IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 29 March 2011 (all times are UTC)
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| 00:25 | <gnunux> hi
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| 01:57 | Stef (~Stefan@19.247-201-80.adsl-static.isp.belgacom.be) joined #ltsp. | |
| 01:58 | <Stef> Hello
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| 02:01 | I have a little problem installing LTSP. I'm working on an Edubuntu system. LTSP worked properly until I installed and LDAP client on my LTSP-server. When I boot a client now, I get the "failed to connect NBD-server" error. Does anybody has an idea how to solve this?
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| 02:14 | <alkisg> Stef: ldap shouldn't have anything to do with nbd connection errors
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| 02:14 | DId you run ltsp-update-image ?
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| 02:16 | <alkisg> Stef: so anyway here are some commands to troubleshoot this:
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| 02:16 | grep nbd /etc/inetd.conf /var/lib/tftpboot/ltsp/*/pxelinux.cfg/default
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| 02:16 | ls -l /opt/ltsp/*/images/*.img
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| 02:16 | grep pxelinux /etc/ltsp/dhcpd.conf
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| 02:16 | <Stef> Yes, it worked properly before, I'm only having this problem since I installed Ldap-client
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| 02:17 | ok, thx :)
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| 02:17 | <alkisg> Paste the output of those commands to pastebin
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| 02:28 | <Stef> http://pastebin.com/41JC1DfP
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| 02:28 | that's the output
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| 02:29 | <alkisg> Stef: when the client tells you "failed to connect to the nbd server", does it give you a busybox shell?
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| 02:29 | <Stef> yes, it does
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| 02:30 | <alkisg> On that prompt, try: nbd-client server-ip 2000 /dev/nbd0
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| 02:30 | Put your server-ip there
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| 02:30 | What does it tell you?
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| 02:30 | dlezcano (~dlezcano@nat/ibm/x-huplngtkbazpprpq) joined #ltsp. | |
| 02:32 | <Stef> Negotiation: ..size = 556188KB bs=1024, sz=556188
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| 02:32 | <alkisg> Stef: which edubuntu version are you using?
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| 02:32 | 10.04?
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| 02:32 | <Stef> yes
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| 02:32 | <alkisg> And does this problem happen every time?
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| 02:33 | <Stef> yes
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| 02:33 | <alkisg> OK, a last try before I tell you the fix
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| 02:33 | sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 02:33 | See "quiet splash" in a line in that file?
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| 02:34 | <Stef> yes
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| 02:34 | <alkisg> Replace them with "break=mount", so the line reads:
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| 02:34 | append vmlinuz ro initrd=initrd.img break=mount nbdport=2000
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| 02:34 | Then reboot the client
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| 02:35 | You'll get a busybox shell again, but without errors this time
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| 02:35 | Wait 5 secs
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| 02:35 | Then press Ctrl+D
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| 02:35 | If the client boots, we'll know the problem, so I'll tell you the fix.
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| 02:41 | <Stef> I'm sorry it's going slow, but the server has crashed... and it's booting very slowly
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| 02:47 | now I'm getting a PXE-E32 error
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| 02:47 | on the TFTP
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| 02:48 | <alkisg> Looks like you have more than 1 problems :)
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| 02:48 | Is your server OK now?
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| 02:49 | This will tell you if tftp is running: sudo netstat -nap|grep :69
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| 02:50 | <Stef> well, I found on the internet that it could have been a dhcp problem... So I put it to static, but now it won't make internert connection. But the ltsp-client gives no error on the dhcp, so I guess that won't affect the ltsp-server
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| 02:51 | <alkisg> Please don't follow other advice from the internet while following advice from someone here, as the steps get mixed up
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| 02:51 | <Stef> ok, I'm sorry, it was before I was here :)...
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| 02:52 | <alkisg> So, there are 4 problems now?
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| 02:52 | <Stef> but the command saus udp 0 0. 0.0.0.0:69 0.0.0.0:* 1016/in.tftpd
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| 02:52 | <alkisg> Server crashing, can't access internet, tftp problem, and nbd problem?
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| 02:53 | <Stef> the server crash is not a real problem... that was because he couldn't contact our ldap server and that doesn't work out very well
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| 02:53 | <alkisg> Should we start from the internet access, so that you can use pastebin etc?
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| 02:55 | * alkisg needs to leave in 10'... | |
| 02:55 | <Stef> or, I am configuring a second computer now which is almost ready installing Edubuntu... I could install it and come back later?
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| 02:55 | might be a bit easier for everyone :)
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| 02:56 | <alkisg> What's your end goal? To have the server working or the other computer working?
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| 02:56 | Of course you can ask in the channel any time, don't worry about that
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| 02:56 | <Stef> I am making a test system, so at the moment I just am trying to get everyting work together. So I thought it might be easier to start from a clean system
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| 02:57 | without the dhcp-problems and so
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| 02:57 | <alkisg> The dhcp /networking/tftp problems can be easily solved by modifying 3-4 files
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| 02:58 | You just need to cleanly state what you want to do, and what's your current configuration
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| 02:59 | <Stef> oh ok, no problem for me if it is easy to solve, but I am pretty new to linux (I'm a student on internship)...
