/srv/irclogs.ubuntu.com/2007/03/19/#edubuntu.txt

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sbalneavEvening all01:29
LaserJockhi sbalneav01:31
sbalneavHey LaserJock01:32
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Burgundaviahey LaserJock03:10
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LaserJockhi Burgundavia03:40
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Kamping_Kaiseranyone here part of netday (sp?) in south africa?07:07
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bddebianHeya03:46
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capt_kirkogra, you around.  possible LTSP bug I wanted to ask you if you've seen before I submit06:13
capt_kirkfor anyone, for both of the Edubuntu LTSP labs I run if the internet is not available, the LTSP server gets very slow and will not let more than two or three clients log on.  As soon as I can get the internet restored, it gets peppy again and lets all 15 clients log on.  Has anyone else seen behavior like this.  It's a problem here in Tanzania, because our internet connection is not reliable.06:20
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capt_kirksbalneav, you around?06:30
sbalneavcapt_kirk: yes, back from lunch now06:32
capt_kirkhi, thanks.  I was wondering if any of you have heard of anything like this: for both of the Edubuntu LTSP labs I run if the internet is not available, the LTSP server gets very slow and will not let more than two or three clients log on. As soon as I can get the internet restored, it gets peppy again and lets all 15 clients log on.06:33
capt_kirkI originally thought I was seeing things, but I've been able to reproduce it over and over on both suites06:33
sbalneavNever heard of anything like that.  Sounds like either a router issue at your end, or alternatively, some kind of DNS issue, i.e. something not resolving if your internet is down.06:34
sbalneavHowever, there's nothing intrinsically in LTSP that depends on the internet being there.06:35
capt_kirkOur internet connection is not very reliable here in Tanzania, and if it's not there when the server starts up, it will let the first couple of clients log on and then it slows dramatically, and the rest of the clients either get partway through the LTSP client boot or don't get an IP address at all.06:35
capt_kirkThat's what I thought.  I can't find anything in any of the system logs to show why it's slowing down, and top doesn't show anything hogging either the CPU or memory.06:36
capt_kirkWhat I can't figure out is why it lets the first couple of clients boot up, but then won't let more boot after that.06:37
sbalneavOne of the things you'll want to check is that the machine's official hostname is in the /etc/hosts file, resolvable to the loopback.06:37
sbalneavi.e. if the machine's name is "oogabooga", you'll want something like:06:37
sbalneav127.0.0.1 oogabooga oogabooga.your.domain.name06:38
capt_kirkI'm pretty sure it's not a router issue, because I'm just using a switch directly between the server and the clients.06:38
sbalneavotherwise, if the machine needs to make a DNS lookup to find it's own name, that may slow things down.06:38
capt_kirkthanks.  I think it's already set up that way, but I'll check.06:38
capt_kirkso, it's 127.0.0.1 localhost, and 127.0.1.1 library library.mtc.local where library is the host name.06:41
capt_kirkdoes it really need to be on 127.0.0.1?  edubuntu put it on 127.0.1.1 by default06:41
capt_kirkeasy enough to switch here, but it would be nice if it defaulted to the better option if it really matters.06:42
sbalneavThat's fine too.06:43
capt_kirkthat's what i thought.  just wanted to make sure.06:44
capt_kirkit's that way for both labs06:44
sbalneav127.x.y.z is all the same.  Netmask for 127 is 255.0.0.006:44
capt_kirkthat's what I thought. thanks.06:44
capt_kirkany other thoughts or places to look in logs, debug options, etc06:45
capt_kirkwhen the clients cannot get an IP address from DHCP, there's no indication of why DHCP has failed in the logs.  When the internet comes back up, DHCP kicks back in with out a restart and issues addresses.06:46
