Virtual Machine Network Profiles¶

Salt Virt allows for the network devices created for deployed virtual machines to be finely configured. The configuration is a simple data structure which is read from the config.option function, meaning that the configuration can be stored in the minion config file, the master config file, or the minion's pillar.

This configuration option is called virt.nic. By default the virt.nic option is empty but defaults to a data structure which looks like this:

virt.nic:
  default:
    eth0:
      bridge: br0
      model: virtio

This configuration sets up a network profile called default. The default profile creates a single Ethernet device on the virtual machine that is bridged to the hypervisor's br0 interface. This default setup does not require setting up the virt.nic configuration, and is the reason why a default install only requires setting up the br0 bridge device on the hypervisor.

virt.nic:
  dual:
    eth0:
      bridge: service_br
    eth1:
      bridge: storage_br
  single:
    eth0:
      bridge: service_br
  triple:
    eth0:
      bridge: service_br
    eth1:
      bridge: storage_br
    eth2:
      bridge: dmz_br
  all:
    eth0:
      bridge: service_br
    eth1:
      bridge: storage_br
    eth2:
      bridge: dmz_br
    eth3:
      bridge: database_br
  dmz:
    eth0:
      bridge: service_br
    eth1:
      bridge: dmz_br
  database:
    eth0:
      bridge: service_br
    eth1:
      bridge: database_br