Class WorkerPdsh

source code

ClusterShell pdsh-based worker Class.

Remote Shell (pdsh) usage example:
    worker = WorkerPdsh(nodeset, handler=MyEventHandler(),
                    timeout=30, command="/bin/hostname")
Remote Copy (pdcp) usage example: 
    worker = WorkerPdsh(nodeset, handler=MyEventHandler(),
                    timeout=30, source="/etc/my.conf",
                    dest="/etc/my.conf")
    ...
    task.schedule(worker)   # schedule worker for execution
    ...
    task.resume()           # run

Known Limitations:
    * write() is not supported by WorkerPdsh
    * return codes == 0 are not garanteed when a timeout is used (rc > 0
      are fine)