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[02:59] <rhce7320> I am building edubuntu-desktop fai clients.  How do I populate /etc/hostname with the reverse lookup of its ip address, or its 'correct' hostname? At the moment all my test clients get the hostname 'host' & it is crippled until I change it to its dns name, eg, fai-131.  
[03:00] <rhce7320> I have to go back to work now.  Will see any responses when I get back in a few hours.
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[07:24] <stockholm> rhce7320: what does your "script" look like that populates hostname?
[07:24] <stockholm> mine looks like this:
[07:25] <stockholm> 1693   X Nov 25 Jeremie Miller  (0.4K)     
[07:25] <stockholm> err
[07:25] <stockholm> hostname -f > "$2"
[07:26] <stockholm> its in the DEFAULT class
[07:27] <stockholm> i am guessing you have the same?
[07:27] <stockholm> there are many ways to achive the same
[07:27] <maswan> we echo $HOSTNAME     > $target/etc/hostname
[07:31] <stockholm> actually we define stuff like LONG_HOSTNAME, SHORT_HOSTNAME, PUBLIC_NETWORKS, SERVICE_NETWORK_IP etc in the environment that we insert in preinst like this
[07:32] <stockholm> perl -p -i -e 's/##([^#]+)##/$ENV{$1}/g' $2·
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[07:34] <stockholm> that way you just need to know your environment vars by heart and can use the same preinst everywhere
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[12:01] <mettler> moin moin
[12:04] <mettler> is there a way to get into Busybox directly ? 
[12:04] <mettler> ..having problems to obtain an ip from dhcp server (in a vlan) 
[12:26] <Mrfai> you can add the option debug to the kernel command line
[12:26] <Mrfai> I think you will enter the busybox shell, if you have wrong nfs parameters
[12:28] <Mrfai> http://www.informatik.uni-koeln.de/fai/fai-guide/ch-booting.html#s-booterror
[12:29] <Mrfai> Seems that you get the busybox shell if the mount does not work at all
[12:34] <mettler> ok thx! 
[12:41] <mettler> hmm, das prob ist: ich bin in einem VLAN netz. Eigentlich sollte nichts funktionieren was nicht getaggt ist.
[12:42] <mettler> warum auch immer klappt PXE wunderbar (bootp server wird vom switch getaggt)
[12:42] <mettler> also ich empfange kernel+initrd, aber kriege dann keine NFS_mounts zum FAI server durch
[12:43] <mettler> hatte das eigentlich so gemacht, dass ich in der INITRD einfahch ein "vconfig add eth0 12" eingebaut hab.
[12:44] <mettler> und dann halt    "ipconfig ${DEVICE} | tee /netboot.config"
[12:44] <mettler> als kernelParam: netdevice=eth0.12
[12:45] <mettler> leider bleibt der client dann nach der initrd haengen und wartet auf das Mounten des NFSs...was leier nicht klappt
[12:45] <mettler> hat jmd. vllt. einen generellen tipp, wie ich das besser in einem VLan machen kann?
[12:46] <mettler> der debug parameter hilft mir leider an der stelle nicht weiter ...und die BusyBox kommt leider auch nicht
[12:48] <Mrfai> versuchs mal irgendein unsinnigen parameter. Vielleicht root=/dev/xxx statt /dev/nfs
[12:53] <mettler> ach danke!!! 'getting busy in my box' -das hilft schon mal weiter ;)
[12:58] <Mrfai> ah es gibt eine option break. Versuch die mal bitte
[12:58] <Mrfai> anscheinend stopt die bei premount
[12:59] <mettler> ah, sehr gut  (konnte grad aus der busybox "fast" NFS mounten -requests kommen an)  ...break
[13:02] <Mrfai> d.h break klapt?
[13:03] <mettler> ne, mom 
[13:03] <mettler> hab hier nur eine bladeConsole ....dauert alles ewig
[13:04] <mettler> grad war nach der break option die tastatur weg. kann aber nicht sagen ob das nicht vllt. an der KVM lag
[13:04] <mettler> also break bricht auf jeden fall ab
[13:04] <mettler> aber ich kann leider nichts tippen/scrollenm
[13:05] <mettler> aber hab jetzt die Initrd neu gebaut -und wenn alles klappt .....:D
[13:07] <mettler> hmm schade, kernel panic ;) 
[13:07] <oz_> schön zu sehn wie das wer mit humor nimmt
[13:09] <mettler> ist erst 2tes lehrjahr und die blades sind alle gefai'd ^^ ..wenn die jetzt am netzwerk was aendern krieg ich halt erstmal panic ;)
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[13:28] <mettler> danke freunde! es bootet wieder ;)
[13:30] <mettler> das device war scheinbar noch nicht oben, als ich mit vconfig ein vlan adden wollte
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[14:41] <Mrfai> mettler: was fuer eine Lehre machst du? Wo? Was macht ihr mit euren Blades?
