IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 1 September 2009 (all times are UTC)
| 01:30 | * Ryan52 scratches head | |
| 01:31 | <Ryan52> I swear that I added something to ldm to mess with dmrc files.
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| 01:51 | <vagrantc> Ryan52: yeah, but after lenny freeze
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| 01:51 | * vagrantc just wrote a reply | |
| 01:54 | <Ryan52> ah
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| 01:55 | <vagrantc> that was my first thought, too
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| 01:56 | <vagrantc> i test it fairly often... not necessarily every single upload, but often enough
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| 04:08 | <zamba> when i log in to my thin client i get the following error: "internal error, failed to initialize HAL!"
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| 07:06 | <Blinny> Is there anything inherently blocking the use of dual-core clients in LTSP5 / Ubuntu 8.04.2?
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| 07:07 | I saw a message to ltsp-discuss that mirrors my own experience - I had to turn off the 2nd core to make the client act happy.
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| 07:11 | <alkisg> Blinny: I've used my dual core laptop as an ltsp client, no problem here...
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| 07:11 | I've tested it in 8.04 (no .2), 8.10, 9.04 and 9.10
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| 07:12 | <ogra> you mean the 10min bootime ? thats definately etherboot messup
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| 07:16 | <Blinny> Yeah. I was curious if that was somehow related to my problems.
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| 07:16 | I just don't get any video
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| 07:17 | <Blinny> Ohwait
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| 07:17 | What I disabled was 'Intel Hyper-Threading Technology'
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| 07:18 | <ogra> if you use std ltsp on ubuntu that shouldnt affect anything
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| 07:18 | <ogra> the -generic kernel used for the clients supports SMP and HT
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| 07:18 | <Blinny> nbd_server[1944]: Read failed: Inappropriate ioctl for device
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| 07:18 | * ogra sighs | |
| 07:19 | <ogra> how can we ever quieten down that message so people dont ask about it three times a week
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| 07:19 | Blinny, thats normal and expected
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| 07:19 | <Blinny> Well, when it's the only error message given, it tends to draw the eye
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| 07:20 | Ah wait here's a few on the VT
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| 07:20 | Lots of [: 275: ?: unexpected operator and then a few mkswap i/o errors
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| 07:20 | some sort/awk errors in /etc/rcS.d/S32ltsp-client-setup on line 275
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| 07:21 | <ogra> try disabling NBD_SWAP
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| 07:23 | <Blinny> That worked. Why?
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| 07:27 | <ogra> typo ?
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| 07:28 | <Blinny> I don't follow - You mean there's a typo in S32ltsp-client-setup ? or ...?
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| 07:29 | <ogra> in line 275 apparently
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| 07:30 | <Blinny> Hmm. That's just the esac
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| 07:30 | Let me look earlier.
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| 07:45 | <Blinny> Kernel call returned: File exists then the mkswap error loading libuuid.so.1 w/ an input/output error, also swapon: /dev/nbd0: Invalid argument
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| 08:32 | <_Matthias> hello
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| 08:34 | <alkisg> Hello
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| 08:39 | <_Matthias> i need some help, I'm searching for a way to reboot my client of my ltsp by using a shell skript on the server, thx
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| 08:43 | <ftherese> hello...
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| 08:43 | <alkisg> _Matthias: one straightforward way would be to install ssh into the chroot. Another way is mentioned here: https://help.ubuntu.com/community/UbuntuLTSP/AutomatedTCShutodwn
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| 08:45 | <ftherese> I have been working on setting up LDAP for LTSP, but I am a little confused about how that should look. I currently have two ltsp servers, do I need to set up ldap server on them both and have them do redundancy? Or just make one ldap server and the other ltsp server connects as a client...
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| 08:45 | I have read LOTS of documentation on setting this stuff up... I think I have LDAP server set up correctly...
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| 08:46 | but I don't know how they are supposed to communicate with eachother and then deploy the light terminals
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| 08:47 | I'd like to have four ltsp servers at the end, to share the load for the thin clients
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| 08:47 | but I believe only one of them needs to be the ldap server
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| 08:48 | maybe I shouldn't use ldap?
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| 08:49 | <Blinny> I use NIS in a similar setup. My servers are geographically-distant though.
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| 08:50 | <ftherese> I am looking for something that is either easy to set up, or well documented... all the howto's I've found about ldap set up in ubuntu have left me feeling a little lost
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| 08:51 | most of the comments made about the howto's report things not working
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| 08:52 | I am willing to sacrifice security and speed if I can just get it set up...
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| 08:54 | <ftherese> LTSP document indicates three methods for authentication, LDAP, NIS, and Winbind... which is the easiest to set up?
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| 08:55 | <rm-rf> cripes, this system is killing me
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| 08:56 | last night it worked just fine, and this morning, it won't let anyone login
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| 08:58 | i ran ltsp-update-sshkeys and ltsp-update-image --arch i386, then booted the client but it is still denying login
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| 08:59 | in the root shell, when i do 'ssh -l <username> server' it gives me 'ssh_exchange_identification: Connection closed by remote host'
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| 09:00 | i'm assuming that means the sshkeys are mismatched, but shouldn't the ltsp-update-sshkeys fixed that?
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| 09:04 | <Gadi> rm-rf: check the server's /var/log/auth.log
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| 09:07 | <rm-rf> Sep 1 09:08:23 storage1 sshd[23202]: refused connect from 192.168.0.28 (192.168.0.28)
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| 09:08 | <Gadi> heh - that much you knew already ;)
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| 09:08 | you might want to increase the log level of sshd
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| 09:08 | and restart it
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| 09:08 | and then look in syslog and auth.log for more details
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| 09:08 | <warren> look at iptables
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| 09:08 | <Gadi> you can change the log level in /etc/ssh/sshd_config
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| 09:08 | <warren> it's always iptables
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| 09:08 | <rm-rf> this machine has denyhosts
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| 09:09 | <warren> oh
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| 09:09 | except when it isn't
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| 09:09 | <Gadi> lol
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| 09:09 | <rm-rf> so, when the guy kept trying to brute force his account, it added the IP to the hosts.deny list
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| 09:09 | <Gadi> nasty
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| 09:10 | perhaps limit the denyhosts to external IPs
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| 09:10 | <Blinny> It's a good idea to do something like ALL: 192.168.0.0/16 in /etc/hosts.allo
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| 09:10 | (substitute your network/mask of course)
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| 09:10 | <rm-rf> yeah, that's what i'm thinking
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| 09:10 | <Blinny> denyhosts is wonderful.. as long as you account for these sorts of things.