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| 03:01 | but currently, I have an LDAP server that also has a DHCP-server which is connected via the network to our LTSP-server. And the LTSP-server is of course connected with my thin clients
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| 03:02 | <alkisg> single nic or 2 nics?
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| 03:03 | <Stef> only 1 is connected, but I have a second one available
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| 03:04 | but I'm not using that one
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| 03:05 | <alkisg> You'll need to disable the dhcp server on ltsp then
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| 03:05 | You can't have 2 dhcp servers on the same network without special care
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| 03:05 | bbl
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| 03:06 | <Stef> ok
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| 03:08 | ok, it's not running anymore
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| 03:10 | that solved the internet problem too
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| 03:15 | and the TFTP problem is gone too, now I'm back to the busybox
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| 03:18 | and when I try the ctrl + D I still get the 'failed to connect to nbd server'.
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| 03:19 | When I do it a second time it gives some mount errors (no such file or directory) and no init found
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| 03:31 | <alkisg> Stef: let's start with your dhcp server
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| 03:31 | Did you modify the dhcp server on the ldap server, to point the ltsp clients to your ltsp server?
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| 03:31 | <Stef> no
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| 03:32 | <alkisg> As I said, you can't have 2 dhcp servers on your network (usually)
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| 03:32 | <Stef> so, it might be better to use my second NIC for the ltsp?
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| 03:33 | <alkisg> So, one proper way to solve that problem is to add "boot filename" and "next-server" to that dhcp server, and remove the dhcp server on your ltsp server
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| 03:33 | Another way is to use a proxydhcp on the ltsp server
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| 03:33 | And of course you can use 2 NICs on the ltsp server and have the ltsp clients on a separate subnet
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| 03:33 | Select one of the 3 options above
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| 03:35 | <Stef> I have the ldap-server on the eth0 and ltsp-server on eth1
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| 03:37 | <alkisg> I'm not sure I follow. Didn't you say the ldap server is on a different machine than the ltsp server?
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| 03:38 | <Stef> yes, but I have connected my ldapserver with a switch and then to my eth0 port on my LTSP-server
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| 03:39 | and then my ltsp-clients are connected by the eth1 port
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| 03:40 | <alkisg> 2 nics where? On the ldap server or the ltsp server?
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| 03:40 | Because on the ltsp server you said you only use 1 nic
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| 03:40 | <Stef> ltsp
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| 03:41 | I only used one, but I had 2
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| 03:41 | <alkisg> (01:03:57 PM) Stef: only 1 is connected, but I have a second one available
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| 03:41 | (01:04:14 PM) Stef: but I'm not using that one
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| 03:42 | Right. So when you switched to using both nics, well, you should have said it...
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| 03:42 | OK so you chose option 3 above
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| 03:42 | <Stef> yes
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| 03:42 | <alkisg> So the ltsp clients connect to a switch where eth1 of your ltsp server is also connected
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| 03:42 | But that switch is isolated from the rest of your network, right?
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| 03:42 | <Stef> yes
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| 03:43 | <alkisg> OK. What is your current problem?
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| 03:44 | <Stef> when I boot the client now, I first get the PXE-E11: arp timeout and then PXE-E38 that it can't open the connection
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| 03:45 | that's tftp
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| 03:45 | I guess
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| 03:45 | <alkisg> Here's a guide for tftp troubleshooting: https://help.ubuntu.com/community/UbuntuLTSP/Troubleshooting/TFTP
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| 03:49 | <Stef> seems like I'm missing the lts.conf file in /var/lib/tftpboot/ltsp/i386
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| 03:53 | but, there is no tftp file in the srv directory
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| 03:59 | <alkisg> Both are normal, no lts.conf by default and no /srv directory
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| 04:03 | <Stef> then everthing seems allright, the tftpd-hpa service is runningn, all tftp files are there, and I'm using the default dhcpd.conf file
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| 04:03 | and my client has PXE-boot (so gPXE isn't really needed)
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| 04:03 | <alkisg> Did you try to access the tftp files from an external client?
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| 04:05 | <Stef> not yet, I have set up a computer for that :)... brb
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| 04:06 | <alkisg> Also, the role of gpxe in this wiki page is not to replace pxe
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| 04:07 | It's to help you troubleshot, because it shows a list of values returned by the dhcp server, it allows for external tftp testing etc
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| 04:07 | It has a command line. Plain PXE doesn't have one.
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| 04:08 | <Stef> the tftp client does respond
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| 04:09 | I'll try the gpxe now
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| 04:10 | <alkisg> So you were able to download pxelinux.0 from an external client? Weird. Yes, gpxe is the correct next step for that case.
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| 04:11 | <Stef> yes, it did everything exactly like in the troubleshoot from help.ubuntu
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| 04:14 | <alkisg> OK, try to boot the client with gpxe and see what it tells you
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| 04:14 | Nick change: zz_evil_root -> evil_root | |
| 04:14 | <Stef> I tried that gpxe on a client and now it just goes to the busybox shell without giving an error
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| 04:14 | <alkisg> Wait
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| 04:14 | So real pxe clients do not boot, but with gpxe they boot?