[14:46] <mettler> ich mach Fisi, also fachinformatiker SysIntegration bei der gmit-gmbh.de  -die maschinen sind von einem Kunden und dienen als DVB-H plattform
[14:46] <mettler> hab eine email fuer euch schon ausgefuellt ;) also dieses questionair  -muss das nur eben absegnen lassen und schick es euch ;)
[14:47] <Mrfai> super, das wollt ich hoeren :-)
[14:47] <mettler> sollte einen netzInstaller aufsetzen und bin *jeha* beim FAI gelandet :)
[14:48] <oz_> beste landung, mein herr.
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[15:26] <rgsteele||work> Is there a way I can declare a variable in the main FAI process, so that I can export it to every script and config file that needs it?
[15:27] <mib_co6tf4> like an environment var?
[15:27] <rgsteele||work> Ah, perhaps I can declare it in DEFAULT.var
[15:28] <rgsteele||work> Yep, section 7.6 of the FAI guide confirms.
[15:28] <rgsteele||work> Woot.
[15:28] <mib_co6tf4> excellent. my recommendation was going to be to look at Puppet if you did not find a better solution
[15:28] <mib_co6tf4> anybody using FAI as a component in an automation stack?
[15:28] <rgsteele||work> mib_co6tf4: I'm going to use Puppet, but mostly as a post-installation config mgmt system.
[15:28] <rgsteele||work> Instead of doing FAI softupdates.
[15:28] <mib_co6tf4> ueaj tjat
[15:29] <rgsteele||work> Slide your fingers to the left one key :)
[15:29] <mib_co6tf4> errrk keyboard. sry. yeah that's what i'm planning too... still haven't actually done it yet though so i'm not sure where all the pieces fit together
[15:29] <mib_co6tf4> :) what kind of infrastructure are you building?
[15:30] <mib_co6tf4> (ie supporting 1 app, many apps, virtualization... )
[15:30] <rgsteele||work> High availability database/web/monitoring/mail/etc. clusters.
[15:30] <rgsteele||work> Virtualization and a flagship app in the mix too.
[15:31] <mib_co6tf4> nice!
[15:31] <mib_co6tf4> that's similar to what i'm trying to do
[15:31] <rgsteele||work> Just rolled out a FAI database cluster the other day.
[15:31] <rgsteele||work> First official FAI rollout, so it obviously took longer than (hopefully) the rest will.
[15:32] <mib_co6tf4> of course... did you set up an apt mirror locally?
[15:32] <rgsteele||work> Yep.
[15:32] <rgsteele||work> 8 db nodes in 11 minutes.
[15:32] <mib_co6tf4> with debmirror or fai mirror
[15:32] <rgsteele||work> debmirror
[15:32] <mib_co6tf4> holy smokes! that's awesome
[15:32] <mib_co6tf4> ok so you have the full package repos?
[15:32] <rgsteele||work> Aye.
[15:32] <mib_co6tf4> i was going to try and just get the packages i use
[15:32] <mib_co6tf4> with fai-mirror...
[15:33] <rgsteele||work> mib_co6tf4: Never looked at fai-mirror myself.  But I use a local repository anyways, before I set up FAI.
[15:33] <mib_co6tf4> my plan is for a HA virtualization cluster that supports Xen (for Windows VMs) and OpenVZ (linux ve's)
[15:33] <rgsteele||work> I just sync that every night.
[15:33] <mib_co6tf4> hmm. I am short on storage space, but that's a good way to do it
[15:33] <mib_co6tf4> but maybe I'm looking at this wrong.
[15:34] <mib_co6tf4> maybe i need the Virt cluster for app servers, but an HA db cluster for the backends
[15:34] <mib_co6tf4> may get better db performance that way... do you run MySQL or Postgres (or both, and if so do they play nice on the same cluster do you know?)
[15:35] <rgsteele||work> Postgres - it's far and away a better database.
[15:35] <rgsteele||work> Once your databases start to increase past a couple hundred MB's, PG's performance blows MySQL out of the water.
[15:35] <mib_co6tf4> even for lightweight stuff? transactional systems and whatnot? i've been led to believe mysql is faster
[15:36] <rgsteele||work> Maybe if you're dealing with smaller databases.
[15:36] <rgsteele||work> My db's are hundreds and hundreds of MB, MySQL just wasn't an option.
[15:36] <mib_co6tf4> i'm in a service company, i was thinking mysql for the txn systems, then pull that data out for fulfillment and into PGsql or Bizgres for BI
[15:36] <mib_co6tf4> ... regardless though, I wonder if I shouldn't run the DB server(s) on bare metal
[15:38] <rgsteele||work> Our DB nodes all run Ubuntu Server, and the only packages we install are the ones relevant to Postgres.
[15:38] <rgsteele||work> Our transaction load is extremely heavy, but we've been very satisfied with the performance.
[15:39] <mib_co6tf4> what's your virtualization strategy, if you don't mind my asking... i've just recently brought linux to where i work and, virtualization is new here too... we have 3 esxi servers and they're unwieldy to manage, so i'm looking for options... how to manage all VMs/VEs from a single place, and have the load distributed over multiple nodes, with HA/failover
[15:39] <mib_co6tf4> hmm. I wonder how big of a performance hit i'll take running the DB's in VMs.
