OpenStack Compute (nova)

Instance assigned same ip as nova-compute node

Asked by Tom Ellis

I've created a three node setup with nova-compute on two nodes and other nova-* services on the other.

nova-* running on 192.168.3.1
nova-compute-1 running on 192.168.3.2
nova-compute-2 running on 192.168.3.3

I'm using the default vlan networking mode and created my network range with:
sudo nova-manage network create 192.168.3.0/24 1 256

When I run the first instance, I noticed it takes IP, 192.168.3.3, the one used my by second compute node, subsequent instances take IP addresses higher than this and launch correctly.

network netmask start address DNS
192.168.3.0/24 255.255.255.0 192.168.3.3 None

How do I change this start address? seems a bit strange that it's .3, I need that to be .4

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Tom Ellis (tellis) said : 		#1

I realised in vlan mode in cactus, my nodes don't need addresses on the private network and the nova-network node gets a bridge automatically configured.