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


Channel log from 19 February 2014   (all times are UTC)

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10:36
<stefan_ltsp>
Hello everyone, I'm trying to configure a 64 bit debian wheezy ltsp-server-standalone and obviously I seem to do something fundamentally wrong as I can't get it to work for several days now. This is my configuration: -My ltsp-server has two network-cards: -> eth0 (IP:192.168.0.13) is connected to my dhcp dsl router(IP:192.168.0.1) -> eth1 (IP:192.168.0.13) is connected to a switch where my thin clients are connected to as well
10:36
The dsl-dhcp router is configured to give ip-addresses between 192.168.0.10 and 192.168.0.255 On my debian wheezy I configured the following: sudo apt-get install ltsp-server-standalone sudo ltsp-update-image
10:37
============================= #/etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback #Internet auto eth0 iface eth0 inet dhcp
10:37
#LTSP DHCP Server auto eth1 iface eth1 inet static address 192.168.0.13 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 dns-nameservers 8.8.4.4 8.8.8.8 ====================================
10:38
<alkisg>
It's way easier if you use different subnets
10:38
Put eth1 = 192.168.67.1
10:38
And modify the config files accordingly
10:38
<stefan_ltsp>
Hi alkisg ;), many thanks for this tip
10:40
This is my /etc/ltsp.dhcp.conf file:
10:40
# Default LTSP dhcpd.conf config file. # authoritative; subnet 192.168.0.0 netmask 255.255.255.0 { range 192.168.0.3 192.168.0.9; option domain-name "ltsp-clevisto.com"; option domain-name-servers 192.168.0.13; option broadcast-address 192.168.0.255; option routers 192.168.0.13; next-server 192.168.0.13;
10:40
# get-lease-hostnames true; option subnet-mask 255.255.255.0; option root-path "/opt/ltsp/amd64"; if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" { filename "/ltsp/amd64/pxelinux.0"; } else { filename "/ltsp/amd64/nbi.img"; } } =========================================
10:41
After that I did: ========================================= sudo ltsp-update-sshkeys As the clients wheren't able to boot from the network, I figured out that I probably need dnsmasq installed as well. sudo apt-get install dnsmasq =========================================
10:42
<alkisg>
Select either dhcpd or dnsmasq, don't use both
10:42
<stefan_ltsp>
ok. Which would you recommend for my network environment?
10:43
The dsl-router has dhcp enabled so I assume I have to use dnsmasq?
10:43
<alkisg>
Describe your setup more
10:43
How many clients, why do you need 2 NICs, are they thin or fat, etc
10:44
<stefan_ltsp>
Only approximately 10 clients
10:44
2 NICs because I read somewhere this is the recommended way to do it.
10:45
eth0 for the server to go online
10:45
<alkisg>
Thin or fat?
10:45
I.e. CPU/RAM of the clients
10:45
<stefan_ltsp>
thin
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10:46
<alkisg>
OK since you started with the 2-nic setup, keep it; i.e. just remove dnsmasq
10:46
<stefan_ltsp>
(At the moment fo testing purposes they are fat, but in the future I want to use thin clients)
10:46
<alkisg>
And change 192.168.0.x to 192.168.67.x in dhcpd.conf
10:46
<stefan_ltsp>
ok, so I uninstall dnsmasq first
10:46
?
10:47
<alkisg>
Yes
10:47
<stefan_ltsp>
ok
10:48
And do I just need to configure these two files /etc/network/interfaces and /etc/ltsp/dhcpd.conf in order to make the clients boot up?
10:49
<alkisg>
Yes
10:49
<stefan_ltsp>
This sounds fine ;)
10:54
Do I have to make further adjustments to these files? My /etc/ltsp/dhcpd.conf file now looks like this:
10:54
subnet 192.168.67.0 netmask 255.255.255.0 { range 192.168.67.0 192.168.0.250; option domain-name "ltsp.com"; option domain-name-servers 192.168.0.13; option broadcast-address 192.168.67.255; option routers 192.168.0.1; next-server 192.168.0.13;
10:54
# get-lease-hostnames true; option subnet-mask 255.255.255.0; option root-path "/opt/ltsp/amd64"; if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" { filename "/ltsp/amd64/pxelinux.0"; } else { filename "/ltsp/amd64/nbi.img"; } }
10:55
IP: 192.168.0.1 is my dhcp dsl-router
10:55
IP: 192.168.0.13 is my ltsp-server
10:56
<alkisg>
Your dhcpd.conf still has 192.168.0 there
10:56
Replace ALL of them with 192.168.67.
10:56
Do a search/replace.
10:57
<stefan_ltsp>
You mean "option routers 192.168.0.1; next-server 192.168.0.13" ?