sbalneavThat will definitely be a DNS issue.06:47
sbalneavYou using the standard dhcpd.conf filename.06:47
capt_kirkI am running a local DNS server along with squid on another box, so any local names should resolve even without the internet06:47
capt_kirkyes.  the only thing I've changed in dhcpd.conf is the network address.06:48
capt_kirkYeah.  I just rechecked dhcpd.conf, and all is original except the network address06:50
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capt_kirkWhy would DNS be causing DHCP to die after the first few leases?06:52
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capt_kirk(brb - have to fix computer for user in lab...  Darn users get in the way of getting any real work done. ;) )06:55
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capt_kirksbalneav, back.  So here's where it's an LTSP issue (from my end user's point of view - even if it's really something else, it feels like an LTSP issue, because I can't get the thin client to boot).  I can log on and off of the server and the two or three clients that do get all the way through the initial boot.  It seems like once they have a working thin-client kernel loaded, they're...07:24
capt_kirk...alright.  But any additional clients can't get past the PXE DHCP request.07:24
capt_kirkBoth suites are "out of the box" Edgy clean installs07:24
capt_kirkand both produce identical problems.07:25
sbalneavAnything in /var/log/daemon.log?07:25
capt_kirkI don't think so, but let me check again.07:25
cliebow_dumb question..but i assume you have some leases left available?07:28
cliebow_i have in testng used up all my leases07:28
capt_kirksbalneav, nothing unusual during the time that the internet was down this afternoon.  the same dhcp messages as when the internet is up.  no other messages, warning, etc07:29
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capt_kirkcliebow, good question, but yes leases available.  As soon as the internet comes back, whatever is bogging down the PXE-DHCP request issue (also happens with bootp-DHCP) clears up and the thin clients boot up without a hitch.07:30
sbalneavWhere does it fail?   Does it GET the ip address, then fail on the tftp? Or does it fail on the lease itself?07:31
capt_kirktwo different types of failure.  the first few clients to fail actually get a lease and go through most of the boot sequence, but then when they try to start the LTSP client, they error out with a message that says something like "Unable to start job process" and it stays dead on a terminal screen.  Sorry I can't remember the exact wording now, but it doesn't show up on the server logs and I...07:34
capt_kirk...didn't write it down.07:34
capt_kirkThe other failure mode is just no IP address at all07:35
sbalneavAre you at work now? or at home?07:35
capt_kirkAt home, but one of the labs is just 200 meters away.  (The students might get angry if I boot them off now, though.  A lot are writing papers for tomorrow.)07:36
capt_kirkI'm SSH'd into the server to pull up logs, but I'll have to walk over to the lab to do any actual testing07:38
sbalneavAssuming it's some kind of a DNS problem, something you could try is to set up a caching DNS server on the local machine, which forwards to your default dns server.  Then, set your /etc/resolv.conf to point to the local dns server, as opposed to the remote one.  You shouldn't NEED to do this, but without looking more closely at your setup, with you there to check on some things, it's the best I can offer at the moment.07:38
capt_kirkwhich I'll be happy to do07:38
sbalneavyou're ssh'ed in?07:38
capt_kirkyes07:38
sbalneavCan you paste your /etc/ltsp/dhcpd.conf file to the pastebin?07:39
sbalneav!pastebin07:39
ubotupastebin is a service to post large texts so you don't flood the channel. The Ubuntu pastebin is at http://paste.ubuntu-nl.org (be sure to give the URL of your paste - see also the #ubuntu channel topic)07:39
capt_kirksure07:39
capt_kirkI pasted it.  I think it's http://paste.ubuntu-nl.org/11063/07:43
sbalneavdomain name's mtc.local?07:44
