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04:52 | <sakhi_> morning
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04:54 | I have created a VM (libvirt) restarted the server and the clients are not booting up. dhcp-server is running... what am I missing here?
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04:55 | the first user can can log-on but the rest cannot even after sshkeys and image update.
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04:57 | <alkisg> Erm, if the clients are not booting up, how can the users log on?
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04:58 | * alkisg didn't understand the problem... | |
04:58 | <Appiah> Can the clients PXE boot but not logon at the LDM?
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04:58 | <sakhi_> alkisg: that was before.
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04:58 | alkisg: that was before I restarted the server.
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04:59 | <alkisg> Ah, so now they boot normally but they cannot logon?
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04:59 | <sakhi_> but now the clients are not booking up.
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04:59 | <Appiah> Where does it stop?
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05:00 | <sakhi_> at the point where is searches for the DHCP server and cannot find it.
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05:00 | <Appiah> at the PXE boot?
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05:00 | <sakhi_> yep
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05:00 | dhcp-servers is running
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05:00 | <alkisg> Does the dhcp server provide a boot filename?
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05:00 | <Appiah> did you update something?
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05:00 | <alkisg> (dhcpd.conf)
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05:00 | <sakhi_> yep I did
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05:01 | I updated sshkeys and the image hoping other users will be able to logon to the thin client server.
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05:02 | <alkisg> dhcp is before the image is loaded
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05:02 | So updating the chroot wouldn't matter at that point
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05:05 | <sakhi_> yep, this is my current config and the way it was before: http://paste.ubuntu.com/437224/
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05:12 | <alkisg> Are you sure that lines 61-65 are correct?
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05:16 | <sakhi_> it was like that when the clients worked, I'm sure, how would you have it?
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05:17 | <alkisg> I'd use the default example dhcpd.conf...
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05:17 | <sakhi_> alkisg: the first IP is the VM server IP.
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05:18 | <alkisg> /usr/share/doc/ltsp-server/examples/dhcpd.conf
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05:18 | (on my Ubuntu at least)
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05:19 | <sakhi_> same here
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05:19 | <alkisg> E.g. now you don't send a boot filename...
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05:28 | <sakhi_> eish...
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05:53 | <alkisg> sakhi_: use the default dhcp file, and just change your subnet
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06:26 | <sakhi_> if had big shoes I would kick myself to timbak-toe now yerrrr
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06:27 | working on the wrong server
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06:36 | <Appiah> ?
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06:51 | <sakhi_> oh well it happens that I had two LTSP virtual servers and I was creating user accounts and really working on the other (wrong) server in the meantime the proper server was also up. It's a long story. I'm busy setting up DNS from scratch now, this should be quick and fun.
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07:33 | <sakhi_> I
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07:33 | sorry
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07:34 | <Appiah> :)
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07:34 | <sakhi_> I'm not sure if anyone else has had this problem before or it's new. When I add users via the GUI and cat /etc/passw I noticed a slight difference.
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07:35 | test:x:1001:1001:,,,,:/home/test:/bin/bash
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07:35 | user1:x:1002:1002:,,,,:/home/user1:/bin/bash
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07:35 | test1:x:1003:1003::/home/test1:/bin/sh
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07:36 | the user test and user1 can log on to the LTSP server but test user 1 cannot and you would think that you need to to update sshkeys and image.
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07:37 | this is a VM LTSP server.
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07:42 | <Appiah> if you go to a terminal
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07:42 | and set a new password for the user that cant
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07:42 | +logon
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07:42 | Can you logon now?
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07:46 | <sakhi_> ohhh you know what, when you add users on the gui without real names they will not exist even when you go to the /home/ dir and do a ls -ilah
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07:47 | * sakhi_ stops with the double posting :) | |
07:48 | <sakhi_> it makes sense though to have it setup like that.
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08:46 | <sbalneav> If anyone's got time today, I'd love someone to test the new xexit
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09:03 | <Appiah> what's that?
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11:12 | <sbalneav> OK, so here's the test I've run with xexit:
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11:13 | Log in as a user.
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11:13 | xexit's running
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11:13 | 4 exit scripts:
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11:13 | 11kill-evo-dataserv: pgrep -f evolution-data-server | xargs kill -9 || true
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11:14 | 12pulseaudio
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11:14 | pgrep pulseaudio | xargs kill || true
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11:14 | 20gconf-shutdown
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11:14 | gconftool-2 --shutdown || true
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11:14 | 99killeverything
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11:14 | pkill -9 -u $USER
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11:15 | xexit's running.