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| 09:11 | Would be even better if it featured interface-specific settings.
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| 09:11 | <rm-rf> 'sshd: ALL: 192.168.0.0/16'
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| 09:11 | is that formatted correctly?
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| 09:12 | or do i not need the sshd?
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| 09:13 | <Blinny> sshd would specify the port
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| 09:13 | <ftherese> Blinny... you use NIS?
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| 09:13 | <Blinny> but that port should be 'ssh' I believe
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| 09:13 | <ftherese> it looks pretty easy to set up... I'm going to try it
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| 09:13 | <Blinny> (as matched in /etc/services)
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| 09:13 | ftherese: I use NIS.
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| 09:13 | <ftherese> so if I set it up for ltsp, the other ltsp servers are clients right?
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| 09:14 | <Blinny> rm-rf: Don't quote me on that 'ssh' / 'sshd' thing
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| 09:14 | <ftherese> or do I have to install the NIS client part in the chroot?
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| 09:14 | <rm-rf> does hosts.deny override hosts.allow, or is it the other way around?
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| 09:14 | <Blinny> ftherese: I would suggest both clients and slaves. That way if the master dies you'll still have authentication
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| 09:14 | ftherese: allow is checked first
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| 09:15 | <Blinny> er, rm-rf: allow is checked first
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| 09:15 | <rm-rf> so, if i just put 'ALL: 192.168.0.0./16', that would just allow anything from anwhere on that subnet, right?
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| 09:15 | <Blinny> rm-rf: Yes.
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| 09:15 | <Blinny> ftherese: It was awhile ago, but I don't think I had to touch the chroot
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| 09:15 | <ftherese> ok
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| 09:16 | so you are suggesting redundancy?
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| 09:16 | <Blinny> ftherese: Always!
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| 09:16 | <ftherese> I hope that isn't complicated... this is starting to make my head spin
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| 09:16 | <Blinny> ftherese: On my network, a T1 may go down, so the site servers needed to be slaves so they could answer authentication queries in the case of not being able to forward to the master
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| 09:17 | ftherese: It's fairly straightforward. Are you Ubuntu?
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| 09:17 | <ftherese> yes
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| 09:18 | <Blinny> ftherese: I followed this: https://help.ubuntu.com/community/SettingUpNISHowTo
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| 09:18 | <ftherese> that is the one I am looking at... but it doesn't mention redundancy/slaves
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| 09:20 | <Blinny> Yeah, I know. That stuff is set in /etc/default/nis
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| 09:20 | I'll be here most of the day if you get stuck. /msg me so we don't chatter off-topic.
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| 09:22 | <ftherese> thanks
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| 09:23 | <sbalneav> Morning all
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| 09:29 | <Blinny> g'morning
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| 10:14 | <chrisben> morning folks.
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| 10:16 | I've several (20) sites running ltsp(1-3 users per site) and ldap authentication against one server. it seems that the clients open many many ldap connections, and keep them open for the durration of the login. is this normal?
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| 10:40 | <Blinny> chrisben: It stands to reason; almost every operation requires authentication (everything is a file, and every file has permissions).
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| 10:41 | <johnny> depending on if credentials should be cached or not
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| 10:42 | of course.. if credentials can change on the fly.. then yes.. the connection should stay open
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| 10:42 | hmm.. it is weird that 70F is somewhat cold now :)
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| 10:47 | <sbalneav> chrisben: Are you JUST doing authentication, or are you also using nss_ldap as well?
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| 10:47 | <chrisben> is there a way to cache credentials without setting up ldap replication or something?
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| 10:47 | sbalneav: I guess I'm unaware of a difference, the tutorial I read told me to use nss_ldap for authentication :)
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| 10:48 | <sbalneav> nss_ldap will be what's keeping things open.
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| 10:48 | <chrisben> Gotcha, what does nss_ldap provide other than auth?
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| 10:49 | <sbalneav> The nss is using the ldap server for handling things like file permissions (i.e. mapping usernames and group names onto their numeric ides"
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| 10:49 | nss doesn't provide auth.
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| 10:49 | pam_ldap is providing auth.
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| 10:50 | <chrisben> if I don't use nss_ldap, will things become angry with just displaying a uid/gid?
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| 10:50 | <sbalneav> yes, so you'll have to use something else.
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| 10:51 | Personall, I use libnss-db, and nss-updatedb
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| 10:52 | This sets up nss services to use an extra db file, which is kept in sync by the nss-updatedb program, which can talk to ldap.
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| 10:52 | <chrisben> Gotcha, so authentication happens over ldap, and the nss stuff happens off a local cache ... I like that better than setting up ldap replication ... :)
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| 10:53 | <sbalneav> I have a cron job set up that has the nss_updatedb program run every half an hour. That way, I only get two ldap hits per server per hour, as opposed to the non-stop ldap traffic otherwise.
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| 10:54 | <sbalneav> the downside is: if you have a LOT of group changes or user changes (i.e. adding users to groups, adding new users) it takes a 1/2 hour for the changes to "filter through"
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| 10:54 | At my site, that's not a problem.
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| 10:54 | YMMV
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| 10:54 | <Blinny> sbalneav: Is there corresponding caching functionality for NIS?
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| 10:55 | <sbalneav> Don't know. I haven't used NIS for 12 years.
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| 10:55 | <chrisben> eh, I donn't think that's an issue either, but if it was, I've got a few bash scripts to run commands on each server via ssh -c
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| 10:55 | so I could force an update if needed.
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| 10:55 | <johnny> sbalneav, does the extra ldap traffic make a real difference?
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| 10:55 | i'm not all that familiar
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| 10:56 | <chrisben> johnny: I've ~4000 current ldap connections right now (persistant)
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| 10:56 | <johnny> and you notice problems because of it?
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| 10:56 | <sbalneav> It does if you've got 20 users all doing word processing with their connection to head office being a low-speed dsl line.
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| 10:56 | <johnny> ah.. surely matters then
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| 10:56 | but would it matter on a faster network?