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| 04:15 | (busybox etc are problems for later, unrelated to tftp)
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| 04:17 | <Stef> that's what it seems like yes... the pxe client still gives me the same error on tftp, and my gpxe client booted until the busybox
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| 04:17 | I'll try changing the cd
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| 04:18 | <alkisg> Then you probably still have networking issues with dhcp, switches etc
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| 04:22 | <Stef> I tried the Gpxe on the client I was using the whole morning, and it still gives me the tftp error (although it has receive a ip from my dhcp-server) wihle the other client that I just connected to my network works fine
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| 04:24 | <alkisg> Just to be sure. So, you have a switch with exactly 3 cables on it, 1=ltsp eth1, 2=the client with the tftp problem, and 3=the client that works?
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| 04:24 | No other cables in that switch whatsoever?
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| 04:25 | (that could somehow chain the 2 dhcp servers together, and cause chaos...)
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| 04:27 | <Stef> I just noticed something weird, I needed my internet cable to test that tftp cable... and I probably pulled it out too late. So when it's plugged in to the network, it boots the pxelinux file
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| 04:27 | but when it's ruled by the ltsp dhcp-server
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| 04:27 | it doesn't work
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| 04:29 | <alkisg> OK, that sounds more logical
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| 04:29 | Press ctrl+b in gpxe to get a command line
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| 04:29 | write "dhcp net0" to get an ip
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| 04:29 | then write "config" to see the values you got
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| 04:29 | and pastebin your /etc/network/interfaces and /etc/ltsp/dhcpd.conf from your ltsp server.
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| 04:32 | (your problem is probably in one of those 2 files)
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| 04:33 | <Stef> i guess it'll be the network/interfaces, I was really strugling with the dhcp and internet. Everytime i gave it static ip my eth port just dissapeared form my desktop en refused to connect again
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| 04:34 | <Stef> http://pastebin.com/764xKmaG
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| 04:37 | <Stef> and my pxeconfig file
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| 04:38 | http://pastebin.com/wg3HLuRb
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| 04:49 | <pmatulis> is it frowned upon to upgrade server packages (ubuntu) from a thin client?
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| 04:50 | <alkisg> pmatulis: no, since you're on the server
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| 04:50 | (when working normally on the thin client)
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| 04:51 | <pmatulis> alkisg: alright, i thought there might be some subtle difference when performing an upgrade
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| 04:51 | <alkisg> Stef: run this on your ltsp server: ip -oneline -family inet addr show
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| 04:52 | pmatulis: I've heard problems of upgrading through a chroot, but I've never heard problems of upgrading via ssh (which the thin client connection is)
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| 04:52 | <Stef> eth0: inet 192.168.0.185/25 brd 192.168.0.255 scope global eth0
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| 04:52 | eth1 inet 192.168..0.126/24 brd 192.168.0.255 scope global eth1
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| 04:53 | <alkisg> Ah that's the problem
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| 04:53 | Don't put two nics on the same subnet
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| 04:53 | <Stef> so I edit my dhcpd.conf to another subnet?
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| 04:53 | <alkisg> Use 192.168.0.x and 192.168.1.x
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| 04:53 | And change your static IP on eth1, yes
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| 04:53 | Wait
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| 04:53 | How did you put a static IP on eth1?
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| 04:54 | With network manager? Or you're using a dynamic IP?
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| 04:54 | <Stef> it's dynamic now
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| 04:54 | <alkisg> Then your cables are STILL worng
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| 04:54 | wrong
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| 04:54 | If it's connected to a switch with only the ltsp clients, it shouldn't be able to get a dynamic IP
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| 04:55 | If it gets a dynamic IP, then your networkin cabling is still wrong
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| 04:55 | It's the first step. Choose an option, you chose option 3. You still haven't done that.
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| 04:56 | ***if you don't know how it got an IP, then perhaps it got an IP *before* you removed the "internet cable" you were talking about
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| 04:56 | <Stef> the network cable is out... there are only 3 cables leaving the ltsp-switch
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| 04:58 | solved the problem, it still had its ip form last time I booted the server
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| 04:58 | alkisg1 (~alkisg@ubuntu/member/alkisg) joined #ltsp. | |
| 04:59 | <alkisg1> You need to put a static ip in eth1
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| 04:59 | <Stef> i gave it 192.168.1.1 now
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| 05:00 | <alkisg1> Either from network-manager, or from /etc/network/interfaces
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| 05:00 | OK, update your dhcpd.conf
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| 05:00 | <Stef> i went via network-manager
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| 05:00 | <alkisg1> And restart dhcp: sudo service dhcp3-server restart
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| 05:01 | alkisg (~alkisg@ubuntu/member/alkisg) left irc: Read error: Connection reset by peer | |
| 05:01 | Nick change: alkisg1 -> alkisg | |
| 05:03 | <Stef> ok that's done
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| 05:04 | <alkisg> OK, boot clients and see what they do
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| 05:05 | <Stef> now they both go to the busybox shell
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| 05:06 | <mgariepy> good morning everyone
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| 05:06 | <alkisg> Stef: ok, now see back in the logs what I was saying with break=mount
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| 05:06 | Good morning mgariepy
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| 05:09 | <Stef> it's booting now
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| 05:10 | <alkisg> Since you changed your server IP, you might have problems logging in
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| 05:11 | You'll probably need to run: sudo ltsp-update-sshkeys && sudo ltsp-update-image
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| 05:13 | <Stef> that's right... i'm unable to login... now running the commands
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| 05:16 | ok, it's working :)
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| 05:21 | is there a way to avoid that busybox? or is that normal?
