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I think your first approach was good. The only thing I could suggest you to think of is the architecture; if you read this section of the guide, think your architecture as composed by one node only, containing all services and the network configuration of the network node (3 interfaces).

If you do not have 3 physical interfaces you could manage to use IP aliasing. So your external network corresponds to XXX.YYY.174.128/27, and your management one to 192.168.174.0/24. So you must have such a configuration.

When you create your external network in openstack you must set the gateway as your REAL gateway (the one you usually use).

I think your first approach was good. The only thing I could suggest you to think of is the architecture; if you read this section of the guide, think your architecture as composed by one node only, containing all services and the network configuration of the network node (3 interfaces).

If you do not have 3 physical interfaces you could manage to use IP aliasing. So your external network corresponds to XXX.YYY.174.128/27, and your management one to 192.168.174.0/24. So you must have such a configuration.. ---> example

When you create your external network in openstack you must set the gateway as your REAL gateway (the one you usually use).

I think your first approach was good. The only thing I could suggest you to think of is the architecture; if you read this section of the guide, think your architecture as composed by one node only, containing all services and the network configuration of the network node (3 interfaces).

If you do not have 3 physical interfaces you could manage to use IP aliasing. So your external network corresponds to XXX.YYY.174.128/27, and your management one to 192.168.174.0/24. So you must have such a configuration. ---> example

When you create your external network in openstack you must set the gateway as your REAL gateway (the one you usually use).use). The corresponding command should be:

neutron subnet-create ext-net --name ext-subnet --allocation-pool start=XXX.YYY.174.140,end=XXX.YYY.174.150   --disable-dhcp --gateway XXX.YYY.174.129 XXX.YYY.174.128/27

This command should give you 11 floating ips (140-150), be sure XXX.YYY.174.129 is your real gateway.