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


Channel log from 25 January 2014   (all times are UTC)

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16:34
<sparticle_>
Anyone around?
16:37
Looking for some pointers and clarification on installing ltsp on our existing vm host server Ubuntu 12.04.3 it already has DNS DHSCP and TFTP servers running.
16:38
Sorry DNS and TFTP Servers DHCP is Provided by another server. Read lots of documentation but nothing to give me a guid to installing on my config. I.e. existing external DHCP and local TFTP server
16:45
we already use this server as a PXE boot host to boot variuos system recovery and Disk sanitising tools.
16:46
<alkisg>
!proxydhcp
16:46
<ltsp`>
proxydhcp: A proxy DHCP server is defined by the PXE specification as a server which sends auxiliary boot information to clients, like the boot filename, tftp server or rootpath, but leaves the task of IP leasing to the normal DHCP server. More info: https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP
16:46
<alkisg>
!windows-dhcp
16:46
<ltsp`>
Error: "windows-dhcp" is not a valid command.
16:46
<alkisg>
!windows
16:46
<ltsp`>
Error: "windows" is not a valid command.
16:47
<alkisg>
OK google that one too... :)
16:47
https://help.ubuntu.com/community/UbuntuLTSP/LTSPWindowsDHCP
16:48
<sparticle_>
Yes read those already. Our PXE boot environmetn works perfectly can I just put this image in the tftp root with all the other images
16:48
the image created by ltsp-server
16:49
<alkisg>
Ah, sorry I misunderstood
16:49
Then you just need the ltsp-server package, not ltsp-server-standalone
16:50
<sparticle_>
apt-get install debconf-utils ldm-server ltsp-server ltspfs nbd-server openbsd-inetd squashfs-tools tftpd-hpa
16:50
is what gets installed by default
16:50
when installing ltsp-server
16:51
<alkisg>
You don't need tftpd-hpa though, you can remove it
16:51
<sparticle_>
ah ok.
16:51
<alkisg>
--no-install-recommends might help :)
16:51
What tftp server do you have?
16:51
<sparticle_>
OK. Where is the system image that ltsp-server creates. Will it put it automatically in the tftp root?
16:52
<alkisg>
tftpd-hpa | atftpd | dnsmasq ==> none of those?
16:52
It's served via NBD, it puts it in /opt/ltsp/images
16:52
<sparticle_>
yes tftpd-hpa .. let me check
16:52
<alkisg>
It only needs the kernel/initrd and lts.conf in tftp, not the whole image
16:52
If you already have tftpd-hpa, why did it prompt you to install it?
16:53
<sparticle_>
I used -s to simulate an install
16:53
<alkisg>
I thought you already had that though
16:53
dpkg -l tftpd-hpa
16:54
<sparticle_>
debconf-utils fuse-utils ldm-server ltsp-server ltspfs nbd-server openbsd-inetd squashfs-tools
16:54
is what i get on the server
16:54
<alkisg>
Yup that sounds better :)
16:55
<sparticle_>
so will the ltsp-server install screw up anything on this server or does it just create a chroot environment
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17:11
<alkisg>
The chroot environment is created after the installation, when you run ltsp-build-client
17:11
So no it won't screw anything...
17:16
<sparticle_>
OK. Many thanks for taking th etime to respond and clarify some things. I will give it a try. Sobuikding the clkient is what creates the image in /opt/ltsp/images
17:16
sorry small keyboard :)
17:19
<alkisg>
Yes, ltsp-build-client
17:19
!docs
17:19
<ltsp`>
docs: For the latest community documentation, see the LTSP wiki at http://wiki.ltsp.org/ For a PDF with official documentation, see https://sourceforge.net/apps/mediawiki/ltsp/index.php?title=Ltsp_LtspDocumentationUpstream
17:20
<sparticle_>
If I built a VM for the LTSP server could I still boot it from the existing PXE boot environment. Maybe do a per MAC address config in the DHCP server so that the LTSP clients did not see the existing menu from our TFPT server
17:20
OK I have read al ott recently on this. I will read through again but it is all geared towards new installs
17:21
I have to try and make this work in an existing environment without breaking anything :)
17:22
I had hoped it would be a simple as installing ltsp-server and then copying the pxelinux.o and config files to the tftp server
17:23
Creating anew menu option say LTSP Clent and then copying the linux kernel etc into that.
17:23
<alkisg>
install ltsp-server, run ltsp-build-client, copy tftp
17:24
<sparticle_>
Can't find any docs detailing the PXE boot entries on the TFTP server
17:25
<alkisg>
There isn't much documentation due to lack of manpower
17:26
Standard pxelinux docs apply though
17:26
<sparticle_>
Thats what I found.