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| 05:37 | <pmatulis> are there any consequences of upgrading your server but neglecting to upgrade the chroot?
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| 05:38 | <muppis> pmatulis, generated random errors for me.
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| 05:38 | From 10.04 to 10.10
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| 05:40 | <pmatulis> muppis: i'm talking inter-release upgrades
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| 05:40 | (ubuntu)
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| 05:41 | <muppis> Then should be fine, I think.
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| 05:41 | Nick change: _UsUrPeR__ -> _UsUrPeR_ | |
| 05:42 | <alkisg> Stef: so now it's only working when you press ctrl+d?
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| 05:43 | Stef: if so, you need to update your ltsp_nbd script, and regenerate the initramfs
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| 05:43 | roasted (~Jason@c-174-54-217-48.hsd1.pa.comcast.net) joined #ltsp. | |
| 05:46 | <alkisg> Stef: you can download the newest version for that file here: http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/view/head:/client/initramfs/scripts/ltsp_nbd
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| 05:46 | The bug you see was fixed here: http://bazaar.launchpad.net/~ltsp-upstream/ltsp/ltsp-trunk/revision/1777
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| 05:46 | <Stef> ok, thanks, I didn't know there was a site for it :)
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| 05:58 | <Stef> to regenerate the initramfs... can I use the update-initramfs command?
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| 05:58 | <HrdwrBoB> yes
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| 05:58 | <Stef> thanks :)
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| 05:59 | <HrdwrBoB> although i built it by hand once
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| 05:59 | before I worked out that command existed
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| 05:59 | <Stef> nice :)... I'm not really a linux pro, so I guess i'll stick with the command ^
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| 05:59 | ^^
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| 06:00 | <HrdwrBoB> heh
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| 06:02 | Gadi (~romm@ool-18bbe47a.static.optonline.net) joined #ltsp. | |
| 06:03 | <Stef> might be a stupid question, but wicht option should I use? I tried the -u (which updates the existing initramfs) but I still go to the busyshell
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| 06:26 | <Roasted__> gmorning
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| 06:37 | <Roasted__> seems as if the time issue is still an issue
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| 06:38 | I put in our time server. I put in the time zone. I updated the chroot. I installed ntp on the server and chroot.
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| 06:38 | I have absolutely no idea what else I can do. :(
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| 06:43 | <Lumiere> Roasted__: did you get the ntpd to start on boot?
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| 06:43 | <Roasted__> would that be listed under service--status-all?
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| 06:44 | <Lumiere> also what tz are you in / how far off is the time
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| 06:44 | <Roasted__> service --status-all*
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| 06:44 | US Eastern
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| 06:44 | Some are dead on
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| 06:44 | others are up to 3 hours off (earlier)
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| 06:44 | 4 hours, Im sorry
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| 06:44 | <Lumiere> clients?
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| 06:44 | <Roasted__> fat clients
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| 06:44 | <Lumiere> the ones off by 4
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| 06:44 | are probably set to UTC
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| 06:44 | <Roasted__> where are they "set" at
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| 06:44 | I thought if I put the time zone under [Default] in lts.conf they ALL should grab it
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| 06:45 | <Lumiere> the system clock
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| 06:45 | probably needs to be set
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| 06:45 | setting up ntp on the server sets it for the server
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| 06:45 | but not the clients
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| 06:45 | <Roasted__> what's funny is, if I set lts.conf to be US/Pacific, I get Pacific time
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| 06:45 | but not on all of them
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| 06:45 | I just thought defaulting it would, you know.. default them
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| 06:47 | hang on a second
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| 06:47 | my 1 box who pulled a 5am time now changed to 9am
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| 06:47 | wonder if it takes a second...
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| 06:47 | <Lumiere> it can
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| 06:47 | <Roasted__> going to boot up the rest of the lab and see
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| 06:47 | <Lumiere> if ntp is running on the clients
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| 06:47 | it takes up to 2-3 hours to move
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| 06:48 | <Roasted__> to move?
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| 06:48 | as in grab the proper time?
