IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 22 August 2016   (all times are UTC)

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17:54
<dgroos>
hi All
17:54
just installed 16.04 then ltsp-pnp as per https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
17:55
clients will boot, but I can't ping 8.8.8.8 on clients. Can ping 192.168.67.1
17:55
I've got a 2 NIC setup.
17:56
Anyone share ideas how I can troubleshoot lack of internet connectivity on the clients?
18:03
cat /etc/resolv.conf on a client shows just:
18:03
192.168.67.1
18:03
that right?
18:14
<vagrantc>
you need to set up NAT on your LTSP server
18:15
or connect your clients to a network that's routable
18:15
or use thin clients, but i'd recommend sticking with fat clients if your hardware is reasonably good
18:16
<dgroos>
thanks vagrantc
18:16
<vagrantc>
!nat
18:16
<ltsp>
nat: To set up NAT in your LTSP server, set its internal IP to 192.168.67.1 and put http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/head:/debian/sch-scripts.if-up to /etc/network/if-up.d/sch-scripts. This also takes care of flow-control issues, possibly increasing your network speed 10 times. :)
18:16
<vagrantc>
well, that's specific
18:16
<dgroos>
:-)
18:16
I'll give it a go!
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18:33
<dgroos>
OK going to reboot server...
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18:33
<vagrantc>
shouldn't need that...
18:41
<bennabiy>
alright, I am finally biting the bullet and going fat client...
18:41
if you don't hear from me... give my wishes to my fami... wait.
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18:49
<dgroos>
vagrantc, I remember alkisg helping me with this very step last year. I should have tried it--had it written down.
18:49
<vagrantc>
dgroos: hah
18:49
bennabiy: fat clients are generally the way to go in this day and age
18:50
bennabiy: i can't imagine you'll have much other than a positive experience...
18:50
<dgroos>
Client is not booting--stops at tftp stage.
18:50
I've done a lot of messing around with things in the last 5 hours trying to solve this.
18:51
gonna reinstall ubuntu and do this fix when things are clean.
18:51
Be back in a while!
18:51* alkisg waves
18:52
<dgroos>
:-) Hey there!
18:52
<alkisg>
dgroos: reinstall to solve tftp?!
18:52
Need help there?
18:53
<dgroos>
would be great! alkisg
18:53
<alkisg>
!vnc-dide
18:53
<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.
18:54
<dgroos>
thanks!
18:54
tried, last line says: reverse_connect: srv1-dide.ioa.sch.gr failed
18:55
before that: connect_tcp[ipv6]: setsockopt IPV6_V6ONLY: Protocol not available
18:55
<alkisg>
dgroos: try again, my fault
18:55
Somehow xvnc4viewer wasn't launched this time
18:59
dgroos: all ok?
19:00
<dgroos>
OK! boots.
19:00
<alkisg>
5 minutes in VNC beat 5 hours in IRC every time :)
19:00
<dgroos>
For sure, though 5 hours of my time vs 5 min of yours :-)
19:00
thanks!
19:01
<alkisg>
You're welcome
19:01
<dgroos>
Now, I can't ping 8.8.8.8 from a client. I did the sch-script ifup
19:07
<alkisg>
!nat
19:07
<ltsp>
nat: To set up NAT in your LTSP server, set its internal IP to 192.168.67.1 and put http://bazaar.launchpad.net/~ts.sch.gr/sch-scripts/trunk/view/head:/debian/sch-scripts.if-up to /etc/network/if-up.d/sch-scripts. This also takes care of flow-control issues, possibly increasing your network speed 10 times. :)
19:07
<alkisg>
dgroos: you put it to sch-scripts.ifup, instead of plain sch-scripts
19:07
And it wasn't running at all
19:07
<dgroos>
alas!
19:07
Again, thanks so much for doing this.
19:08
Is this needed because I'm doing a 2 NIC setup?
19:08
<alkisg>
Yes
19:09
<dgroos>
OK, I'm going to add this info to the 'StaticIP'. wait... not that page
19:10
Can you suggest a new page to create on the site and I'll make it w/the info.
