IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 18 September 2015 (all times are UTC)
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| 04:24 | <fnurl> apparently i fell off
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| 04:24 | :/
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| 04:24 | maldridge: the link you posted a couple of days ago (https://help.ubuntu.com/community/UbuntuLTSP/ProxyDHCP) is super handy
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| 04:25 | i had stumbled across it before, but, i didn't appreciate it fully (i was looking for something else)
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| 04:52 | work_alkisg is now known as alkisg | |
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| 05:08 | <alkisg> fnurl: the instructions there are very outdated though, most of them are not needed anymore...
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| 05:10 | <fnurl> i was wondering how it would change for new versions
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| 05:10 | <alkisg> The ltsp-pnp page does have updated instructions, but it also does more things...
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| 05:10 | You can find the commands like e.g. ltsp-config dnsmasq there
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| 05:10 | !ltsp-pnp
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| 05:10 | <ltsp> ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
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| 05:11 | <fnurl> i like the sound of that
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| 05:12 | not having to deal with chroot would be a real boon
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| 05:12 | <alkisg> If ltsp-pnp suits your needs, it's the easiest way to maintain ltsp
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| 05:12 | <fnurl> atm, i need to decide on full fat LTSP/Edubuntu vs the pinet we were going with
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| 05:12 | the deployment last weekend failed
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| 05:13 | <maldridge> fnurl: imho you should use ltsp with berryterminal if you want pi stuffs
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| 05:14 | * alkisg would stay away from PIs due to their low specs... | |
| 05:14 | <alkisg> It depends on your requirements though
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| 05:15 | <fnurl> yeah, i understand the concern, the school owner has bought them already - so I'm kinda committed to that path, at least for the time-being
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| 05:15 | <alkisg> Which version, 1 or 2?
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| 05:15 | <fnurl> where the ltsp-pnp is x386, I'
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| 05:15 | <alkisg> And how many?
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| 05:16 | <fnurl> I'm assuming the clients can't be AMP/Pi, or I have to use the chroot again
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| 05:16 | <alkisg> You can easily use ltsp-pnp with arm, just install ltsp on a pi itself
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| 05:16 | <fnurl> new pi, version 2
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| 05:16 | 10 bought and paid for, with cases, etc etc
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| 05:16 | oh hey - that's a very cool idea
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| 05:16 | <alkisg> Do you have a server?
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| 05:17 | <fnurl> we have a QNAP NAS hosting a Virtual Machine as the server
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| 05:18 | <alkisg> Does that mean that it has a good cpu as well? How much would you rate it with cpubenchmark.net points?
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| 05:18 | E.g. for thin clients here, I'm using servers with 5000+ points in cpubenchmark...
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| 05:18 | <fnurl> the server we have atm is for testing and development, it will be an i7 16GB RAM in the very final deployment
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| 05:19 | <alkisg> OK, so it would be better if ltsp-update-image was running on that, instead of on a pi
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| 05:19 | <fnurl> https://www.qnap.com/i/en/product/model.php?II=160&event=2
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| 05:19 | ^^ that will be the final server
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| 05:19 | <alkisg> For the testing phase, create a template pi client the way you want it, without concerning yourself with ltsp
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| 05:19 | Then, install ltsp-pnp on it, and run ltsp-update-image
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| 05:20 | You can even use the pi as the server while testing,
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| 05:20 | but in the end, you'll need to transfer the resulting image to your real server
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| 05:20 | Either manually (fetch the SD card of the pi, put it to the server, run ltsp-update-image there, etc etc), or automatically, via an NFS mount etc
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| 05:21 | You can also copy the image into a chroot if you want to abandon the ltsp-pnp method later on
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| 05:21 | So basically what I'm saying is that you never need to run ltsp-build-client
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| 05:21 | * maldridge votes the nfs route, sd cards burn out easy doing disk intensive stuff | |
| 05:22 | <alkisg> The sd card would only be used when the template client needs updating, to boot the pi with it, to run apt-get update etc
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| 05:22 | <fnurl> yeah, i was surprised when I learned pinet created fat clients
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| 05:22 | <alkisg> fat clients and thin clients can be served from the same chroot
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| 05:22 | <fnurl> so hey - where you say create the pi client
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| 05:23 | our pi client was basically automatically created for us, all we did was uninstall a few things, and install libre office
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| 05:23 | <alkisg> How? Using pinet or some other method?
