Changes between Version 9 and Version 10 of GiB-tips

10/17/12 09:28:34 (9 years ago)



  • GiB-tips

    v9 v10  
    1 = GENI-in-a-Box Tips =
    3 == 1 Creating additional user accounts ==
    4 GENI-in-a-Box creates an account for user 'gibuser' (your username on GENI-in-a-Box) on the virtual machines created for your slice.  You can add additional accounts on these virtual machines; the following steps show how you can add an account for user 'chris':
    5      1. Create a public-private key-pair for Chris using the command {{{ssh-keygen -t rsa}}}.  The public key created ({{{}}}) must be moved to the directory {{{~/.gcf}}} and the private key to {{{~/.ssh}}}.  In the example below we used an empty passphrase i.e. hit <return> on the prompt for a passphrase.
    6 {{{
    7 $ ssh-keygen -t rsa
    8 Generating public/private rsa key pair.
    9 Enter file in which to save the key (/home/gibuser/.ssh/id_rsa): chris
    10 Enter passphrase (empty for no passphrase):
    11 Enter same passphrase again:
    12 Your identification has been saved in chris.
    13 Your public key has been saved in
    14 The key fingerprint is:
    15 26:1a:48:91:bb:94:82:b3:83:ea:4e:e2:f7:95:00:08 gibuser@GiB
    16 The key's randomart image is:
    17 +--[ RSA 2048]----+
    18 |E ..             |
    19 |. o.             |
    20 |...+             |
    21 |+.+..            |
    22 |.=..... S        |
    23 |+ .  o.o.        |
    24 |oo  .  o         |
    25 |=  .  .          |
    26 |o+. ..           |
    27 +-----------------+
    28 $ mv ~/.gcf
    29 $ mv chris ~/.ssh
    30 $
    31 }}}
    33      2.  Make the following changes to the file {{{~/.gcf/omni_config}}}:
    34          1. Look for the string {{{users =}}} in the file {{{~/.gcf/omni_config}}} and add Chris to the list of users:
    35 {{{
    36 users = Gibuser, Chris
    37 }}}
    38          2. Look for the section {{{# Define users here}}} and add the following lines to that section:
    39 {{{
    40 [Chris]
    42 keys=~/.gcf/
    43 }}}
    46 == 2. Copying files to/from GENI-in-a-Box and your computer ==
    47 '''GENI-in-a-Box Ubuntu flavor''': You can use !VirtualBox shared folders to copy files to/from GENI-in-a-Box.  See for instructions.
    49 '''GENI-in-a-Box Fedora flavor''': At this time !VirtualBox shared folders do not work with GENI-in-a-Box.   If you are running on Mac OS or Linux, you can scp from Geni-in-a-Box to your computer to copy files to and from GENI-in-a-Box and your computer.  If you are on Windows you will need to install and run the ssh daemon on your computer before you can use scp to it from GENI-in-a-Box.
    51 == 3. Suspending and resuming your GENI-in-a-Box session  ==
    52 You can suspend your GENI-in-a-Box session by ''hibernating'' your GENI-in-a-Box virtual machine.   This will save the state of the virtual machine on disk and will allow you to resume your work the next time you start up !VirtualBox.
    53   * To hibernate a virtual machine running Fedora, click on the logged-in user's name on the top right of the GENI-in-a-Box screen and select {{{shutdown}}} from the drop-down menu.  You will now be presented with a number of {{{shutdown}}} options including {{{hibernate}}}.  Click on {{{hibernate}}}.
    54   * To hibernate a virtual machine running Ubuntu, click on the ''power'' button icon on the top of the GENI-in-a-Box screen and select {{{hibernate}}} from the drop-down menu.
    55 Virtual machines that have been hibernated show up as {{{Powered Off}}} in the Oracle VM !VirtualBox Manager window.  To restart the virtual machine, select it in the !VirtualBox Manager window and click the green arrow labeled {{{Start}}}. 
    57 == 4 Special files installed on each node in a slice ==
    58 The GENI-in-a-Box aggregate follows the ProtoGENI model of installing on each node in the slice files with information that might be useful to the experimenter.  Specifically:
    59    *  The manifest rspec is available in all the experimenter nodes at {{{/prof/<slicename>/tbdata/geni_manifest}}}.
    60    *  The fully qualified name of the node is available in {{{/var/emulab/boot/nickname}}}.  An example of a fully qualified node name is {{{}}} where {{{myslice}}} is the name of the slice.
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