10:58
I thought option routers is the ip-address of my dsl-router and next-server the ip of my ltsp-server
10:58
<alkisg>
Search. You have 5 192.168.0.
10:58
You should have 0.
10:58
(zero, no 192.168.0 anywhere)
10:59
range 192.168.67.0 192.168.0.250;
10:59
E.g. the second one there is wrong
10:59
You can't have a range from 67.x to 0.x
10:59
Search.
10:59
<stefan_ltsp>
oh, thanks a lot
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11:13
<stefan_ltsp>
I carefully adapted the 2 files with the search function and now they look like this:
11:13
subnet 192.168.67.0 netmask 255.255.255.0 { range 192.168.67.0 192.168.67.250; option domain-name "ltsp.com"; option domain-name-servers 192.168.0.13; option broadcast-address 192.168.67.255; option routers 192.168.0.1;
11:13
next-server 192.168.0.13; # get-lease-hostnames true; option subnet-mask 255.255.255.0; option root-path "/opt/ltsp/amd64"; if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" { filename "/ltsp/amd64/pxelinux.0"; } else { filename "/ltsp/amd64/nbi.img"; } }
11:14
<alkisg>
You still have 192.168.0
11:14
Change them ALL to 192.168.67
11:14
<stefan_ltsp>
also the router's ip?
11:14
<alkisg>
E.g. next-server is the tftp server so your clients won't boot
11:14
Yes
11:14
They can't see a gateway on another subnet
11:15
If they'll even need a router, it'll be the ltsp server
11:15
<stefan_ltsp>
and which ip would you recommend to set in for next-server and option-router?
11:15
192.168.67.13 ?
11:16
or 192.168.67.1?
11:16
<alkisg>
The ltsp server for both
11:17
stefan_ltsp: run this command: sed 's/192.168.0./192.168.67./g' /usr/share/doc/ltsp-server/examples/dhcpd.conf
11:17
This will give you the correct dhcpd.conf
11:17
It's a plain search and replace... which you refuse to do :)
11:23
<stefan_ltsp>
sorry for my stupidity in this case ;). I'm trying to boot my thin clients now again
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11:44
<stefan_ltsp>
unfortunately my clients don't boot ;/
11:44
Is there perhaps something special about debian wheezy?
11:44
https://wiki.debian.org/LTSP/Howto
11:45
I took a fresh debian 7 wheezy install and did the following
11:45
sudo apt-get install ltsp-server-standalone
11:45
sudo ltsp-update-image
11:46
I configured the two files like described above
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11:47
<alkisg>
1) What's the error message on your clients? 2) Did you restart dhcpd? 3) pastebin your current /etc/ltsp/dhcpd.conf
11:48
<stefan_ltsp>
unfortunately I don't get any error message of my 64 bit macbook pro which I have here as test client
11:48
there is blinking globe on the screen and that's it.
11:48
<alkisg>
!kvm
11:48
<ltsp_>
kvm: Virtual thin client: kvm -vga vmware -ctrl-grab -no-shutdown -kernel /var/lib/tftpboot/ltsp/i386/vmlinuz -initrd /var/lib/tftpboot/ltsp/i386/initrd.img -append "ro init=/sbin/init-ltsp root=/dev/nbd0 ip=:10.160.67.10::"
11:48
<alkisg>
....you can try with a virtual client if you don't have a real one
11:49
<gbaman>
wait, stefan_ltsp, you trying to network boot a mac via LTSP?
11:49
<stefan_ltsp>
yes, for test purposes
11:49
via network boot
11:49
<gbaman>
can macs PXE boot?
11:49
had a funny feeling they use some other protocol?
11:51
yea, macs cant by default pxeboot, they usenetboot
11:51
*use netboot
11:52
<stefan_ltsp>
oh, that's something I wouln't have thought of in years
11:52
ok, I'll try a virtual client
11:52
<gbaman>
have a funny feeling reading white back that it is possible by booting off a CD which then loads a pxeboot environment..
11:52
will have a hunt around
11:53
<stefan_ltsp>
thank you so much
11:53
<alkisg>
!ipxe
11:53
<ltsp_>
ipxe: iPXE is the successor to the etherboot/gPXE project, and can be used to netboot clients that don't have a NIC ROM with a PXE stack. To add it to grub, see !grub-ipxe. To add it to the Windows boot loader, see !win32-loader. To download floppy, CD or USB images, visit http://ipxe.org or install the ipxe package.
11:54
<gbaman>
that sounds like it
11:54
anyways, i gota head out, check out ipxe and gpxe
11:55
a virtual client or just a non mac might be simpler though
11:55
<stefan_ltsp>
thanks a lot
11:56
you really helped me very patiently and competent
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12:18
<stefan_ltsp>
@gbaman: I'll go to a different location where I have some non-mac hardware to test with. Thanks a lot for your help!!!
