Changes between Version 13 and Version 14 of OldFeddAbout

Timestamp:

Jun 6, 2010 7:27:28 AM (14 years ago)

Author:

faber

Comment:

--

OldFeddAbout

@@ -404 +404 @@
 The red nodes are the connector nodes inserted by `fedd`.  They both transfer experimental traffic verbatim and tunnel services, like a shared filesystem.  Exactly what gets tunneled and how the connections are made is a function of the federation kit, the topic of the next section.
 
+= Experiment Services =
+
+An important part of the cohesive experiment framework created by the DFA is the web of services interconnecting the sub experiments.  A service, in this context, is fairly liberally defined; it is any one of several pre-defined ways of sharing information statically or dynamically between sub-experiments.  Static information includes the accounts to create on various machines or the hostnames to export to sub-experiments.  Dynamic information includes mounting filesystems or connecting user experiment tools, like [http://seer.isi.deterlab.net SEER].
+
+Each service has an ''exporter'' the testbed that provides the service, and zero or more ''importers'', testbeds that use the information.  In addition, services can have attribute/value pairs as parameters.
+
+The specific services currently supported by fedd are:
+
+ '''hide_hosts'''::
+ By default, all hosts in the topology are visible across the experiment.  This allows some hosts to be completely local.  The hosts chosen are given by the hosts attribute.
+ '''local_seer_control'''::
+ Adds a local seer control node to sub-experiments in the exporting testbed.
+ '''project_export'''::
+ Exports the user configuration and filesystem named by the project attribute to the importing testbeds
+ '''seer_master'''::
+  Adds a second seer controller to the exporting testbed that is capable of aggregating the inputs from several local seer masters.  To create a seer instance that sees several sub experiments, create a local_seer_control in each and export a seer_master to all.
+ '''SMB'''::
+  Export a set of SMB/CIFS filesystems.
+ '''userconfig'''::
+  Export the account information from a given project or group.  Currently accepts the project attribute for that purpose.
+
+Service advertisement, provision, and specification is an ongoing area of research in federation, and we expect these specifications to become more detailed and useful as that research progresses.
+
 = The Federation Kit =