IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 21 December 2012 (all times are UTC)
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| 10:24 | <ltspuser_48> oi
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| 12:09 | <markit> Hyperbyte: hi, a question about nfs4, are you here?
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| 12:11 | <Hyperbyte> markit, no, sorry. I am currently travelling through time and will return five minutes ago.
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| 12:14 | (yeah, I'm here, what's up? :P)
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| 12:41 | <markit> hi, sorry, dinner :)
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| 12:41 | Hyperbyte: still there?
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| 12:41 | <Hyperbyte> I've been waiting here for half an hour!
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| 12:41 | :(
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| 12:42 | <markit> Hyperbyte: I'm really sorry, but wife come and...
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| 12:42 | <Hyperbyte> Prioritize man! Who puts their wife in front of anything... :/
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| 12:42 | <markit> for nfs4, do you create a dir like /nfs4 on the serer and mount bin /home, right?
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| 12:43 | <Hyperbyte> For home dirs, yes.
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| 12:43 | <markit> what permissions do you have in that dir? I don't want students be able to go there from /
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| 12:44 | <Hyperbyte> You don't want students to access the /home/ dir?
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| 12:44 | <markit> and also, does nfs4 respects ACL?
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| 12:44 | Hyperbyte: no, I don't want to go in /, find /nfs4 and go there through that route
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| 12:45 | <Hyperbyte> Not entirely sure.
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| 12:45 | <markit> or is perfectly equivalent of /home?
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| 12:45 | <Hyperbyte> I don't see why you would have /nfs4 on a machine if you don't want to people to access it. Then why is it there?
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| 12:45 | <markit> I mean, /home is mounted with nfs, while /nfs4/home is accessed through sshfs file system?
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| 12:45 | <Hyperbyte> No?
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| 12:46 | Why would you use both sshfs and nfs?
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| 12:46 | <markit> Hyperbyte: I want people access the MOUNTED home, not the root of the mount point
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| 12:46 | <Hyperbyte> I don't understand again. The mounted home, with mount point /home I suppose you mean
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| 12:47 | And you don't want users to access /home ?
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| 12:47 | <markit> yes, I love them to access it
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| 12:47 | don't want them to access FROM THEIR CLIENT /nfs4/home
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| 12:47 | but only the mounted /home
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| 12:47 | <Hyperbyte> But explain this:
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| 12:48 | What is /nfs4/home and what is /home? And why do you want them both?
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| 12:48 | <markit> I don't want them both, is something I want avoid like hell
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| 12:48 | mmmm ok, fat clients have their own /, so problem solved
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| 12:48 | <Hyperbyte> Then why would you have them both?
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| 12:49 | <markit> I'm confusing what sees thin and what sees fat, sorry
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| 12:49 | <Hyperbyte> mount server:/home /home
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| 12:49 | On -all- clients, fat, thin, whatever.
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| 12:49 | And then you're done.
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| 12:49 | <markit> ok, but THIN can do ls -l /nfs4/home, right?
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| 12:49 | <Hyperbyte> So let me ask again
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| 12:49 | What is /nfs4/home ?
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| 12:50 | <markit> is a server directory
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| 12:50 | so if you are in the server, you can see it
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| 12:50 | <Hyperbyte> But why is it there?
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| 12:50 | <markit> and is ALSO available with nfs
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| 12:50 | is there because, unfortunately, with nfs4 you have to provide a "virtual root" directory
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| 12:51 | while with nfs3 you just export /home
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| 12:52 | Hyperbyte: btw, I've changed no_root_squash with root_squash and fat works fine :) thanks
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| 12:52 | now I want to try to change from nfs3 to nfs4 and see if everything works fine and hope better
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| 12:52 | <Hyperbyte> markit, are you sure about this?
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| 12:53 | Because I'm pretty sure I'm using NFS v4
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| 12:53 | It says so in mount points, as well as nfsstat
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| 12:53 | But I have no idea whatsoever about what you're talking about.
