IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 1 August 2019 (all times are UTC)
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| 12:24 | <Zentibel> Hello all, I have a problem with my ltsp system at work.
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| 12:25 | And shift+enter does not make a new line apparanty
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| 12:26 | So I have a debian server running LTSP, but after accidentially deleting the /var/lib/tftpboot directory, and copying over the files from /opt/ltsp/amd64/boot, I get a "/var/lib/tftpboot/pxelinux.0 file not found" error
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| 12:26 | I have verified that the file exists
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| 12:27 | And that it is readable
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| 12:27 | So I am not sure why it wont work
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| 12:27 | Also I am not at work atm so I will not be able to try anything until later
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| 12:28 | <alkisg> Zentibel: copy files? Why not just run ltsp-update-kernels?
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| 12:29 | <Zentibel> I didn't know what to do and just saw that someone else sorted it like that
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| 12:29 | <alkisg> Also, it's usually /var/lib/tftpboot/ltsp/i386/pxelinux.0, not in the root of tftp
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| 12:29 | <Zentibel> Yeah I just typed it wrong, sorry
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| 12:29 | <alkisg> OK; also note that it might be serving from /srv/tftp instead
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| 12:29 | <Zentibel> Before when I had a chrootless image doing ltsp-update-image didn't update /var/lib/tftpboot
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| 12:30 | I checked /srv/ and its empty
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| 12:30 | <alkisg> ltsp-update-image calls ltsp-update-kernels which updates /var/lib/tftpboot, so you're probably wrong about chrootless
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| 12:31 | <Zentibel> Alright
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| 12:32 | The main issue is why it won't find that file even though it exists
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| 12:32 | <alkisg> You probably put it in the wrong path
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| 12:33 | Are you using dnsmasq or tftpd-hpa?
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| 12:33 | <Zentibel> dnsmasq
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| 12:33 | <alkisg> tail -f /var/log/syslog while the client tries to boot, will tell you where it's searching
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| 12:33 | <Zentibel> Alright cool
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| 12:35 | <Zentibel> The thing however is that the thin client says that the file isn't found, where there is a file on the server
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| 12:35 | <alkisg> OK, when you get there if you can't solve it come again
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| 12:35 | It's either wrong paths or wrong permissions or wrong server
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| 12:36 | In any case, there's not much more to say when you can't test
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| 12:36 | <Zentibel> Ok thanks anyway!
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| 13:15 | <markit> "Mattermost is a modern open-source solution for team communication, eliminating many of the limits of IRC"
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| 13:15 | ops, sorry, wrong channel!
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| 13:15 | hi alkisg :)
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| 13:17 | * mwalters puts on his grumpy old man hat | |
| 13:17 | <mwalters> I like the limits of IRC.
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| 13:17 | get off my lawn, slack.
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| 13:18 | <markit> mwalters: yes, but I'm also in a different channel and we were wondering why is years we are almost the same 5-7 people, even if is LibreOffice related, so wondered if new people is elsewhere :)
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| 13:19 | <mwalters> Yeah, I've had regional "tech" channel run into the same issues. Once they went to slack, membership/participation skyrocketed
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| 13:19 | I'm just grumpy and old ;)
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| 13:20 | ...and prefer my weechat.
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| 14:11 | <alkisg> Hey markit
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| 14:15 | <alkisg> vagrantc: in ltsp-update-image.excludes, I replaced /etc/.git , .hg, .bzr and some others that you had, with /etc/.(!java), i.e. all dot directories in /etc/ are excluded except for java. What was /etc/_darcs, I haven't found any reference of it online...
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| 14:16 | <vagrantc> i suspect those were the ones supported by etckeeper at the time ... or at least the ones i knew about
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| 14:17 | since it could store sensitive data...
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| 14:17 | <alkisg> I think /etc/_darcs isn't used though, I don't see any references of it online, so I'll remove it until someone needs it
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| 14:18 | Btw, has anyone used "multistrap"? Is it worth it in any cases to point our users there, instead of debbootstrap?