ogradrop .local everywhere, thats reserved for network manager ...07:44
sbalneavother than that, it looks pretty bog-standard.07:44
capt_kirkYes.  It's just a campus domain, with no outside resolution07:44
capt_kirkok07:44
sbalneavBe interested to see what your resolv.conf looks like07:45
capt_kirkjust sec07:45
capt_kirkI think I may have figured it out.  The DNS server in dhcpd.conf is the router, not the other box with DNS/squid.  But why would that cause the first few to work, with later ones failing?07:46
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sbalneavNot sure on that one.  Like I say, the whole thing seems a little goofy.07:47
capt_kirksorry.  I'm getting too tired.  the dns server listed is the LTSP server, like it was in the default file07:47
sbalneavis there a dns server on the ltsp box?07:48
capt_kirkall i changed was the network from x.x.0.x to x.x.200.x07:48
capt_kirkno, it's on another box on the internet side of the ltsp server (ltsp has two nics. one for clients and one for internet access.)07:49
capt_kirkltsp is 192.168.1.2 and dns/squid is 192.168.1.307:49
capt_kirkwith router to the outside world as 192.168.1.107:49
capt_kirkresolv.conf is http://paste.ubuntu-nl.org/11068/07:52
capt_kirkI'll drop the .local07:52
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sbalneavhmm08:03
sbalneavgot two cards in this machine?08:04
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capt_kirkyes.  two cards.08:15
capt_kirk192.168.1.0 is the public-side network and 192.168.200.0 is the ltsp-side of the network.08:16
capt_kirkgotta get to bed.  dozing off at the computer.  Tommorrow, I'll take .local off of both suites and try artificially testing by unplugging the internet connection.  Thanks for the help so far.08:20
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rockprincessevening y'all!10:07
highvoltagegood evening your majesty!10:12
LaserJockhi rockprincess and highvoltage10:13
highvoltagehey LaserJock10:13
rockprincesshello Laserjock!10:13
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rockprincesshey highvoltage ;)10:14
highvoltage(poor bed)10:14
rockprincesshehe me too! but i have a quick question to you guys10:14
cbx33hey,,,,,10:14
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cbx33i hate migranes10:14
rockprincesshello pete ;) how come???10:14
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rockprincesswhy am I not able to have sound on my thin clients?10:15
rockprincessi have sound on my server though...10:15
cbx33edgy/dapper?10:16
rockprincessedgy10:16
cbx33hmm10:16
cbx33is edgy sound on by default?10:16
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cbx33nor do i have the brains to think right now10:16
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rockprincessi came across that subject on the edubuntu mailinglist and noticed that i had a similar problem....10:17
rockprincessStphane Graber said something like the clients are using ESD? what is ESD?10:17
bddebianElectro Static Discharge?10:19
bddebianOh, you probably mean the Enlightened Sound Daemon :-)10:20
rockprincessyep, that sounds about right.....any ideas how i could enable sound on my thin clients?10:20
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Burgworkrockprincess: you need to edit lts.conf10:26
Burgworkbasically tell the thin client it can use sound10:26
rockprincessBurgwork: cool, thanks for the hint! Is there anything particular that I should edit?10:26
Burgworkyep, finding you the link now for help10:27
Burgworkhttp://www.edubuntu.org/GettingStarted10:27
Burgworksearch for sound10:28
rockprincessBurgwork: cheers, I appreciate your help :) thank you!10:28
Burgworkno worries10:28
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Burgworkbddebian: having not setup LTSP/Edubuntu is no excuse for not knowing the answers10:28
Burgworklook at me. I have never installed either LTSP or Edubuntu10:28
ajmitchmorning10:29
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Burgworkmorning ajmitch10:29
Amaranthi've only played with a live cd10:29
rockprincesshaha you guys never disappoint me, you ALWAYS have the answers thank you :)10:29
