Hello all,

I am setting up an openstack cloud with legacy nova network. I have the following setup,

1) Controller (1 NIC card with the follwing network configuration)

auto lo
iface lo inet loopback

iface eth0 inet static
address 192.168.30.2
network 192.168.30.0
netmask 255.255.255.0
broadcast 192.168.30.255
gateway 192.168.30.1

2) On the compute node, I have two NICs (eth0 and eth1)

auto lo
iface lo inet loopback

iface eth0 inet static
address 192.168.30.3
network 192.168.30.0
netmask 255.255.255.0
broadcast 192.168.30.255
gateway 192.168.30.1

Question; I got several errors while trying to launch an instance. The errors happening after trying to set the gateway on the VM and the readable error is "Device not found". I am guessing that it is due to the fact that I have not setup the bridge. Can anyone guide me that how the network configuration should look like after the bridge has been setup. Below is my relevant nova network config;

network_manager=nova.network.manager.FlatDHCPManager
network_size = 254
allow_same_net_traffic = False
multi_host = True
send_arp_for_ha = True
share_dhcp_address = True
force_dhcp_release = True
flat_network_bridge = br100
flat_interface = eth1
public_interface = eth1

I will appreciate the help.