IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 6 November 2010 (all times are UTC)
| 01:26 | alkisg has joined #ltsp | |
| 01:35 | <hahlo> g'morning, I have had perfectly working ubuntu 10.10 ltsp thin client system, I tried to feed it and make it fat, but fat lady doesn't sing well, if I start over do I just rm -rf all what is under /opt/ or do I need to remove also all ltsp-standalone-server config files?
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| 01:41 | <alkisg> hahlo: rm -rf /opt/ltsp should suffice. What didn't you like with fat clients?
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| 01:42 | <hahlo> I couldn't get it work did something wrong probably
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| 01:42 | <alkisg> Also, you can just move it (sudo mv /opt/ltsp /opt/ltsp-fat) so that you don't have to build it again if you want to retry (e.g. you could have done the same mv for the thin chroot too)
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| 01:43 | Any specific errors that you want to troubleshoot?
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| 01:44 | <hahlo> same ones I spoke earlier, I make sure that 2 nics server has nat and it worked on thin clients but not fat
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| 01:44 | <alkisg> Thin clients do not need nat
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| 01:44 | Do you want to solve that problem or just move back to thin clients?
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| 01:45 | <hahlo> how they connect internet then?
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| 01:45 | <alkisg> Firefox on thin clients runs on the server
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| 01:45 | So it has direct access to the Internet
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| 01:45 | If you want to troubleshoot the problem, we can probably help...
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| 01:46 | <hahlo> I followed these instructions, page is finn but commands are universal of course http://www.arkki.info/kirjasto/index.php?title=LTSP5_Kannettava_Demo
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| 01:47 | and that worked thin client system
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| 01:47 | but not fat
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| 01:47 | <alkisg> You didn't need to do that for thin clients
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| 01:47 | So you have 2 network cards, eth0 and wlan0, right?
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| 01:47 | <hahlo> wonder why this guy thought so he is finn veteran in ltsp
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| 01:48 | yes
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| 01:48 | <alkisg> Can you run `ifconfig -a` on the server and put the result to pastebin?
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| 01:48 | !pastebot
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| 01:48 | <ltspbot> alkisg: "pastebot" :: The LTSP pastebot is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebot, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
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| 01:49 | <hahlo> alkisg: yes after little while I'm diffrent room now and have start ltsp like half an hour
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| 01:50 | <alkisg> hahlo: when you had thin clients, didn't they have internet without going through that page instructions?
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| 01:50 | Those instructions are for *localapps*
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| 01:50 | ...which as I said yesterday need NAT if you have 2 network cards on the server. The same is true for FAT clients.
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| 01:51 | Thin clients do not need NAT. Didn't they work without running those instructions?
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| 01:52 | Also, this page assumes that you have a DNS server running on your LTSP server, which I suppose you don
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| 01:52 | 't
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| 01:53 | Finally, if you're using your laptop as the ltsp server, it's usually easier to use 1 NIC instead of 2.
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| 02:17 | <hahlo> alkisg: didn't try without those instructions I made instructions first thin clients worked well
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| 02:17 | <alkisg> hahlo: well, you didn't need to do them
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| 02:17 | Any of them
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| 02:17 | They are for a special case of LTSP called "localapps"
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| 02:18 | <hahlo> ok I try now ifconfig -a on server
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| 02:18 | <alkisg> Are you still with fat clients? Or did you switch to thin?
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| 02:19 | <hahlo> still with fats
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| 02:19 | <alkisg> OK
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| 02:20 | If you want, we can share your screen with VNC so that it takes less time to find out what you did wrong.
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| 02:20 | <hahlo> http://pastebin.com/V4FsewVM
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| 02:21 | <alkisg> Next, try: dig @localhost www.google.com
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| 02:21 | And upload /etc/ltsp/dhdpc.conf to pastebin
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| 02:21 | Because those instructions that you followed assume that you have a DNS server running on your laptop
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| 02:22 | <hahlo> I try these on server or fat-client?
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| 02:22 | <alkisg> On the server
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| 02:22 | <hahlo> ok
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| 02:22 | <alkisg> */etc/ltsp/dhcpd.conf
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| 02:25 | <hahlo> did I run command correctly space between dig and @ ? http://pastebin.com/USxhKaK
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| 02:28 | <alkisg> " - Unknown paste ID, it may have expired or been deleted!"
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| 02:28 | Yes, with space between them
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| 02:29 | <hahlo> http://pastebin.com/LPeTSBBw
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| 02:29 | can you see this?
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| 02:29 | <alkisg> Yes
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| 02:30 | So you're telling your fat clients to use your laptop as a dns server, but did you install a dns server?