19:10
<alkisg>
I think I should add it upstream to ltsp, even if vagrantc will complain about it a bit :)
19:10
<dgroos>
Yeah, I need to read detail more closely p-)
19:11
<alkisg>
So that in the end, only an `ltsp-config pnp` will be needed...
19:11
<dgroos>
Well I give it multiple +1
19:11
This stopped me last year too though there was something else.
19:12
1 more Q: How can I set it so that the client has the modern login.
19:12
<alkisg>
What do you mean?
19:13
<dgroos>
only has to put in password
19:13
and if it's wrong, the page doesn't reload
19:13
<vagrantc>
alkisg: we kind of got stalled out on uploads ... do you still want to follow up on that, or should i give it a whirl?
19:13
<dgroos>
ie not the beautiful 'white background' splash page
19:14
<alkisg>
dgroos: I think you mean "use lightdm instead of ldm"
19:14
<dgroos>
OK :-)
19:14
<alkisg>
That cannot be done easily, ltsp needs its own display manager
19:14
So, forget about it until ltsp 6 :)
19:14
<dgroos>
OK,
19:15
anything that a person with my knowledge can do to help out some?
19:15
<alkisg>
vagrantc: too many summer vacations... and then too much work will follow... so I don't think I'll be working on that until maybe late september
19:16
<dgroos>
I can do a translate or test or something? Haven't helped out is a while.
19:16
<vagrantc>
alkisg: ok, i should probably get ltsp back into a working state in debian ... and maybe sync up epoptes and ltsp in jessie-backports...
19:16
alkisg: that was all we had on the agenda, right?
19:17
<alkisg>
dgroos: nah, unfortunately currently ltsp needs from someone a lot of time in either documentation or coding, spending a couple of days won't be very useful... so bug reporting or sponsoring tasks is enough until someone finds enough time to work on ltsp
19:17
vagrantc: I think so, yes
19:18
<dgroos>
OK
19:18
Have a great evening!
19:18
<alkisg>
You too!
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21:00
<bennabiy>
alkisg: I am running into the situation again when trying to run ltsp-update-image --cleanup / about my mounted drives (anything which has a bind mount on it)
21:01
What file do I need to edit to restrict those folders?
21:01
<alkisg>
bennabiy: /etc/ltsp/ltsp-update-image.excludes
21:01
<bennabiy>
alkisg: thank you.
21:01
<alkisg>
np
21:04
<bennabiy>
not working...
21:04
mount: mount point /tmp/tmp.Toksgfzxyc/root/home/gad/Documents/SECURE does not exist
21:04
Could not mount /tmp/tmp.Toksgfzxyc/root/home/gad/Documents/SECURE.
21:05
<alkisg>
What did you put in .excludes?
21:06
<bennabiy>
home0/*
21:06
home/gad/Documents/SECURE/*
21:06
home/gad/D... is bind mounted from /home0/
21:07
from a folder within home0
21:08
<alkisg>
I don't remember, did we solve the issue last time, and how?
21:09
<bennabiy>
I filed a bug report, but I do not remember us actually getting a solution
21:10
<alkisg>
link?
21:10
<bennabiy>
other than for me to totally unmount it all before running the script
21:10
umm, I would have to dig it up... it was a couple years ago
21:10* alkisg thought all such issues were resolved a while ago
21:12
<bennabiy>
nope
21:12
this is part of what has kept me from doing fat clients now that I remember
21:12
<alkisg>
fat clients is not specific to ltsp-pnp
21:13
<bennabiy>
yes, but I was trying to do linuxmint fat client before I had full support for mint
21:13
It is slowly coming back to me
21:14
<alkisg>
Did you find the bug?
21:23
<bennabiy>
nope
21:23
I am looking through the mailing list as well
21:24* alkisg doesn't see anything related to https://bugs.launchpad.net/~bennabiy ...
21:26
<bennabiy>
ok, well, I will have to look into this more later. My time is up.
21:26
If you think of anything, I will check later
21:26
thank you alkisg
21:26
I will file a report later if I remember
21:27
<alkisg>
bennabiy: make sure you're using the latest ltsp version
21:28
<bennabiy>
alkisg: https://pastebin.mozilla.org/8903267
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21:29
<alkisg>
Seems fine
21:29
<bennabiy>
yup
21:29
<alkisg>
Is that on the latest mint?
