Videos provided by OpenStack Summit via OpenStack Foundation YouTube Channel
High-bandwidth, high-availability server farms present OpenStack with some unique issues as their scale grows. This talk will present some techniques that can allow such installations flexibility in growth and management of their networks to large scale without a concomitant increase in complexity. These aren't solutions for everyone -- they are best suited for a private cloud, with or without a large public-facing surface.
Basic to our approach is the use of topology-based scheduling with clusters spread over multiple layer-2 domains deployed in a regular pattern. On its own this sacrifices flexibility -- IP address mobility isn't readily provided -- but we'll discuss ways of overcoming this deficit through load-balancing, intelligent scheduling, and (optionally) application design. We'll also discuss some data-center management issues (such as maintenance and upgrades) and how they are both impacted and facilitated by these methods.