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| 12:53 | <markit> well, the doc I've read tells about a different way of set exports with nfs4
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| 12:53 | you need a line with fsid=0
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| 12:55 | Hyperbyte: http://www.cyberciti.biz/faq/nfs4-server-debian-ubuntu-linux/
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| 12:55 | and http://www.crazysquirrel.com/computing/debian/servers/setting-up-nfs4.jspx
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| 12:56 | Hyperbyte: also if you do cat /etc/exports, nfs4 example has the "root" with fsid=0 and then subdir
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| 12:57 | <Hyperbyte> I don't have fsid=0 and I don't have this pseudo file system that's described there.
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| 12:57 | my exports file: /data (192.168.20.0/24(rw,sync)0000000000000
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| 12:57 | (minus the zeroes)
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| 12:58 | This /data dir I mount on the clients, and do a mount --bind /data/home /home
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| 12:59 | Which kind of looks like what's described in your howto, but I've done it purely by chance.
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| 12:59 | I don't see why you couldn't just export your /home dir though.
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| 12:59 | <markit> here maybe there is some more info: http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-nfs-server-config-exports.html
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| 13:00 | seems to be a new feature, and also you need to export the "root" virtual as "ro" for compatibility
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| 13:00 | but probably you can avoid that feature... wondering how do you specify what nfs version you are using then?
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| 13:00 | do you have a "mount nfs4" in fstab_0 ?
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| 13:01 | fstab_1?
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| 13:01 | <markit> I mean, how can you be sure that it's using nfs4 and not nfs3?
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| 13:01 | I thought was because of that fsid=0 stuff, but maybe I'm wrong
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| 13:01 | <Hyperbyte> supportserver:/data on /data type nfs (rw,vers=4,addr=192.168.20.6,clientaddr=192.168.20.4)
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| 13:03 | Plus there are all pretty recent installations with as few tweaking as possible... I'm pretty sure they're just defaulting to v4
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| 13:04 | <markit> vers=4
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| 13:04 | <Hyperbyte> Have you -tried- to just export /home?
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| 13:04 | I'm pretty sure this pseudo dir that's being talked about in that howto is just the way the howto likes to do it, not something that NFS actually requires.
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| 13:04 | <markit> Hyperbyte: I'm reading last url I gave you, seems that the fsid=0 is needed for compatibility if you want to mount in the client with nfs3 syntax
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| 13:04 | <Hyperbyte> So, eliminate fsid=0 then
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| 13:05 | Just copy the /etc/export line for /data I gave you, change it to /home and see if it works
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| 13:05 | Will take you a whole of two minutes and it'll put an end to this discussion.
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| 13:05 | <markit> Hyperbyte: I'll do some tests, thansk for the clarification, that also explains why we were unable to understand each other about my "/nfs4" dir problem
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| 13:05 | <Hyperbyte> :)
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| 13:06 | Out of curiousity, why would you mind if users navigated to their home dirs via an alternate path?
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| 13:06 | <markit> Hyperbyte: sure, but I thought you were doing thinks like in that tutorial, and the explaination of the /nfs4 stuff would have took 4 seconds ;P
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| 13:07 | Hyperbyte: they can be confused, and I fear that ACL can be ignored, or they save with one path and don't understand what they are doing... I mean, only one path = less troubleshoot on my side
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| 13:08 | I have to find a way to make Dolphin not list them as separate devices (in the future, now I've other stuff to do first)
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| 13:12 | <Hyperbyte> :)
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| 13:12 | <markit> exportfs: /etc/exports:3: unknown keyword "vers=4"
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| 13:12 | ops,my mistake
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| 13:12 | :)))
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| 13:12 | (I put it in exports lol)
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| 13:13 | * markit needs more sleep | |
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| 13:16 | <Hyperbyte> FYI, my /etc/fstab entry just contains "supportserver:/data /data nfs defaults 0 0"
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| 13:16 | The vers=4 is done automatically
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| 13:16 | But I'm using pretty recent versions of everything, so that might make the difference.
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| 13:19 | <markit> Hyperbyte: me too.. with ... /data nfs4 ... kde fails login
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| 13:20 | <Hyperbyte> Oh... you're using KDE?
