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Learning OpenStack High Availability by Rishabh Sharma

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Chapter 6. Distributed Networking

OpenStack networking services are the most difficult to scale and render highly available. This chapter will delve into the details of the Neutron Distributed Virtual Routers (DVR), multiple L3 agents in active/passive configuration, and third-party networking drivers that offer high availability options.

The DVR architecture expands the heritage architecture by giving direct connectivity to other external networks on compute nodes. Floating IP address-enabled instances route between project and external networks, live on the compute nodes to eliminate a single point of failure, and solve performance issues with heritage network nodes.

With a fixed or floating IP address, the routing also exists completely on the ...

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