Description of problem:

Deploying Mitaka with rdo-manager does not complete successfully if you don't want to use the first nic until you explicit this in the compute.yaml nic configs:

-
  type: interface
  name: nic1
  use_dhcp: false

Without this even if you have something like this in compute.yaml (That means that everything goes on the second nic):

...
...
            -
              type: ovs_bridge
              name: {get_input: bridge_name}
              use_dhcp: false
              dns_servers: {get_param: DnsServers}
              addresses:
                -
                  ip_netmask:
                    list_join:
                      - '/'
                      - - {get_param: ControlPlaneIp}
                        - {get_param: ControlPlaneSubnetCidr}
              routes:
                -
                  ip_netmask: 169.254.169.254/32
                  next_hop: {get_param: EC2MetadataIp}
                -
                  default: true
                  next_hop: {get_param: ControlPlaneDefaultRoute}
              members:
                -
                  type: interface
                  name: nic2
                  # force the MAC address of the bridge to this interface
                  primary: true
                -
                  type: vlan
...
...

Overcloud deploy will fail. This does not happen in RDO/Liberty.

Version-Release number of selected component (if applicable):

CentOS Linux release 7.2.1511 (Core)
instack-undercloud-3.0.1-dev54.el7.centos.noarch
openstack-tripleo-heat-templates-1.0.1-dev45.el7.centos.noarch

How reproducible:

Configure a network-isolation setup for an overcloud environment in which the first network card is not used for internal communication and try to deploy the overcloud.

Actual results:

Overcloud deploy fails on the compute validation.

Expected results:

Compute validation should succeed.

Additional info:

The network isolation setup that was used in this deployment is explained here https://github.com/rscarazz/openstack/blob/master/ospd-network-isolation-considerations.md