Hello, As part of the ceilometer project¹, we're working on retrieving usage data from various OpenStack components. We would like to integrate with Quantum for information about network resource utilization that a deployer might want to bill their tenants for.
Ceilometer has a plugin-based architecture, which makes it easy to add new measurement types and data collectors. Our approach with other measurements is to collect everything and let the ceilometer user decide what to bill for and what to ignore (they can turn off measurements for things they do not care about). Depending on the project and the type of data, we can either use the notification events generated by allocating/deallocating a resource, or we can poll for metrics being collected elsewhere. We will probably want to use both approaches for integrating with Quantum (e.g., use events for things like IP allocation and polling for I/O). Do you have any advice on how to integrate Ceilometer and Quantum? For example, does Quantum emit notifications and does it collect (or provide an API to query) I/O statistics? Thanks, Doug ¹ http://launchpad.net/ceilometer
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