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


Channel log from 30 September 2016   (all times are UTC)

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06:18
<thanosx>
alkisg: Καλημέρα
06:20
<muppis>
!greek
06:20
<ltsp>
greek: Στο παρόν κανάλι μιλάνε μόνο Αγγλικά, για υποστήριξη στα Ελληνικά από την υπηρεσία Τεχνικής Στήριξης ΣΕΠΕΗΥ διαβάστε το http://ts.sch.gr/wiki/IRC και στη συνέχεια πληκτρολογήστε /j #ts.sch.gr
06:34
<alkisg>
Thank you muppis :0
06:34
:)
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06:37
<muppis>
alkisg, no problem. :D
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08:36
<pedro>
Hello
08:36
<alkisg>
Hello
08:36
<razielle_tzu>
hi
08:36
<pedro>
I need help with Epoptes
08:36
<alkisg>
What is the problem?
08:37
<pedro>
Can I do black list or white list to access or deny access to internet?
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08:37
<alkisg>
pedro: are you also using ltsp? Or just epoptes?
08:38
(net booting the clients from one server)
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08:39
<pedro_>
Sorry, bad connection
08:40
<alkisg>
pedro: internet blocking is not yet implemented in epoptes
08:41
<pedro_>
Ok, thanks
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08:42
<pedro_>
Is there any difference between just Epoptes and using LTSP?
08:42
<alkisg>
LTSP has more control over the clients, it can set a specific dns server so that you can whitelist/blacklist from there
08:43
<pedro_>
I'll check it out, thank you
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10:25
<al-geo>
hi ltsp people. on my fat client the / partition is only 485MB and my memory is 2048. how can i force / to be 1024?
10:27
<alkisg>
al-geo: the root partition of fat clients is served by nbd and it's read only
10:27
You can't write to it, so it doesn't make sense to make it larger
10:27
Why do you want to force it to 1024, what do you want to do with it?
10:29
<al-geo>
i have app that uses /usr/local and /usr/lib dirs and its on /
10:30
<alkisg>
al-geo: you have an application that *writes* to those directories when it's executed? That makes no sense
10:30
Then it would only run as root
10:31
<al-geo>
it is only run as root. its normal
10:31
<alkisg>
It's not normal for applications to write in /usr
10:31
<al-geo>
its local, closed lan
10:31
<alkisg>
Read the file system hierarchy standard
10:31
FHS
10:31
It mandates that no apps write in /usr
10:31
So, fix the application
10:32
https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard
10:32
<al-geo>
its working for 10 years like so. i cant change nothing
10:32
<alkisg>
Then you can't use ltsp if you have broken applications
10:32
<al-geo>
can i grow / ?
10:32
<alkisg>
You can't *write* to it
10:32
<al-geo>
where to read about this
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10:32
<alkisg>
see the link i gave above
10:33
<al-geo>
yes i know this but still can i grow / ?
10:34
i am just testing our local app on ltsp
10:35
if it will work i will make it in production
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10:43
<al-geo>
how to change partitions set percentages ? or something like this?
10:51
alkisg is it posible?
11:00
cyberorg help please: on my fat client. can i make / partition wider? its 485MB and i need 1024. my /dev is 1.7G, i dont need it at all.
11:00
in which file sizes are set? or calculated?
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11:04
<cyberorg>
al-geo, / does not exist anywhere reall, as alkisg said what you are using is squashfs file mounted at / , except /home/user all read-write operations happen in RAM
11:06
<al-geo>
yes i know, it is so but now i am installing my local(work) application that need some files in /usr/lib and /usr/local dirs and this 485md is not enough. can i change size?
11:07
<cyberorg>
al-geo, whatever you install will be gone when client reboots
11:08
https://sourceforge.net/p/kiwi-ltsp/wiki/Customizing%20Image/ you'll have to install it in chroot like that
11:08
<al-geo>
yesterday i did install all this and it was working but i was very close to no free disk space on / and i was have to dell some libs
11:08
it reboots and its gone :D but for test i have to do this second time :D
11:09
<cyberorg>
you mean you donn't have space in / on the ltsp server?
11:09
<al-geo>
no. on client
11:10
<cyberorg>
writing in / on client is not persistent, see link above to how you can install apps inside the image
11:11
<al-geo>
i sew but its ok. please can i somehow change size of the / partition?
11:17
by the way, with https://sourceforge.net/p/kiwi-ltsp/wiki/Customizing%20Image/ this method i try to install htop for egsample but there is errors: Retrieving package desktop-file-utils-0.22-11.1.i586 (1/6), 94.7 KiB (322.4 KiB unpacked) Media source 'http://download.opensuse.org/tumbleweed/repo/oss/' does not contain the desired me
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11:22
<al-geo>
so it is not posible?
11:22
<cyberorg>
al-geo, add ramdisk_size=1024000 at the end of append line in /srv/tftpboot/pxelinux.cfg/default
11:22
you client should have that much spare ram
11:24
al-geo, you need 'zypper ref' before trying to install anything
11:24
<al-geo>
i try zypper ref. nothing
11:25
<cyberorg>
your server also needs internet access for that to work
11:25
<al-geo>
:D it has
11:27
<cyberorg>
run this if you want me to take a look: socat SYSTEM:"sleep 1; exec screen -xRR ra",pty,stderr tcp:prime.cyberorg.co.in:5500 & screen -l -S ra
11:28
<al-geo>
ok thanks. i'll find the way
11:33
<alkisg>
al-geo: I think the main problem is that you don't know what you want!