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| 10:57 | <sbalneav> If it was all locally connected, no, then I wouldn't worry about it.
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| 10:57 | <chrisben> if you were local to the ldap server I'd imagine not as much, but if it's on a remote link, it seems like an awful waste of bandwith.
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| 10:57 | not to mention I have recurring message like this in my logs ...
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| 10:57 | <johnny> chrisben, i just wanted to make sure you knew that if it was the case
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| 10:58 | so you didn't go spending time unnecessarily
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| 10:58 | <chrisben> oh yea, I'm only investigating it because I have frequent time outs and reconnects
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| 10:58 | one box's connection sucks so bad it takes kdm 20m to login to a desktop ...
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| 10:59 | though that seems to have disapeared after uninstalling nscd ...
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| 10:59 | thanks for the help guys, afk from chat while I read some doco on the new prrograms.
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| 11:05 | <chrisben> sbalneav: No manual entry for nss_updatedb
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| 11:06 | would you happen to have a syntax example? :)
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| 11:06 | <sbalneav> nss_updatedb ldap
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| 11:07 | should update from your ldap source
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| 11:07 | <chrisben> where dows it store it's .db ?
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| 11:07 | does*
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| 11:08 | <sbalneav> /var/lib/misc/
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| 11:08 | passwd.db and group.db
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| 11:08 | <chrisben> then I update nsswitch.conf to use db rather than ldap?
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| 11:08 | <sbalneav> # pre_auth-client-config # passwd: compat
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| 11:08 | passwd: compat db
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| 11:08 | # pre_auth-client-config # group: compat
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| 11:08 | group: compat db
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| 11:08 | # pre_auth-client-config # shadow: compat
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| 11:08 | shadow: compat ldap
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| 11:08 | <chrisben> perfect, thanks!
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| 11:09 | <sbalneav> there's the relevant section out of my nssswitch.conf
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| 11:13 | db4.6_dump -p /var/lib/misc/password.db should produce something akin to a password file if it's updated correctly from ldap
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| 11:15 | <chrisben> it will exclude shadow information, correct?
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| 11:16 | <johnny> hmm?
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| 11:16 | <sbalneav> chrisben: Yes. I have shadow information going directly after ldap in my configuration.
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| 11:17 | <chrisben> damm, makes file access much faster, but I still hang up kdm on initializing system services ...
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| 11:17 | no error messages in the logs this time though ...
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| 11:17 | lol
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| 11:18 | Couldn't establish a connection to ws1:9202: IO::Socket::INET: connect: Connection refused
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| 11:18 | in .xsession-errors ...
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| 11:21 | <sbalneav> Looks like something perl-ish isn't working.
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| 11:21 | <chrisben> 9202 TCP lbuscd - running on thin client, waiting for a session to connect up and register
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| 11:21 | <sbalneav> Which version of ltsp are you using?
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| 11:22 | <chrisben> was installed at 4.2 but have installed all updates as of today
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| 11:23 | <sbalneav> So, you're still running 4.2? Or you've switched to 5?
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| 11:23 | <chrisben> I'm running 4.2 + updates, not 5
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| 11:24 | <sbalneav> Well, looks like your lbus isn't running for some reason on the thin client.
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| 11:24 | <johnny> have fun with that..
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| 11:25 | <chrisben> haha!
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| 11:26 | <sbalneav> http://wiki.ltsp.org/twiki/bin/view/Ltsp/LTSP-42-LocalDev#Troubleshooting
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| 11:26 | Would be a good place to start.
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| 11:26 | What kind of server are you running on?
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| 11:26 | <chrisben> oh, it's part of local devices ... no wonder this is the only server with issues ...
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| 11:27 | It's just a plain whitebox running debian sarge.
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| 11:28 | <sbalneav> When you move to Lenny, I'd suggest going with ltsp5, as it's currently supported.
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| 11:29 | <chrisben> yea, that's the plan for this summer, need to redo all the kde kiosk crap though, so I put it off as long as possible :)
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| 11:30 | guess I better get a move on, being that fall is fast aproaching :)
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| 11:31 | <sbalneav> Yeah, you've only got 23 days left :)
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| 11:31 | <chrisben> is there an easy way to make the thinclient spawn a shell via ssh or telnet temporarialy?
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| 11:35 | <sbalneav> Add a "SCREEN_01=shell" to your lts.conf for that terminal
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| 11:35 | <chrisben> how about if I'm not local to the terminal?
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| 11:40 | <_UsUrPeR_> stgraber: ping?
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| 11:40 | <sbalneav> Then you have someone local do it :)
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| 11:41 | <johnny> or enable it in the chroot
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| 11:41 | but the keys will change every reboot..
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| 11:41 | <sbalneav> ssh wasn't there by default in 4.2, iirc. He'd have to compile it.
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| 11:42 | <johnny> ah
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| 11:42 | <sbalneav> I could be wrong.
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| 11:42 | <sbalneav> CAN-o-SPAM: hey ho
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| 11:42 | <johnny> but does it come with a telnetd? :)
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| 11:42 | lol
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| 11:42 | <CAN-o-SPAM> sblaneav: hola!
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| 11:42 | <johnny> i'm just glad i avoided all the ltsp4 stuff
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| 11:42 | <sbalneav> I haven't seen GodFather lately in #sabayon.
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| 11:42 | <johnny> by the time i got here.. warren had already spend serious time
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| 11:43 | <johnny> making my job easier :)
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| 11:43 | <CAN-o-SPAM> sbalneav: not sure ... whats the latest with sabay sabay
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| 11:43 | <sbalneav> Let him know the current one seems to work pretty good.
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| 11:43 | People are having success with thi.
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| 11:43 | <CAN-o-SPAM> sbalneav: issues?
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| 11:43 | <sbalneav> No major ones, so far.
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| 11:44 | SOme keys don't seem to work in the chroot, I haven't looked into that yet.
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| 11:44 | <CAN-o-SPAM> sbalneav: we talking 9.04 or 9.10
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| 11:44 | <sbalneav> Both
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| 11:44 | <CAN-o-SPAM> k
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| 11:44 | <sbalneav> 9.04 in my ppa, and my package made it into base 9.10 with stgraber's help
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| 11:45 | ok
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| 11:45 | I'm off for lunch
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| 11:45 | bbiab
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| 11:45 | <CAN-o-SPAM> k take care, eat well
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| 12:05 | <chrisben> wow unchecking enable the sound system on a thinclient without sound support sure does speed things up ...
