IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 28 August 2019 (all times are UTC)
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| 02:28 | <mmarconm> alkisg: the ltsp client boots on img file ?
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| 02:28 | can i save this file like a bkp ?
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| 03:40 | <alkisg> mmarconm: yes
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| 04:07 | <mmarconm> alkisg: i just finished to configure and integrate samba4 + ldap with Lubuntu 18.04 ltsp server
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| 04:07 | till now works perfect
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| 04:07 | <alkisg> Great
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| 08:18 | <alkisg> Anyone using isc-dhcp, to test a new dhcpd.conf?
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| 08:19 | <uumas> On ltsp19 or in general?
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| 08:20 | <alkisg> It can be adapter in general
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| 08:20 | To see if it properly supports bios, uefi and ipxe clients
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| 08:20 | https://termbin.com/15pf
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| 08:21 | For syslinux, you'd just replace undionly.kpxe with pxelinux.0, and snponly.efi with syslinux.efi
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| 08:24 | Also, if something else is needed in that minimal/default template, tell me to add it...
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| 08:24 | * alkisg is implementing `ltsp isc-dhcp`, to automatically configure isc-dhcp | |
| 08:28 | <uumas> alkisg: So is that a config for dual nic setup?
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| 08:29 | <alkisg> uumas, yes; or, to be adapted if someone has a single nic with isc-dhcp
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| 08:34 | <Hyperbyte> alkisg, I use isc-dhcp
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| 08:34 | <alkisg> Hyperbyte: nice, could you have a look at the termbin above?
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| 08:34 | <Hyperbyte> I'm not on location currently though to test
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| 08:34 | * Hyperbyte looks | |
| 08:34 | <alkisg> It's supposed to work with ipxe, bios, uefi
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| 08:35 | If something more is needed for a "generic default template", tell me to add it
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| 08:37 | <Hyperbyte> This is a bit beyond me... haven't heard of ipxe before and I don't do much with uefi
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| 08:37 | <alkisg> Anything you'd need in there, from your existing dhcpd.conf?
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| 08:37 | I avoided the common ones like lease time etc to keep it simple
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| 08:38 | <uumas> alkisg: It seems isc-dhcp doesn't support proxydhcp, so there isn't really a reason to use it other than dual nic, or am I missing something?
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| 08:38 | <alkisg> uumas, there isn't even a reason to use it in dual nic, as our default dnsmasq setup works fine there too
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| 08:38 | But people use it, so... what can I say
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| 08:39 | * alkisg wonders if he should just provide a template file, not an `ltsp isc-dhcp` command | |
| 08:39 | <uumas> Well, I use it on a separate networking server and don't do any dhcp handling on the ltsp server.
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| 08:40 | <alkisg> Right, one more reason to just provide a template file and not code
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| 08:40 | OK, doing so...
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| 08:40 | <Hyperbyte> alkisg, I think if people can make a concious decision to use isc-dhcp-server, they can write a config file.
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| 08:40 | <alkisg> Hyperbyte: not like that one
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| 08:40 | We need to at least give them that template
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| 08:40 | <Hyperbyte> Maybe not
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| 08:40 | Yeah sure, I mean with help of documentation of course.
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| 08:40 | <alkisg> OK, I'll put it to the wiki then
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| 08:40 | <Hyperbyte> One thing I can tell you
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| 08:41 | You have some options inside the LTSP subnet and some options global
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| 08:41 | <alkisg> Yup?
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| 08:41 | * alkisg doesn't have experience with isc-dhcp... | |
| 08:41 | <Hyperbyte> I'd put them all inside the LTSP subnet. And you have one double as well ipxe.no-pxedhcp
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| 08:42 | <Hyperbyte> Well basically for configuration options, you can specify them globally or per subnet inside the { }
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| 08:42 | <alkisg> Hyperbyte: one is the declaration,the other the assignment though, right?
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| 08:42 | <Hyperbyte> No
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| 08:42 | <alkisg> option ipxe.no-pxedhcp code 176 = unsigned integer 8;
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| 08:42 | option ipxe.no-pxedhcp 1;
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| 08:42 | I imagine that the first one is like declaring "int x"
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| 08:42 | <Hyperbyte> Hmmm
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| 08:42 | <alkisg> And the second: x=1
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| 08:42 | <Hyperbyte> I haven't seen that syntax before actually
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| 08:42 | <Hyperbyte> the 'code 176' bit
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| 08:42 | <alkisg> It's to declare unknown options
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| 08:43 | <Hyperbyte> Ah
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| 08:43 | Oh well that makes sense.
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| 08:43 | <alkisg> OK, so, do I need to change something then?
