IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 14 February 2017 (all times are UTC)
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| 03:48 | <Gpteach> How do I make the clients default boot fallback not unity? LTSP installed on ubu14server with edubuntu client images.
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| 10:09 | <BuddyButterfly> hi
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| 10:09 | <alkisg> Hello
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| 10:09 | <BuddyButterfly> alkisg: tnx so far for help. ltsp-pnp runs perfect. though, I do have some issues with booting the clients from time to time.
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| 10:10 | I guess this is because I am running ltsp-pnp from within an xen vm.
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| 10:10 | <alkisg> Nope, that shouldn't matter
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| 10:11 | Just mention the exact message that you see
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| 10:11 | <BuddyButterfly> therefore I would like to migrate the pxe to my central dhcp server. What do I have to note on specialities? Is all I have to do to remove the dnsmasq from ltsp server?
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| 10:12 | I guess sometimes this vm has issues not getting an IP. Also, sometimes, it gets an IP, can be accessed but the clients can not start. only after vm-reboot it works then.
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| 10:12 | <alkisg> !nbd
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| 10:12 | <ltsp> I do not know about 'nbd', but I do know about these similar topics: 'disable-nbd-proxy', 'nbd-proxy', 'nbd-compression', 'quick-nbd-tests', 'nbd-client', 'nbd-server-bug', 'nbd-trusty-bug'
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| 10:12 | <alkisg> !nbd-trusty-bug
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| 10:12 | <ltsp> nbd-trusty-bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1330671
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| 10:13 | <BuddyButterfly> because of this unstable behaviour I want to try to move the pxe part to dhcp server....
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| 10:13 | <alkisg> Nope
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| 10:13 | !nbd-server-bug
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| 10:13 | <ltsp> nbd-server-bug: nbd-server hanging bug: https://github.com/yoe/nbd/commit/741495cb08503fd32a9d22648e63b64390c601f4, solved in version 3.4-1
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| 10:13 | <alkisg> Nah not that one either
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| 10:14 | !learn nbd-client-breaks-nm as run this command to bypass an issue in 16.04: sudo dpkg-divert --divert /etc/nbd-client.init --rename /etc/init.d/nbd-client
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| 10:14 | <ltsp> The operation succeeded.
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| 10:14 | <alkisg> BuddyButterfly: that ^ one
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| 10:14 | It's not related to using a VM, it's just an nbd-client bug
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| 10:15 | <BuddyButterfly> alkisg: oh, really? so much information now ;-) ok, will have a look into it.
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| 10:24 | alkisg: will be short afk, fon.....
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| 11:12 | alkisg: ok, executed that command. and indeed, I do have 16.04 (Xubuntu).
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| 11:12 | so this means that nbd client breaks network manager and gives troubles with the network interface?
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| 11:13 | <alkisg> yup
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| 12:07 | <BuddyButterfly> alkisg: am I able to recreate image while clients are running?
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| 13:00 | <alkisg> BuddyButterfly: yup
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| 13:27 | <BuddyButterfly> alkisg: ah, perfect, will do now....
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| 14:11 | <BuddyButterfly> alkisg: yep, worked! Great. Will let you know if the patch worked out in the next days.
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| 14:13 | alkisg: btw. longterm I would like to manage the pxe boot menu etc. on my central dhcp also for other systems. What would be the rough steps? I am using isc-dhcp as dhcp-server. Is it enought to remove dnsmasq?
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| 14:13 | <alkisg> BuddyButterfly: dnsmasq is also used for tftp, so don't remove it
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| 14:13 | You can disable its proxydhcp services by just removing the dhcp-range= lines
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| 15:28 | <BuddyButterfly> alkisg: ah, very good, these are exactly the hints that I needed. but I am running hpa-tftp.....
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| 15:28 | or the like, let me have a look
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| 15:29 | alkisg: sry, it is vice versa: tftp-hpa ;-)
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| 15:29 | so I do not think that dnsmasq provides tftp, does it?
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| 15:30 | at least, if my tftp does not run, then nothing works ;-)
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| 15:32 | alkisg: ok, I see, there is a tftp-root in dnsmasq conf.
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| 15:37 | alkisg: is it possible that I do have a misconfiguration here? tftp is enabled in dnsmasq (enable-tftp) but also tftp-hpa is configured in /etc/default/tftp-hpa to the same root and both enabled.
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| 16:31 | <alkisg> BuddyButterfly: if you followed the ltsp-pnp page, I'm not sure why you ended up with tftpd-hpa
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| 16:31 | !ltsp-pnp
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| 16:31 | <ltsp> ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 16:32 | <BuddyButterfly> alkisg: me neither ;-) maybe I have made a mistake somehow.
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| 16:33 | obviously both is activated on my side.