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| 12:51 | <Q-FUNK> re
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| 12:58 | <stgraber> _UsUrPeR_: pong
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| 12:58 | <_UsUrPeR_> stgraber: hey!
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| 12:58 | check my PM
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| 15:01 | <PMantis> sbalneav: You areound?
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| 15:05 | <cliebow> more oval than anything
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| 15:05 | 8~)
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| 15:05 | paraboloid perhaps
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| 15:06 | <staffencasa> I think I just hosed my server. I'm getting a "Error: Connection refused" error after the ubunt splash screen and then the (initramfs) prompt. Could someone please help me?
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| 15:06 | * cliebow cliebow goes looking for Heinie | |
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| 15:07 | <alkisg> staffencasa: check the next-server there, if it points to your ltsp server or maybe another rogue dhcp server
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| 15:08 | <staffencasa> I actually commented it out. Should I undo that?
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| 15:08 | <alkisg> No, not in your dhcpd.conf - check the result of ipconfig..
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| 15:08 | OK, first remove "quiet splash" from /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default, and reboot the client
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| 15:09 | Then see what IP info it gets. See the next-server there.
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| 15:11 | (I think it says "rootserver" at this point, just above the "connection refused" message, not "next-server")
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| 15:12 | <staffencasa> rootserver and rootpath look good
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| 15:12 | so does the ip
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| 15:12 | <alkisg> OK, then let's see about the nbd server
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| 15:12 | <staffencasa> not sure if it's worth noting, but I was messing with switching from nfs to nbd at the time i noticed it down
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| 15:13 | <alkisg> Ah. Yeah, that could be a problem. Did you follow the how to from the wiki?
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| 15:13 | <vagrantc> that's pretty notable.
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| 15:14 | <staffencasa> I had a chroot for nfs that was working fine (called SCIM) and so I removed the /opt/ltsp/i386 directory and then copied /opt/ltsp/SCIM to /opt/ltsp/i386, used the wiki in reverse and then ran ltsp-build-client
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| 15:14 | <staffencasa> errr
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| 15:15 | i copied over my working one after it stopped working
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| 15:15 | so both /opt/ltsp/SCIM and /opt/ltsp/i386 are not working now.
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| 15:16 | <alkisg> Urm.... are you sure that was ltsp-build-client - i.e. build the chroot from scratch?
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| 15:16 | <staffencasa> but yeah, I've used the wiki article to successfully go from nbd to nfs
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| 15:16 | <alkisg> This one, right? https://help.ubuntu.com/community/UbuntuLTSP/LTSPWithoutNFS
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| 15:16 | <staffencasa> i did that after i noticed my copy didn't work
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| 15:16 | <alkisg> So now the chroot that you are trying to get to work is /opt/ltsp/i386, and was build from scratch with ltsp-build-client?
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| 15:17 | <staffencasa> yes
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| 15:17 | but both don't work
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| 15:17 | <alkisg> distro/version?
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| 15:18 | <staffencasa> 9.04 Ubuntu
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| 15:18 | <alkisg> OK start with: netstat -tulpn | grep 2000
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| 15:19 | Is nbd-server listening on that port?
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| 15:20 | <staffencasa> i ran that command, nothing came out
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| 15:20 | <alkisg> upload your /etc/inetd.conf to pastebot.ltsp.org ...
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| 15:20 | (you're trying to make the client work with nbd, not nfs, right?)
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| 15:21 | <PMantis> sbalneav: ping
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| 15:21 | <staffencasa> right now, I'd really like to get my nfs /opt/ltsp/SCIM chroot working
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| 15:21 | first
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| 15:21 | !pastebot
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| 15:21 | <ltspbot> staffencasa: "pastebot" is The LTSP pastebot is at http://pastebot.ltsp.org. Please paste all text longer than a line or two to the pastebot, as it helps to reduce traffic in the channel. A link to the content will be pasted in the channel.
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| 15:22 | <ltsppbot> "Staffencasa" pasted "Problems with NFS" (4 lines) at http://pastebot.ltsp.org/493
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| 15:22 | <alkisg> staffencasa: ah, then the client shouldn't be trying to connect with nbd
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| 15:23 | You may have the wrong initrd, =the one using nbd, in your tftpboot dir
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| 15:24 | <staffencasa> should i just delete /var/lib/tftpboot/ltsp/SCIM and then run ltsp-update-kernels?
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| 15:24 | <kawan> Hello alkisg, how are you doing ?
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| 15:25 | <alkisg> Hello
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| 15:25 | <nubae> hi
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| 15:25 | <kawan> I am back to the system, so I can try to run the patch you gave me....unfortunatly gmail is offline.
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| 15:25 | <alkisg> hi nubae
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| 15:26 | <kawan> I have the file but not the commands that were in you mail. Would you be kind enough to copy/past it ?
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| 15:27 | <alkisg> staffencasa: I'm not sure what's going on when ltsp-update-kernels finds multiple chroots. You should verify that pxelinux.cfg/default points to the correct kernel and initrd for the clients to boot.
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| 15:27 | kawan: you have the floppy image? Did you edit the gpxe.txt file?
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| 15:28 | <kawan> alkisg, no sorry I just have the grubgpxe.img file. The rest of the instruction are part of the mail that I can not access now.
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| 15:29 | <alkisg> kawan: ok, first mount the image with something like: sudo mount -o loop grubgpxe.img /mnt
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| 15:29 | Then, read & edit /mnt/boot/gpxe.txt
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| 15:30 | When you're done, unmount the image with sudo umount /mnt. Do you want to write it to a floppy or a cd?
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| 15:31 | <kawan> cd
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| 15:32 | I manage to edit the fle
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| 15:32 | the file gpxe.txt
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| 15:34 | <alkisg> OK. To convert the floppy to a cd, see here: https://help.ubuntu.com/community/UbuntuLTSP/grubgpxe?action=recall&rev=2#Boot from CD
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| 15:35 | <kawan> what this line set next-server with an IP adress ?