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11:15 | Log out cleanly, no dead processes left: completely logged off.
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11:15 | log in again
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11:15 | xexit's running
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11:16 | pull powercord on thin client (worst case scenario logout)
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11:16 | 15 seconds later
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11:16 | all user processes cleaned up.
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11:16 | xexit should work for: any desktop
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11:16 | binary's 5l
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11:16 | 5k, sorry
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11:17 | <ogra_cmpc> omg 5 liters ?
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11:17 | <sbalneav> took me 5l of beer to write :)
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11:17 | <ogra_cmpc> hehe
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11:18 | <sbalneav> I'll build a .deb for anyone interested...
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11:32 | <cliebow> ill get you 5 l of "Old Tree Frog"!
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11:34 | <sbalneav> Good, I'll drink it in October!
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11:37 | <cliebow> You are ON!!
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11:38 | Ill help!!
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11:38 | * cliebow cliebow wanders off to find treefrogs | |
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11:43 | <cliebow> Scottie: you useing the slapd.d configs for ldap?
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11:45 | <sbalneav> cliebow: I've got a currently "older" ldap server that's running the config files
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11:45 | But I've written a howto for the newer way to do ldap
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11:46 | https://wiki.edubuntu.org/Edubuntu/WikiSite/SimpleLDAPSetup
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11:47 | OK I've got a lucid xexit package building in my ppa
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11:48 | <cliebow> Ohhh Boy!!..trying to track down and olcAccess error
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11:49 | <sbalneav> what's the error?
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12:02 | <cliebow> sbalneav: i see an error 50
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12:04 | oh..ill get which attribute
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12:05 | yeah in this case uidNumber
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12:07 | <cliebow> i ihad to increase sizelimit or pdbedit would crap out..so looking for olcAccess
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12:47 | <sidartha> hello! I'm recently new to ltsp, but am looking to build a server that will need to support 12 - 15 high intensity clients. Running gimp, flash, etc. Does anyone have a suggestion on wether I should look at the new 6 core amd processors, or a quad i7, or xeon II?
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12:57 | <sbalneav> sidartha: If you're looking to run a lot of flash, I'd reccommend you either use localapps, or the fatclient plugin
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13:00 | <sidartha> Im planning on it. However I would like to have some overhead on the server cause my clients are pretty old legacy machines. I am alos planning on using a ton of ram. I just need to pick a processor, any suggestions?
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13:03 | <sbalneav> "As high as you can afford" is the usual mantra around here :)
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13:03 | <sbalneav> Ram will give you more "bang for the buck" than you think, as well.
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13:03 | vvinet has quit IRC | |
13:04 | <sbalneav> So don't skimp on the GB's
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13:04 | <sbalneav> On one server, I support about 40 people doing web, and OpenOffice with 2 dual xeons, and 8 gigs of ram.
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13:05 | <sidartha> Im planiing around 12 gb of ram.. I guess the processors Im looking at are all around 200-300. Im just tring to figure that would the ltsp benifit from the 6 core amd, versus hyperthreading 17 quad?
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13:06 | i7 imean
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13:16 | <cliebow> sbalneav: i get an err=50 searching for uidNumber .I added uidNumber
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13:16 | olcAccess {0}to attrs=userPassword,uidNumber by dn="cn=admin,dc=rsu24,dc=org" write by anonymous auth by self write by * none
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13:16 | inhdb
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13:16 | <cliebow> with no effect
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14:47 | <denisesball> do you guys recommend using stgraber's ppa on ubuntu lucid or just using the stable packages from there?
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14:48 | <alkisg> I don't think there are any updated packages in stgraber's ppa yet
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14:48 | <denisesball> ok i figured that might be,
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14:49 | <alkisg> Personally I got my own ppa and I copy there whatever I need
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14:49 | (e.g. now I have a newer ltsp version which supports passing nfs mounting options...)
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14:49 | (launchpad makes it very easy to copy packages from a ppa to your own ppa)
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14:50 | <denisesball> which mounting options? im using the lucid stable packages with nfs without issues so far
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14:51 | <alkisg> Nah never mind I was talking about fat client - my point was that it's handy to have a personal repository...