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| 13:20 | <markit> yes
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| 13:23 | <Hyperbyte> I've read nothing but bad about KDE and NFS home dirs
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| 13:24 | I think there are workarounds though.
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| 13:25 | <markit> Hyperbyte: I had a lot of problems until I changed sync with async, that alleviates the HUGE I/O
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| 13:25 | then there is the problem that ~.kde symlinks to /var/tmp and in sshfs does not work or something like that (don't remember)
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| 13:26 | with nfs3 and async is working, now I want to try with nfs4... using nfs4 "your way" does not
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| 13:26 | I try with the "root" virtual then, just for curiosity
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| 13:26 | maybe that makes possible a symlink among home and var/tmp, since I export both as NFS shares
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| 13:36 | <Hyperbyte> markit, first I'd try to find out exactly what the problem is.
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| 13:37 | <markit> Hyperbyte: I know that the above problem is for startkde unable to create a symlink
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| 13:52 | <ltspuser_58> hello all
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| 13:53 | i'm having a problem with fat clients being able to load their local hard drives
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| 13:54 | in the respective stanza of lts.conf i have LOCALDEV_DENY_INTERNAL_DISKS = False
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| 13:54 | as a thin client, it mounts the drive OK but not when told to be a fat client. Any ideas?
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| 13:55 | <markit> Hyperbyte: trying to move torward nfs4 syntax, before ldm login I get the error that /var/tmp (that I export) can't be mounted, so bad
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| 13:55 | I can mount it from a different host manually
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| 13:56 | hope alkisg will be here and have time to help in this
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| 13:58 | <ltspuser_58> i believe the problem is with permissions/groups. When the client comes up as a fat client, the permissions/groups do not seem to be brought in as they do when they are thin
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| 14:00 | <markit> Dec 21 15:00:03 gs1204 rpc.mountd[5257]: refused mount request from 192.168.20.103 for /vartmp (/vartmp): unmatched host
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| 14:00 | maybe I've done something worse... miss the * !
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| 14:01 | * markit sleepy or stupid or both | |
| 14:01 | <markit> I'm victim of a copy and paste, lol
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| 14:01 | clients are in a different subnet from the one I used to experiment
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| 14:12 | mmm not, with nfs4 is not able to symlink from home to /var/tmp, both exported with nfs
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| 14:12 | with nfs3 it seem to work
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| 14:26 | <markit> Hyperbyte: bottom of this article says you are right: http://wiki.linux-nfs.org/wiki/index.php/Nfsv4_configuration
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| 14:26 | "The linux implementation allows you..."
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| 14:27 | <Hyperbyte> Yay!
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| 14:30 | <markit> but example export with kubuntu 12.04 says the contrary
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| 14:30 | so I'm really confused
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| 14:32 | in another doc "Note: For security reasons, it is recommended to use an NFS export root which will keep users limited to that mount point only. The following example illustrates this concept."
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| 14:33 | <Hyperbyte> Which, if you have only one directory to export, you already do.
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| 14:39 | <markit> Hyperbyte: do you NEED_IDMAPD=yes in /etc/default/nfs-common ?
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| 14:45 | <Hyperbyte> I use defaults for everything, although mine are Fedora defaults
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| 14:46 | But with ldap, I don't think nfs needs idmapd.
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| 14:46 | <markit> Hyperbyte: ah, sorry, I remember you use ldap, we talked about it yesterday
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| 14:55 | <mnevans> Hello LTSP World. Having a problem getting isc-dhcp-server started.
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| 14:55 | <alkisg> ltspuser_58: normal users don't have access to internal disks, neither on normal linux installations nor in fat clients
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| 14:56 | ltspuser_58: users in the admin group will have access, if they login on fat clients
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| 14:56 | <mnevans> Error is " No subnet declaration for eth1".
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| 14:56 | <alkisg> ltspuser_58: If you want to change that, you can do so from the policykit configuration
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| 14:56 | <mnevans> I have the interface listed in /etc/defaults/isc-dhcp-server.
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| 14:56 | This is debian/wheezy beta 4 install.