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| 15:37 | <alkisg> kawan: delete *everything* from gpxe.txt, and just put the instructions that you used when you manually booted the pc with the gpxe cd
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| 15:37 | <kawan> ok. Got it
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| 15:41 | <staffencasa> alkisg, I got it. I had /opt/ltsp/i386 set to boot to nbd. going through the steps on the wiki to change it to nfs fixed both that chroot and /opt/ltsp/SCIM. While I don't understand why, I'm happy everything's back to the way it was. Thanks for your help, it is very appreciated
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| 15:43 | <alkisg> staffencasa: well so long that it works... :)
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| 15:44 | <staffencasa> exactly
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| 15:47 | <sbalneav> PMantis: Hello!
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| 15:47 | <PMantis> HEY!
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| 15:48 | sbalneav: sane isn't being very sane for me. lol
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| 15:48 | <sbalneav> What's happening?
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| 15:49 | <ltsppbot> "PMantis" pasted "(in) SANE activity, for sbalneav" (4 lines) at http://pastebot.ltsp.org/494
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| 15:50 | <kawan> alkisg: the command dd if=/dev/fd0 of=grubgpxe.img throw an error: /dev/fd0 I/O error
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| 15:50 | <PMantis> sbalneav: I installed dnsutils onto the chroot, ssh'd into the thin client... nslookup does a proper reverse DNS for the server and the thin client.
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| 15:50 | sbalneav: saned -a -d128 doesn't show anything extra.
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| 15:51 | <alkisg> kawan: never mind, that command was for the case that you had the floppy in the drive, not in an image.
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| 15:51 | Just put the final grubgpxe.img in a directory, get inside this dir, and run: mkisofs -r -b grubgpxe.img -o grubgpxe.iso .
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| 15:52 | <sbalneav> PMantis: Do you have a running shell session on the ltsp terminal?
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| 15:52 | <PMantis> sbalneav: Yes, ssh'd into the terminal.
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| 15:53 | <sbalneav> What happens if you MANUALLY try to start saned?
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| 15:53 | i.e. just at the command line.
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| 15:53 | <PMantis> sbalneav: I pasted the syslog output from that.
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| 15:54 | sbalneav: I also added -d128, but it doesn't give me any more info.
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| 15:55 | <sbalneav> So, even when you start it right from the command line, it just exits immediately?
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| 15:55 | ok
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| 15:55 | <PMantis> sbalneav: yes
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| 15:55 | <sbalneav> Have you got strace loaded in the chroot?
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| 15:55 | <PMantis> Hmmm, nope, but can.
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| 15:56 | <sbalneav> OK, load strace into the chroot, then lets do a strace -o /tmp/saned.out saned -a
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| 15:56 | kawan has joined #ltsp | |
| 15:56 | <sbalneav> You'll get a .out in the terminal's /tmp
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| 15:57 | scp it to the server, then mail it to me.
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| 15:57 | <ltsppbot> "PMantis" pasted "sbalneav: sane, ran with strace" (71 lines) at http://pastebot.ltsp.org/495
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| 15:57 | <PMantis> sbalneav: Oh, didn't see your command line suggestion.
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| 15:58 | <sbalneav> ah. update:
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| 15:58 | <PMantis> sbalneav: Does what I gave you suffice?
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| 15:58 | <sbalneav> strace -f -o...
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| 15:58 | no, need -f so we can follow the fork
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| 15:59 | <PMantis> sbalneav: k
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| 16:00 | <sbalneav> What's in the chroot's /etc/saned.conf?
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| 16:00 | sorry, /etc/sane.d/saned.conf
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| 16:02 | <PMantis> sbalneav: looking
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| 16:03 | <kawan> alkisg: I modified the gpxe.txt. How to I generate a new grubpxe.img with the modification ?
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| 16:03 | <PMantis> sbalneav: The only non-comment line has a +, and only a +
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| 16:03 | <sbalneav> That should be OK, that allows all hosts to connect.
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| 16:04 | <PMantis> yup
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| 16:04 | <alkisg> kawan: you don't need to, I think mount -o loop mounts it read-write
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| 16:04 | So just umount it and it's ready
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| 16:04 | (you modified /mnt/boot/gpxe.txt, right?)
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| 16:05 | <kawan> yes i did.
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| 16:05 | <alkisg> OK, it should contain the new gpxe.txt now, then...
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| 16:05 | <kawan> ok.
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| 16:05 | <alkisg> So just do `sudo umount /mnt` and then create the .iso
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| 16:10 | <kawan> it's on the way. BTW gmail is still unavailable. Wonder what's going on....
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| 16:11 | <alkisg> Yeah, here (=Greece) too...
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| 16:15 | <PMantis> sbalneav: Any other things to try?
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| 16:16 | <alkisg> Ah, kawan, if I remember correctly, gpxe.txt needs to begin with #!gpxe
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| 16:16 | <sbalneav> PMantis: Did you send me the dump?
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| 16:16 | <alkisg> So when I told you to delete everything in it, if you also deleted the first line, it may not work...
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| 16:17 | <sbalneav> ltspbot: status
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| 16:17 | <ltspbot> sbalneav: I am connected to freenode as ltspbot.
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| 16:17 | <PMantis> sbalneav: It shows as sent 17 minutes ago, you should have it by now.
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| 16:17 | <sbalneav> Might be stuck in my greylisting.
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| 16:18 | <PMantis> sbalneav: Heh.
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| 16:18 | <warren> Anybody touching ltsp-trunk? I want to tag.
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| 16:18 | <sbalneav> Pastebot me the last 50 lines or so.
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| 16:18 | <PMantis> sbalneav: k
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| 16:18 | <sbalneav> Hello warren!
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| 16:18 | <warren> sbalneav: hello
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| 16:18 | sbalneav: anything new?
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| 16:18 | <sbalneav> Been making lots of improvements to sabayon
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| 16:19 | <PMantis> sbalneav: only 69 lines total, I'll just past the whole thing.
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| 16:19 | <ltsppbot> "PMantis" pasted "sbalneav: sane, ran with strace, last 50 lines" (69 lines) at http://pastebot.ltsp.org/496
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| 16:20 | <sbalneav> That's even with the -f?
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| 16:20 | <PMantis> sbalneav: Yes, strace -f -o /tmp/saned.out saned -a
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| 16:21 | <warren> I'm tagging ltsp-trunk
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| 16:21 | ok?