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| 08:43 | I declare globally, modify locally
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| 08:43 | <Hyperbyte> Well you could move the domain-name-servers to the subnet block, that seems logical
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| 08:43 | But it doesn't matter much realy.
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| 08:44 | You could also move the option routers outside the subnet block, with only one subnet, it matters not.
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| 08:44 | <alkisg> Ah they're per-subnet usually? I was thinking they'd be global
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| 08:44 | <Hyperbyte> Well you can decide that. :-D
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| 08:44 | <alkisg> I was thinking that usually, routers are per subnet, and dns global
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| 08:44 | <Hyperbyte> Yeah, that makes sense probably.
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| 08:45 | <alkisg> OK good to go then; I'm putting this to the wiki and closing the bug report
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| 08:45 | <Hyperbyte> Oh, you could add an option ntp-servers.
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| 08:45 | <alkisg> Otherwise the distro defaults would be used, right? Which is better?
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| 08:46 | We wouldn't want ntp.ubuntu.com in fedora, I think...
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| 08:46 | <Hyperbyte> Isn't LTSP server automatically set up as ntp server?
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| 08:46 | I thought it was...
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| 08:47 | <alkisg> It's like any desktop pc
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| 08:47 | Are they? I don't think so
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| 08:47 | <Hyperbyte> No looks like they aren't
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| 08:47 | * Hyperbyte sets up ntp :-D | |
| 08:47 | <alkisg> Haha
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| 08:49 | <uumas> My isc-dhcp config for ltsp5 is way different: https://pastebin.com/HQAhZEJf
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| 08:49 | I really have no clue about the ipxe options
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| 08:50 | <alkisg> OK you should be able to quickly replace it with the new one; except that in this case, I need to document that router != next-server
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| 08:50 | <uumas> What do the ipxe options do exactly
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| 08:51 | <alkisg> They're not all ipxe options; they instruct the clients which file they should get, based on their architecture
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| 08:51 | So bios clients get undionly.kpxe and uefi get snponly.efi
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| 08:51 | For syslinux, it would be pxelinux.0 and syslinux.efi
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| 08:52 | uumas, if you have any uefi-capable clients, you could test uefi booting...
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| 08:52 | <uumas> Well, I don't have uefi clients, but I can probably test using my laptop.
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| 08:53 | <alkisg> uumas, before you change anything, could you test this on any client or the server?
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| 08:53 | <uumas> So, do I need to change my current config to make uefi clients work?
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| 08:53 | <alkisg> sudo /usr/lib/klibc/bin/ipconfig -n enp3s0
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| 08:53 | This fakes a dhcp request; put the correct NIC there;
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| 08:53 | so what I want to see, is how long it takes for the server to reply,
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| 08:54 | as isc-dhcp here takes 10 seconds, while dnsmasq takes 1
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| 08:54 | Yes to make uefi clients work you'd need the new template
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| 08:56 | <uumas> <alkisg "sudo /usr/lib/klibc/bin/ipconfig"> Took about 1 second
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| 08:56 | <alkisg> Hrm
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| 08:56 | OK something is wrong here, maybe due to the other nic
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| 08:56 | <uumas> Now taking like 0,2s or something, basically instant.
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| 08:57 | <alkisg> Yes that's like dnsmasq too
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| 09:05 | !isc
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| 09:05 | <ltsp> I do not know about 'isc', but I do know about these similar topics: 'ltsp-discuss'
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| 09:06 | <alkisg> !learn isc-dhcp-server as Only dnsmasq supports proxyDHCP, so it's recommended; for isc-dhcp-server, read: https://github.com/ltsp/ltsp/wiki/isc-dhcp-server
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| 09:06 | <ltsp> The operation succeeded.
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| 09:13 | <Hyperbyte> If you want to speed up isc-dhcp-server you can disable ping-check in the config. Could be problematic on some networks though.
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| 09:15 | <alkisg> Hyperbyte: uumas also didn't disable it, and it needs 1 sec there, 10 secs here... I wonder why
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| 09:15 | Maybe it doesn't like my direct client connection, instead of using a switch
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| 09:30 | !learn msdhcp as If you don't want to use dnsmasq in proxyDHCP mode, see this to configure msdhcp: https://ipxe.org/howto/msdhcp
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| 09:30 | <ltsp> The operation succeeded.
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| 14:07 | * mmarconm morning | |
| 14:18 | <mmarconm> using ltsp with ldap, i can login on ltsp server, but on ltsp clients i dont
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| 14:18 | give a error and i redirected to login again
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| 14:22 | <mwalters> mmarconm: are you using ltsp5 or 19?