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13:25
<squoter>
guys
13:25
<gbaman>
?
13:25
<squoter>
hi from ukraine)
13:25
can you help me?
13:26
not all client connect to epoptes server
13:26
<gbaman>
LTSP thin/fat clients?
13:26
<squoter>
fat
13:26
<gbaman>
if it works for 1, should work for all?
13:27
same image..
13:27
<squoter>
i dont know why(
13:27
<gbaman>
are the clients all exactly the same hardware?
13:27
<squoter>
yes
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13:27
<gbaman>
..
13:27
tried rebooting them?
13:27
<squoter>
yes
13:27
<gbaman>
..
13:28
<squoter>
epoptec-client -c
13:28
<gbaman>
is it always the same ones that work?
13:28
<squoter>
all is ok, reboot - and not working
13:28
i install this today
13:28
<gbaman>
oh wait, 0 clients are currently connecting to the epoptes server?
13:28
<squoter>
this is school
13:28
1 client connect
13:29
but in classroom 9 pc's
13:29
<gbaman>
hmm
13:29
did the server ip address change?
13:29
<squoter>
no
13:29
i cant understand(
13:29
<gbaman>
and you did do epoptes-client -c on the client chroot?
13:30
<squoter>
yes
13:30
i received key, all is ok
13:30
<gbaman>
hmm
13:30
<squoter>
but after reboot - nothing
13:30
<gbaman>
when you switch everything off and on, do any of the fat clients connect to the epoptes server?
13:30
<squoter>
no((
13:31
<gbaman>
ok, we are getting somewhere
13:31
that is good
13:31
well, not good
13:31
but better
13:31
you using nbd or nfs?
13:32
<squoter>
no
13:33
<gbaman>
well, you will be using 1 or the other
13:34
if using nbd, don't forget to update your image after every change with sudo ltsp-update-image
13:34
<squoter>
i check now
13:35
not nbd
13:35
<gbaman>
hmm
13:36
<squoter>
gbaman, i'm school teacher, i don't know so much about linux(
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13:37
<gbaman>
Either do I :)
13:37
and also, so am I, sort of :)
13:37
hmm
13:37
normally epoptes just works out of the box..
13:38
<squoter>
yes, i read this((
13:39
<gbaman>
hmm
13:39
the clients log in fine, right?
13:40
<squoter>
yes
13:40
now i check remove keys
13:40
maybe problem in this
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13:44
<gbaman>
hmm
13:45
maybe try apt-get purge epoptes-client on the client chroot
13:46
and reinstall it from scratch?
13:46
<squoter>
okay, i check now
13:46
<gbaman>
*just epoptes, not the entire client
13:46
<squoter>
thank you
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14:13
<squoter>
guys
14:13
in 9 pc's epoptes works fine
14:13
in 1 - not working
14:13
anyone can help?
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18:31
<gbaman_>
sigh, this really is not working..
18:32
I need all my users to have sudo use on the ltsp clients
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18:33
<gbaman_>
issue is, it seems by default, when using gnome-control-center user management it ignores the default group setting in adduser.conf..
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19:37
<alkisg>
gbaman_: why do you want sudo on the clients?
19:37
<gbaman_>
to give them access to the GPIO pins on the Raspberry Pi
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19:46
<slackish>
This is super dangerous.. so use at your own will. Put this in your sudoers file: "ALL ALL=NOPASSWD: ALL"
19:46
I would never do that on _ANY_ of my machines
19:50
<||cw>
why not just set the permissions correctly...
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19:53
<||cw>
http://dissectionbydavid.wordpress.com/2013/10/21/raspberry-pi-using-gpio-wiringpi-without-root-sudo-access/
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19:57
<gbaman_>
||cw: because I want it to be the same as a Raspberry Pi, which the default user has sudo access
19:57
<alkisg>
gbaman_: ls -lh /dev
19:58
You want them to have access to which device there?
19:58
<gbaman_>
?
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19:58
<gbaman_>
yes
19:58
<alkisg>
*which*?
19:58
Not "yes"...
19:58
<gbaman_>
oops, one sec
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20:00
<alkisg>
(giving them root access is not a good thing because they'll be able to do anything then, e.g. install keyloggers...)
20:00
(better give them access to usb or serial or whatever devices only)
20:01
<gbaman_>
oops, wrong place, /sys/devices/virtual/gpio
20:02
brb
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20:03
<gbaman>
back
20:03
<||cw>
gbaman: what the use case? programming rpi class? why not just boot local?