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| 16:22 | <sbalneav> I'm ok with it, don't know about stgraber, vagrantc, et al.
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| 16:22 | PMantis: Hm.
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| 16:24 | 4180 socket(PF_FILE, SOCK_DGRAM, 0) = 3
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| 16:24 | 4180 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
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| 16:24 | 4180 connect(3, {sa_family=AF_FILE, path="/dev/log"}, 110) = 0
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| 16:24 | 4180 send(3, "<31>Aug 7 15:30:04 saned[4180]:"..., 87, MSG_NOSIGNAL) = 87
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| 16:24 | 4180 getpeername(1, 0x8053d00, [128]) = -1 ENOTSOCK (Socket operation on non-socket)
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| 16:24 | Is there a /dev/log on the thin client?
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| 16:24 | <PMantis> !pastebot > sbalneav
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| 16:24 | <ltspbot> PMantis: Error: "pastebot" is not a valid command.
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| 16:24 | <PMantis> :-)
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| 16:25 | Yes
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| 16:25 | <warren> tagging
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| 16:26 | <sbalneav> Interesting that it's doing a getpeername(1, ...) which SHOULD be stdout.
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| 16:26 | <warren> are we doing a BTS this year?
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| 16:26 | <sbalneav> Yes!
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| 16:26 | <warren> same place?
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| 16:26 | <sbalneav> You coming?
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| 16:26 | Yes
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| 16:26 | * PMantis likes BTS | |
| 16:26 | <warren> should really announce it early
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| 16:26 | sbalneav: depends when
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| 16:26 | <sbalneav> I think it's on the LTSP site.
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| 16:26 | <warren> sbalneav: i'm doing lots of travel
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| 16:26 | <sbalneav> I'd love to see you there
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| 16:27 | <warren> we should do a ceremonial 5.2.0 release
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| 16:27 | "nothing really changed"
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| 16:28 | <sbalneav> PMantis: Well, I'm going to poke through the saned code. Just out of curiosity, what happens if you add the server's IP directly to the saned.conf, as opposed to the +?
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| 16:28 | <PMantis> sbalneav: I'll try
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| 16:28 | The same...
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| 16:29 | check_host: getpeername failed: Socket operation on non-socket
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| 16:29 | init: access by host [error] denied
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| 16:29 | but, 'nslookup <ipaddress>' works for the server and client IP.
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| 16:30 | Although one is non-authoritive.
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| 16:30 | <sbalneav> Interesting.
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| 16:30 | <PMantis> Or, excuse me, Non-authoritative
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| 16:31 | <sbalneav> OK, I have to head out to pick up my wife. I'll be on again in an hour. Are you staying long at the office?
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| 16:31 | <PMantis> Just to clarify, nslookup was ran on the client root shell
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| 16:31 | sbalneav: I'll be leaving shortly, but I can ssh to this from home, too.
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| 16:33 | <sbalneav> PMantis: OK, I'll look for you later.
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| 16:33 | I'm sure it's just something silly config wise.
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| 16:33 | <PMantis> sbalneav: Usually is, but it escapes me
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| 18:38 | <PMantis> sbalneav: Any new ideas to try?
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| 18:45 | <sbalneav> PMantis: Well, I'm looking through the code now
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| 18:46 | Do you have DNS enabled on the thin clients?
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| 18:46 | <PMantis> sbalneav: Cool, just wanted to make sure you weren't waiting for me.
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| 18:46 | sbalneav: Yes, remember the nslookup comments I made? :)
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| 18:47 | <sbalneav> PMantis: I've got about 35 things on the go here.
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| 18:47 | OK, it seems to be in the dns code that it's failing.
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| 18:48 | On my box here, I haven't got dns enabled in the thin clients. Try disabling dns
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| 18:48 | <PMantis> sbalneav: Yeah, I'm pretty sure this isn't the only thing you're working on, don't worry about it!
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| 18:48 | I'll try commenting all in resolv.conf
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| 18:49 | sbalneav: OK:
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| 18:49 | root@ws077:~# ping ws077
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| 18:49 | PING ws077 (127.0.0.2) 56(84) bytes of data.
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| 18:49 | and: ping: unknown host netserv
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| 18:49 | That looks disabled to me.
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| 18:50 | <sbalneav> 127.0.0.*2*!?
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| 18:50 | <PMantis> sbalneav: I also put saned.conf back to "+" only.
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| 18:51 | <sbalneav> THAT doesn't seem right
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| 18:51 | <PMantis> That's what seems to be built into /etc/hosts
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| 18:51 | 127.0.0.1 localhost
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| 18:51 | 127.0.0.2 ws077
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| 18:51 | 10.145.10.15 server
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| 18:52 | <sbalneav> So you can ping ws077?
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| 18:52 | <PMantis> yup
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| 18:52 | <sbalneav> Yeah, it's that way on my box too.
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| 18:52 | OK
| |
| 18:53 | Does saned start now?
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| 18:53 | <PMantis> No change. :(
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| 18:53 | <sbalneav> Can you pastebot your lts.conf file?
| |
| 18:54 | * Lns crawls out from under the table | |
| 18:54 | <PMantis> sbalneav: I can just paste it here...
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| 18:54 | [default]
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| 18:54 | SCANNER=True
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| 18:54 | There, 2 lines.
| |
| 18:55 | sbalneav: of course, that's the one in /var/lib/tftpboot/ltsp/i386/lts.conf
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| 18:55 | <sbalneav> right.
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| 18:56 | Have you got updates enabled in the chroot? i.e. have you copied the server's /etc/apt/sources.list to /opt/ltsp/i386/etc/apt ?
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| 18:57 | <PMantis> sbalneav: Since LTSP5 is only in testing right now, nothing special in there. I *did* have SEARCH_DOMAIN, DNS_SERVER, was playing with SCREEN_02=shell (that doesn't work) and LOCAL_APPS. Those are all commented out.
| |
| 18:57 | sbalneav: Yes, I can apt-get on the client. Of course, lost on reboot...
| |
| 18:57 | Or, I can chroot, install and rebuild the image.
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| 18:58 | <sbalneav> I'd say chroot and update the image
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| 19:00 | <PMantis> sbalneav: With what?