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| 14:19 | <vagrantc> default for etckeeper is git ... the others were just being thorough
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| 14:24 | <alkisg> Commands that are pretty much ready: ltsp, ltsp-dnsmasq, ltsp-initrd, ltsp-ipxe, ltsp-kernel , ltsp-nfs
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| 14:24 | Commands that will be ready next week: ltsp-client.conf, ltsp-image, ltsp-info
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| 14:24 | Commands that I'm thinking to postpone after the beta or until someone asks for them: ltsp-chroot, ltsp-isc-dhcp, ltsp-nbd, ltsp-swap
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| 14:25 | Does anyone think that any of those last commands are required for beta?
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| 14:26 | <alkisg> I've heard reports about nbd swap being rather unstable, and a bad client may severely affect the server with it, so I was thinking to omit it until someone needs it...
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| 14:26 | <BuddyButterfly> hi
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| 14:26 | <alkisg> Hi BuddyButterfly
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| 14:26 | <BuddyButterfly> alkisg: did the upgrade to 18.04 as you described.
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| 14:26 | worked so far flawlessly.
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| 14:27 | <alkisg> Great
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| 14:27 | <BuddyButterfly> only issue is that i do not have any dns resolution on the clients.
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| 14:27 | I do have the dns_server settings, etc. in the lts.conf.
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| 14:27 | is there from the previous version...
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| 14:28 | <alkisg> What's the output of `ls -l /etc/resolv.conf; cat /etc/resolv.conf` on the clients?
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| 14:28 | <BuddyButterfly> Now the question. Do you have a clue, what could be the issue?
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| 14:28 | alkisg: that is a link to the systemd version.
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| 14:28 | <alkisg> Is it broken?
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| 14:28 | <BuddyButterfly> the content is that the server points to localhost: 127.0.0.1:53
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| 14:29 | in the resolve.conf
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| 14:29 | <alkisg> Single nic or dual nic?
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| 14:29 | <BuddyButterfly> single nic!
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| 14:29 | <alkisg> (the server)
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| 14:29 | <BuddyButterfly> ah, moment.
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| 14:29 | <alkisg> Also: grep -r DNS /run/ltsp
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| 14:30 | Output of that, too
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| 14:30 | <BuddyButterfly> server: single nic.
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| 14:30 | on server?
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| 14:30 | <alkisg> Client
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| 14:30 | <BuddyButterfly> on client: grep -r DNS /run/ltsp?
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| 14:30 | <alkisg> Yes
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| 14:30 | <BuddyButterfly> ok, will try. have to first stop xenial verison of ltsp and start bionic....
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| 14:34 | client is booting...
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| 14:37 | /run/ltsp/passwd:avahi:x:107:114:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
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| 14:37 | /run/ltsp/ltsp_config_env:DNS_SERVER="192.168.1.1"
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| 14:38 | dns server is 192.168.1.1, which is correct.
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| 14:38 | <alkisg> OK, then: getent hosts www.google.com
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| 14:39 | And: ping 8.8.8.8
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| 14:39 | And: ping www.google.com
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| 14:39 | from the client
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| 14:39 | <BuddyButterfly> ah, that can be done easier.
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| 14:39 | ping 1.1
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| 14:39 | which works!
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| 14:40 | getent?
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| 14:40 | not available on client.
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| 14:40 | ah, sry, getent hosts... gives empty result.
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| 14:41 | <alkisg> So which of those 3 commands work and which don't?
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| 14:41 | <BuddyButterfly> ping 1.1:
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| 14:41 | 64 bytes from 1.0.0.1: icmp_seq=1 ttl=58 time=16.9 ms
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| 14:41 | getent:
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| 14:41 | empty
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| 14:41 | nothing...
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| 14:41 | <alkisg> ping www.google.com ?
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| 14:41 | <BuddyButterfly> alkisg: hehe, that will not work, as it requires dns resolution ;-)
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| 14:41 | <alkisg> Sure, I wanted to see the message
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| 14:42 | <BuddyButterfly> temporary error with name resolution...
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| 14:42 | it is German:
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| 14:42 | ping: www.google.com: Temporärer Fehler bei der Namensauflösung
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| 14:42 | <alkisg> systemd-resolve --status => DNS server there?