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| 14:58 | Here is the subnet declaration in /etc/ltsp/dhcpd.conf: http://pastebin.com/STtMLWsF
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| 14:59 | I have only in /etc/dhcp3/dhcpd.conf, the line: include "/etc/ltsp/dhcpd.conf";
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| 15:02 | ifconfig eth1 shows: http://pastebin.com/6Ywde7d2
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| 15:04 | <Hyperbyte> mnevans, what's in /etc/dhcp/dhcpd.conf?
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| 15:04 | (/etc/dhcp3 = dhcp3-server package, /etc/dhcp = isc-dhcp-server package)
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| 15:05 | <mnevans> Solved it I think. :) In /etc/defaults/isc-dhcp-server, the default path is to /etc/dhcp/dhcpd.conf, but should be to /etc/dhcp3/dhcpd.conf. Setting DHCPD_CONF=/etc/dhcp3/dhcpd.conf solved the problem. At least the service started.
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| 15:05 | Just joining this chat makes me smarter! :)
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| 15:06 | <Hyperbyte> Looks like you've succesfully got one DHCP server package running on the config of the other one. :)
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| 15:13 | <mnevans> @ Hyperbyte, I think this is the way debian says to configure it. Now I'm on to a better problem.
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| 15:13 | <markit> alkisg: you not expert of nfs4? I'm using /etc/export with compatible syntax, and if I put in FSTAB_1/2 the syntax for nfs3 (I force that protocol) everything is fine, if I try to use nfs4
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| 15:14 | then I got the infamous "call to lnusertemp..." problem after ldmlogin when kde tries to create symlink under .kde to /var/tmp (that I mount through nfs too)
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| 15:14 | probably a uid problem of who is running lnusertemp
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| 15:15 | <mnevans> The client finds the assigned lan ip, but then says "NFS over TCP not available over 192.168.0.1. I thought debian default used NFS? If so, how do I start that service?
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| 15:16 | <alkisg> markit: me, expert?! Nope, I'm not even a user of NFSv4!
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| 15:16 | <markit> :) lucky man ;P
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| 15:17 | <mip5> Morning - I tried adding 3.5 kernel to chroot by adding backports, and it worked for a while, but now the clients are failing. I edited default pxe config to show more output as clients boot. The clients hang here:
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| 15:17 | Product: USB Optical Mouse
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| 15:17 | Manufactureer: Logitech
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| 15:17 | USB disconnect, device number 11
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| 15:17 | new low speed USB device number 12 using using uhci_hcd
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| 15:17 | New USB device found, idVendor=046d, idProduct=c05a
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| 15:17 | New USB device strings: Nrf=1, Product=2, SerialNumber=0
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| 15:18 | <mnevans> Maybe /etc/init.d/nfs-kernel-server start ? ...status says it's not running...
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| 15:19 | <Hyperbyte> mnevans, yes.
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| 15:23 | <mnevans> Hyperbyte, yes that worked. Now on to even better things, but a simple question. I've updated the server install with formware-linux-{free, nonfree}.
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| 15:24 | How to rebuild the ltsp images such that they reflect these new package installs to the server?
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| 15:24 | is it ltsp-chroot, then apt-get dist-upgrade?
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| 15:25 | <ltspuser_83> Hi
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| 15:26 | <Hyperbyte> Hi!
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| 15:26 | <ltspuser_83> I need some help in two situations...
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| 15:26 | <Hyperbyte> Shoot.
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| 15:26 | mnevans, are you using regular ltsp or ltsp-pnp?
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| 15:27 | <mnevans> Thanks; Regular ltsp
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| 15:28 | I don't know what ltsp-pnp is...
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| 15:29 | <mnevans> well, now I do, thanks to google.
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| 15:29 | <ltspuser_36> Hi again! my connection went down
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| 15:29 | <mnevans> Not using ltsp-pnp.
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| 15:29 | <Hyperbyte> mnevans, in that case, ltsp-chroot will get you into the chroot... you can also modify /opt/ltsp/i386/ directly should you wish
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| 15:29 | <ltspuser_36> I need to know if I can change the path of the chroot and of the tftpboot?
