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What do we do when we have a cloud-dedicated hardware server and we need it to provide service to both cloud realm & the internet? Ideas: * allocate a public IPv4 subnet behind cloudgw and have a NIC on the cloud-dedicated servers be on this subnet. How to do load-balancing then? * Use neutron VIP as load balancer * Use cloudgw to NAT to private cloudswift subnet * Run your own LVS * BGP to advertise IP, have VLAN terminate on cloudsw and not cloudgw This also means extending or better shaping https://wikitech.wikimedia.org/wiki/Cross-Realm_traffic_guidelines#Case_4:_using_isolation_mechanisms

What do we do when we have a cloud-dedicated hardware server and we need it to provide service to both cloud realm & the internet? Ideas: * allocate a public IPv4 subnet behind cloudgw and have a NIC on the cloud-dedicated servers be on this subnet. How to do load-balancing then? * Use neutron VIP as load balancer * Use cloudgw to NAT to private cloudswift subnet * Run your own LVS * BGP to advertise IP, have VLAN terminate on cloudsw and not cloudgw ** https://wikitech.wikimedia.org/wiki/Anycast This also means extending or better shaping https://wikitech.wikimedia.org/wiki/Cross-Realm_traffic_guidelines#Case_4:_using_isolation_mechanisms

What do we do when we have a cloud-dedicated hardware server and we need it to provide service to both cloud realm & the internet? Ideas: * allocate a public IPv4 subnet behind cloudgw and have a NIC on the cloud-dedicated servers be on this subnet. How to do load-balancing then? * Use neutron VIP as load balancer * Use cloudgw to NAT to private cloudswift subnet * Run your own LVS * BGP to advertise IP, have VLAN terminate on cloudsw and not cloudgw ** https://wikitech.wikimedia.org/wiki/Anycast This also means extending or better shaping https://wikitech.wikimedia.org/wiki/Cross-Realm_traffic_guidelines#Case_4:_using_isolation_mechanisms