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| 06:48 | <Lumiere> from current time to new
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| 06:48 | yea
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| 06:48 | <Roasted__> ah
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| 06:48 | Lumiere, is this correct in my lts.conf
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| 06:48 | [Default]
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| 06:48 | TIMEZONE=US/Eastern
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| 06:48 | <Lumiere> should be
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| 06:48 | <Roasted__> SHOULD my clients get the eastern time zone?
| |
| 06:48 | okay
| |
| 06:48 | cause I was first told America/New_York, and that didn't work. But I tested it using US/Pacific vs US/Mountian US/Central US/Eastern last night, and those all worked fine.
| |
| 06:49 | that's why I thought BAM - we got this. But when I came in here and I still got different times I was a little bummed.
| |
| 06:49 | <Lumiere> ntp isn't an instant deal
| |
| 06:50 | <Roasted__> all right
| |
| 06:50 | yeah almost all of my newly booted clients are getting the wrong time
| |
| 06:50 | at least I know it isnt instant so I can be patient though
| |
| 06:50 | should they get the new time on the login screen if I let them sit? Or would I need to reboot?
| |
| 06:53 | <Lumiere> it should update without you doing anything
| |
| 06:54 | <Roasted__> okay
| |
| 06:54 | yeah Im seeing it now
| |
| 06:54 | half the lab is on the right time
| |
| 06:54 | appreciate it bro!
| |
| 06:55 | is it likely theyll boot each time with the proper time now?
| |
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| 07:05 | <rad4Christ> Hey guys. A while back I implemented an LTSP server/network in a public middle school in SC. Just wanted to drop in and say a state agency took notice, and will be doing a nationwide case study on us in the fall!
| |
| 07:05 | so thanks for all the help making it happen and I hope it spreads!
| |
| 07:06 | <Roasted__> glad to hear that rad4Christ
| |
| 07:06 | I'm actually deploying an LTSP lab today. I work in a school district.
| |
| 07:06 | But I have to agree, these guys in here were a huge help to me, and I know I was a total PITA. :P But I can't appreciate their help enough.
| |
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| 07:07 | <rad4Christ> Aesome Roasted__. We have it in our media center right now, but I'm planning to use LTSP in all our labs, with rdesktop connections to our Windows TS for certain apps/testing.
| |
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| 07:19 | <Roasted__> good deal rad4Christ
| |
| 07:19 | its definitely an interesting setup
| |
| 07:20 | we have students in here now trying it out for the first time. already I'm getting comments about the login speed.
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| 07:26 | <rad4Christ> The PCs we used were very old. And when we moved over to it, the difference was night and day
| |
| 07:26 | For me, I'm running 30+ clients and only utilizing about 3GB at peak.
| |
| 07:27 | That's pretty nice.
| |
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| 07:27 | <rad4Christ> I'm actually creating a virtual server for LTSP right now, so I can easily duplicate/deploy.
| |
| 07:28 | <Roasted__> are you running fat or thin clients?
| |
| 07:28 | <rad4Christ> thin for the moment. I had troubles with Firefox running using local resources.
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| 07:29 | It's something I want to work on with the test set up I'm creating.
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| 07:29 | <Roasted__> are you on a windows domain by chance?
| |
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| 08:37 | <tastle73> hi
| |
| 08:38 | I am having a problem with a Acer AL1716 attached to a workstation
| |
| 08:38 | it is not probed successfully and I need to assign refresh rates to it
| |
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| 08:39 | <alkisg> what does xrandr tell you currently?
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| 09:43 | <Roasted_> Is there *no* way at all to recover a session if the connection drops?
| |
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| 09:57 | <abeehc> Roasted_: what are you talking about
| |
| 09:57 | if a client connection drops?
| |
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| 09:59 | <Roasted_> yes abeehc
| |
| 10:01 | <abeehc> i don't know for sure; if it's properly dropped then to my knowledge there's no way to restore
| |
| 10:01 | if it's a short drop most of the time my clients barely hiccup
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| 10:01 | <Roasted_> I just had 2 fat client boxes just freeze
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| 10:01 | for no reason
| |
| 10:01 | just... stop
| |
| 10:01 | and I have no idea why
| |
| 10:01 | and its proving to be frustrating to tell students, oh lol just reboot
| |
| 10:02 | That's why I was curious if there was a way to configure something to hold the connection and restore it properly
| |
| 10:02 | <abeehc> ah no i think for the most part the server does it's best to keepalive as it were but to my knowledge there's not much for a restore as you describe
| |
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| 10:03 | <abeehc> but when you say for no reason; that doesn't seem to imply the network dropped
| |
| 10:03 | <Roasted_> yeahhhhhh
| |
| 10:03 | :(
| |
| 10:03 | this windows integration thing is a headache too
| |
| 10:03 | are you on a windows domain by chance?
| |
| 10:05 | <abeehc> yep
| |
| 10:06 | <Roasted_> youre on thin clients tho
| |
| 10:06 | right
| |
| 10:06 | <abeehc> Yep
| |
| 10:06 | <Roasted_> sigh
| |
| 10:06 | I wish we had the resources for thin
| |
| 10:06 | my thin server has 0 issues
| |
| 10:07 | I'm on the verge of trying to find 6 beefy desktop systems so I can put 1 in each row
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| 10:07 | <abeehc> thin+localapps
| |
| 10:07 | <Roasted_> and run each row off of its own thin client server
| |
| 10:07 | <abeehc> and your server needs not so much power
| |
| 10:07 | <Roasted_> my server only has 2gb of ram
| |
| 10:07 | I'd need to set pretty much everything to be local
| |
| 10:07 | besides
| |
| 10:07 | <NeonLicht> How is your thin server, Roasted_? What specs?
| |
| 10:07 | <Roasted_> someone here told me I'd have the same win domain issues
| |
| 10:07 | <abeehc> really just firefox
| |
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| 10:08 | <abeehc> everything else COULD survive fine in my experience
| |
| 10:08 | <Roasted_> in regard with the authentication problems
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| 10:08 | <abeehc> i'm still thinking pam_mount would get around those to some extent
| |
| 10:08 | <Roasted_> NeonLicht, it has two dual core xeon procs and 2gb of ram
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| 10:08 | <abeehc> if you can pre-mount on the server upon login
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| 10:08 | <Roasted_> abeehc, how do I set pam mount though?