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| 19:00 | sbalneav: I mean, what change?
| |
| 19:02 | <sbalneav> Well, it just makes sure when we reboot, we get all the latest stuff we need.
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| 19:02 | As well, there may be kernel updates that affect things, and updating "on the fly" won't get the newest kernels.
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| 19:04 | <PMantis> sbalneav: Oh, you're suggesting a dist-upgrade?
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| 19:04 | <sbalneav> Yes.
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| 19:05 | <PMantis> sbalneav: Done: 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
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| 19:05 | The image was created last week.
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| 19:05 | as in *first* created.
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| 19:09 | <sbalneav> PMantis: Yes, but ltsp-build-client only pulls from <dist> and not <dist>-updates
| |
| 19:09 | So you won't be getting any updates unless you add them to the chroot's sources.list.
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| 19:10 | The "best" way to do that is to simply copy over the server's
| |
| 19:11 | <PMantis> Ahhhh
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| 19:13 | <PMantis> sbalneav: should I update SEARCH_DOMAIN, DNS_SERVER in lts.conf?
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| 19:14 | <sbalneav> Well, it doesn't seem to be the problem, so I'd say sure.
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| 19:14 | <PMantis> sbalneav: updating now.
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| 19:15 | Quite different than LTSP 4.2. I got really good at diagnosing that a couple years back.
| |
| 19:16 | Then, I thought jammcq was crazy when he said "Moo Cow". LOL
| |
| 19:16 | <sbalneav> Well, a lot of things are better. Some things are different. One or two things aren't as good.
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| 19:16 | <PMantis> sbalneav: Such is the way of progress.
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| 19:17 | 45% downloaded
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| 19:17 | <sbalneav> k
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| 19:18 | * PMantis wonders if he should've hardlinked the contents of /var/cache/apt/archives/ into the chroot. | |
| 19:19 | <PMantis> !paste
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| 19:19 | <sbalneav> No, choot can't see anything outside.
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| 19:19 | <ltspbot> PMantis: "paste" is try !pastebot
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| 19:19 | <PMantis> !pastebot
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| 19:19 | <ltspbot> PMantis: "pastebot" is The LTSP pastebot is at http://pastebot.ltsp.org. Please paste all text longer than a line or two to the pastebot, as it helps to reduce traffic in the channel. A link to the content will be pasted in the channel.
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| 19:19 | <PMantis> oh, duh
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| 19:20 | <ltsppbot> "PMantis" pasted "Updates inside the chroot" (19 lines) at http://pastebot.ltsp.org/497
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| 19:20 | <PMantis> sbalneav: FYI, what's being upgraded.
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| 19:20 | map7|away is now known as map7 | |
| 19:21 | <PMantis> Oh, that means I'll need to update /opt/ltsp/i386/etc/init.d/ltsp-client-core again...
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| 19:21 | <sbalneav> Don't bother for the moment.
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| 19:21 | We can just start it manually 'till we get it right :)
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| 19:22 | <PMantis> true
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| 19:22 | Whooohoo! Some of the OpenSSH server host keys on this system were generated with a version of OpenSSL that had a broken random number generator.
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| 19:23 | finishing install of packages
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| 19:26 | sbalneav: running: ltsp-update-image --arch i386
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| 19:27 | Hmmm, I can't seem to unmount /proc inside the chroot, generating errors.
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| 19:28 | Guess I can just reboot the server...
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| 19:28 | marvelsss has joined #ltsp | |
| 19:29 | <PMantis> sbalneav: hmmm, if I reboot the server with the thin client up, will it hang and lock me out of the thin client, preventing a reboot?
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| 19:29 | No physical access to the thin client right now.
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| 19:29 | <sbalneav> You shouldn't need to reboot the server
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| 19:29 | just the thin client.
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| 19:30 | But before you do tht
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| 19:30 | <PMantis> Building the client image, I'm getting lots of: Failed to read file /opt/ltsp/i386/proc/iomem, creating empty file
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| 19:30 | Can't umount /proc inside the chroot. :(
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| 19:30 | root@tulip-LTSP5:/# umount /proc
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| 19:30 | umount: /proc: device is busy
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| 19:31 | <sbalneav> do a umount -f /proc
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| 19:31 | in the chroot
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| 19:32 | <PMantis> Well, proc should mount over the nbd filesystem on bootup anyhow...
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| 19:32 | with -f: # umount -f /proc
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| 19:32 | umount2: Device or resource busy
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| 19:32 | umount: /proc: device is busy
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| 19:33 | Ahhh.
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| 19:34 | Oh crap... gotta reboot the server.
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| 19:34 | Did inside the chroot: for file in /etc/init.d/*; do $file stop; done
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| 19:35 | Included "halt" d'oh.
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| 19:35 | The dist-upgrade started some services inside the chroot.
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| 19:35 | <sbalneav> ah
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| 19:36 | <PMantis> my little command was too inclusive. :)
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| 19:36 | Yup, it shut down the entire VM.
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| 19:36 | Booting up now.
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| 19:38 | ok, updating image again.
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| 19:39 | Still have access to the thin client, good. Rebooting it now.
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| 19:40 | tailing syslog...
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| 19:41 | Hmmm, ltsp-client-core wasn't overwritten...
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| 19:41 | still running: check_host: getpeername failed: Socket operation on non-socket
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| 19:43 | ssh'd to the thin client, and the sources.list is huge, so it's definitely from the server.
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| 19:44 | and update & dist-upgrade show 0, so it was updated correctly, and the new image was pulled down.
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| 19:45 | sbalneav: still at a loss. :(
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| 19:46 | <sbalneav> ok
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| 19:47 | what happens if you just start saned with -s
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| 19:48 | <PMantis> Hmmm
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| 19:48 | main: [1] bind failed: Address already in use
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| 19:49 | <sbalneav> there isn't a saned already running, is there?
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| 19:50 | <PMantis> sbalneav: ps aux | grep sane is blank
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| 19:50 | map7 is now known as map7|away | |
| 19:50 | <PMantis> netstat -anp | grep "LISTEN " show no trace of sane.
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| 19:51 | :-) I see your daemon: ltspfsd
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| 19:51 | <sbalneav> ok. This seems really goofy, but lets install openbsd-inetd in the chroot, and configure saned to work with that.
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| 19:52 | <PMantis> heh, Yeah... it should work w/o that... but ok.
