We are trying to use the FlatDHCP network model in multi_host mode. Getting things to boot and establishing *outbound* connectivity has been relatively simple. Systems come up, pull an address from the local dnsmasq process running on the compute host, and all traffic is routed out public_interface via an iptables SNAT rule.
E.g., http://www.referencearchitecture.org/network-design/ For outbound access, it's not clear why the flat_network_bridge needs to be connected to an actual physical interface...since everything goes out public_interface, I'm not sure what flat_interface is for. It's also not clear how inbound access is supposed to work. Guest interfaces get addresses, but due to the NAT rule these are mostly inaccessible to external systems. The guests are on a locally routeable 10.x.x.x network, but the routing established by OpenStack means that any inbound connections from outside the network will result in replies going out via the SNAT rule, which means connections are never established. I've had a hard time finding documentation that shows a complete example of this configuration, and what I have found (like the picture above) only seems to answer the outbound half of the question. Any pointers would be greatly appreciated. Thanks, -- Lars Kellogg-Stedman <[email protected]> | Senior Technologist | http://ac.seas.harvard.edu/ Academic Computing | http://code.seas.harvard.edu/ Harvard School of Engineering and Applied Sciences | _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