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| 10:08 | <abeehc> and mount under the home dir
| |
| 10:08 | <Roasted_> I just did some reading on it
| |
| 10:08 | but I was still a little gray on it
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| 10:08 | <abeehc> then the fat client would just know about it i suppose and i guess all the ids would line up
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| 10:08 | <Roasted_> have you used pam mount?
| |
| 10:08 | <abeehc> that's cause it's like a black art hehe
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| 10:09 | i'm sure with 1010 its even better
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| 10:09 | <Roasted_> I'm on 10.10
| |
| 10:09 | <abeehc> it's xml based config. i use it currently on thin
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| 10:09 | <Roasted_> oh nice
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| 10:09 | think you could give me a hand setting it up?
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| 10:09 | <abeehc> i'll try my best
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| 10:09 | <Roasted_> well, I'll tell you where I'm at with it
| |
| 10:09 | I have libpam-mount installed in synaptic
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| 10:10 | my storage server is storage01
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| 10:10 | the full path for student shares ist hsi
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| 10:10 | <abeehc> at the same time i don't want to railroad you here
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| 10:10 | but
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| 10:10 | privmsg
| |
| 10:10 | <Roasted_> k
| |
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| 11:11 | <mgariepy> !pxeconfig
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| 11:11 | does pxelinux.cfg/default option documented somewhere ?
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| 11:12 | are pxelinux.cfg/default options documented somewhere ?
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| 11:12 | <knipwim> on the syslinux page?
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| 11:12 | <mgariepy> sorry my bad english ;)
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| 11:12 | i would like the ltsp parameter
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| 11:14 | <knipwim> i don't use a special ltsp parameter in there
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| 11:14 | just the regular initrd and nfsroot stuff
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| 12:32 | <alkisg> mgariepy: are you looking for some specific kernel parameter?
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| 12:41 | <mgariepy> alkisg, i was looking for nbd paramenters
| |
| 12:42 | but i found what was wrong
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| 12:42 | <Gadi> nbdport
| |
| 12:42 | or
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| 12:42 | <mgariepy> wasn't about the parameters :)
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| 12:42 | <Gadi> nbdroot
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| 12:42 | <mgariepy> nbdroot=IP:port
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| 12:42 | <Gadi> yeah
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| 12:42 | <alkisg> The stock nbd parameters are with commas
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| 12:42 | Ours are with colons
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| 12:42 | <mgariepy> yeah
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| 12:43 | the stock nbd s****
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| 12:43 | lol
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| 12:43 | <alkisg> We need to change that with the new nbd version which also supports name-based exports
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| 12:43 | <Gadi> whats a name-based export?
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| 12:43 | u mean hostname?
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| 12:43 | <alkisg> All exports will be served from the same port
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| 12:43 | <mgariepy> image name :)
| |
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| 12:43 | <alkisg> And the client will ask which chroot it wants to connect to
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| 12:44 | Right, image name, but with a header, not full path
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| 12:44 | <mgariepy> or md5sum...
| |
| 12:44 | :)
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| 12:44 | <Gadi> ah
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| 12:44 | u guys have been partying without me
| |
| 12:44 | :)
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| 12:45 | <alkisg> Just keeping up with the new stuff :D
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| 12:45 | <Gadi> this is a new feature of nbd or a new feature of ltsp
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| 12:45 | <alkisg> nbd. But it'd be a shame not to take advantage of it in ltsp
| |
| 12:46 | * Gadi was just wondering if you were just enhancing the ltsp_nbd magic | |
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| 13:59 | <dptech> Hello where can i found documentation for ltsp cluster in Debian ?
| |
| 14:01 | <vagrantc> not sure anyone's using it on debian.
| |
| 14:02 | <dptech> Use on ubuntu only ?
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| 14:03 | <Roasted> vagrantc, did I mention you are the man for helping me yesterday
| |
| 14:04 | <vagrantc> heh
| |
| 14:04 | dptech: as far as i know ... there's probably no technical reason it couldn't run on debian
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| 14:04 | Roasted: did you figure out something workable?
| |
| 14:05 | <Roasted> no
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| 14:05 | you did
| |
| 14:05 | US/Eastern was correct
| |
| 14:05 | America/New_York didn't fly
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| 14:05 | <vagrantc> curious ... either ought to work.
| |
| 14:05 | hm.