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| 15:29 | And teh other question is more complicated...
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| 15:30 | <Hyperbyte> mnevans, after making changes, run ltsp-update-image. You might also want to run ltsp-update-kernels depending on what you've changed.
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| 15:30 | <ltspuser_36> I need to know if there is any broker that provides the possibility to open ldm sessions in different machine
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| 15:30 | <mnevans> @Hyperbyte, so ltsp-chroot, and then apt-get dist-upgrade will update the chroot to any changes from the server install?
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| 15:31 | <ltspuser_36> like put one user per machine
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| 15:31 | <Hyperbyte> ltspuser_36, you probably can. Question is why would you want to do that?
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| 15:31 | <mnevans> Or just: ltsp-build-client again?
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| 15:31 | <Hyperbyte> mnevans, ltsp-build-client rebuilds the entire client, erasing all changes you've made in /opt/ltsp/i386
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| 15:32 | mnevans, ltsp-update-image updates the chroot from the changes made in /opt/ltsp/i386
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| 15:32 | <ltspuser_36> so the idea is make a connection to a machine that has ltsp and the broker providing user details and then this machine tell the terminal to open session in the user's machine
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| 15:32 | <mnevans> So then: ltsp-chroot and then apt-get update && apt-get dist-upgrade?
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| 15:32 | <Hyperbyte> Assuming you're using NBD (which is default in Ubuntu), the clients don't actually load their stuff from /opt/ltsp/i386. They load it from an NBD image, which you have to update after making changes.
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| 15:32 | <ltspuser_36> because I want to put in another server the chroot and the tftpboot
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| 15:33 | <Hyperbyte> mnevans, you might run into problems with apt, but go ahead and try. If you're worried, make a backup of /opt/ltsp/i386 directory.
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| 15:33 | ltspuser_36, why would you want that?
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| 15:33 | <mnevans> Hyperbyte, it's a fresh install, so nothing to lose, but I would like to know the right way to do this for the future.
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| 15:34 | <Hyperbyte> mnevans, understandable.
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| 15:37 | <mnevans> Hyperbye, I haven't found any documentation of how to do this; can you point me in the right direction?
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| 15:38 | <ltspuser_51> and I need to put the .img in my server and the tftpboot to provide to my terminals
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| 15:38 | and I saw that the ubuntu chroot works good
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| 15:38 | but I have a debian server
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| 15:39 | <mnevans> @Hyperbyte, doing ltsp-chroot -p, apt-get update && apt-get dist-upgrade did nothing. So I'm
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| 15:39 | <ltspuser_51> path*
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| 15:39 | it's possible to put the chroot in another pass?
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| 15:39 | <mnevans> going to try ltsp-build-client and hope it picks up the firmware packages I need for my clients.
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| 15:41 | <ltspuser_51> can I change?
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| 15:45 | <mip5> mnevans: I'm not sure exactly what you're trying to do, but if your clients need firmware, you'll have to install that in the chroot, and update the chroot. Installing it in the server won't necessarily have it show up in the chroot.
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| 15:46 | <ltspuser_51> can I change the path of the chroot and tftpboot?
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| 15:53 | <ltspuser_82> I need to open sessions per user and not per terminal
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| 15:54 | it's possible?
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| 15:54 | <mnevans> mip5: yes, my clients need firmware. So I would do: ltsp-chroot, apt-get install firmware-linux-free, then ...?
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| 15:54 | <ltspuser_82> I need to have a ldm session but per user...
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| 15:54 | <mnevans> then you exit the chroot and run ltsp-update-image
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| 15:55 | to update the filesystem
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| 15:56 | <mnevans> ltspuser_82 & mip5: thanks, I'll give it a try.
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| 15:57 | <ltspuser_82> ;) no problem
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| 15:59 | I know that in lts.conf I can specify, providing MAC, options to each terminal but can I provide depending on the user?
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| 16:05 | <mnevans> @ltspuser_82: ltsp-update-image complains that I am running nfs and not nbd. Is there a way to tell it to use nfs?