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| 16:33 | <alkisg> BuddyButterfly: if you have a race condition with 2 tftpd servers, it's an additional problem that adds to your server instability
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| 16:33 | Only one of them can be running
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| 16:33 | The first that will start
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| 16:33 | <BuddyButterfly> alkisg: aha, this makes sense.
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| 16:34 | I see dnsmasq running on local interface? -I lo
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| 16:34 | <alkisg> BuddyButterfly: well anyway, just follow the ltsp-pnp wiki page steps to have a proper installation
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| 16:36 | <BuddyButterfly> ok. I think I have to try to disable tftp-hpa. I am sure it was on some documetation like ltsppnp ubuntu wiki or the like
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| 16:37 | <alkisg> Remove it then, don't disable it
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| 16:37 | BuddyButterfly: do you have the dnsmasq package installed?
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| 16:37 | Or is it only dnsmasq-base?
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| 16:38 | <BuddyButterfly> will check...
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| 16:38 | <alkisg> dpkg -l '*dnsmasq*'|grep ^ii
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| 16:38 | <BuddyButterfly> both
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| 16:38 | <alkisg> ok, then yes remove tftpd-hpa
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| 16:39 | <BuddyButterfly> I guess I do have to set then bind-interfaces in ltsp-server-dnsmasq.conf also?
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| 16:39 | <alkisg> No, that makes dnsmasq unstable
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| 16:39 | <BuddyButterfly> I have 2 dnsmasq processes running. 1 under network manager and one stand alone.
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| 16:40 | <alkisg> Please follow the ltsp-pnp wiki page, I spent a lot of time to write all the steps there, so that I don't have to do it for each person separately :)
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| 16:40 | <BuddyButterfly> alkisg: ok, I will check to get it like this.
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| 16:40 | <alkisg> Nice :
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| 16:41 | <BuddyButterfly> can you privde the link again so that I get the correct one?
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| 16:41 | <alkisg> !ltsp-pnp
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| 16:41 | <ltsp> ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 16:45 | <BuddyButterfly> tnx. will check it and remove tftp-hpa.....
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| 16:47 | hihi, tnx to epoptes, I am able to control the clients now remotely.....
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| 16:47 | even 2 screen setup works.....
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| 16:50 | alkisg: tftp-hpa is a hog
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| 16:51 | it wants to remove also ltsp-client and client-core and also nbd-client, etc....
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| 16:51 | lots of ltsp stuff.
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| 16:51 | I do not feel comfortable with this.
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| 16:51 | lot of dependencies.
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| 16:57 | <BuddyButterfly> alkisg: it came in with ltsp-client-core which directly depends on tftp-hpa
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| 16:57 | if I remove tftp-hpa, ltsp-client-core gets also removed and this drags a whole lot more....
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| 16:57 | so it was not a fault of documentation but of package dependencies.
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| 16:58 | I guess then I have to try to disable it instead of removing...
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| 17:08 | <alkisg> BuddyButterfly: remove tftpd-hpa , not tftp-hpa
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| 17:08 | tftp-hpa is the client and is needed to fetch lts.conf
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| 17:08 | tftpd-hpa is the server which conflicts with dnsmasq
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| 17:09 | <BuddyButterfly> ahhhh
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| 17:09 | this little character d....
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| 17:11 | ok, cross fingers. tftpd removed.....
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| 17:13 | argh, now there is no process listening on :69 anymore.
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| 17:13 | will try to start the client...
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| 17:16 | alkisg: now it hangs on tftp. there is no tftp running anymore
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| 17:16 | I will check if I have all packages like in your wiki.... but the enable-tftp in dnsmasq obviously does not work.
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| 17:21 | <alkisg> BuddyButterfly: now try: sudo service dnsmasq restart
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| 17:21 | and see if it starts
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| 17:22 | If it doesn't, follow the rest of the wiki, because that would mean you only did part of it
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| 17:25 | <BuddyButterfly> ok, will try.
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| 17:25 | checked packages. they are ok.
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| 17:25 | yep, now it is started.
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| 17:34 | alkisg: I am sorry, but no luck!
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| 17:34 | I checked every part on the wiki
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| 17:35 | I also did the stuff with the dns server. but did not work also. I do not want the ltsp server to be dns server, so I guess I can leave that away.
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| 17:35 | alkisg: any other idea, why it does not do tftp from boot?
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| 18:43 | <alkisg> BuddyButterfly: do you mean that client boot fails now? What is the exact error message?
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| 18:43 | !tftp
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| 18:43 | <ltsp> tftp: Here's a page to help you troubleshoot TFTP problems in Ubuntu: https://help.ubuntu.com/community/UbuntuLTSP/Troubleshooting/TFTP
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| 18:44 | <alkisg> You can check from any client, if tftp is working or not
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