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| 02:30 | If you didn't, then internet won't work
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| 02:30 | Or tell your clients to use your actual dns server
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| 02:30 | OK, instead of running dig you can also check if you have a dns server with: sudo netstat -nap | grep :53
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| 02:30 | (on the server again)
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| 02:32 | <hahlo> dig again http://pastebin.com/epHju0W1
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| 02:33 | <alkisg> "no servers could be reached"
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| 02:33 | <hahlo> my clients are laptop
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| 02:33 | and server is desktop
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| 02:33 | headless
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| 02:33 | <alkisg> So by following that page you told your clients to use your desktop as the dns server, but a dns server isn't running there
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| 02:34 | That's what went wrong (at least)
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| 02:34 | One way to fix it is to put your actual dns server in dhcpd.conf
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| 02:34 | <hahlo> I followed some instruction and it didn't mention dns
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| 02:34 | <alkisg> cat /etc/resolv.conf ==> see your dns server there
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| 02:35 | That line in the wiki page is about DNS: option domain-name-servers 192.168.0.1;
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| 02:35 | <hahlo> and where I put dns just line in dhcpd.conf?
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| 02:36 | <alkisg> http://pastebin.com/LPeTSBBw ==> in line 11
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| 02:36 | <hahlo> ok and then update-image?
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| 02:36 | <alkisg> No
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| 02:36 | <hahlo> reboot server?
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| 02:36 | <alkisg> No update-image needed, but...
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| 02:36 | No
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| 02:37 | Just reboot client, but first...
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| 02:37 | <hahlo> ok I try that
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| 02:37 | <alkisg> ...in order to troubleshoot the client we may need sudo access, so:
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| 02:37 | sudo gedit /var/lib/tftpboot/ltsp/i386/lts.conf
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| 02:37 | <hahlo> yes sudo would be good
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| 02:37 | <alkisg> create that file ^^ and put the following in it:
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| 02:37 | [Default]
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| 02:37 | SCREEN_02=shell
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| 02:38 | SCREEN_07=ldm
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| 02:38 | Then reboot a fat client
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| 02:38 | <hahlo> have to use vim cause only ssh access on server
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| 02:38 | <alkisg> ok
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| 02:39 | hahlo: also, option routers is wrong in your dhcpd.conf
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| 02:40 | option routers 192.168.0.1; ==> put your server IP there, 192.168.0.254
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| 02:40 | Then restart your dhcp server: sudo invoke-rc.d dhcp3-server restart
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| 02:40 | Then restart the fat client again
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| 02:40 | <hahlo> ok
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| 02:50 | hmm network still doesn't work on fatclient cannot sudo either
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| 02:51 | something wrong in my fatclient now
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| 02:52 | maybe I should build it again from scratch?
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| 02:52 | <alkisg> No
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| 02:52 | <hahlo> ok
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| 02:52 | <alkisg> On the fat client now, type: cat /etc/resolv.conf
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| 02:52 | Does it have your real dns server?
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| 02:52 | <hahlo> yes
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| 02:52 | <alkisg> Can you ping it?
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| 02:53 | ping ip
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| 02:53 | <hahlo> but search example.com above it
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| 02:53 | <alkisg> Yes, you put that in dhcpd.conf. it doesn't matter for now.
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| 02:53 | <hahlo> I try ping
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| 02:54 | 100% loss
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| 02:54 | <alkisg> OK, now try: route -n | grep ^0
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| 02:55 | The second IP you see with route should be 192.168.0.254. Is it?
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| 02:56 | <hahlo> command route is available /sbin/route
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| 02:56 | <alkisg> Try: /sbin/route -n | grep ^0
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| 02:56 | <hahlo> and sudo doesn't work
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| 02:56 | ok
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| 02:56 | <alkisg> Right, sudo won't work within the session.
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| 02:57 | It will work if you switch to vt2, but you don't need that now
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| 02:58 | <hahlo> I see only one line 0.0.0.0 192.168.0.254 0.0.0.0 eth0
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| 02:58 | <alkisg> Nice
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| 02:58 | So the problem is that you didn't do NAT on the server
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| 02:58 | Go to the server, and run:
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| 02:58 | sudo -i
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| 02:58 | iptables -t nat -A POSTROUTING -j MASQUERADE
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| 02:58 | echo 1 > /proc/sys/net/ipv4/ip_forward
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| 02:58 | exit
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| 02:59 | Then try again to access the internet from the fat client
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| 03:01 | <hahlo> it works !