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| 14:05 | <alkisg> Both of them are hardlinks to the same file
| |
| 14:05 | <Roasted> America/New_York did nothing
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| 14:05 | unless it takes a while to generate
| |
| 14:05 | and get going
| |
| 14:05 | US/Eastern seemed to sync everything up in 2 minutes or less
| |
| 14:05 | upon boot
| |
| 14:06 | alkisg, I was discussing with another user earlier how I would implement more than 1 LTSP server with use of a Windows DHCP server. Any special tricks?
| |
| 14:06 | <dptech> vagrantc: well, I'm going to see install with packets on Debian. Thanks
| |
| 14:07 | <vagrantc> dptech: let folks know how it goes ... maybe write up a webpage or blog entry or something :)
| |
| 14:07 | <dptech> Roasted: you must take MAC informations in Win... DHCP.
| |
| 14:08 | <Roasted> k
| |
| 14:08 | So I just collect all MACs and within the Win server I can point who goes where and why
| |
| 14:08 | <dptech> vagrantc: okay, where is the favourite blog or webpage for LTSP Cluster ?
| |
| 14:09 | Roasted: Yes!
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| 14:09 | <vagrantc> dptech: don't know really :)
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| 14:10 | <Roasted> Would I have to add an entry in the Win DHCP server for each LTSP server?
| |
| 14:10 | referring to these lines:
| |
| 14:10 | 017 Root Path: /opt/ltsp/i386
| |
| 14:10 | 066 Boot Server Host Name: <ip address>
| |
| 14:10 | 067 Bootfile Name: ltsp/arch/pxelinux.0 # Specify CPU architecture in place of 'arch', for instance 'i386'
| |
| 14:10 | <alkisg> Or in pxelinux.cfg/01-mac-address or in a proxydhcp config file
| |
| 14:11 | <Roasted> what would be optimal?
| |
| 14:11 | <alkisg> Optimal? To make a script that does load balancing :)
| |
| 14:11 | <Roasted> I'm not after load balancing though.
| |
| 14:11 | <alkisg> Btw isn't that what ltsp cluster is for?
| |
| 14:12 | <Roasted> This fat client idea is bombing. Hard. I want to move them to thin clients, but our server isn't powerful enough.
| |
| 14:12 | So I want to add a desktop to each row that is of decent power.
| |
| 14:12 | <dptech> Roasted: you can also use xx:xx:xx:* if same thin clients
| |
| 14:12 | <Roasted> That way there's 5 "servers" in the room that handle all 30 clients.
| |
| 14:12 | 1 per row
| |
| 14:12 | <alkisg> OK, whatever suits your setup
| |
| 14:12 | <Roasted> That said, I would like to make it so all clients in row 3 boot to server 3, etc
| |
| 14:13 | then Ig ot to wondering if ti was even possible with a Win DHCP server to do that
| |
| 14:13 | <alkisg> Sure
| |
| 14:13 | <Roasted> alright, sounds good.
| |
| 14:13 | <vagrantc> using dnsmasq's proxy-dhcp is really simple
| |
| 14:13 | <Roasted> Does the PDF cover this area?
| |
| 14:13 | <alkisg> No
| |
| 14:14 | <Roasted> Is there anything documented that does?
| |
| 14:14 | <dptech> thanks, good bye! 11:13 PM in France
| |
| 14:14 | * vagrantc waves | |
| 14:14 | * alkisg is doing a demo with 6 ltsp servers booted from usb disk on a 25-pc lab this saturday | |
| 14:14 | <alkisg> I've written a page for proxydhcp there: https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP
| |
| 14:14 | And somewhere there is a page for configuring a windows dhcp server
| |
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| 14:14 | <alkisg> There's also the microsoft knowledge base
| |
| 14:15 | <Roasted> this?
| |
| 14:15 | https://help.ubuntu.com/community/UbuntuLTSP/LTSPWindowsDHCP
| |
| 14:15 | <alkisg> I think so. Never used a windows dhcp server.
| |
| 14:15 | <Roasted> k
| |
| 14:15 | sounds good
| |
| 14:15 | thanks bro
| |
| 14:16 | <alkisg> For dnsmasq, the lines look like this:
| |
| 14:16 | dhcp-ignore=#known
| |
| 14:16 | dhcp-host=00:1D:7D:D7:F3:C3,10.11.12.101,client1
| |
| 14:16 | ...
| |
| 14:16 | So each server ignores the clients it doesn't know
| |
| 14:16 | <Roasted> that's different than the link you gave me tho, right
| |
| 14:16 | a different iea
| |
| 14:16 | idea
| |
| 14:16 | <abeehc> more elegant
| |
| 14:17 | <alkisg> It's the same idea, but you also need those 2 additional lines because you have many servers and not just one
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| 14:17 | Try the windows server way first
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| 14:17 | It might be simpler to have all of the mac addresses centralized
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| 14:17 | <vagrantc> ah, true... since you actually need the mac addresses
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| 14:17 | <Roasted> yeah
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| 14:18 | abeehc, then from there I assume is where your lts suggestion comes in
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| 14:18 | <abeehc> nah if you do the windows thing my suggestion no longer makes sense
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| 14:18 | or if you go proxydhcp
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| 14:18 | <vagrantc> proxy-dhcp is great when you don't want to fiddle with the dhcp server, but want to add ltsp to a network
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| 14:18 | <Roasted> ah, I thought I would have them in lts and windows
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| 14:18 | <abeehc> i think the MS kb or a real windows sysadmin could help you with that dhcp
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| 14:19 | <Roasted> abeehc, I'm not the sysadmin, so the real sys admin would be helping me with the windows dhcp thing.
