Summary

In this chapter, we looked at some powerful capabilities and additional features brought by the Nova service. You should be acquainted with the vast array of choices given by the latest updates in the compute services – from the variety of supported hypervisor technologies, to compute and workload segregation, to the art of filtering. Scheduling in OpenStack is a key element that cloud operators should pay special attention to when dealing with growing infrastructure and high demand for resources. Although we did not cover all possible scenarios, the filtering mechanism was introduced in the early days of the Nova project, and this chapter demonstrated that an extension to deploy compute power beyond a limited perimeter has since become possible. Thanks to the new, mature version of Nova CellV2, the host aggregation and Availability Zone concepts enable massive deployments if planned and designed properly, as we learned. At the end of the chapter, both Magnum and Zun...