4.1. Networks, Subnets, VLANs and Interfaces

Rocks uses a SQL database to hold information about nodes including network device information. In version 5.1 support was added for VLAN tagged interfaces to enable construction of virtual clusters and other more complicated network scenarios. There are a large number of commands that allow manipulation of subnet definitions, physical interfaces, and logical VLAN interfaces.

The basic model of operation is for an administrator to use a series of commands to add and set/change networking definitions in the database and then either re-install a node or reconfigure/restart the network configuration by calling rocks sync config <host>.