Networking Configuration Options

All network-related options specified in /etc/eucalyptus/eucalyptus.conf use the prefix VNET_. The most commonly used VNET options are described in the following table.

Important: If you change the value of in the eucalyptus.conf file, you must restart the Cluster Controller.
Option Description Component
VNET_BRIDGE This is the name of the bridge interface to which instances' network interfaces should attach. A physical interface that can reach the CC must be attached to this bridge. Common setting for KVM is br0.

Node Controller

VNET_DHCPDAEMON The ISC DHCP executable to use. This is set to a distro-dependent value by packaging. The internal default is /usr/sbin/dhcpd3.

Node Controller

VNET_MODE The networking mode in which to run. The same mode must be specified on all CCs and NCs in your cloud.

Valid values: EDGE

All CCs and NCs
VNET_PRIVINTERFACE The name of the network interface that is on the same network as the NCs.

Default: eth0

Node Controller

VNET_PUBINTERFACE This is the name of the network interface that is connected to the same network as the CC. Depending on the hypervisor's configuration this may be a bridge or a physical interface that is attached to the bridge.

Default: eth0

Node Controller