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


Channel log from 1 December 2015   (all times are UTC)

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11:07
<adimetrius>
alkisg, i have installed ubuntu1510 on server, and initially the client worked well, but now it won't get past login prompt: i enter password and username, screen goes black as if it is logging in, but then login screen returns
11:08
<alkisg>
adimetrius: when you say "initially it worked well", do you mean that previously you were able to login?
11:08
<adimetrius>
yes
11:08
<alkisg>
What changed?
11:08
<adimetrius>
i migrated my old user accounts by manually editing passwd and shadow and group and gshadow, could i have messed smth up there?
11:08
<alkisg>
Sure, but that part is not ltsp-related
11:09
There's a tool to check passwd and shadow for validity
11:10
<adimetrius>
well i created a new user on server and it won't log into the client either
11:10
<alkisg>
If passwd is broken, the problem is not related to ltsp even if you experience it on an ltsp client
11:10
<adimetrius>
ok
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14:11
<adimetrius>
from a client, i can only see my own folder under /home. I need to see home folders of other users under /home. Is it configurable?
14:11
i use ltsp-pnp
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15:35
<||cw>
adimetrius: you might have to use NFS for /home then
15:36
I don't know off-hand how to do that for pnp
15:36
<adimetrius>
i'm now switching back to non-pnp
15:37
i couldn't find a good explanation of how pnp works, is there one?
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15:39
<Agustin>
Hello!
15:40
I have a problem with LTSP server. When the thin client boot, not open socket to nbd server. Where is the problem? Thanks! Sorry for my bad english
15:43
<||cw>
adimetrius: it basically uses the server's / to generate a client image instead of a chroot. doing so means you can have identical thin clients and thick clients and automatic selection of what mode to use based on client ram
15:44
<adimetrius>
how can i get the automatic part to work? currently, i can't get the "old" way to work, i get a "Socket failed connection refused" error on client from nbd
15:44
<||cw>
otherwise it works the same, excluding /home in the image, and mounting it via sshfs
15:44
is ndb running?
15:44
<adimetrius>
hm...
15:45
<||cw>
after the first ltsp-update-image you might need to manually start it, or reboot the server
15:46
the automatic part is based on the FAT_RAM_THRESHOLD lts.conf option, 300MB ram by default (which seem low to me :P )
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15:48
<work_alkisg>
adimetrius: in lts.conf there is an FSTAB option to enable nfs if you want, but you can also see /home if you have an sshfs symlink for that
15:48
<adimetrius>
i think it's running
15:48work_alkisg is now known as alkisg
15:49
<alkisg>
Agustin: which distro/version?
15:49
||cw: I think it's 400, not 300, isn't it?
15:50
The idea was "512 ram - some videoram"
15:50
<||cw>
http://manpages.ubuntu.com/manpages/wily/en/man5/lts.conf.5.html says 300
15:50
documentation lag?
15:50
<alkisg>
Hrm, true, I'm using 400 locally here
15:51
No no the docs are right, but ltsp-config lts.conf should make it 400
15:51
So for ltsp-pnp, by following the wiki page, it should be 400
15:51
<||cw>
personally I'd use 700, unless the client software use didn't include a web browser
15:51
<alkisg>
Well, if you have 100 mbps network, a 512 mb ram client works better as fat
15:51
It's a tradeoff
15:52
Also there are some light multimedia apps like tuxpaint, tuxtype etc, which work a *lot* better as fats with <=512 ram
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15:53
<alkisg>
And of course if one has a light server, with e.g. 2 GB RAM, there's not much point in having a lot of thin clients there
15:55
Meh no the 400 threshold is only in the localized greek version of lts.conf...
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15:57
<adimetrius>
I get Socket failed: connection refused on the client, can't get nbd to work
15:58
<alkisg>
What did you do after ltsp-pnp was working?
15:59
<adimetrius>
i need /homes of users to be visible to each other
15:59
<alkisg>
ltsp-pnp is not related to that
15:59
It's the same for non-pnp as well
15:59
You either need NFS or EXTRA_MOUNTS
15:59
<adimetrius>
i had /homes visible under 12.04 ltsp
15:59
<alkisg>
Did you have nfs?
15:59
<adimetrius>
no
15:59
it was nbd
16:00
<alkisg>
You are confused
16:00
nbd is for the root file system, /
16:00
it's read only
16:00
/home is mounted with either nfs or sshfs
16:00
The default for ltsp has been sshfs, unless you used NFS_HOME=True in lts.conf
16:00
NFS_HOME=True has been deprecated in favor of FSTAB_1="nfs..."
16:01
And you can also see /home with an sshfs symlink
16:01
These are your options, pick one.
16:02
This is the lts.conf line for nfs home, you uncomment it, you install nfs-kernel-server, and you put /home in /etc/exports. #FSTAB_1="server:/home /home nfs defaults,nolock 0 0"
16:02
Or you make an sshfs symlink instead of using nfs
16:04
<adimetrius>
i didn't have any lines like that in old lts.conf under 12.04, it worked out of the box with nbd and squashfs mounts
16:05
so you are saying i can have pnp and FSTAB= ?
16:05
<alkisg>
I can't say a lot more to convince you. I wrote the code to convert NFS_HOME to FSTAB, if it helps you to believe me.
16:06
<adimetrius>
i believe you :)
16:06
<alkisg>
Sure, the -pnp part is unrelated to anything else that you do with ltsp, they are the same in pnp and non-pnp
16:06
You can use FSTAB etc
16:06
Ah
16:06
Here's what probably happened
16:07
You were using thin clients and now you're suddenly using fat clients
16:07
So, before doing anything else, do this:
16:07
open lts.conf
16:07
Under [Default], put:
16:07
LTSP_FATCLIENT=False
16:07
Reboot all your clients. They will all boot as thin clients, and you will have /home as you want it.
16:08
<adimetrius>
you are very helpful alkisg, thank you very much, and i am in fact confused
16:08
<alkisg>
adimetrius: what are your client specs? cpu/ram?
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16:14
<adimetrius>
the weakest is PIII 733MHz 512MB
16:14
others are P Dual-core 2.5GHz 2GB
16:14
or similar
16:14
<alkisg>
Then you should use those as fat clients
16:14
How many clients? What are the server specs? do you have gigabit networking?
16:15
<adimetrius>
4 clients and gigabit networking on 3 of them
16:16
on fat clients, i still would need FSTAB= to see other /homes?
16:16
<alkisg>
Do some test:
16:16
First, boot with all of them as thin clients, like you had in the past
16:16
By putting LTSP_FATCLIENT=False in lts.conf
16:17
If their performance is fine for you, problem solved, you are like you were in 12.04, no need to worry about fat clients, fstab etc
16:17
<adimetrius>
i cant boot them like in the past, 'cause i can't get nbd to serve the squashfs image
16:17
<alkisg>
(05:58:21 μμ) alkisg: What did you do after ltsp-pnp was working?
16:18
<adimetrius>
ltsp-build-client
16:19
<alkisg>
You broke it a bit
16:20
...I think it will be faster if we do this with vnc again...
16:20
!vnc-dide
16:20
<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.
16:23
<alkisg>
adimetrius: when it's done, try to boot a client, and then ping me
16:23
<adimetrius>
ok
16:27
thin client boots and logs in just fine
16:27
but i guess it is fat
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16:30
<alkisg>
adimetrius: correct, now it will boot as thin
16:30
Epoptes is nice, isn't it? :)
16:30
sorry I didn't mean to stop you from typing
16:30
<adimetrius>
AMAZING!
16:32
<alkisg>
So this is Unity on thin clients
16:32
I think it sucks, it's too slow
16:32
Now you need to decide if you want to use them as thin clients or as fat clients
16:32
<adimetrius>
what do u use?
16:32
<alkisg>
I use gnome-flashback, but ubuntu-mate and lubuntu and xubuntu are fine too
16:32* quinox uses fat clients with KDE, Awesome and Mate
16:33
<alkisg>
You can use unity on fat clients, it's not a problem there
16:34
<adimetrius>
ok, now i see all /homes, but it is slower. how can i set up fat clients to see all /homes?
16:35
epoptes needs to be mentioned in you ltsp-pnp page!!!
16:35
<alkisg>
OK, I'll put it in the "see also" page at the bottom
16:37
Now it will boot as fat with nfs
16:38
<adimetrius>
but still uses nbd and sqashfs?
16:38
<alkisg>
tftp, nbd, squashfs, and nfs
16:39
/home appears fine now
16:39
<adimetrius>
great!!
16:50
thank you very much, i now have the setup that i want
16:51
<alkisg>
You're welcome
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19:16
<tamadmin>
hi
19:17
what is new in epopyes
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19:20
<vagrantc>
in the last 4 minutes... hard to say.
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19:35
<Hyperbyte>
popeyes?
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22:01work_alkisg is now known as alkisg
22:03
<alkisg>
popeye has a big eye and oversees things well (=epoptes) :)
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23:11
<Hyperbyte>
My my, epoptes, what big eyes you have.
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