Configuring Additional Ethernet Interfaces

5.3. Configuring Additional Ethernet Interfaces

For compute nodes, Rocks uses the first ethernet interface (eth0) for management (e.g., reinstallation), monitoring (e.g., Ganglia) and message passing (e.g., MPICH over ethernet). Often, compute nodes have more than one ethernet interface. This procedure describes how to configure them.

Additional ethernet interfaces are configured from the frontend via a command line utility named add-extra-nic. It manipulates the networks table on the frontend to add information about an extra interface on a node (a description of the networks table can be found in Rocks Cluster Schema) This program just manipulates the database. It does nothing to the actual configuration of a running node.

Once you have the information in the networks table, every time you reinstall, the additional NIC will be configured.

The structure supports multiple additional interfaces/node.