Port Configuration
------------------------------

Savanna requires the following network ports to be open:

*  Port 22 (UDP and TCP)
   Required for communication between Savanna and virtual machines. Savanna doesn't support security groups.

*  Port 8080 (UDP and TCP)
   Required for the HDP plugin.

*  Port 50070 
   Required for NameNode.

*  Port 50030
   Required for JobTracker.

*  Port 80 (UDP and TCP)
   Open this port to enable communication with the Ambari console. Required if you use the HDP plugin.

*  Verify that communication between virtual machines that use Savanna is enabled.
 
.. note:: Savanna uses floating IPs to access and configure virtual machines. If you use 
Neutron or nova-network with disabled IP auto assignment, then you must specify the
network that Savanna will use to assign floating IPs for every Hadoop cluster launch. (This is confusing. Do you need to assign network every time the Hadoop cluster starts or for every Hadoop cluster started for the first time?)