SmartDomains is a tool for automated deployment and management of distributed Xen virtual machines.
Project authors: Olivier Pernet and Xavier Grehant.
Developed as part of Grid IC projects of CERN openlab second phase.
This tutorial: Xavier Grehant (xagATcernDOTch)
In sync with revision 127 (release 0.9.08)
SmartDomains is a showcase of SmartFrog, a framework for distributed configuration and deployment developed at HP Labs.
You should get something like this:
Now your computer is able to deploy and manage descriptions either launched by you locally or communicated by other SmartFrog daemons through port RMI (3800).
A SmartFrog description is the description of a distributed application in SmartFrog language. Common practice is to write it in a set of files with extension .sf. The description given in example can be downloaded here: mgtConsole.sf. Here is the content:
Launching this description will display the management console on the screen (if you have a screen and a window manager on this computer). The description of Compound can be found in file org/smartfrog/components.sf. It is extended here with a new attribute called mngt. mngt is just a name. It links here to another component (DeployManagement) whose description can be found in org/smartfrog/services/management/components.sf. The new extension of Compound is bound here to attribute sfConfig.
Both Compound and DeployManagement components have behaviors: each of them has in its description an attribute sfClass whose value refers to a Java object. Compound's behavior consists in deploying the components given as its attributes. It also manages their lifecycle with the default strategy. Many other components derivate from it and manage different lifecycles for their children. DeployManagement's behavior consists in displaying the management console.
sfConfig is the top attribute of any description. When a description is launched, it is actually the description of sfConfig which is launched.
On another shell:
This means you launch the description in mgtConsole.sf on localhost, and you call console the resulting running application.
The default SmartFrog management console should appear:
The attributes/values displayed here are the default parameters of the deployed management console itself. They come from DeployManagement's description.
If finally you don't want to use this computer as host for Xen virtual domains nor client node for remote deployments, you can stop the daemon.
Everything you did here is powered by SmartFrog tools integrated as is into SmartDomains distribution. SmartFrog is the Java programming framework, the description language, parser, convenience components, scripts, and much more. SmartDomains takes a subset of SmartFrog (the core), builds new components on it to manage Xen virtual domains, and makes the result a standalone project easier to use. In section Describe a pool of virtual domains we get onto SmartDomains specific components.