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| 14:22 | <mmarconm> 5
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| 14:22 | 19 i will test tonight
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| 14:23 | <mwalters> 19 still has some "to be completed" stuff for ldap, I think... they were working on it the past few days. Are you able to log in as the ldap user via ssh on the server?
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| 14:23 | <mmarconm> samba4 + ldap running on debian 10 amd64, ltsp server running on lubuntu 18.04 amd64
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| 14:23 | <vagrantc> mmarconm: can you ssh into the ltsp server?
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| 14:23 | <mmarconm> vagrantc: from the ltsp server ?
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| 14:23 | <vagrantc> from anywhere
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| 14:23 | <mwalters> from any other box to the ltsp server
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| 14:23 | <mmarconm> vagrantc: i am running on vmware, just for test purpose
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| 14:24 | wait a second ...
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| 14:24 | <mwalters> are you able to log in locally as an ldap user on the server?
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| 14:24 | <vagrantc> if you can't ssh to the server, then LDM won't work, so test that.
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| 14:24 | <mwalters> ...yes, you said you could do that
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| 14:24 | if you're using kerberos, try kinit after logging in
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| 14:24 | <mmarconm> from the ltsp server ,yes i can login from ssh and normal login using xorg
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| 14:24 | from the ltsp server working fine
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| 14:26 | <mwalters> first thing to test would be ssh from another machine to the server
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| 14:26 | (A liveCD booted on the same vmnet would probably be fine)
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| 15:18 | <mmarconm> Done...
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| 15:19 | fixed, now i can log in using ltsp client too, and configured a template user account configured with some applications, wallpapers, everytime that the user account its created, uses this user template
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| 16:10 | <uumas> alkisg: Tried installing ltsp19 now. Got stuck with this when generating the initial image: https://pastebin.com/qBrW1zYz
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| 16:38 | <mmarconm> uumas: how i install ltsp19 ?
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| 16:38 | ppa, ./install ?
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| 16:38 | <uumas> https://github.com/ltsp/ltsp/wiki/installation
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| 16:39 | <mmarconm> uumas: wich ubuntu do u recommend ? Ubuntu Mate, Lubuntu, Xubuntu
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| 16:40 | <uumas> I'm using mate and AFAIK that's what alkisg recommends too.
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| 16:41 | <mmarconm> Ahhh, i like to use lubuntu, but i will try Mate now
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| 16:41 | <uumas> Lubuntu is a bit lighter, but honestly the difference isn't huge. Mate is more (easily) customizable.
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| 16:42 | <mmarconm> Mate on vmware is not working properly
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| 16:43 | <uumas> Oh? That's interesting.
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| 16:43 | <mmarconm> some issues with the video
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| 16:44 | <uumas> That shouldn't affect the clients though
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| 16:44 | <mmarconm> ahhhh, fixed, just disable video card rendering
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| 17:29 | * alkisg_android waves | |
| 17:29 | <alkisg_android> uumas, output of cat /proc/mounts ?
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| 17:31 | <uumas> alkisg_android: https://termbin.com/6i2j
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| 17:32 | <alkisg_android> btw ltsp19 doesn't support thin clients so doesn't care much about the desktop environment
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| 17:37 | <alkisg_android> strange, I don't know why mount would complain. Did ltsp5 work with vda?
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| 17:43 | <uumas> Yes, it does. I'm doing quite a minimal install so I don't know if it could be that mount requires some additional package that is usually installed.
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| 17:44 | <alkisg_android> which kernel and ubuntu or debian version is that?
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| 17:44 | also check dmesg
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| 17:47 | <uumas> Oh, I feel stupid. It's Ubuntu 19.10, which must be the reason for the problem (linux 5.2). I'll try using an older version.
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| 17:48 | <alkisg_android> i tried 19.10 as a client and i had to work around two new ubuntu bugs
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| 17:49 | i haven't tried it as a server
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| 17:49 | do check dmesg
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| 17:50 | <uumas> 'overlayfs: overlapping upperdir path' in dmesg seems like it could be relevant
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| 17:51 | <alkisg_android> this was accepted previously
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| 17:51 | and it hide the lower path
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| 17:51 | <uumas> Hm?
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| 17:51 | <alkisg_android> ok try with an older kernel, i'll fix this next week
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| 17:54 | <uumas> No older kernel available in the repo, so I'll just try using bionic for now.
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| 17:55 | <alkisg_android> ok; or install one from the mainline ppa; but bionic is more stable
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| 17:57 | <uumas> Don't care about stability for now, but I just can't bother messing with kernel debs right now. I'll probably start using ltsp19 in production when ubuntu 20.04 is released.
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| 17:59 | <alkisg_android> sounds good
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