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| 03:01 | <alkisg> Nice. But the NAT we did wasn't permanent
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| 03:01 | You need to follow the NAT wiki page that I told you yesterday
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| 03:02 | <hahlo> ok will look into it probably those my instructions didn't work at all but thin client didn't need them
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| 03:02 | <alkisg> Also, delete the lts.conf file that you created, we won't need `sudo` on the fat client after all :)
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| 03:03 | <hahlo> ok thanks
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| 03:03 | <alkisg> Yes, I know that the thin clients do not need NAT. You shouldn't have followed that wiki page for thin clients.
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| 03:03 | <hahlo> ok thanks again
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| 03:03 | <alkisg> You're welcome
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| 12:38 | <hahlo> alkisg: now fatclient works as well thinclient before, thank you. Some questions still in mind, does fatclient use clients gpu too? and with fatclients does server do any computing?
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| 12:39 | <alkisg> hahlo: fat clients are like normal installations except for the networked disk
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| 12:39 | They use their own CPU. The server only provides /home and the chroot and authentication
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| 12:40 | <hahlo> what about 3d?
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| 12:40 | <alkisg> They support 3D etc like if ubuntu was normally installed into them
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| 12:40 | So it depends on the graphics driver
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| 12:41 | E.g. if you have nvidia-based clients, they'll run better with the nvidia proprietary driver
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| 12:41 | <hahlo> and you install graphic drivers in serverside chroot?
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| 12:42 | <alkisg> Yes. What graphics cards do they have?
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| 12:42 | <hahlo> I got ati hd3200
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| 12:43 | <alkisg> No idea about ati, some of them have 3D support out of the box, with the open source drivers
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| 12:43 | <hahlo> ok
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| 12:43 | is ltsp-cluster some other thing?
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| 12:44 | <alkisg> ltsp-cluster is a way to do load-balancing if you have several ltsp servers, not just 1
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| 12:44 | <hahlo> but there is no clustering between clients and server?
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| 12:44 | <alkisg> No
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| 12:45 | <hahlo> ok thanks
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| 17:18 | <AndyGraybeal> evening guys
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| 17:19 | it's saturday evening, i got the rest of the night and tomorrow off :)
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| 17:28 | <Trixboxer> hi AndyGraybeal
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| 17:29 | hi guys, is it possible to spy graphics on fat-client from the server ?
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| 17:42 | <AndyGraybeal> hi trixboxejr
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| 17:42 | <Trixboxer> jr ??
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| 17:43 | <AndyGraybeal> trixboxer, i've seen that software made to be used with classrooms to monitor kids work.
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| 17:43 | jr, type..
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| 17:43 | typo
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| 17:43 | <Trixboxer> np
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| 17:43 | <AndyGraybeal> too much 'shine
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| 17:43 | <Trixboxer> hmm
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| 17:43 | what software ?
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| 17:43 | <AndyGraybeal> lemme look it up
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| 17:44 | <AndyGraybeal> gimee a sec, i'm on dial-up
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| 17:44 | <Trixboxer> np
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| 17:44 | take your time :)
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| 17:45 | AndyGraybeal: where are your from ?
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| 17:45 | <AndyGraybeal> i live in southeastern ohio. how about yourselfd
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| 17:46 | <Trixboxer> near mumbai, Mr. Obama has arrived 14 hrs earlier :)
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| 17:46 | have*
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| 17:46 | <AndyGraybeal> italc
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| 17:47 | ah mumbai :) awesome. i've seen a blog from someon in mumbai school system.
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| 17:47 | <Trixboxer> AndyGraybeal: can I pm you ?
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| 17:47 | <AndyGraybeal> yes, sure, i'm not very knowledgable
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| 18:18 | <AndyGraybeal> did you have a look at italc?
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| 18:19 | <Trixboxer> yeah, will set it up tomo
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| 18:19 | its near 5 am here.. have to go now for sleep
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| 18:19 | <AndyGraybeal> :)
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| 18:19 | goodnight :)
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| 18:20 | <Trixboxer> same to you :)... take good care
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| 18:54 | <AndyGraybeal> does anyone use italc with ubuntu 10.04 ? i see the latest release is for karmic
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| 18:55 | <alkisg> AndyGraybeal: http://packages.ubuntu.com/italc ==> 1.0.9.1 for everyone...
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| 19:01 | <AndyGraybeal> okay thankyou
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| 19:03 | how are you tonight alkisg ?
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| 19:04 | <alkisg> Very fine, just came back from the Saturday evening exit...
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| 19:05 | <AndyGraybeal> i don't understand what that is.
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