在OpenStack實例上創建多個接口

I also follow this link to configure. It is possible to use two NICs on instance.

But when the instance startup, the IPs failed to bind to the NIC. Then I have to login with VNC and bind the IP with each network interface.

I am not sure if I am little late on this. Anyways, I just successfully configured multi interface with ice house and ubuntu 14.04. I am using flatdhcp nova network configuration. Following are the steps.

1. Create 2 n/w using nova network-create command, each with 2 different bridges (say br100 and br101)

2. Then launch an instance attaching these 2 n/w.

3. By default using ubuntu 14.04 cloud image, only eth0 is configured. So image comes up with eth0 having ip address allocated. We see from openstack dashboard that instance has been assigned 2 IPs (one from each n/w) but that is from openstack viewpoint.

4. You can login to this new instance using eth0 ip and key pair. Once you are in, change /etc/network/interfaces to have auto eth1 and iface eth1 inet dhcp. Once you add these 2 lines execute sudo ifdown eth1 && sudo ifup eth1 (note that normal networking restart commands are not functional in 14.04 ) and then you have it :)