OpenStack for Architects - Second Edition

Planning your city

Very similar to civil planning and architecture, the OpenStack cloud is a city of tenants that require resources to exist. However, with limited resources, tenants cannot be left to self- manage; the risk of resource exhaustion is too great. This would be analogous to the residents of an apartment building having unlimited power, water, gas, cable, and space without metering or charging for anything. Many residents would probably operate under the assumption that the resources were unlimited and they could oversize and oversubscribe to everything without consequence. Therefore, it is up to operations, both in civil engineering and OpenStack clouds, to do capacity management and risk mitigation for the end user. This means ...