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*nix Thread, LTSP - stuck at the first post! in Technical; I'm trying to test an ltsp setup to possibly use some old pcs as ubuntu clients - I've installed edubuntu ...
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    Sheridan's Avatar
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    LTSP - stuck at the first post!

    I'm trying to test an ltsp setup to possibly use some old pcs as ubuntu clients - I've installed edubuntu 11.04 onto a server with the LTSP option selected and uninstalled the DHCP part as we have a windows DHCP server.

    On a test client, it gets an address no problem and then times out at the TFTP stage - as a complete newbie to ltsp I'm a bit stuck as to where I should start looking for the problem?

    As the client gets and address I assume that parts ok, it just isn't seeing the server or the server isn't allowing it to connect? We have nothing else on the network that is serving pxe clients (our WDS server is currently 'off')

    Has anyone got any troubleshooting tips for this? I really want to get this working!

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    localzuk's Avatar
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    Have you set up your windows dhcp server to work with the LTSP server?

    https://help.ubuntu.com/community/Ub...TSPWindowsDHCP

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    Sheridan (16th June 2011)

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    Sheridan's Avatar
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    Ah ha - thats gone me a bit further. Now it boots to the login screen on the client.

    It then comes up with 'response from server, restarting' before showing a black screen saying 'Invalid card number'

    Definitely getting somewhere now though.

    Am I getting this right, one of the server NICs has a fixed ip in the same range as the DHCP server, the other NIC is physically on the same network but seems to have given itself a DHCP address (192. etc) - what is the second nic actually doing?

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    localzuk's Avatar
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    The second NIC is doing whatever you tell it to do. Do you need a second NIC?

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    Sheridan's Avatar
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    Erm, I don't really know, its just thats what was recommended in the ubuntu documentation! I'd originally believed the second nic was to serve the clients but I guess not unless they're on seperate networks.

    Its obviously working to a certain degree now as the client gets a login screen, it just can't go any further yet.

    Edit: when I rebuild the client using ltsp-build-client I notice it fails with a 'hash sum mismatch' so I guess the client image isn't being built correctly. I've tried rebuilding several times but get the hash error every time.
    Last edited by Sheridan; 16th June 2011 at 12:47 PM.

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    localzuk's Avatar
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    Sounds like an X server issue to me. I'm not sure how you'd go about fixing this though, its been a long time since i've played with LTSP. May I suggest ubuntuforums.org as a good place to cross post?

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    Quote Originally Posted by Sheridan View Post
    Now it boots to the login screen on the client.
    I had issues getting a bunch of older RM One machines to PXE boot. I seem to remember they had a built-in PXE boot capability which simply conked out half-way through the boot process - I wound up having to boot off floppy drives with gPXE (floppy boot image available from ROM-o-matic.net).

    the other NIC is physically on the same network but seems to have given itself a DHCP address (192. etc) - what is the second nic actually doing?
    The second NIC is supposed to be plugged in to your main network, and should just be a regular network connection, with an IP address from your main DCP server.

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    Sheridan's Avatar
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    I guess the PXE boot part is working ok as the clients get as far as the login - the fact the image build fails might be why it stops there.

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    localzuk's Avatar
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    Quote Originally Posted by Sheridan View Post
    I guess the PXE boot part is working ok as the clients get as far as the login - the fact the image build fails might be why it stops there.
    Indeed, that'll be the cause - you need a working image to get it to work.

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    dhicks's Avatar
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    Quote Originally Posted by Sheridan View Post
    Now it boots to the login screen on the client.
    Sorry, with you now.

    It then comes up with 'response from server, restarting' before showing a black screen saying 'Invalid card number'
    Do you need to find a driver for the graphics card on the client and include that in your boot image?

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    Sheridan's Avatar
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    This is where my newbie status comes in! I didn't think I'd need to muck about with the image at this stage.

    I get the white edubuntu login screen on the client - but I'm not sure how far along the process that means its reached.

    I guess until I fix the image build error I'm stuck.

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    what O/S are you installing LTSP on?

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    localzuk's Avatar
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    Quote Originally Posted by Sheridan View Post
    I'm trying to test an ltsp setup to possibly use some old pcs as ubuntu clients - I've installed edubuntu 11.04 onto a server with the LTSP option selected and uninstalled the DHCP part as we have a windows DHCP server.
    Quote Originally Posted by bart21 View Post
    what O/S are you installing LTSP on?
    See the first post

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    sorry, only scanned it, must have missed that bit

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    Sheridan's Avatar
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    After trying on Ubutunu 10 & 11 and also Edubuntu 11 I've had to give up.

    Whenever I build the client I get a 'hash mismatch error' This occurs no matter how I've built the initial OS (from the alternate CD, or by manually installing ltsp on top of a OS install)

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