Amaranthdid any of you get offered sponsorship to go to seville?10:30
Burgworkoffered sponsorship? nope10:30
Burgworkdid you?10:30
AmaranthYes and I'm not sure why10:30
ajmitchbecause you're involved with bling10:30
Burgworkindeed10:30
LaserJockAmaranth: to UDS or UES?10:30
AmaranthUDS10:30
bddebianBurgwork: I don't know anything, don't you know that yet? :)10:31
Amaranthlooking for someone else who knows wtf is going on so they can tell me what to do :)10:31
Burgworkbddebian: you lie in a horrible horrible manner10:31
BurgworkAmaranth: say yes, then get your password in order10:31
bddebianNot hardly :'-(10:31
AmaranthBurgwork: going to do that tomorrow10:31
Burgworkexpect a wait10:32
ajmitchBurgwork: s/word/port/, I hope10:32
Amaranthindeed10:32
=== ajmitch has his passport lying around somewhere
ajmitchI think10:32
LaserJockI got mine for Paris10:32
Amaranththat's why i'll do it tomorrow, will have over a month10:32
LaserJockso I'm good to go if I get an email10:32
Burgworkajmitch: ?10:32
ajmitchBurgwork: I have a messy room, but I saw my passport a few days ago10:33
ajmitchso I know it's in there10:33
Burgworkah10:33
Burgworkmine went through the wash10:33
Burgworkneed to get a new one10:33
ajmitchouch10:33
ajmitchyeah, I've already replaced one for water damage10:33
Burgworkit was from Mataro anyway, so it needed to be replaced10:33
ajmitchcost a lot10:33
ajmitchah, sevilla, such a long, long way from NZ10:33
Amaranthacceptance sent10:35
ajmitchwell done10:35
LaserJockcool10:35
AmaranthI feel stupid10:35
ajmitchbecause you'll sit around for most of the week?10:35
AmaranthNo, because I'm not sure what to do10:35
AmaranthOr how stupid I sounded in the email10:35
LaserJockAmaranth: you doing SoC?10:35
ajmitchabout what?10:35
AmaranthLaserJock: nope10:36
ajmitchwhat are you unsure about?10:36
Amaranthajmitch: "You are welcome to either make your own arrangements and claim the expense back after the event or use our agents Eyas, dionne@eyas.co.uk."10:36
ajmitchright10:37
ajmitcheasiest to get their agent book everythign10:37
AmaranthI expect doing it yourself would take forever to get compensated. :)10:38
LaserJockyeah, dionne is good10:38
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LaserJockI went with the agents for Paris10:38
ajmitchprobably not that long, but it's annoying to be broke while there10:38
LaserJockthey did a lot of work since it was kinda last minute10:38
LaserJockand I didn't have to do a thing10:38
ajmitchstill about 7-8 weeks until UDS10:38
=== ajmitch would love to go, really
ajmitchat the moment it's blocked on getting time off10:39
Amaranthbeauty of being unemployed :)10:40
ajmitchhah10:40
ajmitchwhat, that you're broke? ;)10:40
Amaranthno, lots of free time :)10:40
stgraberrockprincess: You've hilighted me ?10:40
rockprincessstgraber: oh, yeah actually i just quoted your last email on that rdp and sound matter on the edubuntu mailinglist10:42
AmaranthLaserJock: so just send them an email?10:42
LaserJockAmaranth: the agent?10:42
Amaranthyeah10:42
Amaranthi mean, not right now10:42
ajmitchthey'll be used to dealing with confused & stunned geeks10:42
Amaranthhaha10:42
ajmitchfirst time out of the US?10:42
LaserJock2nd time on airplane?10:44
LaserJock;-)10:44
LaserJockAmaranth: yeah, I think you just email them with like what city you'll be flying out of and what day10:45
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cbx33is it keybuk@ubuntu.com ?10:50
ajmitchscott@ubuntu10:50
=== ajmitch was just replying to one of his emails :)
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ajmitchhm, if I went to UDS, maybe I could go via singapore :)10:51
ajmitchfly via the US one way, and via asia when I return :)10:51
rockprincessgood night all, and thanks for your help as always :)11:01
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Amaranthoops, was eating11:32
Amaranthfirst time out of US, second time flying, yeah11:32
Burgworkogra: you around?11:32
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sbalneavogra: ping!11:52
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