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I was wondering if this project monitors history?
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My name is Pedro and I'm a teacher. I use Epoptes and today, when I started it I couldn't see any computer of the students
pedro__: are you using ltsp, i.e. netbooted computers?
They are fat clients
Do they have a local linux installation in their disks?
Yes, they have
Which distribution and which version?
Yesterday I had problems with two of the computers and executed sudo epoptes-client -c on them, but I executed it on the server too. Could this be the problem?
Ubuntu 16.04.3 LTS
Yes, if you executed epoptes-client -c on the server, it erased its certificate
Run this, on all your computers: ls -l /etc/epoptes
If you see any files that are zero size, they have issues and need to be copied from elsewhere
Ok, there are some of the computers with server.crt with zero size
pedro__: you need to copy that file from a correct computer, to the other damaged computers
To the server too
Can I copy any certificate from any computer to the rest of them?
Ok thenks. I'll try that
They should be exactly the same
You can run this, to verify: md5sum /etc/epoptes/*
If you see the same md5sum, it's the same file
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hello I would like to know if we can make a server linux leger LSTP and boot on a mac
What does "leger" mean?
I would like to have a Linux Terminal Server Project (Debian or Centos) but boot on a Mac
neops: the server would be mac or the client would be mac?
no Mac just Client
neops: can your mac boot debian normally? is it a usual x86 architecture?
yes alkisg mac book pro 2011 intel
core 2 duo
neops: if it boots debian normally, then it will boot ltsp normally as well
ok I'll try this weekend
pedro__: if you put the .crt file on the server, and restart the server, then you can copy it to the other clients by just running `epoptes-client -c`
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You're welcome :)
Now I can see all the computer except one. It has got the same certificate but it doesn't appear
Check its bios date, if it's wrong, then the certificate is invalid
If so, replace the cmos battery
I'm going to check it
|11:49||* alkisg needs to leave, ciao for now...|
Goodbye and thanks again
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My students pointed out today that the clocks on my fat clients are wrong. They are displaying GMT I think (5 hours off from EST)
i've heard this reported a few times recently...
distro, release, ltsp version?
ltsp-info: please run ltsp-info and paste the output to http://ltsp.pastebin.com
vagrantc, Running ubuntu 16.04 https://pastebin.com/ad7tFTLR
looks like you have both an amd64.img and fat-amd64.img ... do you know which is actually being used?
Pretty sure only the amd64
JuJUBee: using a client chroot? ...
I don't have /opt/ltsp/fat-amd64 dir
JuJUBee: check the contents of /opt/ltsp/amd64/etc/timezone
JuJUBee: ls -l /opt/ltsp/amd64/etc/timezone
that would most likely explain it
is it a symlink or a regular file?
check the contents of the server's /etc/timezone, and if it's what you want, you should be able to copy it into the chroot and rebuild the image
that *should* work
why it isn't doing that out of the box is a bit mysterious
is the server's /etc/timezone a symlink?
This seems to have happened recently, maybe around time change...
I'll change it and rebuild the image
hmmm... there's a subtle difference in the ubuntu and debian timezone configuration for ltsp-build-client ... that might be the issue
JuJUBee: did you rebuild the image around then?
no, not since late September
well, the image wouldn't switch timezone without rebuilding it
I rebuilt it Tuesday to see if that would fix it, but it did not
ah, simpler option: set TIMEZONE= in lts.conf
hrm... that might be broken
well, it's worth trying...
it must be broken I already had that set
JuJUBee: ls -l /opt/ltsp/amd64/etc/localtime and /etc/localtime
er, drop the "and" :)
|19:07||* vagrantc half-thinking in shell and half in prose|
lrwxrwxrwx 1 root root 27 Feb 6 2017 /opt/ltsp/amd64/etc/localtime -> /usr/share/zoneinfo/Etc/UTC
hmmm... that might break the way TIMEZONE is implemented, not sure
Question is why is that pointing to Etc/UTC and not America/New_York
because the code that generates the chroot doesn't touch that file
|19:11||* vagrantc suspects the timezone handling in ubuntu changed in some release and the ltsp-build-client plugins never got updated to reflect that|
so should I re-create the link to localtime?
ltsp-build-client hasn't really been well maintained ... mostly switched to using ltsp-pnp style in recent times
what is the main advantage of using pnp for me?
JuJUBee: if you could file a bug in launchpad, that would mean the issue doesn't get lost
JuJUBee: people are actually testing the code path?
JuJUBee: also, looks like you at least experimented with fat clients at some point, and this is easier to maintain with ltsp-pnp
Should I note that the symlink points to the wrong timezone?
I use fat clients
I think I copied the old amd64 image to fat-amd64 as a backup at one point
basically, you just install the server with the software you want, and then build an image out of that
But only have fat clients for now.
no separate chroot to maintain
the thought of starting over from scratch worries me as the school year is well underway.
JuJUBee: have you upgraded the chroot ever?
I stick with lts releases only
JuJUBee: in the bug report, include the ls -l /etc/timezone /etc/localtime /opt/ltsp/amd64/etc/timezone /opt/ltsp/amd64/etc/localtime, your lts.conf (sanitized, if you need to), the ltsp-info output
JuJUBee: and also the contents of /etc/timezone and /opt/ltsp/amd64/etc/timezone
OK, working on it now...
might also be worth checking if such a bug report already exists
following up to that might be good
do you want me to submit the ls -l for each of those initial dirs or only the first and contents of the rest?
and/or that one
actually, the latter bug looks more appropriate
and that would also affect using TIMEZONE in lts.conf ...
which wouldn't matter weather you're using ltsp-pnp or a chroot
Done, I commented on second bug
SO I edited the incorrect timezone file to America/New_York and after rebuilding the image and rebooting client the time seems correct
We will see what happens Monday morning...
Thanks for the assistance
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Any reason why a ltsp fatclient can't access the libraries?
Or open a socket bind()???
Thinclients have no issues with either.
JerryT: what libraries?
Really any of them. The application looks in several locations and has an issue finding them. They're on the Host machine, and the image was rebuilt.
and they made it into the image?
if the client boots to a desktop, it's accessing /usr/lib just fine
JerryT: is /usr on a separate partition?
Yah, I'm not sure what the issue is. Maybe LD_LIBRARIES or something is flaky. I'm not sure.
vagrantc, no, everything resides on /dev/sda1
seems more likly than LD_LIBRARIES going wonky
though that should usually crash a client
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JerryT: what is the command that you run and the error message that you see? put them to pastebin...
What's that do exactly?
Or what's it's affect on systems?
Answer mine first :P
It doesn't affect the nbd image
/usr, /lib etc are accessed via nbd, not ssh
It allows /home/user/folder symlink to follow the contents to /some/server/dir
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(follow them from the client to the server)
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