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| 14:43 | And, dpkg -l resolvconf
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| 14:43 | (should be uninstalled)
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| 14:44 | Also: host 192.168.1.1 www.google.com
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| 14:44 | (should work)
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| 14:44 | <BuddyButterfly> host 192.168.1.1 www.google.com:
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| 14:45 | host: couldn't get address for 'www.google.com': failure
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| 14:45 | <alkisg> That means your 192.168.1.1 dns server is not working
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| 14:45 | Try it from your server now
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| 14:45 | <BuddyButterfly> a dig @192.168.1.1 gives it back
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| 14:45 | <alkisg> Ah maybe it's the opposite, let me see
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| 14:45 | <BuddyButterfly> ;; ANSWER SECTION:
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| 14:45 | www.google.com. 262 IN A 172.217.22.68
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| 14:46 | but that host 192.168.1.1 does not work.
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| 14:46 | <alkisg> Yeah it's: host www.google.com 192.168.1.1
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| 14:46 | <BuddyButterfly> yep, works.
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| 14:46 | <alkisg> What about the other 2?
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| 14:47 | (05:42:31 PM) alkisg: systemd-resolve --status => DNS server there?
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| 14:47 | (05:43:18 PM) alkisg: And, dpkg -l resolvconf
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| 14:47 | <BuddyButterfly> moment...
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| 14:47 | ii resolvconf 1.79ubuntu10.1 all name server information handler
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| 14:47 | <alkisg> OK, this is probably what breaks it
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| 14:48 | Remove it from the chroot or the server if you're using chrootless, and update image
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| 14:48 | <BuddyButterfly> okey...?
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| 14:48 | ok, will do....
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| 14:48 | hang on... ;-)
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| 14:48 | <alkisg> Ubuntu dropped resolvconf after 16.04 or maybe even earlier
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| 14:48 | They change the DNS stuff on every release :D
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| 14:49 | <BuddyButterfly> yes, true! I have already started to move some systems to debian....
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| 14:49 | away from ubuntu...
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| 14:50 | <alkisg> Now with the new ltsp19 it'll be very very easy to test all .deb based distributions
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| 14:50 | And desktop environments
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| 14:50 | I'll try to support most of them, so that people can easily switch between them
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| 14:50 | I'll probably switch a couple of schools to buster + ltsp19 in september too
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| 14:51 | <BuddyButterfly> alkisg: yes, wise decision. have also moved some systems to buster.
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| 14:51 | debian is not that erratic in its changes and more stable in recent times.
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| 14:51 | <alkisg> I'm sure it'll require a few months of fine-tuning, but it might be worth it
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| 14:55 | <BuddyButterfly> alkisg: so, image is being created. removed resolvconf from server.
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| 14:55 | <alkisg> Are you using chrootless ltsp?
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| 14:55 | <BuddyButterfly> needs some time ;-)
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| 14:55 | yes, pnp...
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| 14:56 | <alkisg> OK; does dns work on the server after it was removed?
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| 14:56 | Maybe you need to do a couple of manual steps...
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| 14:56 | <BuddyButterfly> yes, checked, that ;-)
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| 14:56 | <alkisg> Maybe it'll break after reboot :P
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| 14:56 | <BuddyButterfly> also rebooted ;-)
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| 14:57 | it gives explicit notice that reboot is required.
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| 14:57 | after deinstallation.
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| 15:00 | alkisg: it is nice to have the ltsp server running in a vm. so I am very comfortable with testing.... can alway revert back to old vm. Just cloned old one and made the upgrade... worked flawlessly.
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| 15:00 | then I also have 2 vm clients to the ltsp server where I can do real quick tests...
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| 15:02 | <alkisg> BuddyButterfly: the opposite is also nice, to have the "template client" in a vm itself, so that you can test without even running ltsp-update-image... https://ltsp.github.io/docs/ltsp-image/#VM-IMAGES
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| 15:02 | (that's from the new ltsp19)
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| 15:03 | E.g. I have 20 VMs and 20 live cds, and I can ltsp-boot any one of them
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| 15:03 | And I'm not even using -pnp
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| 15:05 | <BuddyButterfly> oh my good
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| 15:05 | that is so cool!
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| 15:05 | wow, I will definitely look into this also, as I have also a few vms that could be used as templates.
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| 15:06 | <alkisg> It'll be ready for testing in a couple of weeks
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| 15:06 | It's also doable in ltsp5, but I don't have any documentation for it
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| 15:06 | <BuddyButterfly> where do I see the exact version I am using?
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| 15:07 | image finished...
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| 15:07 | <alkisg> Everyone is using ltsp5; while I'm currently developing ltsp19 and it'll be ready for beta testing in 2 weeks
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| 15:07 | <BuddyButterfly> thumbs up...