[15:39] <rgsteele||work> mib_co6tf4: We really only virtualize our testing servers, and for that we use VMWare Enterprise.
[15:39] <rgsteele||work> For our production nodes, it's bare metal.
[15:40] <rgsteele||work> At least for the time being, and no plans to change in the near future.
[15:40] <mib_co6tf4> our goal is to be a cloud provider within our company/industry
[15:40] <rgsteele||work> Cloud computing is an interesting concept that others here are dabbling with, but I've yet to put my hand in to that cookie jar.
[15:40] <mib_co6tf4> so our clients have to be able to create/admin their db's from a console or something without having access to any of the other data
[15:41] <mib_co6tf4> i've got my hand in too many cookie jars... it's all such cool stuff but i need to focus on one aspect and just get it done... hence, here i am, trying to not set up debian/ubuntu by hand anymore.
[15:41] <rgsteele||work> Can't say I have much advice for you there, having little experience with cloud computing.  I only know what I've read.
[15:41] <mib_co6tf4> i figure that's step one, cause vm or bare metal, it's gotta have an OS. 
[15:42] <rgsteele||work> This will definitely help decrease your overhead, once you get it up and running.  Anyways, I gotta get back to doing what they pay me for :)
[15:42] <mib_co6tf4> your DB cluster, if one drive fails in a node, do you know? if a node goes down, what's the impact?
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[15:42] <mib_co6tf4> oh, ok... well thanks for sharing the info! it's given me some things to consider. good luck with your variables :)
[15:43] <mib_co6tf4> if you have any links or anything to share about HA capability/failover in your DB cluster that would really be hugely helpful... happy thanksgiving!
[15:43] <rgsteele||work> We have hardware RAID in the individual nodes, and our databases are sharded (look it up on Wikipedia)
[15:44] <rgsteele||work> I get notified via email if a drive goes south, so I can go down and swap in a good one (all of 'em are hot swappable)
[15:44] <mib_co6tf4> what's the mechanism for sending that email? shell script?
[15:44] <mib_co6tf4> it sounds like you have done many of the things i'm working on doing...
[15:44] <rgsteele||work> If a node goes down, there is some service impact (since they're sharded, and not completely redundant outside of the hardware RAID).
[15:45] <mib_co6tf4> ok so not a HA cluster
[15:45] <rgsteele||work> But, the cost/benefit ratio just doesn't add up when considering 100% redundancy for every single db node (there are hundreds...).
[15:45] <rgsteele||work> mib_co6tf4: The db cluster isn't.  The web cluster/monitoring cluster are.
[15:45] <mib_co6tf4> sounds like you run/work in a pretty awesome DC :)
[15:45] <rgsteele||work> It's not a DC :)
[15:46] <rgsteele||work> Private company, one flagship app, no red tape or corporate bullshit.
[15:46] <mib_co6tf4> hundreds of db nodes, clusters... how is that not?
[15:46] <rgsteele||work> We have cages at several colo's.
[15:46] <rgsteele||work> Big cages :)
[15:46] <mib_co6tf4> lucky. 
[15:46] <mib_co6tf4> either way, it sounds really cool
[15:47] <rgsteele||work> Yeah, I dig it.
[15:47] <mib_co6tf4> ah, oh yeah, so how does the server know to email you?
[15:47] <mib_co6tf4> that's a critical piece i'll need... if you have a sec...
[15:47] <rgsteele||work> Nagios.
[15:47] <mib_co6tf4> (don't want you to get in hot water at your sweet gig) otherwise i'll be around later
[15:47] <rgsteele||work> I monitor *everything* with Nagios.
[15:47] <mib_co6tf4> i bet you use iclassify too don't you
[15:47] <rgsteele||work> Nope.
[15:47] <mib_co6tf4> hmm. inventory system?
[15:48] <rgsteele||work> At least, not yet.  Maybe I will once I have more time to play with Puppet.
[15:48] <mib_co6tf4> (and now i know you are not adam jacob)
[15:48] <rgsteele||work> I've been called a lot of things, but Adam is not among them.
[15:49] <mib_co6tf4> add awesome cluster guru to the list, have a great day man!
[15:49] <rgsteele||work> You too :)
[15:49] <mib_co6tf4> and if you didn't konw about hjk solutions (you probably do) but maybe worth checking out
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[16:19] <Mrfai> /quit/quit
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[16:24] <mettler> /quit/quit ;)
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[22:01] <rhce7320> stockholm:  Thanks S, & others for hostname response yesterday.  I hav just got back to catch up.
[22:04] <rhce7320> Unfortunately, my lab has to be dismantled tonight & packed in a container on Saturday.  The metal is headed for a school & mission in Ndola Zambia.  I hope to set up a couple of nodes at home to iron out my remaining edubuntu roll-out problems before the container is opened in Ndola in 6 months time.
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[22:08] <stockholm> rhce7320: exciting
[22:09] <stockholm> what kind of mission is that?
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[00:00] --- Thu Nov 27 2008