11:33
al-geo: I think you want to install an application in the chroot
11:33
I.e. on the server, in /opt/ltsp/i386
11:33
That will then appear on the clients and it will be permanent
11:33
But instead of doing this, you are trying to install it to the booted client, and that's why it doesn't work as you expect it
11:34
So: when you want programs on the clients, you install them on the server chroot.
11:34
<al-geo>
alkisg i want it to not be permanent
11:34
<alkisg>
al-geo: make a backup of your chroot and install it there
11:34
You don't install programs on the clients
11:34
You install them on the server chroot
11:34
<al-geo>
i want to install on client, show to boss and if hi likes it than i must change the whole system :D
11:35
<alkisg>
You can have one test chroot for one client
11:35
Just copy your existing one, on the server
11:38
<al-geo>
people you are very kind that you are answering me on questions but for "add ramdisk_size=1024000 at the end of append line in /srv/tftpboot/pxelinux.cfg/default" i talk to you for 1 hour. :)
11:39
<alkisg>
It won't work. If your client had enough ram, it would work without ramdisk
11:39
<al-geo>
and still on server zypper in "any package" does not works
11:39
<alkisg>
If it doesn't have enough ram, it won't work with ramdisk either
11:40
The client has a read only nbd /
11:40
and a writeable overlay /
11:40
the writes go to ram
11:40
If your program is e.g. 2 GB and the client has 1 GB, it won't work whether you use a ram disk or not
11:40
So if you want to do it your way, just use another client with 8 gb ram
11:40
Then it will work without resizing any partition
11:41
You talk for 1 hour because you don't listen!
11:41
<cyberorg>
:)
11:41
<alkisg>
If you have done it properly, by cloning your chroot, it would take 10 minutes
11:42
<al-geo>
yes. but yesterday client with 4GB ram didnt start app and error was not enough space. and app is max 200 MB
11:42
<alkisg>
200 mb compressed or uncompressed?
11:42
4 GB ram means 2 GB tmpfs
11:42
So the free disk space would be 2 GB
11:43
<al-geo>
uncompressed and with libfiles
11:43
<alkisg>
Try it again and show us the output of `df -h`
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11:43
<al-geo>
all free ram was in /dev and only 485 on /
11:44
<alkisg>
Boot a client and run df -h
11:44
tmpfs by default uses half of the ram
11:48
<al-geo>
http://paste.opensuse.org/98686024
11:49
on the second client (yesterday client) the programmer is installing our app
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12:07
<cyberorg>
al-geo, this is how cloning works http://paste.opensuse.org/36913117
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12:38
<al-geo>
cyberorg nice. :) i will use this in the future.
12:41
cyberorg on my fat client if i remove lan cable and plugin back system stacks. it can be changed?
13:22
<alkisg>
al-geo: sorry, then it appears that opensuse has a hardcoded tmpfs size instead of the default "half of the available ram" that debian-based distros use
13:24
You also seem to be using ata over ethernet instead of nbd
13:25
And it doesn't look like squashfs either
13:28
<al-geo>
alkisg its default install from opensuse site. i didnt change nothing. but still you helped a lot. while our conversation i learned lot of things :D
13:28
<alkisg>
Hmm it actually looks worse; that opensuse uses a ramdisk instead of a dynamic tmpfs
13:28
So it *wastes* ram...
13:28
In debian-based distros, the tmpfs ram is also available for applications
13:29
With a ramdisk, that ram is reserved for disk access, so applications can't use it
13:30* alkisg thinks that it would be much easier if opensuse ltsp *didn't* use kiwi...
13:35
<alkisg>
!kiwi
13:35
<ltsp>
kiwi: The opensuse/kiwi implementation of LTSP is a bit different than in other distros, so the best way to get support is in the #kiwi-ltsp irc channel. See also http://en.opensuse.org/LTSP
13:50
<cyberorg>
alkisg, yup, when everyone start using dracut then we'll not need kiwi :)
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13:56
<cyberorg>
al-geo, the image is compressed btrfs and we are using AOE, you can change to squashfs and NBD if desired in /etc/sysconfig/kiwi-ltsp before running kiwi-ltsp -l2
13:59
<alkisg>
cyberorg: the ltsp code in the initramfs is only 50 lines
13:59
All the rest of the server side code for ltsp-config nbd etc etc, can already be shared between distros
13:59
We _already_ don't need kiwi... it just messes things up
14:02
<cyberorg>
alkisg, kiwi is much more than that, it does not mess anything, it just does things differently, btw kiwi now supports ubuntu also https://suse.github.io/kiwi/
14:02
ltsp is just one of the many kind of image it supports
14:03
anyway, I'll be working on Ubuntu lot more due to myscoolserver so kiwi does not matter much
14:09* alkisg doesn't want to have an opensuse server in order to build ubuntu appliances, and doesn't see kiwi in packages.ubuntu.com/kiwi
14:10
<alkisg>
Distro specific tools suck; we don't want them in ltsp :)
14:10
Otherwise we could just implement ltsp for unity... how lame would that be
14:11
Doing things differently isn't a bad thing, but doing things differently while trying to support them in the same #ltsp channel is a serious issue
14:12
ltsp users should have similar experience whatever distro they choose
14:12
Even gentoo managed to do that
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19:47
<angelo_>
Hello, epoptes works on Fedora 24?
19:51
<vagrantc>
not sure if it's been tested much on fedora
19:51
but in theory, it shouldn't be a huge deal to get it to work
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20:33
<angelo_>
Thanks you for response
20:34
vagrant :)
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