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