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| 16:05 | Or maybe alkisg can answer this one easily?
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| 16:07 | <ltspuser_82> I think if you use NFS you don't need to run ltsp-update-image
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| 16:07 | becase this command is to generate the .img file
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| 16:07 | <markit> ltspuser_82: exactly, the NBD image
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| 16:07 | <ltspuser_82> and this file is only used when you work with nbd
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| 16:08 | I think... I'm not sure
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| 16:08 | <markit> I am :)
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| 16:08 | <mnevans> OK, looks like with nfs I don't need to run ltsp-update-image (there is no image in nfs, right?). Duh...
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| 16:08 | <ltspuser_82> so if you are using NFS you only need to specify the chroot and the nfs mounts the path...
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| 16:08 | yes ;)
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| 16:09 | <markit> mnevans: and also mind where lts.conf is, that is not the same position that is for NBD installation (for nbd is under /var/lib/tftp/i386...) AFAIR
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| 16:15 | <ltspuser_99> I know that in lts.conf I can specify, providing MAC, options to each terminal but can I provide depending on the user?
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| 16:17 | <markit> ltspuser_99: no
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| 16:17 | <mnevans> markit: I was just getting to that, in debian and nfs it is in /opt/ltsp/arch/etc/
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| 16:18 | <ltspuser_99> thks
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| 16:18 | <markit> ltspuser_99: those parameters are using BEFORE you are authenticated
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| 16:18 | so no one knows who you are at that stage, AFAIU
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| 16:20 | <mip5> I added kernel 3.5 by adding backports. My clients wouldn't light up the display unless I ctrl-alt-f1. Once I do that, I can ctrl-alt-f7 and get the login screen.
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| 16:21 | <mip5> someone, maybe Hyperbyte, suggested I edit my pxelinux.cfg/default file by removing quiet splash plymouth:force-splash vt.handoff=7, and that solved the problem. Any ideas?
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| 16:22 | <ltspuser_28> I need to know if theres any way that, depending on the login, we make a ldm session to a certain machine
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| 16:22 | it's ossible?
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| 16:22 | possible?
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| 16:22 | <ltspuser_28> not depending on the machine...
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| 16:22 | depending on a login step...
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| 16:22 | <mip5> ltspuser_28: you can specify parameters for specific machines in lts.conf by using mac address
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| 16:22 | <ltspuser_28> for example when terminal starts...
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| 16:23 | yes...
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| 16:23 | but I don't want per machine
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| 16:23 | because the user has the same server...
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| 16:23 | but he can use all the terminals...
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| 16:23 | and I want that when is that user do a ldm session to a certain server...
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| 16:24 | like a local login...
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| 16:24 | <markit> ltspuser_28: ldm is in that client BEFORE user as entered his username, so how can do that?
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| 16:24 | <ltspuser_28> and lts.conf is field depending on this login...
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| 16:24 | yes I know...
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| 16:25 | It's difficult...
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| 16:25 | Is there any workaround?
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| 16:25 | <markit> there should be a double pass...
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| 16:25 | generig ldm login, once authenticated re-login (automatically) with another server... far beyond my knowledge
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| 16:25 | <ltspuser_28> could be two login steps...
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| 16:25 | <markit> probably alkisg is the only one that can have an idea
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| 16:26 | * markit fighting with his nobody nogroup in his nfs4 shared folder | |
| 16:27 | <markit> Hyperbyte: sorry to bug you, but now I've give up with export /var/tmp too, so performance apart, I just have /home exported. But if I open a terminal and I issue "ls -l" I see that all my files belong to "nobody nogroup", is it normal?
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| 16:27 | <ltspuser_49> ok
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| 16:28 | but alkisg is here?
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| 16:28 | I understand
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| 16:28 | <mip5> gotta run - thanks gang
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| 16:28 | <markit> ltspuser_49: well, probably sometime is busy with his own stuff and life
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| 16:28 | <ltspuser_49> I understand...
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| 16:29 | <markit> ltspuser_49: maybe later you can find some other "guru" around
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| 16:32 | <ltspuser_31> I have another question...