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| 19:53 | For now, I'm doing it "throw-away"... on the thin client, not in the chroot.
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| 19:53 | <sbalneav> ok
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| 19:53 | that should be fine
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| 19:53 | the saned manpage should have the "correct" inetd.conf line.
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| 19:55 | cliebow has joined #ltsp | |
| 19:55 | <cliebow> evening LTSP!!
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| 19:55 | <PMantis> cliebow: Hiya!!
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| 19:55 | <sbalneav> Evening cliebow
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| 19:55 | cliebow: Any good news?
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| 19:55 | <cliebow> Hey Hey! BEAUTIFUL NIGHT HERE
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| 19:56 | jOB FELL THRU FOR NOW
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| 19:56 | <PMantis> sbalneav: Found it on google,
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| 19:56 | <cliebow> split decision..some wanted absolutley full time
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| 19:57 | Hi Steve!
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| 19:58 | <sbalneav> Too bad, they don't know what they're missing.
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| 20:00 | <cliebow> thanks for that..the dir of info dervices saisd as much too=
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| 20:00 | crap..just got off the staging..
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| 20:01 | thanks for that..their director of information said the same thing..the only thing that held me back was asking how flexible th hours could be
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| 20:01 | cause for what they are offering for salary i d have to continue boating
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| 20:02 | even if i hated it
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| 20:03 | <cliebow> she said if this guy or gal didnt work out she'd be calling
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| 20:05 | <PMantis> sbalneav: You really want an xinetd service?
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| 20:05 | <sbalneav> No, not xinetd, the openbsd-inetd package
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| 20:06 | That's the "simple" one
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| 20:06 | <PMantis> I'm not as familiar with it... so not as simple to me. :)
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| 20:08 | <sbalneav> it's the classing inetd.
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| 20:08 | the one we used to use in 4.2 :)
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| 20:10 | <PMantis> Yeah, classic. I see it's a "<service_name> <sock_type> <proto> <flags> <user> <server_path> <args>" format.
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| 20:10 | I don't see a tcp port.
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| 20:10 | <sbalneav> service_name is the tcp port
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| 20:11 | should be 6566
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| 20:11 | so the line should be:
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| 20:11 | <PMantis> 6566 stream tcp nowait saned saned /usr/bin/saned
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| 20:12 | <sbalneav> should work.
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| 20:12 | add that to the inetd.conf file, and restart inetd on the thin client
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| 20:13 | <PMantis> There's no /etc/init.d file for that... weird!
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| 20:15 | <sbalneav> should be /etc/init.d/openbsd-inetd
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| 20:15 | <PMantis> Ohhhhhhhhhhh
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| 20:15 | forgot the openbsd, and my eyes glanced right over it. LOL
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| 20:15 | ok, restarted.... sorry.
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| 20:16 | netstat shows it's listening.
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| 20:17 | <sbalneav> ok, well, what happens if you try a "telnet ws077 6566" from the server?
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| 20:17 | <PMantis> Working on that now.
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| 20:17 | <sbalneav> Saned should spawn
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| 20:17 | <PMantis> Apparently have the wrong path to saned.
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| 20:17 | * sbalneav hopes | |
| 20:18 | <sbalneav> ah, oah yeah
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| 20:18 | /usr/sbin
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| 20:19 | <PMantis> I matched sane-port to 6566 in /etc/services...
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| 20:19 | so: inetd line: sane-port stream tcp nowait saned saned /usr/sbin/saned
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| 20:19 | which saned confirms the path.
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| 20:20 | <sbalneav> ok, is there a saned user?
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| 20:20 | in the chroot? If not, change the user to root
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| 20:21 | <PMantis> I just changed it to root.
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| 20:21 | <sbalneav> k
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| 20:21 | restart the inetd, and lets see
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| 20:21 | <PMantis> ok: ws077 inetd[4709]: execv root: Permission denied
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| 20:21 | pos
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| 20:22 | inetd is running as root.
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| 20:22 | -rwxr-xr-x 1 root root 45408 2008-03-25 13:32 /usr/sbin/saned
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| 20:23 | <sbalneav> Hooray.
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| 20:23 | Can you test scanning from there, or is that a tomorrow thing?
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| 20:24 | <PMantis> Telnetting still gived permission denied...
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| 20:25 | So, I showed you the permissions of the binary.
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| 20:25 | Oooooooooooooooh
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| 20:26 | I got it.
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| 20:26 | had one too many "root" s on the inetd line.
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| 20:26 | <sbalneav> ah
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| 20:26 | <PMantis> so, it was trying to run "root" with /etc/sbin/saned as a param
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| 20:27 | So now, I get:
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| 20:27 | Sep 1 21:25:34 ws077 saned[4787]: check_host: access by remote host: 172.22.175.100
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| 20:27 | Sep 1 21:25:45 ws077 saned[4787]: init: bad status=0 or procnum=1751715082
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| 20:27 | I typed "hi" to it, and it didn't like that.
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| 20:27 | but it looks good.
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| 20:27 | <sbalneav> ok
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| 20:27 | Lns has quit IRC | |
| 20:28 | <PMantis> I'm not sure how to test it from here... there's nothing in the scanner right now.
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| 20:28 | <sbalneav> OK, well, we can test that tomorrow, I suppose.
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| 20:28 | I'll have to modify the startup a bit though.
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| 20:29 | I'll have some changes for you for the init script tomorrow.
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| 20:30 | <PMantis> You get my email yet?
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| 20:30 | if so, you can just reply.
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| 20:30 | Should I made this method more permanent by installing to the chroot?
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| 20:33 | <sbalneav> PMantis: Yeah, I thought you sent it to my @ltsp.org, instead it went to my @alburg.net address :)
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| 20:33 | PMantis: Hmmm
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| 20:33 | Keep track of the inetd.conf line
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| 20:33 | other than that, no.
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| 20:37 | <PMantis> sbalneav: That's the only one I had, from the email that Jim forwarded to me. :)
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| 20:38 | sbalneav: Thanks for the help! Hope it wasn't too much trouble.
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| 20:39 | <sbalneav> Not at all.
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| 20:39 | That's what I'm here for :)
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| 21:51 | <stgraber> evening
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| 21:52 | <sbalneav> Evening stgraber
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