Open Stack

Hi,

I would like to deploy OpenStack (newton) on multiple management, 
overlay and vlan/uplink l3 networks, thanks to Openstack-Ansible.
In other words, I would like to deploy Openstack on multiple compute and 
controller nodes that are on different subnets, assuming I do the 
routing configuration to permit to management network 1 to communicate 
with management network n, overlay network 1 to overlay network n, 
etc...

I attached a sample schema to illustrate my statement.

To sum up, in this case a compute or controller node which is on 
management network 10.0.1.0/24 via br-mgmt can communicate with br-mgmt 
of another compute node on management network 10.1.1.0/24. The same is 
true from overlay network 10.0.2.0/24 to overlay network 10.1.2.0/24, 
etc...

Am I wrong if I understand that OSA is designed to handle only 1 
mangement subnet, 1 overlay subnet, etc... (storage subnet, ...) ?

During my tests, specifying compute hosts in different networks, in 
openstack_user_config.yml, results in the apparently correct setup of 
the compute host "compute3" (Having previously setup correct static 
route on each hypervisors):

compute_hosts:
   compute1:
     ip: 10.0.1.4
   compute2:
     ip: 10.0.1.5
   compute3:
     ip: 10.1.1.4

However, how to deal with it in cidr_networks: ? (I assume I can't now). 
During my tests, an example of what's lacking was that I had to manually 
configure static routes in the neutron_agents_container lxc provisionned 
by OSA.

Is that kind of deployment possible ? If not possible, is this or could 
this be in the roadmap of the project ?

Thanks,

Benoit Petit


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