21:29
<bennabiy>
16.04
21:29
ubuntu-mate
21:30
<alkisg>
OK, file a bug report and include all the necessary info, like existing mounts, error messages etc
21:30
I.e. some way to reproduce it...
21:31
<bennabiy>
It is when there overlapped file mounts
21:31
say home0 is a device, but then I mount another device within /home0
21:32
I have /home as a seperate partition, and then I bind mount onto it something else
21:32
<alkisg>
I have /home mounted from /dev/sda1, and /home/Shared from /dev/sda2, and it works fine
21:32
<bennabiy>
that is what is happening
21:32
encrypted?
21:32
<alkisg>
No
21:32
Normal ext4
21:33
<bennabiy>
these are also luks /dev/mapper/device mounts
21:33
<alkisg>
OK, describe a simple way to reproduce it in the bug report
21:34
<bennabiy>
will try
21:35
<vagrantc>
can't imagine luks will cause any additional problems
21:35
a device is a device is a device
21:35
<bennabiy>
I am trying to think of what is different about the setup
21:35
<vagrantc>
sure
21:35
<bennabiy>
because my thumbdrive which is luks was also causing the error
21:36
then it switched to the other luks device
21:36
one direct mounted through fstab, the other a bind mount
21:37
so I unmount that directory, and it works fine
21:37
<alkisg>
vagrantc: what do you think of this, for people looking for extremely cheap fat clients? http://www.gearbest.com/tv-box-mini-pc/pp_367432.html
21:37
<bennabiy>
alkisg: that is a good deal, but it is double the price in a couple hours
21:38
<alkisg>
bennabiy: what do you mean? the old offer expired, and the new offer is 1 euro cheaper than the old one...
21:38
They make offers all the time
21:38
<bennabiy>
I just got a https://www.amazon.com/ZOTAC-Quad-Core-Graphics-Barebones-ZBOX-BI323-U/dp/B0179R42V4
21:38
ah,
21:39
I did not check on it
21:39
we ordered two but have not received them yet
21:39
<alkisg>
That zotac does have double the price though
21:40
Also, no ram, no internal memory...
21:41
<bennabiy>
yes, I have ram on hand as well as drives
21:41
<alkisg>
Sure, but that means triple the price
21:41
<vagrantc>
alkisg: looks reasonable ... dunno what proc or video it's got
21:42* vagrantc reads further
21:42
<bennabiy>
alkisg: I am not saying that the one you linked is a bad deal, just telling you I am trying them both out
21:42
<alkisg>
vagrantc: Intel Z8300 Quad-core CPU/Intel HD Graphic as GPU
21:42
<bennabiy>
vagrantc: Atom X5-Z8300
21:42
<alkisg>
passmark score = 1200
21:42
<bennabiy>
The Z8700 looks impressive for Atom
21:42
<vagrantc>
with 32GB of eMMC, you could do local swap and rootfs
21:42
<alkisg>
Right
21:43
<bennabiy>
you would not want to local swap to eMMC though
21:43
<alkisg>
And even secure boot :P :D
21:43
<vagrantc>
and that would leave a lot of room for wear leveling
21:43
<bennabiy>
right?
21:44
well, I need to go...
21:44
<alkisg>
bb
21:44* bennabiy waves
21:44
<vagrantc>
bennabiy: if it supports wear-leveling, and you only use 10% of the disk ... even if you used 90% of the disk, any reasonble recent memory-disk tech will last a long time
21:44* vagrantc waves to alkisg
21:46
<vagrantc>
i'd guess 1-2GB for rootfs (if using squashfs) and 2-4GB for swap ... that's 6gb ~ 20% usage, with 24G for wear-levelling (presuming it doesn't even have 5-10% set aside in hardware)
21:46
if it supports TRIM, you're set.
21:46
to wipe out the windows install and free that up for wear levelling
21:47
<bennabiy>
as far as the eMMC I thought it was just a memory card on board, not your normal ssd
21:48
didn't think it supported trim
21:48
etc
21:48
but I am probably wrong about that
21:48
<vagrantc>
most of the arm board eMMC i've seen supports trim
21:48
<bennabiy>
that would be encouraging
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