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| 15:09 | Chacka!!!! That cooked it!
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| 15:09 | will you vm templating also support qcow2 sparse images?
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| 15:09 | which is the default I am using.
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| 15:10 | cause I am running on kvm (proxmox server).
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| 15:10 | <alkisg> No
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| 15:10 | initramfs can't boot qcow2
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| 15:10 | So it needs to be fixed size image
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| 15:11 | <BuddyButterfly> ok, can be easily converted for that templates.
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| 15:11 | <alkisg> I'm sure all virtualization applications support fixed size, right?
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| 15:11 | * markit hopes alkisg with ltsp19 will support Kubuntu too... | |
| 15:11 | <BuddyButterfly> yep
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| 15:11 | <alkisg> markit: I've booted kubuntu 18.04 with ltsp19, I didn't notice any big delays
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| 15:12 | <BuddyButterfly> alkisg: thanks again for you perfect and precise help!
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| 15:12 | unbeatable...
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| 15:12 | <alkisg> np
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| 15:12 | <BuddyButterfly> there is one thing left, where I probably would need advice.
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| 15:13 | but I will test first.... (it is mounting cifs via fstab, which does not work as expected). But I would like to have more data on what exactly happens).
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| 15:14 | especially I would like to test this in the version (bionic)...
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| 15:22 | <alkisg> !install | markit:
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| 15:22 | <ltsp> Error: "markit:" is not a valid command.
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| 15:22 | <alkisg> !install | echo markit:
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| 15:22 | <ltsp> markit: install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
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| 15:23 | <archundial> Hi, i installed my ltsp server, congratullations, now its so easy but a thin client, but i cant admin my users, how can i do it? Sorry for my easy question
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| 15:24 | boot* a thin client
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| 15:24 | <alkisg> What does "admin my users" mean?
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| 15:24 | Why are you using thin clients instead of fat?
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| 15:24 | !fatclients
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| 15:24 | <ltsp> fatclients: Nowadays LTSP supports thin and fat clients. They are both diskless and netbooted from the same LTSP chroot, but while thin clients run the session on the server and transfer the screen, fat clients run the session locally with their own CPU/RAM, thus performing amazingly better. See also !ltsp-pnp and https://help.ubuntu.com/community/UbuntuLTSP/FatClients
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| 15:24 | <archundial> fat
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| 15:25 | <alkisg> Do you mean that you cannot run "sudo" on fat clients?
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| 15:25 | <archundial> but i cant log in my clients
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| 15:25 | <alkisg> Your fat clients boot, but you can't login to them?
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| 15:25 | <archundial> yes
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| 15:25 | <alkisg> Do you have epoptes installed?
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| 15:25 | !epoptes
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| 15:25 | <ltsp> epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
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| 15:25 | <archundial> ye
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| 15:25 | yes
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| 15:25 | <alkisg> I can take a quick look over vnc, if you want
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| 15:25 | !vnc-edide
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| 15:25 | <ltsp> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 15:26 | <alkisg> From the server
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| 15:26 | <archundial> i saw my computers turnned on
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| 15:33 | <alkisg> archundial: it seems like a problem with gnome and 19.04
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| 15:34 | Better use mate and 18.04 instead
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| 15:34 | !install
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| 15:34 | <ltsp> install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
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| 15:34 | <alkisg> I.e. this one ^
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| 15:42 | <archundial> Its done, then?
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| 15:45 | i need to reinstall all, right?
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| 15:49 | i'll do it, i'm so thankfully
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| 17:27 | <markit> alkisg: I've installed in pnp (chrootless) mode, but I've god a mate/gnome interface, did not keept the KDE "host" one, any parameter I'm missing?
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| 17:34 | <markit> ops, my foult, I just copy/pasted the commands "ltsp-chroot -m apt install ubuntu-mate-desktop"
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| 17:34 | I thought that with pnp always the SAME desktop would have been installed, and I did not noticed that command, sigh
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| 17:38 | mm what a mess, I've mixed pnp and not pnp installation, too distraction (phone, clients, family...)
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| 17:46 | <markit> mmmm "apt install --yes --install-recommends ltsp-server-standalone ltsp-client epoptes" installs "mate" desktop, how can I avoit id?
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| 17:47 | brb
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