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| 05:24 | <fnurl> we installed pinet, used pinet to install libre office, then I manaually removed minecraft etc
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| 05:24 | rebuilt the image, and it was all good (until they stopped connecting)
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| 05:24 | but I was comfortable to go into the chroot, and install/uninstall
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| 05:25 | <alkisg> If you already have an image that works for you, then you don't need to change your method, you only need to troubleshoot the issue at hand
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| 05:25 | <fnurl> we did clone a user in the server image also, we were looking to create two types of users with different access to shares
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| 05:26 | yeah - we have an image that was working - i'm not sure where the connection issue arose
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| 05:26 | <alkisg> You can ask here if you want to troubleshoot it
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| 05:27 | <fnurl> the owner has said I can abandon the pinet solution and aim for the LTSP proper if needs be, personally, I'd rather not .... not yet anyways
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| 05:27 | thanks for the advide though guys, much appreciated
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| 05:27 | <alkisg> pinet is just a few scripts on top of vanilla ltsp, isn't it?
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| 05:27 | <fnurl> honestly, i'm not sure how to phrase the question
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| 05:28 | we did the testing, all was good, literally everything was happy
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| 05:28 | <alkisg> "my clients stopped booting; the last message I see is tftp timeout" or something like that would be a good start
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| 05:28 | <fnurl> we moved the server to cabinet, and the pis to their desk, and the pi's wont connect to the server anymore
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| 05:28 | k, i'll try and get a screen shot of the failure to connect
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| 05:29 | I think pinet is as you describe, just a few scripts
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| 05:29 | the server is on a network with a router, so I assume pinet has removed the DHCP
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| 05:29 | <alkisg> Don't assume, check
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| 05:30 | see if you have isc-dhcp-server installed
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| 05:30 | <fnurl> fair, will do
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| 05:30 | logging in now, 1s
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| 05:32 | PiNet server is by default completely passive on a network. It does not include a DHCP server. It just Raspberry Pis to be able to connect to it.
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| 05:32 | <alkisg> So you have to put the server IP on each one of the clients, in a .txt file or so?
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| 05:33 | <fnurl> when i rebuild the image, it presents the option to update the IP address of the server
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| 05:34 | <alkisg> But what gets written to the sd card of the clients?
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| 05:34 | <fnurl> in the router I fixed the IP address of the server
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| 05:34 | <alkisg> The whole image?
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| 05:35 | <fnurl> it creates a folder called piboot - 25~ files around 20MB
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| 05:35 | i can do an ls
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| 05:35 | <alkisg> Sure, that'd clear up some things
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| 05:36 | But when you do change the server ip, or update the kernel, then you need to update the sd cards as well, right?
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| 05:37 | <fnurl> at the moment yes - we're using the NBD
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| 05:38 | <alkisg> NBD is used with diskless clients, so it doesn't make sense to say that you use NBD _and_ that you need to update the SD cards
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| 05:40 | <fnurl> sorry, there are two option NBD and NFS, we're on the one that requires the recompression and SD juggling
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| 05:40 | http://i.imgur.com/rrrMVDQ.png
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| 05:40 | <alkisg> Yes, those two methods (and a third one called AoE) are supported by vanilla ltsp
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| 05:41 | fnurl: what are the contents of cmdlineNBD.txt?
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| 05:42 | <fnurl> http://i.imgur.com/6U3g19N.png
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| 05:43 | <alkisg> fnurl: and 1.1.1.1 is the ip of your server, and if you need to change it you have to update that file?
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| 05:43 | <fnurl> apols for imgur spam, but I don't have clipboard sync
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| 05:43 | the server should be 10.10.10.6
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| 05:43 | i'm not sure why that hasn't updated when I updated the image
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| 05:43 | :/
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| 05:44 | let me run the update image thing now, and see if it changes
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| 05:44 | <alkisg> Maybe that's why your clients aren't booting then?
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| 05:44 | <fnurl> you may have made my day (again!)
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| 05:44 | <alkisg> I think gbaman is the person that maintains pinet, he might be able to help you
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| 05:44 | <fnurl> very very cool to know
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| 05:44 | seriously thank you
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| 05:44 | <alkisg> np
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| 05:45 | <fnurl> i wanted to ask about creating a second jail
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| 05:45 | let me get this bit nailed first
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| 05:58 | <fnurl> odd, i just recompressed the image, then did the update image, and it kept the 1.1.1.1
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| 05:59 | i've manually changed it to 10.10.10.6
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| 05:59 | <alkisg> By running things on your server, the client SD cards don't get updated
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| 05:59 | <fnurl> i'll ask the headmaster to stick in the SD card in a moment
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| 05:59 | <alkisg> I believe there's some extra steps for updating the SD cards
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| 05:59 | Vanilla LTSP doesn't have that step, so it's not ltsp-update-image etc
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| 06:00 | <fnurl> ahh, k
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| 06:00 | http://i.imgur.com/1Mvg1SS.png
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| 06:01 | <alkisg> And you're supposed to put the SD cards on the server, one by one?
