Community-Lab introduction

Modified script.txt from [9d4bab6741] to [dba7698cbe].

   163    163   that can be used to study the testbed itself, or to implement external
   164    164   services like node monitoring and selection.
   165    165   
   166    166   ** An example experiment
   167    167   # Event diagram, hover over components explained.
   168    168   To show how the testbed works: two slivers which ping each other.
   169    169   
   170         -1. The researcher first contacts the server and creates a slice description
          170  +1. The researcher first contacts the server and registers a slice description
   171    171      which specifies a template for slivers (e.g. Debian Squeeze) and includes
   172    172      data and programs to setup slivers and run experiments.
   173    173   2. This and all subsequent changes performed by the researcher are stored in
   174    174      the registry, which holds the config of all components in the testbed.
   175         -3. The researcher chooses two nodes and adds sliver descriptions for them in
   176         -   the previous slice.  Each one includes a public interface to the CN.
          175  +3. The researcher chooses two nodes and registers sliver descriptions for them
          176  +   in the previous slice.  Each one includes a public interface to the CN.
          177  +   The researcher tells the server to instantiate the slice.
   177    178   4. Each of the previous nodes gets a sliver description for it.  If enough
   178    179      resources are available, a container is created by applying the sliver
   179    180      configuration over the selected template.
   180    181   5. Once the researcher knows that slivers have been instantiated, the server
   181    182      can be commanded to activate the slice.
   182    183   6. When nodes get instructions to activate slivers they start the containers.
   183    184   7. Containers execute the setup and run programs provided by the researcher.

Modified slides.svg from [c5240c7153] to [0a223832f7].

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