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| 16:33 | <ltspuser_31> so if I take the .img and the tftpboot folder and put in another path
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| 16:58 | <mnevans> Thanks all - your help always appreciated. Have been documenting my ltsp/wheezy install and hopefully could give back by helping with updating documentation for this?
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| 18:25 | <markit> dhcp passes the domain, but if in the fat client I do an hostname -f I don't see it... any clue?
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| 18:25 | in hosts in fact is not listed at all
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| 19:27 | <alkisg> markit: from the client, as root: sudo /usr/lib/klibc/bin/ipconfig -n eth0; cat /proc/cmdline
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| 19:28 | <markit> hi alkisg :) if domain should be set, then is something wrong I did with my tests, I'm trying to "celan up" the VM and try again
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| 19:29 | alkisg: so from dhcp the fat client should have /etc/hosts with the FQDN?
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| 19:30 | * markit struggles with nfs4 and nobody nogroup, but at least know that with nfs3 kde seem to work | |
| 19:36 | <alkisg> markit: yes I think it should work from DHCP, even though I've not tested it... Or, SEARCH_DOMAIN from lts.conf.
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| 19:37 | <markit> seems fundamental for nfs4 user/id mapping, also should be a "good way of setup network" things
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| 19:37 | (I mean, have FQDN set)
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| 19:37 | I'll let you know what I discover
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| 19:55 | <Hyperbyte> markit, everything with nobody/nogroup means idmapd isn't working properly
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| 19:55 | idmapd needs to be running on the server -and- the client
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| 20:04 | <alkisg> Hyperbyte: is there any way to notify nfs4 that we don't need idmapd?
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| 20:04 | Because, by design, uids/gids are the same on the server as on the client?
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| 20:05 | <Hyperbyte> alkisg, there is
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| 20:06 | <alkisg> http://www.spinics.net/lists/linux-nfs/msg13217.html => "Is there an easy way to disable idmapd while still running nfs4 to determine if it is causing the hang?"
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| 20:06 | "Not that I know of."
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| 20:06 | <Hyperbyte> Check /etc/default/nfs
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| 20:06 | There's some idmapd config there to disable it I believe.
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| 20:07 | Regardless, I think you need idmapd even if user ID's match.
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| 20:07 | Not entirely sure about that, but I think nfs4 and idmapd kind of go hand-in-hand
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| 20:08 | <alkisg> I don't see an /etc/default/nfs file, and I don't see an idmapd entry in nfs-common nor in nfs-kernel-server
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| 20:12 | man idmapd => -S Server-only: perform no idmapping for any NFS client, even if one is detected.
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| 20:13 | The problem with ltsp clients and id mapping is that before logon, no users exist at all... numeric IDs there would make more sense than names
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| 20:14 | <Hyperbyte> Why is it a problem?
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| 20:15 | <alkisg> I'm not sure exactly, maybe the nfs client caches the uids/gids
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| 20:16 | But with my first tries I couldn't make nfs4 work, so after 10 minutes I gave up and used nfs3
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| 20:16 | ...which worked on the first try
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| 20:16 | <Hyperbyte> I've been using nfs4 without even trying
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| 20:16 | But then again, I'm also using ldap.
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| 20:16 | <alkisg> Maybe fedora sets it up better, dunno
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| 20:17 | Ah, then the uids are already there
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| 21:10 | <markit> Hyperbyte: ah, on the client also? sigh
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| 21:11 | * markit reading the log | |
| 21:11 | <markit> ups, so no hope to make nfs4 work without ldap?
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| 21:11 | <Hyperbyte> markit, I don't see why you come to that conclusion
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| 21:12 | But, for NFS to work, a user on the client needs to match the user on the server
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| 21:12 | Which is the case with LTSP, so shouldn't be an issue (LTSP takes care of user creation during login)
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| 21:12 | Although for that scenario you do need idmapd
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| 21:12 | <markit> [21:13] <alkisg> The problem with ltsp clients and id mapping is that before logon, no users exist at all... numeric IDs there would make more sense than names
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| 21:13 | <Hyperbyte> With LDAP your user accounts already match
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| 21:13 | <markit> [22:11] <markit> ups, so no hope to make nfs4 work without ldap?