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| 14:19 | <abeehc> but i have no idea still if it's even possible defining scopes or whatever
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| 14:19 | <Roasted> He did before when we implemented LTSP.
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| 14:19 | <alkisg> Roasted: btw for accessing samba shares I thought of another way
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| 14:19 | <Roasted> alkisg, no kidding?
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| 14:19 | <abeehc> Roasted: i gathered that
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| 14:19 | <alkisg> Roasted: to have them mounted from the server when you login with ldm
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| 14:19 | <abeehc> that's what my thought was, alkisg
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| 14:19 | maybe via pam_mount
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| 14:20 | <Roasted> pam_mount looks insanely confusing
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| 14:20 | <abeehc> ? how would you do that?
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| 14:20 | <alkisg> ssh allows for running scripts
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| 14:20 | <Roasted> I could even do it manually just to see if it works
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| 14:20 | <alkisg> Or pam, whatever
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| 14:20 | <Roasted> just manually mount the 4 shares
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| 14:20 | <abeehc> yeah or pam i guess
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| 14:20 | <Roasted> then see what's up @ fat clients
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| 14:20 | if it works I could pursue it more
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| 14:20 | am I accurate on that alkisg ?
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| 14:20 | <abeehc> my impresion is if your daomin user can get the share mounted under the homkedir
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| 14:20 | then the fat client won't care
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| 14:21 | <alkisg> The drawback would be that the data would travel twice
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| 14:21 | windows => ltsp server => fat client
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| 14:21 | But shouldn't be a big problem
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| 14:21 | <abeehc> I think, i do that already for the most part hehe
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| 14:21 | <Roasted> alkisg, the part that confuses me is the authentication process. If the shares are mounted, they'd be mounted under the server user login, whcih would more than liekly be my account. How would that help the users who have their own domain logins to the fat client boxes?
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| 14:21 | <abeehc> no they are mounted under the domain user that logged iunto the fat client
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| 14:22 | and authed against that domain user
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| 14:22 | essentially the fat client uses ssh to login
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| 14:22 | so you could hook a script into ssh that mounts as that user, under that user's homedir
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| 14:22 | on the server side
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| 14:22 | and the fat client would have nothing to do with it
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| 14:22 | <Roasted> is this still via pam?
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| 14:23 | <abeehc> you you could just hook a script into ssh, or even pam
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| 14:23 | <Roasted> I see
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| 14:23 | <alkisg> ltsp-remoteapps would also work
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| 14:23 | <Roasted> if all else fails, I'd find a way to convert that lab to thin clients
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| 14:24 | <abeehc> the key is that the server does the mount, and the domain user on the server has it's kerb tickets in order
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| 14:24 | <Roasted> it's just more seamless with our setup
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| 14:24 | <abeehc> so it should mount without a pass
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| 14:24 | <Roasted> I gotcha
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| 14:24 | <abeehc> again that only accounts for servers you know the user may access
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| 14:24 | <Roasted> we only have 1 server the studetns access
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| 14:24 | <abeehc> so my one script traversese tyhe group membership and decides what to mount
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| 14:24 | <Roasted> it's just a matter of whcih share it is
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| 14:24 | <abeehc> i see
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| 14:24 | <Roasted> there's science, social studies, math, english, class of... etc
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| 14:25 | but it's all one big fat file server.
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| 14:25 | <vagrantc> Roasted: if it's working fine as thin clients, then the method abeehc/alkisg are proposing would also work with fat clients and some jiggering ldm hooks
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| 14:26 | <Roasted> yeah
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| 14:26 | I'd just have to read into it more, as it's hard for me to place everything that's being suggested.
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| 14:38 | <vagrantc> highvoltage: i was thinking we should maybe just make an ldm-themes package and put spacefun into it for starters
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| 14:38 | highvoltage: then we don't have to upload a new source package every time the debian artwork changes, and could add a few other likeable themes.
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| 14:48 | <alkisg> vagrantc: bzr pull works with the new format? Or should I just delete + re-pull to be on the safe side?
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| 14:48 | (or bzr upgrade something?)
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| 14:49 | <vagrantc> alkisg: i think any should work, but you'll experience extra slowness until you upgrade.
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| 14:49 | <alkisg> delete + pull also upgrades though, no?
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| 14:49 | <vagrantc> alkisg: probably fastest to upgrade locally and repull
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| 14:49 | <alkisg> OK, doing so..
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| 14:49 | <vagrantc> sure, deleting it should work
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| 14:50 | if you were using init-repo you might run into some interesting issues.
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| 14:52 | <alkisg> Yeah del+pull was much faster than bzr upgrade
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| 15:55 | <highvoltage> vvinet: that sounds good, can I go ahead and do it?
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| 15:55 | (oops, wrong v<tab>)
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