Before an operating system is installed on the virtual machine, it is a good idea to configure the virtual network interfaces available to the machine through the following steps:
In VirtualBox Manager, choose the virtual machine and click on the Settings icon. A window will appear that defaults to the General settings:
Figure B.15
Click on the Network icon to modify the network interfaces presented to the virtual machine. The first adapter available, Adapter 1, should be enabled and attached to the
vboxnet0host-only network that was created earlier:
Figure B.16
Adapter 2 should be enabled and attached to the internal network named
overlay. Internal networks can be specified in the free-form text box labeled Name:
Figure B.17
Adapter 3 should be enabled and attached to the
vboxnet1host-only network created earlier. The Promiscuous Mode setting should be changed toAllow Allin order to support 802.1q VLAN tagging between the virtual machines:
Figure B.18
Adapter 4 should be enabled and attached to the NAT network:
Figure B.19
Note
By default, VirtualBox provides a NAT network that allows virtual machines to use the host machine for outbound network access. This network is required for the virtual OpenStack infrastructure nodes to download the OpenStack software. The NAT network is a DHCP network that provides the virtual machines with an IP address and default route through the host machine.
Click on the OK button to complete the network adapter configuration process and close the settings window.
Repeat these steps as necessary to configure additional virtual machines.