Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/accurate-capacity-of-clusters-for-scheduler.

Description:


Title: vCenter compute driver and scheduler enhancements to publish and consume cloud capacity of clusters and resource pool

Enhancing the vCenter nova compute driver and nova scheduler to be aware of the resource pools constraints such as resource pool admission control, resource reservation type(Fixed/Expandable). This enhancement will allow the cluster/resource pool modeled as a compute node to publish the available cloud capacity accurately. Accurate cloud capacity will allow for correct metering and monitoring. Further, additional attributes such as the flavor’s permissible for the compute can be made available as part of the compute node details. This will allow the scheduler to make more accurate selection of the compute node where the instance can be provisioned. This will ensure that the instance will be successfully powered up post deployment since it adheres to the admission control policies.

Advantages:
1. Accurate cloud capacity will allow for correct metering and monitoring
2. Accurate data to the scheduler to allow it make more accurate selection of the compute node where the instance can be provisioned
3. Instance will be successfully powered up post deployment due to adherence to the admission control policies

Specification URL (additional information):

None