
<alkisg>
Or just to show the devs that indeed there is traffic?
19:48
<knipwim>
Phantomas: 2.33
19:48
<alkisg>
knipwim: Phantomas is the one that writes the python parts of epoptes, I'm writing the shell parts ;)
19:48
Phantomas: knipwim is the Gentoo LTSP maintainer
19:49
knipwim: btw the setup.py isn't a proper python setup file, it's just a helper to put the files in the correct place when debhelper creates the .deb package
19:50
So I've never tried to install it from source, I don't know if it works that way...
19:50
(we didn't have enough time to read ALL the instructions about creating proper setup.py installers :D)
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19:51
<knipwim>
ah, that could explain a lot
19:52
<alkisg>
Of course we're interested in fixing it, but it would take some time
19:53
<knipwim>
no worries
19:53
perhaps Phantomas has the key to solving it
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19:54
<knipwim>
knowing the setup.py isn't complete
19:54
i could try to make it work
19:54
taking the current epoptes builds in ubuntu/debian as a reference
20:01
<alkisg>
We're getting ready for a workshop in 2 days so we'll probably have to postpone any work in setup.py until Monday... but if you can get it to work, we'd gladly accept any patches :)
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20:07
<markit>
alkisg: what is causing traffic... even if just in local installation you have a high I/O
20:08
so I would love have had a reply like "oh, just disable XYZ"
20:08
instead they were wondering why lan traffic is 3 times "local workstation" I/O
20:08
and if the cache was really used or rebuild many times by different part
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20:08
<markit>
that could not work fine due to some ltsp limitation
20:09
(not having follow_symlink work could be a big problem)
20:11
maybe fixing the "Call to lnusertemp failed (temporary directory full?)" error with follow_symlink = true could give some benefit
20:12
but I don't understand the insight of ltsp nor of kde, so is beyond my capability
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20:36
<alkisg>
markit: remind me in a couple of weeks to have a look at KDE+LTSP...
20:37
<markit>
alkisg: oh, great, thanks a LOT
20:37
btw, I spend some time digging into it too, I'm reading the lounch script and is well commented
20:38
I will not understand what kde is doing "inner", but at least I will see what is the run sequence
20:39
<alkisg>
I can imagine that it creates a big cache at the first login, but I can't imagine KDE not using it on subsequent logins
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20:49
<markit>
alkisg: I chrooted, aptitude purge openssh-server / install, rebuild image, but I've again the same problem (ssh does not work, and *key missing!!!)
20:50
<alkisg>
markit: (1) how do you chroot? (2) what's the output of apt-get install openssh-server in the chroot?
20:50
<markit>
in chroot I've those files, but not in _02=shell
20:50
ltsp-chroot -a i386 -p -d -c
20:51
<alkisg>
sudo mount -o loop,ro /opt/ltsp/images/i386.img /mnt; ls -lha /mnt/etc/ssh/*key; sudo umount /mnt
20:52
<markit>
is it "normal"?
20:52
<alkisg>
Are they there in i386.img? Run the above ^ commands to see...
20:53
<markit>
no, there are not
20:53
in image I find what I find in the fat client (of course :)) and there are no +key files
20:54
<alkisg>
markit: sudo kate /etc/ltsp/ltsp-update-image.excludes
20:54
...and remove the line that mentions /etc/ssh/*
20:54
etc/ssh/ssh_host_*_key
20:54
...and then run ltsp-update-image again
20:54
<markit>
oh... etc/ssh/ssh_host_*_key
20:54
probably somethign to fix upstream?
20:55
<alkisg>
No, it's unsafe to have ssh keys in the chroot
20:55
We just need to document it, that they need to be removed from .excludes
20:55
If someone does want to be unsafe...
20:56
(or better yet have a script + lts.conf option to regenerate them on boot)
20:59
<markit>
yep, much better
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21:01
<alkisg>
'night all
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21:01
<markit>
night, and thanks a lot
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22:49
<dtrask>
hey! Any BTS folks online?
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23:22* vagrantc wonders why http://ltsp.org/stories/ just shows invisible content
23:22
<vagrantc>
javascript?
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