20:04
if you want it to be the same, then do it the same
20:04
<alkisg>
http://stackoverflow.com/questions/12133860/accessing-the-gpio-of-a-raspberry-pi-without-sudo
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20:33
<alkisg>
!learn sudoers as Not recommented for security reasons: RCFILE_01="echo USER ALL=NOPASSWD: /path/to/program >> /etc/sudoers". USER and /path/to/program can also be ALL.
20:33
<ltsp_>
The operation succeeded.
20:33
<alkisg>
!sudoers | echo gbaman:
20:33
<ltsp_>
gbaman: sudoers: Not recommented for security reasons: RCFILE_01="echo USER ALL=NOPASSWD: /path/to/program >> /etc/sudoers". USER and /path/to/program can also be ALL.
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20:43
<vagrantc>
alkisg: whhere are we at with ltsp 5.5.1?
20:43
<alkisg>
Hi vagrantc
20:43
<vagrantc>
alkisg: no time? should i just release what we have so far?
20:44* alkisg has been pretty busy the last days, yeah... it's a bit better now
20:44
<alkisg>
...trying to remember where we were...!!!
20:44
!alkisg-todo
20:44
<ltsp_>
alkisg-todo: (#1) upload fixed nbd-server package in the PPA, or (#2) LDM password hash, or (#3) Check ltsp bugs in debian.org, or (#4) ltsp-config aoe (for swap too), or (#5) Hooks for running scripts on these phases: INITRD/INIT/RC/DM/AUTH/LOGIN/SESSION/PERIODIC/LOGOUT/SHUTDOWN, or (#6) "support logind for fat clients"
20:44
<alkisg>
!forget alkisg #1
20:44
<ltsp_>
Error: There is no such factoid.
20:44
<alkisg>
!forget alkisg-todo 1
20:44
<ltsp_>
The operation succeeded.
20:45
<alkisg>
!forget alkisg-todo 3
20:45
<ltsp_>
The operation succeeded.
20:45
<alkisg>
!forget alkisg-todo 2
20:45
<ltsp_>
The operation succeeded.
20:45
<alkisg>
!alkisg-todo
20:45
<ltsp_>
alkisg-todo: (#1) LDM password hash, or (#2) Hooks for running scripts on these phases: INITRD/INIT/RC/DM/AUTH/LOGIN/SESSION/PERIODIC/LOGOUT/SHUTDOWN, or (#3) "support logind for fat clients"
20:45
<alkisg>
#3 is the most urgent one
20:46
Because without it usb sticks etc won't work for fat clients
20:46
<vagrantc>
it's apparently more important for debian now... seems like systemd will be the default...
20:46
<alkisg>
Fortunately Ubuntu will follow too... :)
20:47
<vagrantc>
really?
20:47* vagrantc is amazed
20:47
<alkisg>
Yeah, Shuttleworth announced it the day after it was decided for jessy
20:48
<vagrantc>
by decree
20:48
<alkisg>
Ubuntu is mostly focused on phones right now, so it'd be best if they dropped most of their .diffs from Debian :)
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20:48
<alkisg>
So anyway, about LTSP again, I think I can work on #3 tomorrow
20:48
Is that OK?
20:49* vagrantc forgets when the ubuntu feature freeze is
20:50
<alkisg>
https://wiki.ubuntu.com/TrustyTahr/ReleaseSchedule, Feb 20th
20:50
<stgraber>
this Thursday
20:50
well, tomorrow
20:50
<vagrantc>
apparently it's *now*
20:50
<alkisg>
Maybe we could publish what's already committed upstream, and get logind support as a bug fix?
20:50
<vagrantc>
there are some fairly important issues to fix still
20:51
the main upstream fix that's needed is the symlinks for ltsp-pnp support?
20:51
<alkisg>
Yes
20:51
<vagrantc>
and that vesioning mess
20:51
i've got a workaround for the versioning problems
20:52
although the ltsp-build-client manpage still needs a fix to get plugins from the appropriate vendor
20:52
<alkisg>
And nbd-disconnect should work in more cases now
20:52
<vagrantc>
i honestly haven't touched any of this for a week or two
20:52
<alkisg>
stgraber: if we do an ltsp release today or tomorrow, will you have time to sync it before FF?
20:53
<vagrantc>
stgraber: so as long as you're fixing bugs, it doesn't matter if the feature freeze is over, yes?
20:53
cuz i think we have all the features in
20:54
<alkisg>
(should I also enable translation commits today, to have them ready before tagging a new version? I think that launchpad will commit them in ...5 hours from now)
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21:14
<stgraber>
vagrantc: correct
21:15
alkisg: I'm slightly busy with the LXC 1.0 release due tomorrow but I should be able to do a quick merge of LTSP before FeatureFreeze or I'll just grant myself an exception and do it slightly after the freeze
21:15
<alkisg>
Nice, I'll try to commit a fix for logind tomorrow
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