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14:51 | <denisesball> lol ok
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14:51 | we definitely have nfs issues on our current setup (old) so i was curious
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14:52 | <alkisg> I had some problems with statd not starting on linux,
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14:52 | *lucid,
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14:53 | <denisesball> yeah i think that's a bug
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14:53 | <alkisg> so any clients that wanted locks were hanging,
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14:53 | so I'm putting "nolock" to get around that problem, and it's also faster.
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14:53 | <denisesball> https://bugs.launchpad.net/bugs/525154
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14:54 | i've been following that pretty closely, but i havent really seen any issues with it
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14:54 | i see the server hang, but it still mounts
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14:57 | <alkisg> Ah, I've read about that /var problem, but that's not what we're experiencing
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14:57 | <denisesball> oh ok
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14:57 | <alkisg> We just have an nfs-shared /home
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14:57 | <denisesball> yeah same here
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14:57 | <alkisg> With thin clients? Why?
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14:57 | <denisesball> the ubuntu wiki says the gnome watchdog isnt needed anymore, but i notice if a user doesnt log out properly they still have processes running
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14:58 | thin clients? because we have many term servers and they all mount the same /home over nfs
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14:58 | <alkisg> Got it. At some point gnome watchdog was needed even if a user logged off normally.
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14:59 | That's what the wiki is referring to
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14:59 | <denisesball> ah ok
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14:59 | i just dont trust our users to do that :)
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14:59 | <alkisg> Now if a client crashes, the user processes will be killed after about 2 hours
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14:59 | (not all of them, but most of them)
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14:59 | <denisesball> oh is that right? good to know
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14:59 | i did wait a while, but not 2 hours :P
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14:59 | <alkisg> 2h and 11 minutes to be exact
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15:00 | <denisesball> it doesnt seem to affect the user from logging back in, so its not really a big deal
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15:00 | <alkisg> sbalneav is creating a very good utility named xexit would will be a much better gnome-watchdog replacement
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15:02 | <denisesball> alkisg: you use noatime for the nfs mount too?
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15:03 | <alkisg> denisesball: nope - but it's the first year that I'm using nfs so I don't have any experience with it. Do you recommend using it?
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15:05 | <denisesball> i could have swore i read it somewhere but i cant seem to find it now
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15:06 | <alkisg> I only heard about it for ext3 mounting options, never for nfs..
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15:07 | <denisesball> u could be right
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15:10 | interesting article i just came across - http://blogs.techrepublic.com.com/opensource/?p=64
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15:11 | nfs has been really slow for us. thinking of trying somethings in there
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15:12 | * alkisg hopes a packaged solution with nfs4+kerberos+ldap+whatever else will be available in the near future... so that we have something like an "active directory" in linux that works out of the box | |
15:13 | <denisesball> i had a real easy time getting ltsp to work with our ldap
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15:14 | <alkisg> OK, but how easy was to setup ldap in the first place?
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15:14 | <denisesball> haha, that would be before my time
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15:14 | <denisesball> we basically have an "ldap guy" now
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15:15 | <alkisg> Right... I wonder if that's necessary, or if a "simple & preconfigured ldap" package could be made available that suits 98% of the cases - the rest 2% ok would need that ldap guy :)
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15:16 | <denisesball> so you're saying an "all in one" server type of thing?
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15:17 | <alkisg> Yes, a "common home and common authentication/accounts" package
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15:17 | <denisesball> i spose that would be nice for a lot of people. we have an 8 server ldap cluster, so wouldnt really interest us :P
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15:18 | <alkisg> OK, with that size you can afford an ldap guy. But not me, with 12 PCs in a single lab... (like all other schools here)
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15:18 | <denisesball> yep, i could definitely see the appeal
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15:19 | im trying to convert a 100 user debian 4/kde 3 setup into an ubuntu 10.04/gnome environment
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15:20 | <alkisg> That should be easier than the opposite :D
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15:21 | <denisesball> haha, the most difficult thing so hard is trying to preserver old configurations. .mozilla seems to carry over easily, but the .kde stuff into gnome is a little wonky
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15:28 | alkisg: this is what i was thinking of - https://help.ubuntu.com/community/UbuntuLTSP/FilesystemOptimize
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15:29 | it is referring to ext3, but the converstation below is about a SAN so i got confuzzled o_O
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15:30 | i guess the question is, should we be using noatime on the server mounting the disk locally?
