wiki:GeniDesktop/Manual/init

Version 4 (modified by Hussamuddin Nasir, 5 years ago) (diff)

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Initializing a Slice

What does Initialize mean?

In order to use the basic functionality of the GeniDesktop, the GeniDesktop must install and configure the Global Node (GN) -- which you added at slice creation time. In particular, it must:

  • Install and configure software on the GN such as the apache webserver, a mysql server, etc.
  • Generate ssh keys dynamically on the Global Node, and then distribute the public key to the other nodes in the slice so that they can be controlled/monitored by the GN.
  • Install software called Shellinabox on the Global Node which is used as a proxy to provide web-based ssh access to all other nodes in your slice.
  • Setup the necessary authentication/authorization in order to access the the above-mentioned services.

Why is Initialize Needed?

The Initialization Phase is required for the GENIDesktop to setup some basic infrastructure for it to communicate with a user's slice. GENI Slice used at the GENIDesktop will be auto-initialized without any user interaction.


Instrument your Slice

What does Instrumentize mean ?

Once a user's experiment is running, he/she may want to collect statistics (system/network). The statistics are collected passively from the nodes. Passive measurements may include, monitoring the traffic flow on links/nodes, system statistics like CPU and Memory monitoring, monitoring of system processes, IP tables and routes where in no data is actually sent through your nodes/link. All data collected is from the activity being performed by you or the Testbed on your nodes. The Instrumentation Phase involves installing a lot of software on your nodes including the global node.

Why is Instrumentize Needed?

Once instrumentized, you can use the full capability of the !GENIDesktop. This includes viewing network and system graphs, tabular data collected from your nodes, and reconfiguring the data you want collected and displayed. You also now have the ability to archive your data to your Irods account created at the GeniPortal. Once instrumentized, there will be additional data collection routines and daemons running on your nodes. The additional system and memory load should be minimal though and should not affect the performance of your nodes. You should also be able to use features you had when you initialized your slice. All slices are automatically instrumentized when using the GENIDesktop.


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