17:26
Any idea what the PXER boot entries might look like
17:27
<alkisg>
append ro initrd=initrd.img-generic init=/sbin/init-ltsp root=/dev/nbd0
17:27
Just install it, it'll be quicker than all your searching :)
17:27
<sparticle_>
# Boot the entire CloneZilla ISO over PXE. LABEL clonezilla_iso MENU LABEL CloneZilla ISO LINUX /pmagic/memdisk INITRD /clonezilla/clonezilla-live-20131125.iso APPEND iso vmalloc=256M
17:28
I will builld a new 12.04.3 server VM and try to get that working. It will runs its own tftpd server then
17:29
all defaults. I can then work out how to map existing home dirs etc from the network later
17:29
Its for a small school lab environment
17:29
<alkisg>
Don't worry ltsp-server is not intrusive
17:30
sparticle_: what are the client specs? cpu, ram?
17:31
<sparticle_>
3-5 yr old machines. 1GB - 2GB ram. P4 2.8-3.2 and Cor3Duo
17:31
sorry core2duo
17:31
<alkisg>
Schools need multimedia, they'll work better as fatclients
17:31
!ltsp-pnp
17:31
<ltsp`>
ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
17:31
<sparticle_>
nvidia cards soundcards etc
17:32
Ah. We wanted to remove HDD's and just repouprse these machines
17:33
They would then run rdp clients to get to some of the network apps in the windows servers.
17:33
<alkisg>
Yes, ltsp fat clients don't need hard disks
17:33
Wait, you don't need linux desktop at all, just rdp to windows?
17:35
<sparticle_>
Ah ok. I will look at that. I presume they would take longet to load. Yes, we want to migrate to Ubuntu on the desktop rather than windows, but we have some apps that don't have linux replacements we will look at using wine as well
17:36
<alkisg>
No they don't take longer to load, ~30 seconds
17:36
<sparticle_>
To run some of the apps if we can. And eventually move to OSS on all the apps. This is a POC really to prove effectiveness and some 6th formers to test
17:36
Like SIMS arrrrggghhhh!
17:37
moodle etc is all web so no problems there.
17:37
All need to be on the same subnet though.
17:38
So no 2 nic setup etc. We have a GB network
17:39
<alkisg>
Sounds pretty easy
17:40
ltsp-pnp should be perfect for your setup
17:40
Start a VM and follow the ltsp-pnp wiki page
17:40
Single NIC, bridged
17:45
<sparticle_>
That appears to install local DHCP server. Obviouls y in our detup we already have a DNS server SHCP server and TFTP server. I get that we sould use the TFTP server in the LTSP Server VM and point teh MAC sepcific clients at the LTSP TFTP server
17:46
BU creating MAc address entries in the existing DHCP server for all of the LTSP client machines and give them a different TFTP server than our existing PXE boot environment
17:47
<alkisg>
It doesn't install a dhcp server, it installs a proxy dhcp server
17:47
<sparticle_>
i.e. root path, boot file, boot server
17:47
<alkisg>
But you can change the dnsmasq setup to whatever you like...
17:47
Or even disable its dhcp services completely
17:48
Keeping the tftp in the VM is better
17:48
(dnsmasq is tftp server too)
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17:48
<alkisg>
Anyway, it shouldn't take more than 30 minutes to set it up after you've downloaded the .iso, so just try it
17:48
<sparticle_>
Ues I see that would help. I think part of this is creating the DHCP MAC address reservations on our existing DHCP server to point at the LTSP VM
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17:49
<sparticle_>
OK time to get on with it I think. Many thanks for your help
17:49
<alkisg>
You're welcome
17:49
<sparticle_>
Ciao! for now
17:50
Ah. Stupid questionprobably, but I am assuming I would need to create a desktop environment on the server before installing LTSP server. We use Gnome
17:52
<ogra_>
questionprobably ... sounds like a tabletop game :)
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17:53
<sparticle_>
:)
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17:54
<ogra_>
(and yes ... to your question ... LTSP fires up an X session on the server on login, if there is no desktop session it will fail)
17:55
<sparticle_>
Duh! Like I said stupid question
17:55
OK. Onwards. Ciao!
17:59
<Hyperbyte>
HI!
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18:12
<alkisg>
sparticle_: start with the desktop.iso... read the ltsp-pnp page
18:15
<Hyperbyte>
alkisg, y u not say teh hi 2 me. :(
18:28* alkisg hugs Hyperbyte! for i in `seq 1 100`; do echo hi > Hyperbyte; done :)
18:29
<highvoltage>
heh
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