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


Channel log from 22 September 2017   (all times are UTC)

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08:48
<variona>
I need some advice concerning the CRONTAB_01 parameter...
08:48
(part of)lts.conf: CONFIGURE_FSTAB= TRUE FSTAB_0="/dev/disk/by-uuid/a6008ac9-cad1-49b0-9eea-ddf446840b43 /home ext4 defaults 0 0" CRONTAB_01="* * * * * /home/camus/crontest"
08:48
this is /home/camus/crontest:
08:48
#!/bin/bash touch /home/camus/touched
08:49
<alkisg>
Is this in a single line? bash touch?
08:49
<variona>
I checked: if executed by hand the script works
08:49
root@acer-aspire:~#/home/camus/crontest root@acer-aspire:~#ls -l /home/camus/touched -rw-r--r-- 1 root root 0 Sep 22 10:33 /home/camus/touched
08:50
I checked on the client:
08:50
root@acer-aspire:~# ps ax| grep cron
08:50
1725 ? Ss 0:00 /usr/sbin/cron -f
08:50
root@acer-aspire:~# cat /etc/cron.d/ltsp
08:50
* * * * * /home/camus/crontest
08:51
But it doesn't produce a /home/camus/touched file...
08:51
<alkisg>
Isn't that wrong syntax there?
08:51
Don't you need a user account too?
08:51
* * * * * root /home/camus/crontest
08:53
man 5 crontab for the cron syntax
08:53
<variona>
I'm rebooting the client now!
08:55
@alkisg BINGO! Thank you!
08:56
<alkisg>
np, it was not an ltsp issue after all ;)
08:59
<variona>
My bad was: I took the syntax from a crontab -e created file (a user crontab file)
08:59
<alkisg>
Gotcha
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21:19
<alazyworkaholic>
dnsmasq won't start because of a port=0 line. Is this configuration not necessary when using an unmodifiable router as a dhcp server?
21:22
There error is (translated): illegal keyword repetition at line 56 of /etc/dnsmasq.d/ltsp-server-dnsmasq.conf
21:35
<||cw>
the error implies that port= is already set somewhere else, you should only have one.
21:35
and if you want to disable its dns, it's needed
21:57
<alazyworkaholic>
||cw: thanks, I was just reading through the various dnsmasq related files on my system to try to figure out how they fit together. In /etc/dnsmasq.d I have /ltsp.conf and /ltsp-server-dnsmasq.conf. port=0 in both of them. Would that be the problem?
21:58
<||cw>
likely. I'm nto sure why you have 2
21:58
upgrade gone wacko?
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21:59
<||cw>
you should probably only have 1 of those. I just use my external dns and dhcp, which is a little manual config, but plays nice with my other PXE stuff
21:59
<alazyworkaholic>
||cw: I'm on a freshly installed Xubuntu 17.04. I've been trying to get LTSP to work for a while now, and may have a couple redundant files.
22:00
I eventually came across the greek school's implementation using ltsp-manager, and I'd really like to get that to work.
22:00
<||cw>
might be worth an OS reinstall and start clean with what you learned. I know had to my first couple tries
22:00
<alazyworkaholic>
What files do you have in /etc/dnsmasq.d?
22:01
<||cw>
I don't, I don't have dnsmasq at all. I'm not realy runnign a standard config though
22:01* ||cw has to run
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22:11
<alazyworkaholic>
Turned out that ltsp.conf file was from an earlier attempt (from following this https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP) and I forgot to remove it. Removed it, and now PXE works.
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22:42
<alazyworkaholic>
However, the client boot is still failing with a nbd0 /root issue.
23:26
I'm reading that nbd is an issue an that there are alternatives: nfs or AoE How can I try these? I saw some configuration information about these in /etc/ltsp/update-kernels.conf, but don't know how to select either one.
23:30
<vagrantc>
NFS isn't well supported at the moment
23:40
<alazyworkaholic>
vagrantc: so scratch NFS. What about AoE?
23:41
<vagrantc>
alazyworkaholic: it's less well supported than NBD ...
23:41
alazyworkaholic: i suspect the issues you are reading about might have fixes or workarounds
23:42
<alazyworkaholic>
I was reading https://www.howtoforge.com/using-ata-over-ethernet-aoe-on-ubuntu-12.10-initiator-and-target, but that's ancient and not even about ltsp. I found it hard to find any documentation about AoE. Is there any documentation about AoE?
23:43
*for LTSP?
23:43
<vagrantc>
i don't think so
23:44
you just need to configure AoE however that's done for whatever implementation you choose, and then configure update-kernels.conf to use the correct AOE device
23:45
<alazyworkaholic>
vagrantc: I don't know how to configure update-kernels. :( But I'll give NBD another try with a little help.
23:46
<vagrantc>
alazyworkaholic: what problems are you having with NBD?
23:47
<alazyworkaholic>
NBD didn't work. My client begins to boot, so I think it must have found the linux image, but it then drops to busybox/initramfs, right after I see the line "Begin: Running /scripts/local-block ... done." appear about a dozen times in a row.
23:48
from initramfs, I found nbd[0-15], and "nbd - Live" appears in /proc/modules
23:48
<vagrantc>
alazyworkaholic: and you're using IPAPPEND=3 in update-kernels.conf ?
23:49
<alazyworkaholic>
Earlier on in the boot I saw something about a socket error related to NBD, but it scrolled past before I could copy it down.
23:51
I saw a forum comment about IPAPPEND=3. It told me to modify all 2s to 3s in /var/lib/tftpboot/ltsp/amd64/pxelinux.cfg/default I did so, even though the file says not to edit it directly. Ran /etc/init.d/nbd-server restart. Sill no joy, so I changed it back.
23:53
/etc/ltsp/update-kernels.conf ends with #IPAPPEND=3. Should I uncomment that? If so, how do I update the kernel afterwards?
23:53
<vagrantc>
alazyworkaholic: yes, uncomment it
23:53
though i think the default is IPAPPEND=2, not commented out ... so clearly you've tried that before
23:54
<alazyworkaholic>
ok, uncommented it. How to update kernel?
23:55
<vagrantc>
rebuild the image
23:55
that *should* do it
23:55
<alazyworkaholic>
vagrantc: sorry, but I'm new. what's the command for that?
23:56
<vagrantc>
alazyworkaholic: how did you install? using ltsp-manager? ltsp-pnp? a chroot?
23:57
<alazyworkaholic>
ltsp-manager, I think
23:58
Server -> LTSP Image -> Update?
23:58
<vagrantc>
yes
23:58* vagrantc wouldn't thought ltsp-manager would have set IPAPPEND=3 too ...
23:58
<vagrantc>
would have thought
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