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| 21:13 | <Hyperbyte> markit, I'm pretty sure my clients at the radio station are not configured with ldap, just the server.
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| 21:14 | <markit> Hyperbyte: ok, so I can now try to, in chroot, set /etc/default/nfs-common with NEED_IDMAPD=YES correct?
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| 21:14 | so it runs rpc.idmapd on the client also, I guess
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| 21:14 | <Hyperbyte> markit, I have no idea. Like I said, I haven't messed with the config.
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| 21:15 | Well, I did enabled idmapd and the rpc services on the clients naturally
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| 21:15 | You don't do that via config, you do that via init.
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| 21:15 | update-rc.d Ubuntu uses if memory serves.
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| 21:16 | <markit> wondering if is in rpcbind package
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| 21:17 | <Hyperbyte> Yes, that is needed.
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| 21:17 | Wait, I'll boot a virtual client, peek around for you
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| 21:17 | Oh by the way
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| 21:17 | These kind of things you can also test on a running client
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| 21:17 | Just service idmapd start
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| 21:17 | service rpcbind start
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| 21:17 | etc...
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| 21:17 | <markit> ok
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| 21:18 | <Hyperbyte> I think NFS should update immediately when you next do ls -al
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| 21:18 | But maybe a remount is necessary
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| 21:18 | <markit> idmapd start seems to work, but I've not found the /etc/init.d/imapd... I'm a debian guy, not yet got that upstart stuff and how mixes with old initd
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| 21:19 | I'll dig further, thanks
| |
| 21:20 | <Hyperbyte> My fat clients have rpcbind, rpc.statd, rpciod and rpc.idmapd running
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| 21:21 | Also - my fat clients are -not- configured as LDAP clients
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| 21:21 | Only the server is.. so basically, I have the same setup as you
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| 21:21 | Ubuntu 12.04
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| 21:21 | <markit> kubuntu 12.04
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| 21:21 | I try a clean install now
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| 21:22 | <Hyperbyte> When I do ls -al /home/ I see numeric ID's for owner/group, which is what alkisg just said would be nice behaviour
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| 21:22 | <markit> in these days I've added tests and configs in a cahotic way
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| 21:22 | <Hyperbyte> :)
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| 21:22 | <markit> Hyperbyte: oh, not user?
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| 21:22 | <Hyperbyte> No
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| 21:22 | Because the users don't exist yet
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| 21:22 | :)
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| 21:23 | LTSP creates the user when it logs in, when I do ls -al /home then, I see numeric ID's except for the logged in user
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| 21:23 | <markit> AH!
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| 21:23 | ok, the logged user sees himself
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| 21:23 | thanks a lot :)
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| 21:24 | <Hyperbyte> Wait, it's working?
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| 21:24 | It's been working all along, you just didn't realize that the LTSP client doesn't have any user accounts until after you login?
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| 21:25 | <markit> Hyperbyte: I have to test, I thanks a lot for the info
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| 21:25 | now I have to finish clean my server, reconfigure properly and troubleshoot if not working :)
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| 21:26 | <Hyperbyte> Okay
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| 21:26 | <markit> now I have the user with "nobody nogroup"
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| 21:26 | <Hyperbyte> That's root
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| 21:26 | I believe.
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| 21:26 | <markit> no no, I login as "marco"
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| 21:26 | <Hyperbyte> It's either root, or idmapd not running.
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| 21:26 | <markit> then I open a terminal and ls -l in the home
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| 21:26 | yep, the second ;P
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| 21:26 | <Hyperbyte> Do a ps aux | grep idmapd
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| 21:26 | :)
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| 21:26 | <markit> too late, I'm destroying my sever config
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| 21:26 | <Hyperbyte> :o
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| 21:27 | How harsh.
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| 21:27 | <markit> :)
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| 21:41 | mmm my pc is trasching, better reboot
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