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


Channel log from 23 August 2016   (all times are UTC)

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14:04
<bennabiy>
on my server, I have a crypttab entry which when I do the ltsp-pnp method of generation, it gets transferred to the fat client image... it causes the boot to hang for 1 1/2 minutes while waiting for those devices
14:04
how do I disable that?
14:05
I want the fat client to be able to have proper fstab entries for those devices, if I need to mount them on the fat client, but I do not need it waiting to try to find the encrypted devices which exist on the server but not the client
14:06
alkisg: Can we unlock the LTSP / Ubuntu wiki to clean up what is VERY outdated (so as to not confuse people?)
14:06
I do not have editing rights to the wiki
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14:30
<bennabiy>
alkisg: how do I cache the image to local disk?
14:37
I can see why people get confused about LTSP. All the initial information they are presented with is layers thick with old heritage...
14:38
I wish we could make a single subcategory which everything pre-12.04 would go into, to not clutter up the displaying of current or potentially needed information
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15:52
<bennabiy>
alkisg: regarding those mini nexbox, they do not have gigabit networking
16:12
<alkisg>
(05:06:38 μμ) bennabiy: alkisg: Can we unlock the LTSP / Ubuntu wiki to clean up what is VERY outdated (so as to not confuse people?) ==> I think that's in #ubuntu-doc... I gave up on ubuntu ltsp wiki a lot of time ago and I'm only maintaining 2 pages there
16:12
!local
16:12
<ltsp>
I do not know about 'local', but I do know about these similar topics: 'install-localapp', 'localdev', 'localapps-print', 'RDP-localdev', 'localapps', 'LocaldevCommonGroupWorkaround', 'localxterm', 'local-disks', 'local-boot'
16:12
<alkisg>
!local-disks
16:12
<ltsp>
local-disks: On fat clients, only sudoers have access to local disks. One way to give access to non sudoers, is to put in lts.conf: RCFILE_01="mkdir -p /media/local_disk && mount /dev/sda1 /media/local_disk"
16:12
<alkisg>
!local-boot
16:12
<ltsp>
local-boot: If you want LTSP fat clients on a low-speed network, you can put i386.img on e.g. C:\Boot\LTSP\i386.img and use this command line in pxelinux.cfg: APPEND ro initrd=ltsp/i386/initrd.img init=/sbin/init-ltsp root=/dev/sda1 rootflags=ro loop=/Boot/LTSP/i386.img; IPAPPEND 3
16:13
<alkisg>
(05:38:03 μμ) bennabiy: I wish we could make a single subcategory which everything pre-12.04 would go into, to not clutter up the displaying of current or potentially needed information ==> if someone decides to work for a few days on the ubuntu wiki, he could surely do that, it would be welcomed by the community
16:13
On the other hand, the ltsp.org wiki is pretty clean, one may use that instead
16:13
<bennabiy>
alkisg: It would be good to point the UbuntuWiki to lead people to the ltsp one
16:14
<alkisg>
(06:52:18 μμ) bennabiy: alkisg: regarding those mini nexbox, they do not have gigabit networking ==> ouch, that's bad. But not too bad since they're fat clients and the server<=>switch connection is still gigabit
16:14
bennabiy: feel free to do whatever you want with the ubuntultsp wiki, I don't think anyone has worked there in ages
16:14
<bennabiy>
alkisg: so I would need to talk to them in #ubuntu-docs?
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16:15
<alkisg>
bennabiy: normally you'd just sign up and do whatever you want
16:15
<bennabiy>
alkisg: all immutable pages
16:15
<alkisg>
You might need to join a few launchpad teams if you want to be able to delete pages
16:16
<bennabiy>
I have no editing rights to them
16:16
<alkisg>
Let me see which group I'm in...
16:16
<bennabiy>
I am working on putting together a local manual for our labs on how to install and use LTSP, and thought I could update some of the documentation while I am working on that
16:17
<alkisg>
bennabiy: https://help.ubuntu.com/community/WikiGuide
16:17
<bennabiy>
If I need my fat client to not have certain services like waiting for cryptdisks etc, how would I go about doing that?
16:18
<alkisg>
Are those in fstab, or somewhere else?
16:19
<bennabiy>
probably
16:19
I use many encrypted drives, and some zfs stuff, so I have fstab / crypttab entries for those, and zfs loaded for it
16:20
<alkisg>
If they are in crypttab, then you'd need to do for crypttab similar things that ltsp does for fstab
16:20
<bennabiy>
and I want to be able to selectively keep those entries on the fat client, but remove the ones that only pertain to the server
16:20
<alkisg>
E.g. CRYPTTAB_1=xxx
16:20
in lts.conf
16:20
<bennabiy>
Re: wiki , I applied
16:21
So the CRYPTTAB_1 etc are entries I want to show up in fat client?
16:21
same with FSTAB?
16:21
<alkisg>
Yes, but you would need to implement that
16:21
<bennabiy>
But how do you deal with a setup where ltsp-update-image -c / generated the server ones to the client?
16:21
just exclude them?
16:21
<vagrantc>
17
16:22
<bennabiy>
Hi vagrantc!
16:22
<alkisg>
Same way as fstab, yes, it's excluded/emptied
16:22* vagrantc waves
16:23
<alkisg>
Hi vagrantc
16:23
<bennabiy>
Where is the code for the lts.conf variables?
16:23
<alkisg>
Some of them are in /usr/share/ltsp/init-ltsp.d
16:23
Just grep for the variable you want, in the ltsp sources
16:23
<bennabiy>
also, do all variables set in lts.conf pass to the client, whether LTSP knows what they are or not?
16:23
<alkisg>
Yes
16:24
<bennabiy>
say I set RANDOM_VAR=True... I could set that for something that needs to be in place in the client and it would make it?
16:24
<alkisg>
Yes
16:24
<bennabiy>
great
16:25
alkisg: so I need to write the CRYPTTAB support, like the fstab support?
16:25
<alkisg>
Yes
16:25
<bennabiy>
ok
16:25
<alkisg>
(if it's similar, I haven't read about crypttab)
16:25
<bennabiy>
similar
16:25
simple entries
16:26
devicename device keyfile options
16:26
whitespace seperated
16:27
also, I cannot ssh from my fat client
16:27
<alkisg>
error message?
16:27
<bennabiy>
https://pastebin.mozilla.org/8904172
16:28
<alkisg>
You've set TEMP to an sshfs path?
16:28
<bennabiy>
my ssh tmp
16:28
<alkisg>
OK, reset it to defaults
16:30
<bennabiy>
where is the best secure place to have ControlPath set to?
16:30
I liked it within the home directory
16:31
<alkisg>
Dunno, ask the ssh people, I like the defaults unless I have a very specific reason to change them
16:39
<bennabiy>
kk
16:39
well, it works when it is not in a sshfs path
16:41
<alkisg>
Yes, sshfs doesn't support sockets, and I don't think it would make much sense since the process is local
16:41
<bennabiy>
yes
16:42
what is the script to copy the img to the local memory and boot from it?
16:43
<alkisg>
That's in the initramfs-tools debian subdir
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16:51
<alkisg>
bennabiy: did you receive those nexbox clients? are they decent, other than the gigabit port?
17:05
<bennabiy>
I have not booted one yet
17:05
trying to get my fat client setup working right
17:05
I am using the zotac right now
17:05
I was going to test them tonight or tomorrow
17:05
They are tiny
17:06
if you took a pi and made it a square based on the length, you would have it
17:07
alkisg: do you have any documentation for the steps to make use of the 32G eMMC for caching the client image for the fat client?
17:09
<alkisg>
bennabiy: no... basically it's dd if=/dev/nbd0 /dev/sda, and then root=/dev/sda in the cmdline
17:09
Or a partition instead of the full disk
17:09
sda1
17:10
<bennabiy>
and you would do that on boot?
17:11
<alkisg>
No, only when the image was updated
17:11
<bennabiy>
so it would be a manual thing
17:11
<alkisg>
It can be automatic, it's just a script
17:11
You can make programs that do anything
17:11
<bennabiy>
how can you tell which nbd device is associated with which image?
17:11
<alkisg>
You can check if a newer image exists, and do it in the background while the client actually works
17:11
nbd0 is always the root disk with the ltsp initscripts
17:12
<bennabiy>
hrm... I need to go, but I want to wrap my brain around this and put it into practice.
17:13
<alkisg>
E.g. by using root=LABEL=LTSP
17:13
<bennabiy>
in what?
17:13
<alkisg>
...you can use /dev/sda1 while syncing /dev/sda2 in the background
17:13
in the cmdline
17:13
And then update the LABEL so that it boots from sda2 in the next boot
17:13
(client side, automatic)
17:14
<bennabiy>
I am probably going to be asking more about this when I get done teaching... back in a few hours
17:14
<alkisg>
bb
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17:38
<FloydATC>
Good evening! I have set up an LTSP server and used it successfully with a few HP thin clients and tested from both 32 and 64bit vmware VMs.
17:39
Recently, I tried using some old 64bit laptops but something strange happens
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17:39
<FloydATC>
I use "blackbox" window managed but instead of loading the correct menu and style, the laptops revert to the (empty) default menu
17:41
I know I must have goofed somewhere but I have no idea how or what would cause this bizarre situation
17:42
# uname -a Linux pixie 3.19.0-33-generic #38~14.04.1-Ubuntu SMP Fri Nov 6 18:17:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
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19:21
<FloydATC>
HAH! I figured it out! It was ofcourse the laptops having more RAM and thus booting the (broken) FAT image
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19:40
<bennabiy>
back
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20:58
<bennabiy>
booting the nexbox now...
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21:27
<bennabiy>
alkisg: first attempt to boot it brought me into win10, trying to change to UEFI network booting got me a black screen
21:28
alkisg: thoughts?
21:30
<alkisg>
bennabiy: change it to csm, legacy network booting, not uefi
21:30
<bennabiy>
how do I do that?
21:30* bennabiy has not run windows in YEARS
21:31
<alkisg>
it's a bios setting
21:31
<bennabiy>
win10 UEFI, no bios
21:31
<alkisg>
Enter the firmware and disable uefi booting, enable legacy mode, and network boot
21:31
Yeah, an uefi setting
21:31
<bennabiy>
how do I enter firmware?
21:31
<alkisg>
F2, Del, things like that
21:32
I think you can also do that within windows, like "reboot to uefi setup"
21:32
<bennabiy>
no option for that on this little thing
21:32
<alkisg>
Google a bit
22:05
<bennabiy>
well, the firmware has much to be desired
22:06
I cannot get it into legacy mode
22:06
I can tell it to UEFI boot network, but that is it
22:06
It supports android booting
22:06
can that be used?
22:06
alkisg: ^