f20e13f0b2
The previous patch introduced [placement]max_allocation_candidates config option to limit the number of candidates generated for a single query. If the number of generated allocation candidates are limited by that config option then it is possible to get candidates from a limited set of root providers (computes, anchoring providers) as placement uses a depth-first strategy, generating all candidates from the first root before considering the next one. To avoid unbalanced results this patch introduces a new config option [placement]allocation_candidates_generation_strategy with the possible values: * depth-first, the original strategy that generates all candidate from the first root before moving to the next. This is will be the default strategy for backward compatibility * breadth-first, a new possible strategy that generates candidates from available roots in a round-robin fashion, one candidate from each root before taking the second candidate from the first root. Closes-Bug: #2070257 Change-Id: Ib7a140374bc91cc9ab597d0923b0623f618ec32c
If you are viewing this README on GitHub, please be aware that placement development happens on OpenStack git and OpenStack gerrit.
OpenStack Placement
OpenStack Placement provides an HTTP service for managing, selecting, and claiming providers of classes of inventory representing available resources in a cloud.
API
To learn how to use Placement's API, consult the documentation available online at:
For more information on OpenStack APIs, SDKs and CLIs in general, refer to:
Operators
To learn how to deploy and configure OpenStack Placement, consult the documentation available online at:
In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:
Developers
For information on how to contribute to Placement, please see the contents of CONTRIBUTING.rst.
Further developer focused documentation is available at: