IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 22 June 2016 (all times are UTC)
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| 05:18 | <alkisg> (04:59:38 μμ) sebd_: alkisg: http://www.cpubenchmark.net/cpu.php?cpu=Intel+Atom+N2800+%40+1.86GHz => 625 ; this is what we have here (with 2 Go RAM) - should I use them as fat clients too ?
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| 05:18 | ==> yup, you should use them as fat clients
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| 05:19 | The threshold depends on a lot of stuff, and for new clients I usually propose CPU at least 1000, and recommented at least 2000, but compared to thin clients, even a fat client with score=500 or lower is better
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| 05:20 | (05:07:26 μμ) sebd: it might not make a big difference, they rarely play fullscreen videos
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| 05:20 | ==> even scrolling a window can produce hundreds of mbps of traffic
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| 05:20 | It's not only about videos
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| 06:11 | <sebd> ok
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| 06:47 | <sebd> I would like to enforce password renewal at login : when the password of a user is expired, a "change password" form should appear at session start and the user should be required to enter a new password to be able to access anything else. How should I implement that ?
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| 06:48 | <sebd> I looked into LDM, pam and XSession. Users have thin and fat LTSP clients with XFCE desktop env.
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| 06:48 | I found no "standard" solution yet
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| 07:07 | <alkisg> sebd: that will be possible in ltsp 6, which will be ditching ldm in favor of pam
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| 07:08 | Its development is not going fast though; maybe help or motivation is needed...
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| 07:08 | You could of course also script it into the existing ldm, in case ltsp 6 takes a very long time to arrive... :)
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| 07:21 | <sebd> alkisg: ok I can work on that part (pam as a replacement for ldm, sounds good)
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| 07:21 | <alkisg> sebd: do you have programming experience?
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| 07:22 | <sebd> yes alkisg
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| 07:22 | * sebd bzr branch lp:ltsp | |
| 07:22 | <alkisg> Most of the related code is in the ldm branch, not ltsp
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| 07:22 | <sebd> ok
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| 07:22 | <alkisg> sbalneav has already developed the pam modules that we want to use
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| 07:23 | So the next thing is to try to integrate those
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| 07:23 | I.e. you don't even need to look at the ldm code at all
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| 07:23 | <sebd> ok
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| 07:23 | <alkisg> https://code.launchpad.net/~sbalneav/+branches?field.category=REGISTERED&field.category-empty-marker=1&field.lifecycle=CURRENT&field.lifecycle-empty-marker=1&field.sort_by=most+recently+changed+first&field.sort_by-empty-marker=1
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| 07:24 | lp:~sbalneav/ltsp/libpam-sshauth is the main thing
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| 07:24 | Try to initiate a chat with sbalneav and vagrantc
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| 07:24 | <sebd> ok
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| 07:55 | <eu^1721610050> Hi guys,
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| 07:56 | when i'm launching epoptes, it crashes
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| 07:56 | i'm behind the epoptes server
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| 07:56 | <alkisg> distro/version/message?
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| 07:57 | <alkisg> (message, if you run it via the command line, or if you try to upload the crashdump...)
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| 07:57 | <eu^1721610050> debian 32bits jessie, lxde,
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| 07:57 | no message, i just want to lauch the GUI
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| 07:57 | it runs like 2 sec, and stop
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| 07:57 | <alkisg> Can you try running it from the command line? epoptes
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| 07:58 | Also, is it 0.5.8-1~bpo8+1 ? dpkg -l epoptes
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| 07:58 | <eu^1721610050> 0.5.7.1
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| 07:59 | the users of the computer are not allowed to do command line
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| 07:59 | only root can
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| 07:59 | <alkisg> Is the user part of the epoptes group?
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| 07:59 | <eu^1721610050> oh, wait, i'll try something
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| 08:00 | <alkisg> (err how were you able to disallow the users from running lxterminal?!)
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| 08:00 | <eu^1721610050> ok for command line
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| 08:01 | (ldap config)
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| 08:02 | <alkisg> I don't know how to disable alt+ctrl+t or navigating to lxterminal with an ldap config, it sounds strange to me...
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| 08:02 | OK run it from the command line and tell me the crash output
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| 08:02 | Also, the output of: id
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| 08:02 | ...so that we see if the user is part of the epoptes group
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| 08:03 | <eu^1721610050> an error occured while connecting : 13
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| 08:03 | yes, the user is part of epoptes group
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| 08:03 | <alkisg> That means that either the epoptes service isn't running, or the user isn't a member of the epoptes group
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| 08:03 | <eu^1721610050> i 've to copy by hand the message, be patient ^^
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| 08:04 | <alkisg> ps aux | grep epoptes ==> is something like this running?
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| 08:04 | /usr/bin/python /usr/bin/twistd --pidfile /var/run/epoptes.pid --logfile /var/log/epoptes.log epoptes
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| 08:06 | <eu^1721610050> root 1118 0.0 1.3 29660 24112 ? S 11:50 0:00 /usr/bin/python /usr/bin/twistd --pidfile /var/run/epoptes.pid --logfile /var/log/epoptes.log epoptes MYUSER 1408 99.2 0.2 5340 3656 ? R 11:51 14:28 socat openssl-connect:server:789,cafile=/etc/epoptes/server.crt,interval=60,forever EXEC:bash -c \"exec -a epoptes-client sh\" MYUSER 1828 0.0 0.1 4580 2068 pts/2 S+ 12:05 0:00 grep epoptes
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| 08:07 | the original error
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| 08:07 | <alkisg> eu^1721610050: do you mind if you share your screen with me? It makes troubleshooting 10 times faster...
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| 08:08 | <eu^1721610050> I can't âste it
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| 08:08 | <alkisg> !vnc-dide
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| 08:08 | <ltsp> vnc-dide: To share your screen with me, run this: sudo apt-get --yes install x11vnc; x11vnc -connect srv1-dide.ioa.sch.gr - this is a reverse connection, it doesn't need port forwarding etc.
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| 08:08 | <alkisg> (you already have x11vnc installed, due to epoptes)
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| 08:08 | <eu^1721610050> ok
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| 08:08 | <alkisg> So just this, from the terminal, as the user: x11vnc -connect srv1-dide.ioa.sch.gr
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| 08:09 | <eu^1721610050> 22/06/2016 12:08:35 reverse_connect: srv1-dide.ioa.sch.gr failed
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| 08:09 | <alkisg> Can you ping srv1-dide.ioa.sch.gr ?
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| 08:09 | <eu^1721610050> I'll configure my firewall (open every ports)
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| 08:12 | <alkisg> The user is not part of the epoptes group
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| 08:12 | <eu^1721610050> ?
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| 08:13 | <alkisg> You need to specify that to your pam, ldap, whatever you use, so that "id" says that he is
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| 08:13 | See the output of "id"
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| 08:14 | I don't know pam very well, but I imagine that you disabled the "unix" pam
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| 08:14 | You only have ldap, without unix
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| 08:15 | <eu^1721610050> Yep
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| 08:15 | <alkisg> So you either need to add the unix pam, or add an epoptes group to your ldap
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| 08:15 | <eu^1721610050> So, i need to activate unix
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| 08:15 | <alkisg> The result should be that "id" also says "epoptes"
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| 08:16 | <eu^1721610050> ok
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| 08:16 | i'll try that....
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| 08:16 | <alkisg> Newer epoptes versions have better messages, that old one doesn't have a good message
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| 08:16 | 0.5.10 tells you 'access denied, check if the user is part of the epoptes group' graphically as well as in the console
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| 08:16 | <eu^1721610050> It worked yesterday,
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| 08:17 | <alkisg> What changed since yesterday?
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| 08:17 | <eu^1721610050> nothing, i've just turned off the computer
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| 08:18 | <alkisg> Maybe you changed something 3 days ago or longer, and it took effect on reboot
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| 08:18 | It's a socket permissions issue, it's not really related to the epoptes code
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| 08:18 | <eu^1721610050> ok
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| 08:18 | thanks for your help
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| 08:19 | <alkisg> You're welcome
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| 14:49 | <sebd> I would like to test the current LTSP development code on my own laptop. I cannot do that on real physical PCs because I just do not have them always with me and I move from one network to the other everyday.
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| 14:50 | What virtualisation system should I use to run latest unstable LTSP ?
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| 14:50 | <quinox> I managed to boot a virtual client from our real server using QEMU + a NIC firmware
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| 14:51 | I have yet to boot my virtual client from a dockered server instance - should be possible, but haven't tried it yet
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| 14:52 | <||cw> I've used kvm for server and client, but vbox and vmplayer should also work fine
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| 14:52 | <sebd> Docker for the server and qemu for the client, is it how the LTSP developers do as well ?
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| 14:53 | <||cw> if you only want VM clients, a vm NAT network is fine, but if you want physical clients too, that gets more tricky if you change networks
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| 14:54 | sebd: the VM tech doesn't really matter, linux and PXE is supported well enough on all of them
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| 14:55 | <sebd> I do not need to serve real physical clients for now
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| 14:55 | <||cw> oh, if you do a NAT, disables the built in DHCP server on it
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| 14:57 | <sebd> qemu, docker, kvm, vbox, vmplayer ... which one is the simplest ? I'll have to investigate (I don't know any)
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| 14:58 | <quinox> I don't think docker is particularly easy
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| 14:59 | <sebd> is vmplayer VMWare Player ? I will not use it as it is not free software (as in freedom). One eliminated.
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| 15:01 | <root> adfgasdfhz
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| 15:01 | adfbgsdgh#ä
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| 15:01 | qwertz
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| 15:02 | <||cw> o_O
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| 15:05 | <sebd> I guess vbox means VirtualBox. Does not seem totally free either but it is in debian, which is easier for me.
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| 15:09 | <||cw> my kvm was via proxmox, but that's a dedicated system for production. you should be able to do it with virt-manager if you want a desktop GUI
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| 15:10 | I use that for my windows VM
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| 15:10 | vbox is easier
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| 15:11 | <sebd> Debian package qemu-system-x86 description looks good for a client PC emulation
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| 15:13 | oh I did not know virt-manager either.
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| 15:15 | virt-manager with kvm under it looks like a sane choice for me
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| 15:15 | I'll try that
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