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15:41 | <vagrantc> use noatime, or at the very least, relatime
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15:45 | <denisesball> i'm gonna look into tweaking rsize and wsize too
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15:45 | part of the fun of inheriting old stuff :P
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15:49 | <vagrantc> the defaults for nfs over TCP shouldn't require much in the way of tweaking rsize/wsize
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15:49 | that's more of a UDP issue
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15:51 | <denisesball> i thought by default if u dont specift tcp it uses udp
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15:52 | cuz ive had nfs mounts fail where we had UDP blocked and had to manually specify tcp
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15:52 | although the newer versions seem to try that automatically
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15:54 | <vagrantc> i know LTSP clients have used tcp by default for quite some time
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15:54 | at least on debian
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15:56 | <Lns> alkisg: skolelinux has a pretty nifty "cookie cutter ldap" setup. I've been wanting to look into it to see how hard it would be to modularize. They seemed to get a pretty good basis going for school environments, even with a nice web config frontend and all
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15:59 | <denisesball> vagrantc: i'm sure the clients do. i mean the server itself though. for mounting home directories
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16:00 | <alkisg> Lns, I had a look at it some months ago. Yup, it's a good idea to have a pre-arranged environment. But to be honest I'd like to have something better... I wouldn't want to have to name my server "tejner" and I'd like to have some AD compatibity wherever I could...
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16:00 | <vagrantc> denisesball: ahhh
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16:01 | <Lns> vagrantc: in debian does nfs mounts on terminals get mounted with noatime/relatime by default?
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16:03 | <vagrantc> i don't think it supports the noatime option ... hopefully that means it doesn't use atime at all...
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16:03 | <Lns> alkisg: yeah - that's why i kinda shyed away from skole - it was a bit too cookie cutter for me. though i can definitely see the value in the majority of smaller installations. What they're doing is really great though
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16:03 | <vagrantc> but the server serving up NFS should definitely use noatime
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16:04 | <Lns> ok
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16:04 | <alkisg> vagrantc: thanks for the tip
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16:04 | <Lns> any gotchas for using noatime on a single partitioned root disk which contains /home too?
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16:05 | <vagrantc> Lns: for the most part, no.
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16:05 | <Lns> coolio. thx =)
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16:05 | <vagrantc> some mail clients using old mail formats have issue with it
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16:06 | <Lns> maildir ftw
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16:06 | <vagrantc> pretty much, yeah.
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16:06 | * Lns remounts / | |
16:06 | <vagrantc> and popularity-contest won't be nearly as useful
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16:06 | <Lns> oh really?
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16:06 | useful to the user or to the dist. maintainers?
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16:06 | <vagrantc> if you're concerned about popularity-contest, then relatime is a reasonable compromise
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16:07 | <Lns> I like contributing what i can through that =)
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16:07 | <vagrantc> basically, the atime status is what popcon uses to determine if a given package has been used or not
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16:07 | <denisesball> vagrantc: is there a way to tell if an nfs share is mounted using tcp or udp? mount doesnt say eiuther if you dont specify
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16:08 | <vagrantc> denisesball: packet sniffing?
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16:08 | <denisesball> yeesh
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16:08 | <vagrantc> heh
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16:08 | <Lns> hacker!
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16:08 | =p
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16:08 | <denisesball> i think i will just specify to be safe
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16:08 | <vagrantc> explicit saves a lot of guesswork :)
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16:08 | <denisesball> would using only tcp be slower?
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16:09 | <vagrantc> i haven't actually benchmarked any of them... at one point i had lots of problems with UDP so switched to TCP and never went back :)
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16:10 | <denisesball> and didnt see any performance decrease huh? mine are all gig, but its a pretty big environment too
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16:10 | good to kow
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16:10 | know*
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16:11 | <vagrantc> i think at the time i was still using 10-base thin clients and 100-base for the server.
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16:11 | <denisesball> well that makes me feel better
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16:11 | <vagrantc> denisesball: well the performance difference was from 0% performance to working :)
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16:11 | <denisesball> haha
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16:12 | ok, this work week has concluded. thanks for the help as always guys. later
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16:12 | * vagrantc waves | |
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