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| 06:01 | <fnurl> thats the admin interface, i hit that, it presents the option to keep the IP address, then I have to copy the folder contents to each SD card
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| 06:01 | yeah, it's a lengthy process
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| 06:01 | <alkisg> It should use dhcp... :)
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| 06:01 | <fnurl> if we were using the alternative network option, we'd not have to do that
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| 06:02 | dhcp would be lovely
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| 06:02 | <alkisg> PIs might not be able to do PXE, but it shouldn't be hard to do the dhcp request inside the initramfs
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| 06:02 | <fnurl> if you've got a couple of minutes - can I PM you?
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| 06:02 | <alkisg> OK
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| 08:56 | <daysleeper83> Hey there, i just wanted to install ltsp by using the pnp solution
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| 08:57 | however when i run the command ltsp-update-image -c /
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| 08:57 | i get the error "overlayfs: missing upperdir or lowerdir or workdir"
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| 08:57 | System is Ubuntu 14.04.3
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| 08:58 | thanks for any help
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| 09:03 | <Hyperbyte> daysleeper83, the ltsp-pnp wizard (alkisg) isn't here right now... but he'll be able to tell you definitively what's going on.
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| 09:04 | My guess would be there's something wrong with the directory /opt/ltsp/
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| 09:04 | You are running the command as root? With sudo, for example?
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| 09:07 | <daysleeper83> running as root
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| 09:07 | seems like some overlayfs options have changed with kernel 3.19
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| 09:10 | ill wait for alkisg
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| 09:20 | <work_alkisg> daysleeper83: ah, I haven't published the change to the ppa, only to the proposed ppa, wait a moment...
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| 09:22 | daysleeper83: I scheduled the copying, in a few minutes if you run apt-get update etc you'll receive an update the fixes the issue
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| 09:23 | (assuming you have the greek schools ppa in your sources)
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| 09:23 | <daysleeper83> thank you very much
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| 09:24 | yes i have
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| 09:24 | <work_alkisg> The build process is shown there: https://launchpad.net/~ts.sch.gr/+archive/ubuntu/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=trusty
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| 09:24 | ...pending for now
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| 09:37 | <daysleeper83> works now
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| 09:38 | thanks 4 your help
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| 09:41 | <Hyperbyte> !alkisg
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| 09:41 | <ltsp> alkisg: The LTSP oracle. Our beacon of hope in the world of LTSP. With the guidance of this divine emperor, we shall prevail.
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| 09:41 | <work_alkisg> !Hyperbyte
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| 09:41 | <ltsp> Hyperbyte: We all thank our super duper webadmin for his contributions... er, also, reminder: make the irclogs.ltsp.org banner scrollable to save screen estate for mobile phones :D
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| 09:41 | <work_alkisg> hahaha
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| 09:41 | <work_alkisg> OK we need to remove that reminder :D
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| 09:41 | <Hyperbyte> daysleeper83, please pay appropriate tribute to the oracle alkisg.
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| 09:42 | <daysleeper83> !alkisg
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| 09:42 | <ltsp> alkisg: The LTSP oracle. Our beacon of hope in the world of LTSP. With the guidance of this divine emperor, we shall prevail.
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| 09:57 | <Hyperbyte> It is good. :-)
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| 17:57 | <alkisg> vagrantc: do you think it's time to release ltsp 5.5.5?
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| 17:57 | Version 5.5.4 Vagrant Cascadian ltsp-5.5.4 2014-10-22
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| 17:57 | It's been a year...
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| 17:57 | ...and 55 commits since
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| 18:03 | <work_alkisg> It's too late for Wily though (debian import freeze was on August 20th), unless stgraber wants to do a manual sync, since recent commits solve grave bugs with overlayfs in recent kernels...
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| 18:04 | Especially r2661 is very important, Wily LTSP shouldn't be left without that one
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| 18:08 | <vagrantc> work_alkisg: yeah, I was hoping to do that soon.
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| 18:09 | work_alkisg: there was at least one ugly issue with the patch I merged from phantomas regarding ltsp-config and ltsp-update-image interaction
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