wiki:Tutorial/HowToSwitch

Version 11 (modified by ssugrim, 7 years ago) ( diff )

Getting Started

  1. Make a reservation

    Wiki page "Tutorial/Documentation/Scheduler" does not exist
  2. Login into reserved domain

    Login into reserved domain

    During your approved time slot, you will be able to ssh into the console of the respective domain. A console is a dedicated machine that allows access to all resources in that domain.

    For example, to access the sandbox1:

    yourhost>ssh username@console.sb1.orbit-lab.org
    
    Using username "username".
    Authenticating with public key "xxxxxxxxx"
    Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-36-generic x86_64)
    
     * Documentation:  https://help.ubuntu.com/
    
      System information as of Mon Jan 28 20:25:50 EST 2013
    
      System load:  0.0               Processes:           93
      Usage of /:   2.7% of 69.43GB   Users logged in:     0
      Memory usage: 6%                IP address for eth0: 10.50.18.10
      Swap usage:   0%                IP address for eth1: 10.18.0.10
    
      Graph this data and manage this system at https://landscape.canonical.com/
    
    9 packages can be updated.
    0 updates are security updates.
    
    |-----------------------------------------------------------------|
    |                 *** For authorized use only ***                 |
    | This system is for the use of authorized users only.  All users |
    | are expected to comply with the "Acceptable Use Policy" availa- |
    | ble at http://www.orbit-lab.org/AUP.html                        |
    | Individuals using this computer system, are subject to having   |
    | all of their activities on this system monitored and recorded   |
    | by system personnel.                                            |
    |                                                                 |
    | Anyone using this system expressly consents to such monitoring  |
    | and is advised that if such monitoring reveals possible         |
    | evidence of criminal activity, system personnel may provide the |
    | evidence of such monitoring to law enforcement officials.       |
    |                                                                 |
    | Email question, comments or problems to help@orbit-lab.org      |
    |-----------------------------------------------------------------|
    
    username@console.sb1:~$ 
    

How to switch On/Off the nodes of a Testbed

To switch some nodes On/Off on the 'grid' testbed, use the command:

omf tell -a on -t all

will turn On the entire set of 20x20 nodes on the grid.

omf tell -a offs -t node3-1.grid.orbit-lab.org,node5-6.grid.orbit-lab.org,node1-1.grid.orbit-lab.org,node1-2.grid.orbit-lab.org

will turn Off (soft, that is attempt a graceful shutdown) the nodes 3,1 and 5,6 and 1,1 and 1,2

omf tell -a offh -t node3-1.grid.orbit-lab.org,node5-6.grid.orbit-lab.org,node1-1.grid.orbit-lab.org,node1-2.grid.orbit-lab.org

will turn Off (hard, that is "hold down" the power button) the nodes 3,1 and 5,6 and 1,1 and 1,2

Learning More

The complete available options for this command is given by "omf help tell":

 user@console.grid:~$ omf help tell
 Switch ON/OFF and reboot the nodes in a testbed
 Usage:
      omf tell -a ACTION [-h] [-t TOPOLOGY] [-c AGGREGATE]
 
      With: 
      -h, --help           print this help message
 
      -a, --action ACTION  specify an action
      ACTION:
      on              turn node(s) ON
      offs            turn node(s) OFF (soft)
      offh            turn node(s) OFF (hard)
      reboot          reboots node(s) (soft)
      reset           resets node(s) (hard)
 
      -c, --config AGGREGATE    use testbed AGGREGATE
      -t, --topology TOPOLOGY   a valid topology file or description (defaults to 'system:topo:all')
 
      Some Examples: 
                    omf tell -a reset
                    omf tell -a on -t system:topo:all -c grid
                    omf tell -a reboot -t omf.nicta.node1
                    omf tell -a offs -t omf.nicta.node1,omf.nicta.node2 -c sb1
                    omf tell -a offh -t system:topo:all
                    omf tell -a reset -t topo_grid_active

Of particular interest is the -t flag which can be used to specify arbitrary topolgies. These can be of the form "nodex1-y1.fqdn,nodex2-y2.fqdn,…"

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